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Merged the USB branch and made the needed adjustments, not tested yet. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2695 35acf78f-673a-0410-8e92-d51de3d6d3f4
master
gdisirio 2011-01-30 19:18:26 +00:00
parent 5e31d55f74
commit 22781883e0
13 changed files with 2482 additions and 3 deletions
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4
os/hal/hal.mk
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@ -10,7 +10,9 @@ HALSRC = ${CHIBIOS}/os/hal/src/hal.c \
${CHIBIOS}/os/hal/src/serial.c \ ${CHIBIOS}/os/hal/src/serial.c \
${CHIBIOS}/os/hal/src/spi.c \ ${CHIBIOS}/os/hal/src/spi.c \
${CHIBIOS}/os/hal/src/uart.c \ ${CHIBIOS}/os/hal/src/uart.c \
${CHIBIOS}/os/hal/src/mmc_spi.c ${CHIBIOS}/os/hal/src/usb.c \
${CHIBIOS}/os/hal/src/mmc_spi.c \
${CHIBIOS}/os/hal/src/serial_usb.c
# Required include directories # Required include directories
HALINC = ${CHIBIOS}/os/hal/include HALINC = ${CHIBIOS}/os/hal/include

2
os/hal/include/hal.h
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@ -42,7 +42,9 @@
#include "serial.h" #include "serial.h"
#include "spi.h" #include "spi.h"
#include "uart.h" #include "uart.h"
#include "usb.h"
#include "mmc_spi.h" #include "mmc_spi.h"
#include "serial_usb.h"
/*===========================================================================*/ /*===========================================================================*/
/* External declarations. */ /* External declarations. */

178
os/hal/include/serial_usb.h Normal file
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@ -0,0 +1,178 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file serial_usb.h
* @brief Serial over USB Driver macros and structures.
*
* @addtogroup SERIAL_USB
* @{
*/
#ifndef _SERIAL_USB_H_
#define _SERIAL_USB_H_
#if HAL_USE_SERIAL_USB || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @brief Serial over USB buffers size.
* @details Configuration parameter, the buffer size must be a multiple of
* the USB data endpoint maximum packet size.
* @note The default is 64 bytes for both the transmission and receive
* buffers.
*/
#if !defined(SERIAL_USB_BUFFERS_SIZE) || defined(__DOXYGEN__)
#define SERIAL_USB_BUFFERS_SIZE 64
#endif
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
#if !HAL_USE_USB && !CH_USE_EVENTS
#error "Serial over USB Driver requires HAL_USE_USB and CH_USE_EVENTS"
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Driver state machine possible states.
*/
typedef enum {
SDU_UNINIT = 0, /**< Not initialized. */
SDU_STOP = 1, /**< Stopped. */
SDU_READY = 2 /**< Ready. */
} sdustate_t;
/**
* @brief Structure representing a serial over USB driver.
*/
typedef struct SerialUSBDriver SerialUSBDriver;
/**
* @brief Serial over USB Driver configuration structure.
* @details An instance of this structure must be passed to @p sduStart()
* in order to configure and start the driver operations.
*/
typedef struct {
/**
* @brief USB driver to use.
*/
USBDriver *usbp;
/**
* @brief USB driver configuration structure.
*/
USBConfig usb_config;
/*
* @brief Endpoint used for data transmission.
*/
usbep_t data_request_ep;
/*
* @brief Endpoint used for data reception.
*/
usbep_t data_available_ep;
/*
* @brief Endpoint used for interrupt request.
*/
usbep_t interrupt_request_ep;
} SerialUSBConfig;
/**
* @brief @p SerialDriver specific data.
*/
#define _serial_usb_driver_data \
_base_asynchronous_channel_data \
/* Driver state.*/ \
sdustate_t state; \
/* Input queue.*/ \
InputQueue iqueue; \
/* Output queue.*/ \
OutputQueue oqueue; \
/* Input circular buffer.*/ \
uint8_t ib[SERIAL_USB_BUFFERS_SIZE]; \
/* Output circular buffer.*/ \
uint8_t ob[SERIAL_USB_BUFFERS_SIZE]; \
/* End of the mandatory fields.*/ \
/* Current configuration data.*/ \
const SerialUSBConfig *config;
/**
* @brief @p SerialUSBDriver specific methods.
*/
#define _serial_usb_driver_methods \
_base_asynchronous_channel_methods
/**
* @brief @p SerialDriver virtual methods table.
*/
struct SerialUSBDriverVMT {
_serial_usb_driver_methods
};
/**
* @extends BaseAsynchronousChannel
*
* @brief Full duplex serial driver class.
* @details This class extends @p BaseAsynchronousChannel by adding physical
* I/O queues.
*/
struct SerialUSBDriver {
/** @brief Virtual Methods Table.*/
const struct SerialUSBDriverVMT *vmt;
_serial_usb_driver_data
};
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
void sduInit(void);
void sduObjectInit(SerialUSBDriver *sdp);
void sduStart(SerialUSBDriver *sdup, const SerialUSBConfig *config);
void sduStop(SerialUSBDriver *sdup);
bool_t sduRequestsHook(USBDriver *usbp);
void sduDataRequest(USBDriver *usbp, usbep_t ep);
void sduDataAvailable(USBDriver *usbp, usbep_t ep);
void sduInterruptRequest(USBDriver *usbp, usbep_t ep);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_SERIAL_USB */
#endif /* _SERIAL_USB_H_ */
/** @} */

329
os/hal/include/usb.h Normal file
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@ -0,0 +1,329 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file usb.h
* @brief USB Driver macros and structures.
*
* @addtogroup USB
* @{
*/
#ifndef _USB_H_
#define _USB_H_
#if HAL_USE_USB || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
#define USB_RTYPE_DIR_MASK 0x80
#define USB_RTYPE_DIR_HOST2DEV 0x00
#define USB_RTYPE_DIR_DEV2HOST 0x80
#define USB_RTYPE_TYPE_MASK 0x60
#define USB_RTYPE_TYPE_STD 0x00
#define USB_RTYPE_TYPE_CLASS 0x20
#define USB_RTYPE_TYPE_VENDOR 0x40
#define USB_RTYPE_TYPE_RESERVED 0x60
#define USB_RTYPE_RECIPIENT_MASK 0x1F
#define USB_RTYPE_RECIPIENT_DEVICE 0x00
#define USB_RTYPE_RECIPIENT_INTERFACE 0x01
#define USB_RTYPE_RECIPIENT_ENDPOINT 0x02
#define USB_RTYPE_RECIPIENT_OTHER 0x03
#define USB_REQ_GET_STATUS 0
#define USB_REQ_CLEAR_FEATURE 1
#define USB_REQ_SET_FEATURE 3
#define USB_REQ_SET_ADDRESS 5
#define USB_REQ_GET_DESCRIPTOR 6
#define USB_REQ_SET_DESCRIPTOR 7
#define USB_REQ_GET_CONFIGURATION 8
#define USB_REQ_SET_CONFIGURATION 9
#define USB_REQ_GET_INTERFACE 10
#define USB_REQ_SET_INTERFACE 11
#define USB_REQ_SYNCH_FRAME 12
#define USB_DESCRIPTOR_DEVICE 1
#define USB_DESCRIPTOR_CONFIGURATION 2
#define USB_DESCRIPTOR_STRING 3
#define USB_DESCRIPTOR_INTERFACE 4
#define USB_DESCRIPTOR_ENDPOINT 5
#define USB_DESCRIPTOR_DEVICE_QUALIFIER 6
#define USB_DESCRIPTOR_OTHER_SPEED_CFG 7
#define USB_DESCRIPTOR_INTERFACE_POWER 8
#define USB_FEATURE_ENDPOINT_HALT 0
#define USB_FEATURE_DEVICE_REMOTE_WAKEUP 1
#define USB_FEATURE_TEST_MODE 2
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Type of a structure representing an USB driver.
*/
typedef struct USBDriver USBDriver;
/**
* @brief Type of an endpoint identifier.
*/
typedef uint8_t usbep_t;
/**
* @brief Type of a driver state machine possible states.
*/
typedef enum {
USB_UNINIT = 0, /**< Not initialized. */
USB_STOP = 1, /**< Stopped. */
USB_READY = 2, /**< Ready, after bus reset. */
USB_SELECTED = 3, /**< Address assigned. */
USB_ACTIVE = 4, /**< Active, configuration selected.*/
} usbstate_t;
/**
* @brief Type of an endpoint type.
*/
typedef enum {
EP_TYPE_CTRL = 0, /**< Control endpoint. */
EP_TYPE_ISOC = 1, /**< Isochronous endpoint. */
EP_TYPE_BULK = 2, /**< Bulk endpoint. */
EP_TYPE_INTR = 3 /**< Interrupt endpoint. */
} usbeptype_t;
/**
* @brief Type of an endpoint status.
*/
typedef enum {
EP_STATUS_DISABLED = 0, /**< Endpoint not opened. */
EP_STATUS_STALLED = 1, /**< Endpoint opened but stalled. */
EP_STATUS_ACTIVE = 2 /**< Active endpoint. */
} usbepstatus_t;
/**
* @brief Type of an endpoint zero state machine states.
