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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1097 35acf78f-673a-0410-8e92-d51de3d6d3f4

master
gdisirio 2009-08-21 09:55:47 +00:00
parent 1b7573aa16
commit c3fa78f3d1
5 changed files with 267 additions and 4 deletions
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116
os/io/platforms/AT91SAM7X/serial_lld.c Normal file
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@ -0,0 +1,116 @@
/*
ChibiOS/RT - Copyright (C) 2006-2007 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 AT91SAM7X/serial_lld.c
* @brief AT91SAM7X low level serial driver code
* @addtogroup AT91SAM7X_SERIAL
* @{
*/
#include <ch.h>
#include <serial.h>
#include "at91lib/aic.h"
/** @brief Driver default configuration.*/
static const SerialDriverConfig default_config = {
};
/*===========================================================================*/
/* Low Level Driver local functions. */
/*===========================================================================*/
/**
* @brief USART initialization.
* @param[in] u pointer to an USART I/O block
* @param[in] config the architecture-dependent serial driver configuration
*/
void usart_init(AT91PS_USART u, const SerialDriverConfig *config) {
/* Disables IRQ sources and stop operations.*/
u->US_IDR = 0xFFFFFFFF;
u->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX | AT91C_US_RSTSTA;
/* New parameters setup.*/
if (config->mr & AT91C_US_OVER)
u->US_BRGR = MCK / (config->speed * 8);
else
u->US_BRGR = MCK / (config->speed * 16);
u->US_MR = config->mr;
u->US_RTOR = 0;
u->US_TTGR = 0;
/* Enables operations and IRQ sources.*/
u->US_CR = AT91C_US_RXEN | AT91C_US_TXEN | AT91C_US_DTREN | AT91C_US_RTSEN;
u->US_IER = AT91C_US_RXRDY | AT91C_US_OVRE | AT91C_US_FRAME | AT91C_US_PARE |
AT91C_US_RXBRK;
}
/**
* @brief USART de-initialization.
* @param[in] u pointer to an USART I/O block
*/
void usart_deinit(AT91PS_USART u) {
}
/*===========================================================================*/
/* Low Level Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Low Level Driver exported functions. */
/*===========================================================================*/
/**
* Low level serial driver initialization.
*/
void sd_lld_init(void) {
}
/**
* @brief Low level serial driver configuration and (re)start.
*
* @param[in] sdp pointer to a @p SerialDriver object
* @param[in] config the architecture-dependent serial driver configuration.
* If this parameter is set to @p NULL then a default
* configuration is used.
*/
void sd_lld_start(SerialDriver *sdp, const SerialDriverConfig *config) {
if (config == NULL)
config = &default_config;
}
/**
* @brief Low level serial driver stop.
* @details De-initializes the USART, stops the associated clock, resets the
* interrupt vector.
*
* @param[in] sdp pointer to a @p SerialDriver object
*/
void sd_lld_stop(SerialDriver *sdp) {
}
/** @} */

147
os/io/platforms/AT91SAM7X/serial_lld.h Normal file
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@ -0,0 +1,147 @@
/*
ChibiOS/RT - Copyright (C) 2006-2007 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 AT91SAM7X/serial_lld.h
* @brief AT91SAM7X low level serial driver header
* @addtogroup AT91SAM7X_SERIAL
* @{
*/
#ifndef _SERIAL_LLD_H_
#define _SERIAL_LLD_H_
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @brief Serial buffers size.
* @details Configuration parameter, you can change the depth of the queue
* buffers depending on the requirements of your application.
* @note The default is 128 bytes for both the transmission and receive buffers.
*/
#if !defined(SERIAL_BUFFERS_SIZE) || defined(__DOXYGEN__)
#define SERIAL_BUFFERS_SIZE 128
#endif
/**
* @brief UART0 driver enable switch.
* @details If set to @p TRUE the support for USART1 is included.
* @note The default is @p TRUE.
*/
#if !defined(USE_SAM7X_USART0) || defined(__DOXYGEN__)
#define USE_SAM7X_USART0 TRUE
#endif
/**
* @brief UART1 driver enable switch.
* @details If set to @p TRUE the support for USART2 is included.
* @note The default is @p TRUE.
*/
#if !defined(USE_SAM7X_USART1) || defined(__DOXYGEN__)
#define USE_SAM7X_USART1 TRUE
#endif
/*===========================================================================*/
/* Unsupported event flags and custom events. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* Serial Driver condition flags type.
*/
typedef uint32_t sdflags_t;
/**
* @brief @p SerialDriver specific data.
*/
struct _serial_driver_data {
/**
* Input queue, incoming data can be read from this input queue by
* using the queues APIs.
*/
InputQueue iqueue;
/**
* Output queue, outgoing data can be written to this output queue by
* using the queues APIs.
*/
OutputQueue oqueue;
/**
* Status Change @p EventSource. This event is generated when one or more
* condition flags change.
*/
EventSource sevent;
/**
* I/O driver status flags.
*/
sdflags_t flags;
/**
* Input circular buffer.
*/
uint8_t ib[SERIAL_BUFFERS_SIZE];
/**
* Output circular buffer.
*/
uint8_t ob[SERIAL_BUFFERS_SIZE];
};
/**
* @brief Generic Serial Driver static initializer.
* @details An instance of this structure must be passed to @p sdStart()
* in order to configure and start a serial driver operations.
*
* @note This structure content is architecture dependent, each driver
* implementation defines its own version and the custom static
* initializers.
*/
typedef struct {
uint32_t speed;
uint32_t mr;
} SerialDriverConfig;
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
/** @cond never*/
#if !defined(USE_SAM7X_USART0)
extern FullDuplexDriver COM1;
#endif
#if !defined(USE_SAM7X_USART1)
extern FullDuplexDriver COM2;
#endif
#ifdef __cplusplus
extern "C" {
#endif
void sd_lld_init(void);
void sd_lld_start(SerialDriver *sdp, const SerialDriverConfig *config);
void sd_lld_stop(SerialDriver *sdp);
#ifdef __cplusplus
}
#endif
/** @endcond*/
#endif /* _SERIAL_LLD_H_ */
/** @} */

2
os/io/platforms/LPC214x/serial_lld.c
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@ -58,7 +58,7 @@ static const SerialDriverConfig default_config = {
*/
void uart_init(UART *u, const SerialDriverConfig *config) {
uint32_t div = PCLK / (config->baud_rate << 4);
uint32_t div = PCLK / (config->speed << 4);
u->UART_LCR = config->lcr | LCR_DLAB;
u->UART_DLL = div;
u->UART_DLM = div >> 8;

4
os/io/platforms/STM32F103/serial_lld.c
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@ -71,9 +71,9 @@ static void usart_init(USART_TypeDef *u, const SerialDriverConfig *config) {
* Baud rate setting.
*/
if (u == USART1)
u->BRR = APB2CLK / config->baud_rate;
u->BRR = APB2CLK / config->speed;
else
u->BRR = APB1CLK / config->baud_rate;
u->BRR = APB1CLK / config->speed;
/*
* Note that some bits are enforced.

2
os/io/platforms/STM32F103/serial_lld.h
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@ -169,7 +169,7 @@ struct _serial_driver_data {
*/
typedef struct {
uint32_t baud_rate;
uint32_t speed;
uint16_t cr1;
uint16_t cr2;
uint16_t cr3;