396 lines
14 KiB
C
396 lines
14 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ch.h"
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#include "hal.h"
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#include "test.h"
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/*===========================================================================*/
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/* USB related stuff. */
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/*===========================================================================*/
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#define DATA_REQUEST_EP 1
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#define INTERRUPT_REQUEST_EP 2
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#define DATA_AVAILABLE_EP 3
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/*
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* USB Driver structure.
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*/
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static SerialUSBDriver SDU1;
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/*
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* USB Device Descriptor.
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*/
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static const uint8_t vcom_device_descriptor_data[18] = {
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USB_DESC_DEVICE (0x0110, /* bcdUSB (1.1). */
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0x02, /* bDeviceClass (CDC). */
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0x00, /* bDeviceSubClass. */
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0x00, /* bDeviceProtocol. */
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0x40, /* bMaxPacketSize. */
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0x0483, /* idVendor (ST). */
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0x5740, /* idProduct. */
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0x0200, /* bcdDevice. */
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1, /* iManufacturer. */
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2, /* iProduct. */
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3, /* iSerialNumber. */
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1) /* bNumConfigurations. */
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};
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/*
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* Device Descriptor wrapper.
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*/
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static const USBDescriptor vcom_device_descriptor = {
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sizeof vcom_device_descriptor_data,
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vcom_device_descriptor_data
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};
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/* Configuration Descriptor tree for a CDC.*/
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static const uint8_t vcom_configuration_descriptor_data[67] = {
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/* Configuration Descriptor.*/
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USB_DESC_CONFIGURATION(67, /* wTotalLength. */
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0x02, /* bNumInterfaces. */
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0x01, /* bConfigurationValue. */
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0, /* iConfiguration. */
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0xC0, /* bmAttributes (self powered). */
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50), /* bMaxPower (100mA). */
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/* Interface Descriptor.*/
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USB_DESC_INTERFACE (0x00, /* bInterfaceNumber. */
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0x00, /* bAlternateSetting. */
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0x01, /* bNumEndpoints. */
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0x02, /* bInterfaceClass (Communications
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Interface Class, CDC section
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4.2). */
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0x02, /* bInterfaceSubClass (Abstract
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Control Model, CDC section 4.3). */
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0x01, /* bInterfaceProtocol (AT commands,
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CDC section 4.4). */
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0), /* iInterface. */
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/* Header Functional Descriptor (CDC section 5.2.3).*/
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USB_DESC_BYTE (5), /* bLength. */
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USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */
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USB_DESC_BYTE (0x00), /* bDescriptorSubtype (Header
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Functional Descriptor. */
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USB_DESC_BCD (0x0110), /* bcdCDC. */
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/* Call Management Functional Descriptor. */
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USB_DESC_BYTE (5), /* bFunctionLength. */
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USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */
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USB_DESC_BYTE (0x01), /* bDescriptorSubtype (Call Management
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Functional Descriptor). */
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USB_DESC_BYTE (0x00), /* bmCapabilities (D0+D1). */
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USB_DESC_BYTE (0x01), /* bDataInterface. */
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/* ACM Functional Descriptor.*/
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USB_DESC_BYTE (4), /* bFunctionLength. */
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USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */
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USB_DESC_BYTE (0x02), /* bDescriptorSubtype (Abstract
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Control Management Descriptor). */
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USB_DESC_BYTE (0x02), /* bmCapabilities. */
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/* Union Functional Descriptor.*/
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USB_DESC_BYTE (5), /* bFunctionLength. */
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USB_DESC_BYTE (0x24), /* bDescriptorType (CS_INTERFACE). */
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USB_DESC_BYTE (0x06), /* bDescriptorSubtype (Union
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Functional Descriptor). */
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USB_DESC_BYTE (0x00), /* bMasterInterface (Communication
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Class Interface). */
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USB_DESC_BYTE (0x01), /* bSlaveInterface0 (Data Class
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Interface). */
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/* Endpoint 2 Descriptor.*/
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USB_DESC_ENDPOINT (INTERRUPT_REQUEST_EP|0x80, /* bEndpointAddress. */
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0x03, /* bmAttributes (Interrupt). */
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0x0008, /* wMaxPacketSize. */
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0xFF), /* bInterval. */
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/* Interface Descriptor.*/
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USB_DESC_INTERFACE (0x01, /* bInterfaceNumber. */
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0x00, /* bAlternateSetting. */
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0x02, /* bNumEndpoints. */
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0x0A, /* bInterfaceClass (Data Class
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Interface, CDC section 4.5). */
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0x00, /* bInterfaceSubClass (CDC section
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4.6). */
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0x00, /* bInterfaceProtocol (CDC section
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4.7). */
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0x00), /* iInterface. */
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/* Endpoint 3 Descriptor.*/
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USB_DESC_ENDPOINT (DATA_AVAILABLE_EP, /* bEndpointAddress. */
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0x02, /* bmAttributes (Bulk). */
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0x0040, /* wMaxPacketSize. */
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0x00), /* bInterval. */
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/* Endpoint 1 Descriptor.*/
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USB_DESC_ENDPOINT (DATA_REQUEST_EP|0x80, /* bEndpointAddress. */
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0x02, /* bmAttributes (Bulk). */
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0x0040, /* wMaxPacketSize. */
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0x00) /* bInterval. */
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};
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/*
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* Configuration Descriptor wrapper.