*/
typedef enum {
USB_EP0_WAITING_SETUP, /**< Waiting for SETUP data. */
USB_EP0_TX, /**< Trasmitting. */
USB_EP0_WAITING_STS, /**< Waiting status. */
USB_EP0_RX, /**< Receiving. */
USB_EP0_SENDING_STS /**< Sending status. */
} usbep0state_t;
/**
* @brief Type of an enumeration of the possible USB events.
*/
typedef enum {
USB_EVENT_RESET = 0, /**< Driver has been reset by host. */
USB_EVENT_ADDRESS = 1, /**< Address assigned. */
USB_EVENT_CONFIGURED = 2, /**< Configuration selected. */
USB_EVENT_SUSPEND = 3, /**< Entering suspend mode. */
USB_EVENT_RESUME = 4, /**< Leaving suspend mode. */
USB_EVENT_STALLED = 5, /**< Endpoint 0 error, stalled. */
} usbevent_t;
/**
* @brief Type of an USB descriptor.
*/
typedef struct {
/**
* @brief Descriptor size in unicode characters.
*/
size_t ud_size;
/**
* @brief Pointer to the descriptor.
*/
const uint8_t *ud_string;
} USBDescriptor;
/**
* @brief Type of an USB generic notification callback.
*
* @param[in] usbp pointer to the @p USBDriver object triggering the
* callback
*/
typedef void (*usbcallback_t)(USBDriver *usbp);
/**
* @brief Type of an USB endpoint callback.
*
* @param[in] usbp pointer to the @p USBDriver object triggering the
* callback
* @param[in] ep endpoint number
*/
typedef void (*usbepcallback_t)(USBDriver *usbp, usbep_t ep);
/**
* @brief Type of an USB event notification callback.
*
* @param[in] usbp pointer to the @p USBDriver object triggering the
* callback
* @param[in] event event type
*/
typedef void (*usbeventcb_t)(USBDriver *usbp, usbevent_t event);
/**
* @brief Type of a requests handler callback.
* @details The request is encoded in the @p usb_setup buffer.
*
* @param[in] usbp pointer to the @p USBDriver object triggering the
* callback
* @return The request handling exit code.
* @retval FALSE Request not recognized by the handler.
* @retval TRUE Request handled.
*/
typedef bool_t (*usbreqhandler_t)(USBDriver *usbp);
/**
* @brief Type of an USB descriptor-retrieving callback.
*/
typedef const USBDescriptor * (*usbgetdescriptor_t)(USBDriver *usbp,
uint8_t dtype,
uint8_t dindex,
uint16_t lang);
#include "usb_lld.h"
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/**
* @brief Returns the current frame number.
*
* @param[in] usbp pointer to the @p USBDriver object
* @return The current frame number.
*
* @notapi
*/
#define usbGetFrameNumber(usbp) usb_lld_get_frame_number(usbp)
/**
* @brief Returns the number of bytes readable from the receive packet
* buffer.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
* @return The number of bytes that are effectively available.
* @retval 0 Data not yet available.
*
* @iclass
*/
#define usbGetReadableI(usbp, ep) usb_lld_get_readable(usbp, ep)
/**
* @brief Endpoint read.
* @details The buffered packet is copied into the user buffer and then
* the endpoint is brought to the valid state in order to allow
* reception of more data.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
* @param[out] buf buffer where to copy the endpoint data
* @param[in] n maximum number of bytes to copy
* @return The number of bytes that were effectively available.
* @retval 0 Data not yet available.
*
* @iclass
*/
#define usbReadI(usbp, ep, buf, n) usb_lld_read(usbp, ep, buf, n)
/**
* @brief Returns the number of bytes writeable to the transmit packet
* buffer.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
* @return The number of bytes that can be written.
* @retval 0 Endpoint not ready for transmission.
*
* @iclass
*/
#define usbGetWriteableI(usbp, ep) usb_lld_get_readable(usbp, ep)
/**
* @brief Endpoint write.
* @details The user data is copied in the packer memory and then
* the endpoint is brought to the valid state in order to allow
* transmission.
*
* @param[in] usbp pointer to the @p USBDriver object triggering the
* callback
* @param[in] ep endpoint number
* @param[in] buf buffer where to copy the endpoint data
* @param[in] n maximum number of bytes to copy
* @return The number of bytes that were effectively written.
* @retval 0 Endpoint not ready for transmission.
*
* @iclass
*/
#define usbWriteI(usbp, ep, buf, n) usb_lld_write(usbp, ep, buf, n)
/**
* @brief Request transfer setup.
* @details This macro is used by the request handling callbacks in order to
* prepare a transaction over the endpoint zero.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] buf pointer to a buffer for the transaction data
* @param[in] n number of bytes to be transferred
* @param[in] endcb transfer complete callback
*
* @api
*/
#define usbSetupTransfer(usbp, buf, n, endcb) { \
(usbp)->usb_ep0next = (buf); \
(usbp)->usb_ep0n = (n); \
(usbp)->usb_ep0endcb = (endcb); \
}
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
void usbInit(void);
void usbObjectInit(USBDriver *usbp);
void usbStart(USBDriver *usbp, const USBConfig *config);
void usbStop(USBDriver *usbp);
void usbEnableEndpointI(USBDriver *usbp, usbep_t ep,
const USBEndpointConfig *epcp);
void _usb_reset(USBDriver *usbp);
void _usb_ep0in(USBDriver *usbp, usbep_t ep);
void _usb_ep0out(USBDriver *usbp, usbep_t ep);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_USB */
#endif /* _USB_H_ */
/** @} */

73
os/hal/include/usb_cdc.h Normal file
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@ -0,0 +1,73 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file usb_cdc.h
* @brief USB Communication Device Class support header.
*
* @addtogroup USB_CDC
* @{
*/
#ifndef _USB_CDC_H_
#define _USB_CDC_H_
#define CDC_SEND_ENCAPSULATED_COMMAND 0x00
#define CDC_GET_ENCAPSULATED_RESPONSE 0x01
#define CDC_SET_COMM_FEATURE 0x02
#define CDC_GET_COMM_FEATURE 0x03
#define CDC_CLEAR_COMM_FEATURE 0x04
#define CDC_SET_AUX_LINE_STATE 0x10
#define CDC_SET_HOOK_STATE 0x11
#define CDC_PULSE_SETUP 0x12
#define CDC_SEND_PULSE 0x13
#define CDC_SET_PULSE_TIME 0x14
#define CDC_RING_AUX_JACK 0x15
#define CDC_SET_LINE_CODING 0x20
#define CDC_GET_LINE_CODING 0x21
#define CDC_SET_CONTROL_LINE_STATE 0x22
#define CDC_SEND_BREAK 0x23
#define CDC_SET_RINGER_PARMS 0x30
#define CDC_GET_RINGER_PARMS 0x31
#define CDC_SET_OPERATION_PARMS 0x32
#define CDC_GET_OPERATION_PARMS 0x33
/**
* @brief Type of Line Coding structure.
*/
typedef struct {
uint8_t dwDTERate[4];
uint8_t bCharFormat;
uint8_t bParityType;
uint8_t bDataBits;
} cdc_linecoding_t;
#define LC_STOP_1 0
#define LC_STOP_1P5 1
#define LC_STOP_2 2
#define LC_PARITY_NONE 0
#define LC_PARITY_ODD 1
#define LC_PARITY_EVEN 2
#define LC_PARITY_MARK 3
#define LC_PARITY_SPACE 4
#endif /* _USB_CDC_H_ */
/** @} */

1
os/hal/platforms/STM32/platform.mk
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@ -7,6 +7,7 @@ PLATFORMSRC = ${CHIBIOS}/os/hal/platforms/STM32/hal_lld.c \
${CHIBIOS}/os/hal/platforms/STM32/serial_lld.c \ ${CHIBIOS}/os/hal/platforms/STM32/serial_lld.c \
${CHIBIOS}/os/hal/platforms/STM32/spi_lld.c \ ${CHIBIOS}/os/hal/platforms/STM32/spi_lld.c \
${CHIBIOS}/os/hal/platforms/STM32/uart_lld.c \ ${CHIBIOS}/os/hal/platforms/STM32/uart_lld.c \
${CHIBIOS}/os/hal/platforms/STM32/usb_lld.c \
${CHIBIOS}/os/hal/platforms/STM32/stm32_dma.c ${CHIBIOS}/os/hal/platforms/STM32/stm32_dma.c
# Required include directories # Required include directories

221
os/hal/platforms/STM32/stm32_usb.h Normal file
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@ -0,0 +1,221 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file stm32_usb.h
* @brief STM32 USB registers layout header.
* @note This file requires definitions from the ST STM32 header file
* stm3232f10x.h.
*
* @addtogroup STM32_USB
* @{
*/
#ifndef _STM32_USB_H_
#define _STM32_USB_H_
/**
* @brief Number of the available endpoints.
* @details This value does not include the endpoint 0 which is always present.
*/
#define USB_ENDOPOINTS_NUMBER 7
/**
* @brief USB registers block.
*/
typedef struct {
/**
* @brief Endpoint registers.
*/
volatile uint32_t EPR[USB_ENDOPOINTS_NUMBER + 1];
/*
* @brief Reserved space.
*/
volatile uint32_t _r20[8];
/*
* @brief Control Register.
*/
volatile uint32_t CNTR;
/*
* @brief Interrupt Status Register.
