diff options
Diffstat (limited to 'os/io/platforms')
-rw-r--r-- | os/io/platforms/AT91SAM7X/serial_lld.c | 116 | ||||
-rw-r--r-- | os/io/platforms/AT91SAM7X/serial_lld.h | 147 | ||||
-rw-r--r-- | os/io/platforms/LPC214x/serial_lld.c | 2 | ||||
-rw-r--r-- | os/io/platforms/STM32F103/serial_lld.c | 4 | ||||
-rw-r--r-- | os/io/platforms/STM32F103/serial_lld.h | 2 |
5 files changed, 267 insertions, 4 deletions
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 <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) {
+
+}
+
+/** @} */
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 <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_ */
+
+/** @} */
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;
|