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

2 files changed, 263 insertions, 0 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_ */

+

+/** @} */