*/
volatile uint32_t ISTR;
/*
* @brief Frame Number Register.
*/
volatile uint32_t FNR;
/*
* @brief Device Address Register.
*/
volatile uint32_t DADDR;
/*
* @brief Buffer Table Address.
*/
volatile uint32_t BTABLE;
} stm32_usb_t;
/**
* @brief USB descriptor registers block.
*/
typedef struct {
/**
* @brief TX buffer offset register.
*/
volatile uint32_t TXADDR;
/**
* @brief TX counter register.
*/
volatile uint32_t TXCOUNT;
/**
* @brief RX buffer offset register.
*/
volatile uint32_t RXADDR;
/**
* @brief RX counter register.
*/
volatile uint32_t RXCOUNT;
} stm32_usb_descriptor_t;
/**
* @brief USB registers block numeric address.
*/
#define STM32_USB_BASE (APB1PERIPH_BASE + 0x5C00)
/**
* @brief USB RAM numeric address.
*/
#define STM32_USBRAM_BASE (APB1PERIPH_BASE + 0x6000)
/**
* @brief Pointer to the USB registers block.
*/
#define STM32_USB ((stm32_usb_t *)STM32_USB_BASE)
/**
* @brief Pointer to the USB RAM.
*/
#define STM32_USBRAM ((uint32_t *)STM32_USBRAM_BASE)
/**
* @brief Mask of all the toggling bits in the EPR register.
*/
#define EPR_TOGGLE_MASK (EPR_STAT_TX_MASK | EPR_DTOG_TX | \
EPR_STAT_RX_MASK | EPR_DTOG_RX | \
EPR_SETUP)
#define EPR_EA_MASK 0x000F
#define EPR_STAT_TX_MASK 0x0030
#define EPR_STAT_TX_DIS 0x0000
#define EPR_STAT_TX_STALL 0x0010
#define EPR_STAT_TX_NAK 0x0020
#define EPR_STAT_TX_VALID 0x0030
#define EPR_DTOG_TX 0x0040
#define EPR_CTR_TX 0x0080
#define EPR_EP_KIND 0x0100
#define EPR_EP_TYPE_MASK 0x0600
#define EPR_EP_TYPE_BULK 0x0000
#define EPR_EP_TYPE_CONTROL 0x0200
#define EPR_EP_TYPE_ISO 0x0400
#define EPR_EP_TYPE_INTERRUPT 0x0600
#define EPR_SETUP 0x0800
#define EPR_STAT_RX_MASK 0x3000
#define EPR_STAT_RX_DIS 0x0000
#define EPR_STAT_RX_STALL 0x1000
#define EPR_STAT_RX_NAK 0x2000
#define EPR_STAT_RX_VALID 0x3000
#define EPR_DTOG_RX 0x4000
#define EPR_CTR_RX 0x8000
#define CNTR_FRES 0x0001
#define CNTR_PDWN 0x0002
#define CNTR_LP_MODE 0x0004
#define CNTR_FSUSP 0x0008
#define CNTR_RESUME 0x0010
#define CNTR_ESOFM 0x0100
#define CNTR_SOFM 0x0200
#define CNTR_RESETM 0x0400
#define CNTR_SUSPM 0x0800
#define CNTR_WKUPM 0x1000
#define CNTR_ERRM 0x2000
#define CNTR_PMAOVRM 0x4000
#define CNTR_CTRM 0x8000
#define ISTR_EP_ID_MASK 0x000F
#define ISTR_DIR 0x0010
#define ISTR_ESOF 0x0100
#define ISTR_SOF 0x0200
#define ISTR_RESET 0x0400
#define ISTR_SUSP 0x0800
#define ISTR_WKUP 0x1000
#define ISTR_ERR 0x2000
#define ISTR_PMAOVR 0x4000
#define ISTR_CTR 0x8000
#define FNR_FN_MASK 0x07FF
#define FNR_LSOF 0x1800
#define FNR_LCK 0x2000
#define FNR_RXDM 0x4000
#define FNR_RXDP 0x8000
#define DADDR_ADD_MASK 0x007F
#define DADDR_EF 0x0080
#define RXCOUNT_COUNT_MASK 0x03FF
#define TXCOUNT_COUNT_MASK 0x03FF
#define EPR_SET(ep, epr) \
STM32_USB->EPR[ep] = (epr) & ~EPR_TOGGLE_MASK
#define EPR_TOGGLE(ep, epr) \
STM32_USB->EPR[ep] = (STM32_USB->EPR[ep] ^ ((epr) & EPR_TOGGLE_MASK))
#define EPR_SET_STAT_RX(ep, epr) \
STM32_USB->EPR[ep] = (STM32_USB->EPR[ep] & \
~(EPR_TOGGLE_MASK & ~EPR_STAT_RX_MASK)) ^ \
(epr)
#define EPR_SET_STAT_TX(ep, epr) \
STM32_USB->EPR[ep] = (STM32_USB->EPR[ep] & \
~(EPR_TOGGLE_MASK & ~EPR_STAT_TX_MASK)) ^ \
(epr)
#define EPR_CLEAR_CTR_RX(ep) \
STM32_USB->EPR[ep] &= ~EPR_CTR_RX & ~EPR_TOGGLE_MASK
#define EPR_CLEAR_CTR_TX(ep) \
STM32_USB->EPR[ep] &= ~EPR_CTR_TX & ~EPR_TOGGLE_MASK
/**
* @brief Returns an endpoint descriptor pointer.
*/
#define USB_GET_DESCRIPTOR(ep) \
((stm32_usb_descriptor_t *)((uint32_t)STM32_USBRAM_BASE + \
(uint32_t)STM32_USB->BTABLE * 2 + \
(uint32_t)(ep) * \
sizeof(stm32_usb_descriptor_t)))
/**
* @brief Converts from a PMA address to a physical address.
*/
#define USB_ADDR2PTR(addr) \
((uint32_t *)((addr) * 2 + STM32_USBRAM_BASE))
#endif /* _STM32_USB_H_ */
/** @} */

507
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@ -0,0 +1,507 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file STM32/usb_lld.c
* @brief STM32 USB subsystem low level driver source.
*
* @addtogroup USB
* @{
*/
#include "ch.h"
#include "hal.h"
#include "usb.h"
#if HAL_USE_USB || defined(__DOXYGEN__)
#define BTABLE_ADDR 0x0000
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/** @brief USB1 driver identifier.*/
#if STM32_USB_USE_USB1 || defined(__DOXYGEN__)
USBDriver USBD1;
#endif
/**
* @brief EP0 initialization structure.
*/
const USBEndpointConfig usb_lld_ep0config = {
_usb_ep0in,
_usb_ep0out,
0x40,
0x40,
EPR_EP_TYPE_CONTROL | EPR_STAT_TX_STALL | EPR_STAT_RX_VALID,
0x40,
0x80
};
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
#if STM32_USB_USE_USB1 || defined(__DOXYGEN__)
/**
* @brief USB high priority interrupt handler.
*
* @isr
*/
CH_IRQ_HANDLER(USB_HP_IRQHandler) {
CH_IRQ_PROLOGUE();
CH_IRQ_EPILOGUE();
}
/**
* @brief USB low priority interrupt handler.
*
* @isr
*/
CH_IRQ_HANDLER(USB_LP_IRQHandler) {
uint32_t istr;
USBDriver *usbp = &USBD1;
CH_IRQ_PROLOGUE();
istr = STM32_USB->ISTR;
/* USB bus reset condition handling.*/
if (istr & ISTR_RESET) {
_usb_reset(usbp);
if (usbp->usb_config->uc_event_cb)
usbp->usb_config->uc_event_cb(usbp, USB_EVENT_RESET);
STM32_USB->ISTR = ~ISTR_RESET;
}
/* SOF handling.*/
if (istr & ISTR_SOF) {
if (usbp->usb_config->uc_sof_cb)
usbp->usb_config->uc_sof_cb(usbp);
STM32_USB->ISTR = ~ISTR_SOF;
}
/* Endpoint events handling.*/
while (istr & ISTR_CTR) {
uint32_t ep;
uint32_t epr = STM32_USB->EPR[ep = istr & ISTR_EP_ID_MASK];
if (epr & EPR_CTR_TX) {
/* IN endpoint, transmission.*/
EPR_CLEAR_CTR_TX(ep);
if (usbp->usb_epc[ep]->uepc_in_cb)
usbp->usb_epc[ep]->uepc_in_cb(usbp, ep);
}
if (epr & EPR_CTR_RX) {
/* OUT endpoint, receive.*/
EPR_CLEAR_CTR_RX(ep);
if (usbp->usb_epc[ep]->uepc_out_cb)
usbp->usb_epc[ep]->uepc_out_cb(usbp, ep);
}
istr = STM32_USB->ISTR;
}
CH_IRQ_EPILOGUE();
}
#endif
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Low level USB driver initialization.
*
* @notapi
*/
void usb_lld_init(void) {
/* USB reset, ensures reset state in order to avoid trouble with JTAGs.*/
RCC->APB1RSTR = RCC_APB1RSTR_USBRST;
RCC->APB1RSTR = 0;
/* Driver initialization.*/
usbObjectInit(&USBD1);
}
/**
* @brief Configures and activates the USB peripheral.