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*/
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static const USBDescriptor vcom_configuration_descriptor = {
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sizeof vcom_configuration_descriptor_data,
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vcom_configuration_descriptor_data
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};
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/*
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* U.S. English language identifier.
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*/
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static const uint8_t vcom_string0[] = {
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USB_DESC_BYTE(4), /* bLength. */
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USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
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USB_DESC_WORD(0x0409) /* wLANGID (U.S. English). */
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};
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/*
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* Vendor string.
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*/
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static const uint8_t vcom_string1[] = {
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USB_DESC_BYTE(38), /* bLength. */
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USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
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'S', 0, 'T', 0, 'M', 0, 'i', 0, 'c', 0, 'r', 0, 'o', 0, 'e', 0,
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'l', 0, 'e', 0, 'c', 0, 't', 0, 'r', 0, 'o', 0, 'n', 0, 'i', 0,
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'c', 0, 's', 0
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};
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/*
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* Device Description string.
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*/
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static const uint8_t vcom_string2[] = {
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USB_DESC_BYTE(56), /* bLength. */
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USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
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'C', 0, 'h', 0, 'i', 0, 'b', 0, 'i', 0, 'O', 0, 'S', 0, '/', 0,
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'R', 0, 'T', 0, ' ', 0, 'V', 0, 'i', 0, 'r', 0, 't', 0, 'u', 0,
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'a', 0, 'l', 0, ' ', 0, 'C', 0, 'O', 0, 'M', 0, ' ', 0, 'P', 0,
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'o', 0, 'r', 0, 't', 0
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};
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/*
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* Serial Number string.
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*/
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static const uint8_t vcom_string3[] = {
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USB_DESC_BYTE(8), /* bLength. */
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USB_DESC_BYTE(USB_DESCRIPTOR_STRING), /* bDescriptorType. */
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'0' + CH_KERNEL_MAJOR, 0,
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'0' + CH_KERNEL_MINOR, 0,
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'0' + CH_KERNEL_PATCH, 0
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};
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/*
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* Strings wrappers array.
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*/
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static const USBDescriptor vcom_strings[] = {
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{sizeof vcom_string0, vcom_string0},
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{sizeof vcom_string1, vcom_string1},
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{sizeof vcom_string2, vcom_string2},
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{sizeof vcom_string3, vcom_string3}
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};
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/*
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* Handles the GET_DESCRIPTOR callback. All required descriptors must be
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* handled here.
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*/
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static const USBDescriptor *get_descriptor(USBDriver *usbp,
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uint8_t dtype,
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uint8_t dindex,
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uint16_t lang) {
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(void)usbp;
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(void)lang;
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switch (dtype) {
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case USB_DESCRIPTOR_DEVICE:
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return &vcom_device_descriptor;
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case USB_DESCRIPTOR_CONFIGURATION:
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return &vcom_configuration_descriptor;
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case USB_DESCRIPTOR_STRING:
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if (dindex < 4)
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return &vcom_strings[dindex];
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}
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return NULL;
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}
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/**
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* @brief EP1 initialization structure (IN only).
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*/
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static const USBEndpointConfig ep1config = {
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USB_EP_MODE_TYPE_BULK | USB_EP_MODE_PACKET,
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sduDataTransmitted,
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NULL,
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0x0040,
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0x0000,
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NULL,
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NULL
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};
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/**
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* @brief EP2 initialization structure (IN only).
