From c3fa78f3d1a9216d3827184d1e5a4ce78bb79e2d Mon Sep 17 00:00:00 2001 From: gdisirio Date: Fri, 21 Aug 2009 09:55:47 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1097 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/io/platforms/AT91SAM7X/serial_lld.c | 116 ++++++++++++++++++++++++++ os/io/platforms/AT91SAM7X/serial_lld.h | 147 +++++++++++++++++++++++++++++++++ os/io/platforms/LPC214x/serial_lld.c | 2 +- os/io/platforms/STM32F103/serial_lld.c | 4 +- os/io/platforms/STM32F103/serial_lld.h | 2 +- 5 files changed, 267 insertions(+), 4 deletions(-) create mode 100644 os/io/platforms/AT91SAM7X/serial_lld.c create mode 100644 os/io/platforms/AT91SAM7X/serial_lld.h diff --git a/os/io/platforms/AT91SAM7X/serial_lld.c b/os/io/platforms/AT91SAM7X/serial_lld.c new file mode 100644 index 000000000..40b00483d --- /dev/null +++ b/os/io/platforms/AT91SAM7X/serial_lld.c @@ -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 . +*/ + +/** + * @file AT91SAM7X/serial_lld.c + * @brief AT91SAM7X low level serial driver code + * @addtogroup AT91SAM7X_SERIAL + * @{ + */ + +#include +#include + +#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) { + +} + +/** @} */ diff --git a/os/io/platforms/AT91SAM7X/serial_lld.h b/os/io/platforms/AT91SAM7X/serial_lld.h new file mode 100644 index 000000000..dfd41398d --- /dev/null +++ b/os/io/platforms/AT91SAM7X/serial_lld.h @@ -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 . +*/ + +/** + * @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_ */ + +/** @} */ diff --git a/os/io/platforms/LPC214x/serial_lld.c b/os/io/platforms/LPC214x/serial_lld.c index 88fd99f42..09884a3fe 100644 --- a/os/io/platforms/LPC214x/serial_lld.c +++ b/os/io/platforms/LPC214x/serial_lld.c @@ -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; diff --git a/os/io/platforms/STM32F103/serial_lld.c b/os/io/platforms/STM32F103/serial_lld.c index 55074f51b..09849605c 100644 --- a/os/io/platforms/STM32F103/serial_lld.c +++ b/os/io/platforms/STM32F103/serial_lld.c @@ -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. diff --git a/os/io/platforms/STM32F103/serial_lld.h b/os/io/platforms/STM32F103/serial_lld.h index 89b28815f..5460d4a57 100644 --- a/os/io/platforms/STM32F103/serial_lld.h +++ b/os/io/platforms/STM32F103/serial_lld.h @@ -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; -- cgit v1.2.3