*
* @param[in] usbp pointer to the @p USBDriver object
*
* @notapi
*/
void usb_lld_start(USBDriver *usbp) {
if (usbp->usb_state == USB_STOP) {
/* Clock activation.*/
#if STM32_USB_USE_USB1
if (&USBD1 == usbp) {
/* USB clock enabled.*/
RCC->APB1ENR |= RCC_APB1ENR_USBEN;
/* Powers up the transceiver while holding the USB in reset state.*/
STM32_USB->CNTR = CNTR_FRES;
/* Enabling the USB IRQ vectors, this also gives enough time to allow
the transceiver power up (1uS).*/
NVICEnableVector(USB_HP_CAN1_TX_IRQn,
CORTEX_PRIORITY_MASK(STM32_USB_USB1_HP_IRQ_PRIORITY));
NVICEnableVector(USB_LP_CAN1_RX0_IRQn,
CORTEX_PRIORITY_MASK(STM32_USB_USB1_LP_IRQ_PRIORITY));
/* Reset procedure enforced on driver start.*/
_usb_reset(&USBD1);
}
#endif
}
/* Configuration.*/
}
/**
* @brief Deactivates the USB peripheral.
*
* @param[in] usbp pointer to the @p USBDriver object
*
* @notapi
*/
void usb_lld_stop(USBDriver *usbp) {
/* If in ready state then disables the USB clock.*/
if (usbp->usb_state == USB_STOP) {
#if STM32_ADC_USE_ADC1
if (&USBD1 == usbp) {
NVICDisableVector(USB_HP_CAN1_TX_IRQn);
NVICDisableVector(USB_LP_CAN1_RX0_IRQn);
RCC->APB1ENR &= ~RCC_APB1ENR_USBEN;
}
#endif
}
}
/**
* @brief USB low level reset routine.
*
* @param[in] usbp pointer to the @p USBDriver object
*
* @notapi
*/
void usb_lld_reset(USBDriver *usbp) {
uint32_t cntr;
/* Powers up the transceiver while holding the USB in reset state.*/
STM32_USB->CNTR = CNTR_FRES;
/* Releases the USB reset, BTABLE is reset to zero.*/
STM32_USB->CNTR = 0;
STM32_USB->ISTR = 0;
STM32_USB->DADDR = DADDR_EF;
cntr = /*CNTR_ESOFM | */ CNTR_RESETM | /*CNTR_SUSPM |*/
/*CNTR_WKUPM | CNTR_ERRM | CNTR_PMAOVRM |*/ CNTR_CTRM;
/* The SOF interrupt is only enabled if a callback is defined for
this service because it is an high rate source.*/
if (usbp->usb_config->uc_sof_cb != NULL)
cntr |= CNTR_SOFM;
STM32_USB->CNTR = cntr;
}
/**
* @brief Sets the USB address.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] addr the USB address
*
* @notapi
*/
void usb_lld_set_address(USBDriver *usbp, uint8_t addr) {
STM32_USB->DADDR = (uint32_t)addr | DADDR_EF;
}
/**
* @brief Enables an endpoint.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
* @param[in] epcp the endpoint configuration
*
* @notapi
*/
void usb_lld_enable_endpoint(USBDriver *usbp, usbep_t ep,
const USBEndpointConfig *epcp) {
uint16_t nblocks;
stm32_usb_descriptor_t *dp;
/* EPxR register setup.*/
EPR_SET(ep, epcp->uepc_epr | ep);
EPR_TOGGLE(ep, epcp->uepc_epr);
/* Endpoint size and address initialization.*/
if (epcp->uepc_out_maxsize > 62)
nblocks = (((((epcp->uepc_out_maxsize - 1) | 0x1f) + 1) / 32) << 10) | 0x8000;
else
nblocks = ((((epcp->uepc_out_maxsize - 1) | 1) + 1) / 2) << 10;
dp = USB_GET_DESCRIPTOR(ep);
dp->TXCOUNT = 0;
dp->RXCOUNT = nblocks;
dp->TXADDR = epcp->uepc_inaddr;
dp->RXADDR = epcp->uepc_outaddr;
/* Logically enabling the endpoint in the USBDriver structure.*/
usbp->usb_epc[ep] = epcp;
}
/**
* @brief Disables all the active endpoints except the endpoint zero.
*
* @param[in] usbp pointer to the @p USBDriver object
*
* @notapi
*/
void usb_lld_disable_endpoints(USBDriver *usbp) {
unsigned i;
for (i = 1; i <= USB_ENDOPOINTS_NUMBER; i++) {
EPR_TOGGLE(i, 0);
EPR_SET(i, 0);
}
}
/**
* @brief Returns the number of bytes readable from the receive packet
* buffer.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
* @return The number of bytes that are effectively available.
* @retval 0 Data not yet available.
*
* @notapi
*/
size_t usb_lld_get_readable(USBDriver *usbp, usbep_t ep) {
if ((STM32_USB->EPR[ep] & EPR_STAT_RX_MASK) != EPR_STAT_RX_NAK)
return 0;
return (size_t)(USB_GET_DESCRIPTOR(ep)->RXCOUNT & RXCOUNT_COUNT_MASK);
}
/**
* @brief Endpoint read.
* @details The buffered packet is copied into the user buffer and then
* the endpoint is brought to the valid state in order to allow
* reception of more data.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
* @param[out] buf buffer where to copy the endpoint data
* @param[in] n maximum number of bytes to copy
* @return The number of bytes that were effectively available.
* @retval 0 Data not yet available.
*
* @notapi
*/
size_t usb_lld_read(USBDriver *usbp, usbep_t ep, uint8_t *buf, size_t n) {
uint32_t *pmap;
stm32_usb_descriptor_t *udp;
size_t count;
if ((STM32_USB->EPR[ep] & EPR_STAT_RX_MASK) != EPR_STAT_RX_NAK)
return 0;
udp = USB_GET_DESCRIPTOR(ep);
pmap = USB_ADDR2PTR(udp->RXADDR);
count = udp->RXCOUNT & RXCOUNT_COUNT_MASK;
if (n > count)
n = count;
count = (n + 1) / 2;
while (count) {
*(uint16_t *)buf = (uint16_t)*pmap++;
buf += 2;
count--;
}
EPR_SET_STAT_RX(ep, EPR_STAT_RX_VALID);
return n;
}
/**
* @brief Returns the number of bytes writeable to the transmit packet
* buffer.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
* @return The number of bytes that can be written.
* @retval 0 Endpoint not ready for transmission.
*
* @iclass
*/
size_t usb_lld_get_writeable(USBDriver *usbp, usbep_t ep) {
if ((STM32_USB->EPR[ep] & EPR_STAT_TX_MASK) != EPR_STAT_TX_NAK)
return 0;
return (size_t)usbp->usb_epc[ep]->uepc_in_maxsize;
}
/**
* @brief Endpoint write.
* @details The user data is copied in the packer memory and then
* the endpoint is brought to the valid state in order to allow
* transmission.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
* @param[in] buf buffer where to copy the endpoint data
* @param[in] n maximum number of bytes to copy
* @return The number of bytes that were effectively written.
* @retval 0 Endpoint not ready for transmission.
*
* @notapi
*/
size_t usb_lld_write(USBDriver *usbp, usbep_t ep,
const uint8_t *buf,
size_t n) {
uint32_t *pmap;
stm32_usb_descriptor_t *udp;
size_t count;
if ((STM32_USB->EPR[ep] & EPR_STAT_TX_MASK) != EPR_STAT_TX_NAK)
return 0;
udp = USB_GET_DESCRIPTOR(ep);
pmap = USB_ADDR2PTR(udp->TXADDR);
udp->TXCOUNT = n;
count = (n + 1) / 2;
while (count) {
*pmap++ = *(uint16_t *)buf;
buf += 2;
count--;
}
EPR_SET_STAT_TX(ep, EPR_STAT_TX_VALID);
return n;
}
/**
* @brief Returns the status of an IN endpoint.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
*
* @notapi
*/
usbepstatus_t usb_lld_get_status_in(USBDriver *usbp, usbep_t ep) {
switch (STM32_USB->EPR[ep] & EPR_STAT_TX_MASK) {
case EPR_STAT_TX_DIS:
return EP_STATUS_DISABLED;
case EPR_STAT_TX_STALL:
return EP_STATUS_STALLED;
default:
return EP_STATUS_ACTIVE;
}
}
/**
* @brief Returns the status of an OUT endpoint.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
*
* @notapi
*/
usbepstatus_t usb_lld_get_status_out(USBDriver *usbp, usbep_t ep) {
switch (STM32_USB->EPR[ep] & EPR_STAT_RX_MASK) {
case EPR_STAT_RX_DIS:
return EP_STATUS_DISABLED;
case EPR_STAT_RX_STALL:
return EP_STATUS_STALLED;
default:
return EP_STATUS_ACTIVE;
}
}
/**
* @brief Brings an IN endpoint in the stalled state.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
*
* @notapi
*/
void usb_lld_stall_in(USBDriver *usbp, usbep_t ep) {
EPR_SET_STAT_TX(ep, EPR_STAT_TX_STALL);
}
/**
* @brief Brings an OUT endpoint in the stalled state.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
*
* @notapi
*/
void usb_lld_stall_out(USBDriver *usbp, usbep_t ep) {
EPR_SET_STAT_RX(ep, EPR_STAT_RX_STALL);
}
/**
* @brief Brings an IN endpoint in the active state.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
*
* @notapi
*/
void usb_lld_clear_in(USBDriver *usbp, usbep_t ep) {
/* Makes sure to not put to NAK an endpoint that is already
transferring.*/
if ((STM32_USB->EPR[ep] & EPR_STAT_TX_MASK) != EPR_STAT_TX_VALID)
EPR_SET_STAT_TX(ep, EPR_STAT_TX_NAK);
}
/**
* @brief Brings an OUT endpoint in the active state.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
*
* @notapi
*/
void usb_lld_clear_out(USBDriver *usbp, usbep_t ep) {
/* Makes sure to not put to NAK an endpoint that is already
transferring.*/
if ((STM32_USB->EPR[ep] & EPR_STAT_RX_MASK) != EPR_STAT_RX_VALID)
EPR_SET_STAT_TX(ep, EPR_STAT_RX_NAK);
}
#endif /* HAL_USE_USB */
/** @} */

284
os/hal/platforms/STM32/usb_lld.h Normal file
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@ -0,0 +1,284 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file STM32/usb_lld.h
* @brief STM32 USB subsystem low level driver header.