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*/
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static const USBEndpointConfig ep2config = {
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USB_EP_MODE_TYPE_INTR | USB_EP_MODE_PACKET,
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sduInterruptTransmitted,
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NULL,
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0x0010,
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0x0000,
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NULL,
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NULL
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};
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/**
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* @brief EP3 initialization structure (OUT only).
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*/
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static const USBEndpointConfig ep3config = {
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USB_EP_MODE_TYPE_BULK | USB_EP_MODE_PACKET,
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NULL,
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sduDataReceived,
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0x0000,
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0x0040,
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NULL,
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NULL
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};
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/*
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* Handles the USB driver global events.
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*/
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static void usb_event(USBDriver *usbp, usbevent_t event) {
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switch (event) {
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case USB_EVENT_RESET:
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return;
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case USB_EVENT_ADDRESS:
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return;
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case USB_EVENT_CONFIGURED:
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/* Enables the endpoints specified into the configuration.
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Note, this callback is invoked from an ISR so I-Class functions
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must be used.*/
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chSysLockFromIsr();
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usbInitEndpointI(usbp, DATA_REQUEST_EP, &ep1config);
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usbInitEndpointI(usbp, INTERRUPT_REQUEST_EP, &ep2config);
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usbInitEndpointI(usbp, DATA_AVAILABLE_EP, &ep3config);
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chSysUnlockFromIsr();
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return;
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case USB_EVENT_SUSPEND:
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return;
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case USB_EVENT_WAKEUP:
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return;
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case USB_EVENT_STALLED:
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return;
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}
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return;
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}
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/*
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* Serial over USB driver configuration.
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*/
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static const SerialUSBConfig serusbcfg = {
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&USBD1,
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{
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usb_event,
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get_descriptor,
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sduRequestsHook,
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NULL
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},
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DATA_REQUEST_EP,
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DATA_AVAILABLE_EP,
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INTERRUPT_REQUEST_EP
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};
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/*===========================================================================*/
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/* Generic code. */
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/*===========================================================================*/
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/*
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* Red LED blinker thread, times are in milliseconds.
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*/
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static WORKING_AREA(waThread1, 128);
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static msg_t Thread1(void *arg) {
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(void)arg;
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while (TRUE) {
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palClearPad(IOPORT3, GPIOC_LED);
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chThdSleepMilliseconds(500);
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palSetPad(IOPORT3, GPIOC_LED);
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chThdSleepMilliseconds(500);
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}
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}
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/*
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* USB CDC loopback thread.
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*/
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static WORKING_AREA(waThread2, 256);
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static msg_t Thread2(void *arg) {
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SerialUSBDriver *sdup = arg;
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EventListener el;
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chEvtRegisterMask(chIOGetEventSource(&SDU1), &el, 1);
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while (TRUE) {
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chEvtWaitAny(ALL_EVENTS);
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if (chOQIsEmptyI(&SDU1.oqueue)) {
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uint8_t buffer[0x40];
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size_t n = chIQReadTimeout(&sdup->iqueue, buffer,
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sizeof(buffer), TIME_IMMEDIATE);
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if (n > 0)
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chOQWriteTimeout(&sdup->oqueue, buffer, n, TIME_IMMEDIATE);
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}
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}
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}
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/*
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* Application entry point.
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*/
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int main(void) {
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/*
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* System initializations.
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* - HAL initialization, this also initializes the configured device drivers
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* and performs the board-specific initializations.
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* - Kernel initialization, the main() function becomes a thread and the
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* RTOS is active.
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*/
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halInit();
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chSysInit();
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/*
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* Activates the USB driver and then the USB bus pull-up on D+.
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*/
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sduObjectInit(&SDU1);
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sduStart(&SDU1, &serusbcfg);
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palClearPad(GPIOC, GPIOC_USB_DISC);
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/*
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* Activates the serial driver 2 using the driver default configuration.
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*/
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sdStart(&SD2, NULL);
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/*
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* Creates the blinker thread.
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*/
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chThdCreateStatic(waThread1, sizeof(waThread1), NORMALPRIO, Thread1, NULL);
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/*
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* Creates the USB CDC loopback thread.
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*/
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chThdCreateStatic(waThread2, sizeof(waThread2), NORMALPRIO, Thread2, &SDU1);
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/*
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* Normal main() thread activity, in this demo it does nothing except
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* sleeping in a loop and check the button state.
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*/
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while (TRUE) {
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if (palReadPad(IOPORT1, GPIOA_BUTTON))
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TestThread(&SD2);
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chThdSleepMilliseconds(1000);
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}
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}
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