*
* @addtogroup USB
* @{
*/
#ifndef _USB_LLD_H_
#define _USB_LLD_H_
#if HAL_USE_USB || defined(__DOXYGEN__)
#include "stm32_usb.h"
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/**
* @brief Maximum endpoint address.
*/
#define USB_MAX_ENDPOINTS USB_ENDOPOINTS_NUMBER
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @brief USB1 driver enable switch.
* @details If set to @p TRUE the support for USB1 is included.
* @note The default is @p TRUE.
*/
#if !defined(STM32_USB_USE_USB1) || defined(__DOXYGEN__)
#define STM32_USB_USE_USB1 TRUE
#endif
/**
* @brief USB1 interrupt priority level setting.
*/
#if !defined(STM32_USB_USB1_HP_IRQ_PRIORITY) || defined(__DOXYGEN__)
#define STM32_USB_USB1_HP_IRQ_PRIORITY 6
#endif
/**
* @brief USB1 interrupt priority level setting.
*/
#if !defined(STM32_USB_USB1_LP_IRQ_PRIORITY) || defined(__DOXYGEN__)
#define STM32_USB_USB1_LP_IRQ_PRIORITY 14
#endif
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
#if STM32_USB_USE_USB1 && !STM32_HAS_USB
#error "USB not present in the selected device"
#endif
#if !STM32_USB_USE_USB1
#error "USB driver activated but no USB peripheral assigned"
#endif
#if STM32_USBCLK != 48000000
#error "the USB driver requires a 48MHz clock"
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Type of an USB Endpoint configuration structure.
* @note Platform specific restrictions may apply to endpoints.
*/
typedef struct {
/**
* @brief IN endpoint notification callback.
*/
usbepcallback_t uepc_in_cb;
/**
* @brief OUT endpoint notification callback.
*/
usbepcallback_t uepc_out_cb;
/**
* @brief IN endpoint maximum packet size.
*/
uint16_t uepc_in_maxsize;
/**
* @brief OUT endpoint maximum packet size.
*/
uint16_t uepc_out_maxsize;
/* End of the mandatory fields.*/
/**
* @brief EPxR register initialization value.
* @note Do not specify the EA field, leave it to zero.
*/
uint16_t uepc_epr;
/**
* @brief Endpoint IN buffer address as offset in the PMA.
*/
uint16_t uepc_inaddr;
/**
* @brief Endpoint OUT buffer address as offset in the PMA.
*/
uint16_t uepc_outaddr;
} USBEndpointConfig;
/**
* @brief Type of an USB driver configuration structure.
*/
typedef struct {
/**
* @brief USB events callback.
* @details This callback is invoked when an USB driver event is registered.
*/
usbeventcb_t uc_event_cb;
/**
* @brief Device GET_DESCRIPTOR request callback.
* @note This callback is mandatory and cannot be set to @p NULL.
*/
usbgetdescriptor_t uc_get_descriptor_cb;
/**
* @brief Requests hook callback.
* @details This hook allows to be notified of standard requests or to
* handle non standard requests.
*/
usbreqhandler_t uc_requests_hook_cb;
/**
* @brief Start Of Frame callback.
*/
usbcallback_t uc_sof_cb;
/* End of the mandatory fields.*/
} USBConfig;
/**
* @brief Structure representing an USB driver.
*/
struct USBDriver {
/**
* @brief Driver state.
*/
usbstate_t usb_state;
/**
* @brief Current configuration data.
*/
const USBConfig *usb_config;
/**
* @brief Field available to user, it can be used to associate an
* application-defined handler to the USB driver.
*/
void *usb_param;
/**
* @brief Active endpoints configurations.
*/
const USBEndpointConfig *usb_epc[USB_MAX_ENDPOINTS + 1];
/**
* @brief Endpoint 0 state.
*/
usbep0state_t usb_ep0state;
/**
* @brief Next position in the buffer to be transferred through endpoint 0.
*/
uint8_t *usb_ep0next;
/**
* @brief Maximum number of bytes to be tranferred through endpoint 0.
*/
size_t usb_ep0max;
/**
* @brief Number of bytes yet to be tranferred through endpoint 0.
*/
size_t usb_ep0n;
/**
* @brief Size of the last packet transferred through endpoint 0.
*/
size_t usb_ep0lastsize;
/**
* @brief Endpoint 0 end transaction callback.
*/
usbcallback_t usb_ep0endcb;
/**
* @brief Setup packet buffer.
*/
uint8_t usb_setup[8];
/**
* @brief Current USB device status.
*/
uint16_t usb_status;
/**
* @brief Assigned USB address.
*/
uint8_t usb_address;
/**
* @brief Current USB device configuration.
*/
uint8_t usb_configuration;
/* End of the mandatory fields.*/
};
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/**
* @brief Fetches a 16 bits word value from an USB message.
*
* @param[in] p pointer to the 16 bits word
*
* @notapi
*/
#define usb_lld_fetch_word(p) (*(uint16_t *)p)
/**
* @brief Returns the current frame number.
*
* @param[in] usbp pointer to the @p USBDriver object
* @return The current frame number.
*
* @notapi
*/
#define usb_lld_get_frame_number(usbp) (STM32_USB->FNR & FNR_FN_MASK)
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#if STM32_USB_USE_USB1 && !defined(__DOXYGEN__)
extern USBDriver USBD1;
#endif
#if !defined(__DOXYGEN__)
extern const USBEndpointConfig usb_lld_ep0config;
#endif
#ifdef __cplusplus
extern "C" {
#endif
void usb_lld_init(void);
void usb_lld_start(USBDriver *usbp);
void usb_lld_stop(USBDriver *usbp);
void usb_lld_reset(USBDriver *usbp);
void usb_lld_set_address(USBDriver *usbp, uint8_t addr);
void usb_lld_enable_endpoint(USBDriver *usbp, usbep_t ep,
const USBEndpointConfig *epcp);
void usb_lld_disable_endpoints(USBDriver *usbp);
size_t usb_lld_get_readable(USBDriver *usbp, usbep_t ep);
size_t usb_lld_read(USBDriver *usbp, usbep_t ep,
uint8_t *buf, size_t n);
size_t usb_lld_write(USBDriver *usbp, usbep_t ep,
const uint8_t *buf, size_t n);
usbepstatus_t usb_lld_get_status_in(USBDriver *usbp, usbep_t ep);
usbepstatus_t usb_lld_get_status_out(USBDriver *usbp, usbep_t ep);
void usb_lld_stall_in(USBDriver *usbp, usbep_t ep);
void usb_lld_stall_out(USBDriver *usbp, usbep_t ep);
void usb_lld_clear_in(USBDriver *usbp, usbep_t ep);
void usb_lld_clear_out(USBDriver *usbp, usbep_t ep);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_USB */
#endif /* _USB_LLD_H_ */
/** @} */

10
os/hal/src/hal.c
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@ -81,11 +81,17 @@ void halInit(void) {
#if HAL_USE_SPI || defined(__DOXYGEN__) #if HAL_USE_SPI || defined(__DOXYGEN__)
spiInit(); spiInit();
#endif #endif
#if HAL_USE_UART || defined(__DOXYGEN__)
uartInit();
#endif
#if HAL_USE_USB || defined(__DOXYGEN__)
usbInit();
#endif
#if HAL_USE_MMC_SPI || defined(__DOXYGEN__) #if HAL_USE_MMC_SPI || defined(__DOXYGEN__)
mmcInit(); mmcInit();
#endif #endif
#if HAL_USE_UART || defined(__DOXYGEN__) #if HAL_USE_SERIAL_USB || defined(__DOXYGEN__)
uartInit(); sduInit();
#endif #endif
/* Board specific initialization.*/ /* Board specific initialization.*/
boardInit(); boardInit();

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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file serial_usb.c
* @brief Serial over USB Driver code.
*
* @addtogroup SERIAL_USB
* @{
*/
#include "ch.h"
#include "hal.h"
#include "usb_cdc.h"
#if HAL_USE_SERIAL_USB || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
/*
* Current Line Coding.
*/
static cdc_linecoding_t linecoding = {
{0x00, 0x96, 0x00, 0x00}, /* 38400. */
LC_STOP_1, LC_PARITY_NONE, 8
};
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*
* Interface implementation.
*/
static size_t writes(void *ip, const uint8_t *bp, size_t n) {
return chOQWriteTimeout(&((SerialDriver *)ip)->oqueue, bp,
n, TIME_INFINITE);
}
static size_t reads(void *ip, uint8_t *bp, size_t n) {
return chIQReadTimeout(&((SerialDriver *)ip)->iqueue, bp,
n, TIME_INFINITE);
}
static bool_t putwouldblock(void *ip) {
return chOQIsFullI(&((SerialDriver *)ip)->oqueue);
}
static bool_t getwouldblock(void *ip) {
return chIQIsEmptyI(&((SerialDriver *)ip)->iqueue);
}
static msg_t putt(void *ip, uint8_t b, systime_t timeout) {
return chOQPutTimeout(&((SerialDriver *)ip)->oqueue, b, timeout);
}
static msg_t gett(void *ip, systime_t timeout) {
return chIQGetTimeout(&((SerialDriver *)ip)->iqueue, timeout);
}
static size_t writet(void *ip, const uint8_t *bp, size_t n, systime_t time) {
return chOQWriteTimeout(&((SerialDriver *)ip)->oqueue, bp, n, time);
}
static size_t readt(void *ip, uint8_t *bp, size_t n, systime_t time) {
return chIQReadTimeout(&((SerialDriver *)ip)->iqueue, bp, n, time);
}
static ioflags_t getflags(void *ip) {
_ch_get_and_clear_flags_impl(ip);
}
static const struct SerialUSBDriverVMT vmt = {
writes, reads, putwouldblock, getwouldblock,
putt, gett, writet, readt,
getflags
};
/**
* @brief Notification of data removed from the input queue.
*/
static void inotify(GenericQueue *qp) {
SerialUSBDriver *sdup = (SerialUSBDriver *)qp->q_wrptr;
size_t n;
/* Writes to the input queue can only happen when the queue has been
emptied, then a whole packet is loaded in the queue.*/
if (chIQIsEmptyI(&sdup->iqueue)) {
n = usbReadI(sdup->config->usbp, sdup->config->data_available_ep,
sdup->iqueue.q_buffer, SERIAL_USB_BUFFERS_SIZE);
if (n > 0) {
sdup->iqueue.q_rdptr = sdup->iqueue.q_buffer;
chSemSetCounterI(&sdup->iqueue.q_sem, n);
}
}
}
/**
* @brief Notification of data inserted into the output queue.
*/
static void onotify(GenericQueue *qp) {
SerialUSBDriver *sdup = (SerialUSBDriver *)qp->q_rdptr;
size_t n;
/* If there is any data in the output queue then it is sent within a
single packet and the queue is emptied.*/
n = usbWriteI(sdup->config->usbp, sdup->config->data_request_ep,
sdup->oqueue.q_buffer, chOQGetFullI(&sdup->oqueue));
if (n > 0) {
sdup->oqueue.q_wrptr = sdup->oqueue.q_buffer;
chSemSetCounterI(&sdup->oqueue.q_sem, SERIAL_USB_BUFFERS_SIZE);
}
}
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Serial Driver initialization.
* @note This function is implicitly invoked by @p halInit(), there is
* no need to explicitly initialize the driver.
*
* @init
*/
void sduInit(void) {
}
/**
* @brief Initializes a generic full duplex driver object.
* @details The HW dependent part of the initialization has to be performed
* outside, usually in the hardware initialization code.
*
* @param[out] sdup pointer to a @p SerialUSBDriver structure
* @param[in] inotify pointer to a callback function that is invoked when
* some data is read from the Queue. The value can be
* @p NULL.
* @param[in] onotify pointer to a callback function that is invoked when
* some data is written in the Queue. The value can be
* @p NULL.
*
* @init
*/
void sduObjectInit(SerialUSBDriver *sdup) {
sdup->vmt = &vmt;
chEvtInit(&sdup->event);
sdup->flags = IO_NO_ERROR;
sdup->state = SDU_STOP;
chIQInit(&sdup->iqueue, sdup->ib, SERIAL_USB_BUFFERS_SIZE, inotify);
chOQInit(&sdup->oqueue, sdup->ob, SERIAL_USB_BUFFERS_SIZE, onotify);
/* This is a dirty trick but those pointers are never used because queues
are accessed in block mode from the low level.*/
sdup->iqueue.q_wrptr = (uint8_t *)sdup;
sdup->oqueue.q_rdptr = (uint8_t *)sdup;
}
/**
* @brief Configures and starts the driver.
*
* @param[in] sdup pointer to a @p SerialUSBDriver object
* @param[in] config the serial over USB driver configuration
*
* @api
*/
void sduStart(SerialUSBDriver *sdup, const SerialUSBConfig *config) {
chDbgCheck(sdup != NULL, "sduStart");
chSysLock();
chDbgAssert((sdup->state == SDU_STOP) || (sdup->state == SDU_READY),
"sduStart(), #1",
"invalid state");
sdup->config = config;
usbStart(config->usbp, &config->usb_config);
config->usbp->usb_param = sdup;
sdup->state = SDU_READY;
chSysUnlock();
}
/**
* @brief Stops the driver.
* @details Any thread waiting on the driver's queues will be awakened with
* the message @p Q_RESET.
*
* @param[in] sdup pointer to a @p SerialUSBDriver object
*
* @api
*/
void sduStop(SerialUSBDriver *sdup) {
chDbgCheck(sdup != NULL, "sdStop");
chSysLock();
chDbgAssert((sdup->state == SDU_STOP) || (sdup->state == SDU_READY),
"sduStop(), #1",
"invalid state");
usbStop(sdup->config->usbp);
sdup->state = SDU_STOP;
chSysUnlock();
}
/**
* @brief Default requests hook.
* @details Applications wanting to use the Serial over USB driver can use
* this function as requests hook in the USB configuration.
* The following requests are emulated:
* - CDC_GET_LINE_CODING.
* - CDC_SET_LINE_CODING.
* - CDC_SET_CONTROL_LINE_STATE.
* .
*/
bool_t sduRequestsHook(USBDriver *usbp) {
if ((usbp->usb_setup[0] & USB_RTYPE_TYPE_MASK) == USB_RTYPE_TYPE_CLASS) {
switch (usbp->usb_setup[1]) {
case CDC_GET_LINE_CODING:
usbSetupTransfer(usbp, (uint8_t *)&linecoding, sizeof(linecoding), NULL);
return TRUE;
case CDC_SET_LINE_CODING:
usbSetupTransfer(usbp, (uint8_t *)&linecoding, sizeof(linecoding), NULL);
return TRUE;
case CDC_SET_CONTROL_LINE_STATE:
/* Nothing to do, there are no control lines.*/
usbSetupTransfer(usbp, NULL, 0, NULL);
return TRUE;
default:
return FALSE;
}
}
return FALSE;
}
/**
* @brief Default data request callback.
* @details The application must use this function as callback for the IN
* data endpoint.
*/
void sduDataRequest(USBDriver *usbp, usbep_t ep) {
SerialUSBDriver *sdup = usbp->usb_param;
size_t n;
chSysLockFromIsr();
/* If there is any data in the output queue then it is sent within a
single packet and the queue is emptied.*/
n = chOQGetFullI(&sdup->oqueue);
if (n > 0) {
n = usbWriteI(usbp, ep, sdup->oqueue.q_buffer, n);
if (n > 0) {
sdup->oqueue.q_wrptr = sdup->oqueue.q_buffer;
chSemSetCounterI(&sdup->oqueue.q_sem, SERIAL_USB_BUFFERS_SIZE);
chIOAddFlagsI(sdup, IO_OUTPUT_EMPTY);
}
}
chSysUnlockFromIsr();
}
/**
* @brief Default data available callback.
* @details The application must use this function as callback for the OUT
* data endpoint.
*/
void sduDataAvailable(USBDriver *usbp, usbep_t ep) {
SerialUSBDriver *sdup = usbp->usb_param;
chSysLockFromIsr();
/* Writes to the input queue can only happen when the queue has been
emptied, then a whole packet is loaded in the queue.*/
if (chIQIsEmptyI(&sdup->iqueue)) {
size_t n;
n = usbReadI(usbp, ep, sdup->iqueue.q_buffer, SERIAL_USB_BUFFERS_SIZE);
if (n > 0) {
sdup->iqueue.q_rdptr = sdup->iqueue.q_buffer;
chSemSetCounterI(&sdup->iqueue.q_sem, n);
chIOAddFlagsI(sdup, IO_INPUT_AVAILABLE);
}
}
chSysUnlockFromIsr();
}
/**
* @brief Default data received callback.
* @details The application must use this function as callback for the IN
* interrupt endpoint.
*/
void sduInterruptRequest(USBDriver *usbp, usbep_t ep) {
(void)usbp;
(void)ep;
}
#endif /* HAL_USE_SERIAL */
/** @} */

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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file usb.c
* @brief USB Driver code.
*
* @addtogroup USB
* @{
*/
#include "ch.h"
#include "hal.h"
#include "usb.h"
#if HAL_USE_USB || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
static const uint8_t zero_status[] = {0x00, 0x00};
static const uint8_t active_status[] ={0x00, 0x00};
static const uint8_t halted_status[] = {0x01, 0x00};
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/**
* @brief SET ADDRESS transaction callback.
*
* @param[in] usbp pointer to the @p USBDriver object
*/
void set_address(USBDriver *usbp) {
usbp->usb_address = usbp->usb_setup[2];
usb_lld_set_address(usbp, usbp->usb_address);
if (usbp->usb_config->uc_event_cb)
usbp->usb_config->uc_event_cb(usbp, USB_EVENT_ADDRESS);
usbp->usb_state = USB_SELECTED;
}
/**
* @brief Starts a receive phase on the endpoint zero.
*
* @param[in] usbp pointer to the @p USBDriver object
*/
static void start_rx_ep0(USBDriver *usbp) {
if (usbp->usb_ep0n > 0) {
/* The received data cannot exceed the available amount.*/
if (usbp->usb_ep0n > usbp->usb_ep0max)
usbp->usb_ep0n = usbp->usb_ep0max;
/* Determines the maximum amount that can be received using a
single packet.*/
if (usbp->usb_ep0n > usb_lld_ep0config.uepc_out_maxsize)
usbp->usb_ep0lastsize = usb_lld_ep0config.uepc_out_maxsize;
else
usbp->usb_ep0lastsize = usbp->usb_ep0n;
usbp->usb_ep0state = USB_EP0_RX;
}
else {
/* Sending zero sized status packet.*/
usb_lld_write(usbp, 0, NULL, 0);
usbp->usb_ep0state = USB_EP0_SENDING_STS;
}
}
/**
* @brief Starts a transmission phase on the endpoint zero.
*
* @param[in] usbp pointer to the @p USBDriver object
*/
static void start_tx_ep0(USBDriver *usbp) {
if (usbp->usb_ep0n > 0) {
/* The transmitted data cannot exceed the requested amount.*/
if (usbp->usb_ep0n > usbp->usb_ep0max)
usbp->usb_ep0n = usbp->usb_ep0max;
/* Determines the maximum amount that can be transmitted using a
single packet.*/
if (usbp->usb_ep0n > usb_lld_ep0config.uepc_in_maxsize)
usbp->usb_ep0lastsize = usb_lld_ep0config.uepc_in_maxsize;
else
usbp->usb_ep0lastsize = usbp->usb_ep0n;
/* Starts transmission.*/
usb_lld_write(usbp, 0, usbp->usb_ep0next, usbp->usb_ep0lastsize);
usbp->usb_ep0state = USB_EP0_TX;
}
else
usbp->usb_ep0state = USB_EP0_WAITING_STS;
}
/**
* @brief Standard requests handler.
* @details This is the standard requests default handler, most standard
* requests are handled here, the user can override the standard
* handling using the @p uc_requests_hook_cb hook in the
* @p USBConfig structure.
*
* @param[in] usbp pointer to the @p USBDriver object
* @return The request handling exit code.
* @retval FALSE Request not recognized by the handler or error.
* @retval TRUE Request handled.
*/
static bool_t default_handler(USBDriver *usbp) {
const USBDescriptor *dp;
/* Decoding the request.*/
switch (((usbp->usb_setup[0] & (USB_RTYPE_RECIPIENT_MASK |
USB_RTYPE_TYPE_MASK)) |
(usbp->usb_setup[1] << 8))) {
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_GET_STATUS << 8):
/* Just returns the current status word.*/
usbSetupTransfer(usbp, (uint8_t *)&usbp->usb_status, 2, NULL);
return TRUE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_CLEAR_FEATURE << 8):
/* Only the DEVICE_REMOTE_WAKEUP is handled here, any other feature
number is handled as an error.*/
if (usbp->usb_setup[2] == USB_FEATURE_DEVICE_REMOTE_WAKEUP) {
usbp->usb_status &= ~2;
usbSetupTransfer(usbp, NULL, 0, NULL);
return TRUE;
}
return FALSE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_FEATURE << 8):
/* Only the DEVICE_REMOTE_WAKEUP is handled here, any other feature
number is handled as an error.*/
if (usbp->usb_setup[2] == USB_FEATURE_DEVICE_REMOTE_WAKEUP) {
usbp->usb_status |= 2;
usbSetupTransfer(usbp, NULL, 0, NULL);
return TRUE;
}
return FALSE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_ADDRESS << 8):
/* The handling is posponed to after the status phase in order to allow
the proper completion of the transaction.*/
usbSetupTransfer(usbp, NULL, 0, set_address);
return TRUE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_GET_DESCRIPTOR << 8):
/* Handling descriptor requests from the host.*/
dp = usbp->usb_config->uc_get_descriptor_cb(
usbp, usbp->usb_setup[3], usbp->usb_setup[2],
usb_lld_fetch_word(&usbp->usb_setup[4]));
if (dp == NULL)
return FALSE;
usbSetupTransfer(usbp, (uint8_t *)dp->ud_string, dp->ud_size, NULL);
return TRUE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_GET_CONFIGURATION << 8):
/* Returning the last selected configuration.*/
usbSetupTransfer(usbp, &usbp->usb_configuration, 1, NULL);
return TRUE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_CONFIGURATION << 8):
/* Handling configuration selection from the host.*/
usbp->usb_configuration = usbp->usb_setup[2];
if (usbp->usb_configuration == 0)
usbp->usb_state = USB_SELECTED;
else
usbp->usb_state = USB_ACTIVE;
if (usbp->usb_config->uc_event_cb)
usbp->usb_config->uc_event_cb(usbp, USB_EVENT_CONFIGURED);
usbSetupTransfer(usbp, NULL, 0, NULL);
return TRUE;
case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_GET_STATUS << 8):
case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_SYNCH_FRAME << 8):
/* Just sending two zero bytes, the application can change the behavior
using a hook..*/
usbSetupTransfer(usbp, (uint8_t *)zero_status, 2, NULL);
return TRUE;
case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_GET_STATUS << 8):
/* Sending the EP status.*/
if (usbp->usb_setup[4] & 0x80) {
switch (usb_lld_get_status_in(usbp, usbp->usb_setup[4] & 0x0F)) {
case EP_STATUS_STALLED:
usbSetupTransfer(usbp, (uint8_t *)halted_status, 2, NULL);
return TRUE;
case EP_STATUS_ACTIVE:
usbSetupTransfer(usbp, (uint8_t *)active_status, 2, NULL);
return TRUE;
default:
return FALSE;
}
}
else {
switch (usb_lld_get_status_out(usbp, usbp->usb_setup[4] & 0x0F)) {
case EP_STATUS_STALLED:
usbSetupTransfer(usbp, (uint8_t *)halted_status, 2, NULL);
return TRUE;
case EP_STATUS_ACTIVE:
usbSetupTransfer(usbp, (uint8_t *)active_status, 2, NULL);
return TRUE;
default:
return FALSE;
}
}
case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_CLEAR_FEATURE << 8):
/* Only ENDPOINT_HALT is handled as feature.*/
if (usbp->usb_setup[2] != USB_FEATURE_ENDPOINT_HALT)
return FALSE;
/* Clearing the EP status, not valid for EP0, it is ignored in that case.*/
if ((usbp->usb_setup[4] & 0x0F) > 0) {
if (usbp->usb_setup[4] & 0x80)
usb_lld_clear_in(usbp, usbp->usb_setup[4] & 0x0F);
else
usb_lld_clear_out(usbp, usbp->usb_setup[4] & 0x0F);
}
usbSetupTransfer(usbp, NULL, 0, NULL);
return TRUE;
case USB_RTYPE_RECIPIENT_ENDPOINT | (USB_REQ_SET_FEATURE << 8):
/* Only ENDPOINT_HALT is handled as feature.*/
if (usbp->usb_setup[2] != USB_FEATURE_ENDPOINT_HALT)
return FALSE;
/* Stalling the EP, not valid for EP0, it is ignored in that case.*/
if ((usbp->usb_setup[4] & 0x0F) > 0) {
if (usbp->usb_setup[4] & 0x80)
usb_lld_stall_in(usbp, usbp->usb_setup[4] & 0x0F);
else
usb_lld_stall_out(usbp, usbp->usb_setup[4] & 0x0F);
}
usbSetupTransfer(usbp, NULL, 0, NULL);
return TRUE;
case USB_RTYPE_RECIPIENT_DEVICE | (USB_REQ_SET_DESCRIPTOR << 8):
case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_CLEAR_FEATURE << 8):
case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_SET_FEATURE << 8):
case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_GET_INTERFACE << 8):
case USB_RTYPE_RECIPIENT_INTERFACE | (USB_REQ_SET_INTERFACE << 8):
/* All the above requests are not handled here, if you need them then
use the hook mechanism and provide handling.*/
default:
return FALSE;
}
}
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief USB Driver initialization.
* @note This function is implicitly invoked by @p halInit(), there is
* no need to explicitly initialize the driver.
*
* @init
*/
void usbInit(void) {
usb_lld_init();
}
/**
* @brief Initializes the standard part of a @p USBDriver structure.
*
* @param[out] usbp pointer to the @p USBDriver object
*
* @init
*/
void usbObjectInit(USBDriver *usbp) {
usbp->usb_state = USB_STOP;
usbp->usb_config = NULL;
usbp->usb_param = NULL;
}
/**
* @brief Configures and activates the USB peripheral.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] config pointer to the @p USBConfig object
*
* @api
*/
void usbStart(USBDriver *usbp, const USBConfig *config) {
chDbgCheck((usbp != NULL) && (config != NULL), "usbStart");
chSysLock();
chDbgAssert((usbp->usb_state == USB_STOP) || (usbp->usb_state == USB_READY),
"usbStart(), #1",
"invalid state");
usbp->usb_config = config;
usb_lld_start(usbp);
usbp->usb_state = USB_READY;
chSysUnlock();
}
/**
* @brief Deactivates the USB peripheral.
*
* @param[in] usbp pointer to the @p USBDriver object
*
* @api
*/
void usbStop(USBDriver *usbp) {
chDbgCheck(usbp != NULL, "usbStop");
chSysLock();
chDbgAssert((usbp->usb_state == USB_STOP) || (usbp->usb_state == USB_READY),
"usbStop(), #1",
"invalid state");
usb_lld_stop(usbp);
usbp->usb_state = USB_STOP;
chSysUnlock();
}
/**
* @brief Enables an endpoint.
* @details This function enables an endpoint, both IN and/or OUT directions
* depending on the configuration structure.
* @note This function must be invoked in response of a SET_CONFIGURATION
* or SET_INTERFACE message.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number
* @param[in] epcp the endpoint configuration
*
* @iclass
*/
void usbEnableEndpointI(USBDriver *usbp, usbep_t ep,
const USBEndpointConfig *epcp) {
chDbgAssert(usbp->usb_state == USB_ACTIVE,
"usbEnableEndpointI(), #1", "invalid state");
chDbgAssert(usbp->usb_epc[ep] != NULL,
"usbEnableEndpointI(), #2", "already enabled");
/* Logically enabling the endpoint in the USBDriver structure.*/
usbp->usb_epc[ep] = epcp;
/* Low level endpoint activation.*/
usb_lld_enable_endpoint(usbp, ep, epcp);
}
/**
* @brief Disables all the active endpoints.
* @details This function disables all the active endpoints except the
* endpoint zero.
* @note This function must be invoked in response of a SET_CONFIGURATION
* message with configuration number zero.
*
* @param[in] usbp pointer to the @p USBDriver object
*
* @iclass
*/
void usbDisableEndpointsI(USBDriver *usbp) {
unsigned i;
chDbgAssert(usbp->usb_state == USB_SELECTED,
"usbDisableEndpointsI(), #1", "invalid state");
for (i = 1; i <= USB_MAX_ENDPOINTS; i++)
usbp->usb_epc[i] = NULL;
/* Low level endpoints deactivation.*/
usb_lld_disable_endpoints(usbp);
}
/**
* @brief USB reset routine.
*
* @param[in] usbp pointer to the @p USBDriver object
*
* @notapi
*/
void _usb_reset(USBDriver *usbp) {
unsigned i;
usbp->usb_state = USB_READY;
usbp->usb_status = 0;
usbp->usb_address = 0;
usbp->usb_configuration = 0;
/* Invalidates all endpoints into the USBDriver structure.*/
for (i = 0; i <= USB_MAX_ENDPOINTS; i++)
usbp->usb_epc[i] = NULL;
/* EP0 state machine initialization.*/
usbp->usb_ep0state = USB_EP0_WAITING_SETUP;
/* Low level reset.*/
usb_lld_reset(usbp);
/* Low level endpoint zero activation.*/
usbp->usb_epc[0] = &usb_lld_ep0config;
usb_lld_enable_endpoint(usbp, 0, &usb_lld_ep0config);
}
/**
* @brief Default EP0 IN callback.
* @details This function is used by the low level driver as default handler
* for EP0 IN events.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number, always zero
*
* @notapi
*/
void _usb_ep0in(USBDriver *usbp, usbep_t ep) {
(void)ep;
switch (usbp->usb_ep0state) {
case USB_EP0_TX:
usbp->usb_ep0next += usbp->usb_ep0lastsize;
usbp->usb_ep0max -= usbp->usb_ep0lastsize;
usbp->usb_ep0n -= usbp->usb_ep0lastsize;
/* The final condition is when the requested size has been transmitted or
when a packet has been sent with size less than the maximum packet
size.*/
if ((usbp->usb_ep0max == 0) ||
(usbp->usb_ep0lastsize < usb_lld_ep0config.uepc_in_maxsize))
usbp->usb_ep0state = USB_EP0_WAITING_STS;
else {
usbp->usb_ep0lastsize = usbp->usb_ep0n > usb_lld_ep0config.uepc_in_maxsize ?
usb_lld_ep0config.uepc_in_maxsize : usbp->usb_ep0n;
usb_lld_write(usbp, 0, usbp->usb_ep0next, usbp->usb_ep0lastsize);
}
return;
case USB_EP0_SENDING_STS:
if (usbp->usb_ep0endcb)
usbp->usb_ep0endcb(usbp);
usbp->usb_ep0state = USB_EP0_WAITING_SETUP;
return;
default:
;
}
/* Error response.*/
usb_lld_stall_in(usbp, 0);
usb_lld_stall_out(usbp, 0);
if (usbp->usb_config->uc_event_cb)
usbp->usb_config->uc_event_cb(usbp, USB_EVENT_STALLED);
usbp->usb_ep0state = USB_EP0_WAITING_SETUP;
}
/**
* @brief Default EP0 OUT callback.
* @details This function is used by the low level driver as default handler
* for EP0 OUT events.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep endpoint number, always zero
*
* @notapi
*/
void _usb_ep0out(USBDriver *usbp, usbep_t ep) {
size_t n, size;
uint8_t buf[1];
(void)ep;
switch (usbp->usb_ep0state) {
case USB_EP0_WAITING_SETUP:
/* SETUP packet handling.*/
n = usb_lld_read(usbp, 0, usbp->usb_setup, 8);
if (n != 8)
break;
/* First verify if the application has an handler installed for this
request.*/
if (!(usbp->usb_config->uc_requests_hook_cb) ||
!(usbp->usb_config->uc_requests_hook_cb(usbp))) {
/* Invoking the default handler, if this fails then stalls the
endpoint zero as error.*/
if (((usbp->usb_setup[0] & USB_RTYPE_TYPE_MASK) != USB_RTYPE_TYPE_STD) ||
!default_handler(usbp))
break;
}
/* Transfer preparation. The request handler must have populated
correctly the fields usb_ep0next, usb_ep0n and usb_ep0endcb using
the macro usbSetupTransfer().*/
usbp->usb_ep0max = usb_lld_fetch_word(&usbp->usb_setup[6]);
if ((usbp->usb_setup[0] & USB_RTYPE_DIR_MASK) == USB_RTYPE_DIR_DEV2HOST)
start_tx_ep0(usbp);
else
start_rx_ep0(usbp);
return;
case USB_EP0_RX:
/* Check for buffer overflow.*/
n = size = usb_lld_get_readable(usbp, 0);
if (n > usbp->usb_ep0n)
n = usbp->usb_ep0n;
/* Fetching received data packet.*/
n = usb_lld_read(usbp, 0, usbp->usb_ep0next, n);
if (n > usbp->usb_ep0max)
break;
usbp->usb_ep0max -= size;
usbp->usb_ep0n -= n;
usbp->usb_ep0next += n;
if (usbp->usb_ep0max == 0) {
usb_lld_write(usbp, 0, NULL, 0);
usbp->usb_ep0state = USB_EP0_SENDING_STS;
}
return;
case USB_EP0_WAITING_STS:
/* STATUS received packet handling, it must be zero sized.*/
n = usb_lld_read(usbp, 0, buf, 1);
if (n != 0)
break;
if (usbp->usb_ep0endcb)
usbp->usb_ep0endcb(usbp);
usbp->usb_ep0state = USB_EP0_WAITING_SETUP;
return;
default:
;
}
/* Error response.*/
usb_lld_stall_in(usbp, 0);
usb_lld_stall_out(usbp, 0);
if (usbp->usb_config->uc_event_cb)
usbp->usb_config->uc_event_cb(usbp, USB_EVENT_STALLED);
usbp->usb_ep0state = USB_EP0_WAITING_SETUP;
}
#endif /* HAL_USE_USB */
/** @} */

7
readme.txt
View File

@ -69,6 +69,13 @@
***************************************************************************** *****************************************************************************
*** 2.3.0 *** *** 2.3.0 ***
- NEW: Added experimental USB driver, it will certainly change in next
releases.
- NEW: Added experimental "serial over USB" driver, it implements a
Communication Device Class exposing it as a normal serial driver to
applications, it will certainly change in next
releases.
- NEW: Added USB CDC loopback test application.
- NEW: Implemented new event IO_TRANSMISSION_END in the generic serial - NEW: Implemented new event IO_TRANSMISSION_END in the generic serial
driver. This event marks the physical transmission end of a data stream. driver. This event marks the physical transmission end of a data stream.
- NEW: Implemented the new IO_TRANSMISSION_END event in the STM32 serial - NEW: Implemented the new IO_TRANSMISSION_END event in the STM32 serial