git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1249 35acf78f-673a-0410-8e92-d51de3d6d3f4

os/io/templates/spi_lld.c

@@ -0,0 +1,31 @@
+/*
+    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 templates/spi_lld.c
+ * @brief SPI Driver subsystem low level driver source template
+ * @addtogroup SPI_LLD
+ * @{
+ */
+
+#include <ch.h>
+#include <spi.h>
+
+
+/** @} */

os/io/templates/spi_lld.h

@@ -0,0 +1,114 @@
+/*
+    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 templates/spi_lld.h
+ * @brief SPI Driver subsystem low level driver header template
+ * @addtogroup SPI_LLD
+ * @{
+ */
+
+#ifndef _SPI_LLD_H_
+#define _SPI_LLD_H_
+
+/*===========================================================================*/
+/* Driver pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/**
+ * @brief Enables the mutual exclusion APIs on the SPI bus.
+ */
+#if !defined(SPI_USE_MUTUAL_EXCLUSION) || defined(__DOXYGEN__)
+#define SPI_USE_MUTUAL_EXCLUSION    TRUE
+#endif
+
+#if SPI_USE_MUTUAL_EXCLUSION && !CH_USE_MUTEXES && !CH_USE_SEMAPHORES
+#error "SPI_USE_MUTUAL_EXCLUSION requires CH_USE_MUTEXES and/or CH_USE_SEMAPHORES"
+#endif
+
+/*===========================================================================*/
+/* Driver data structures and types.                                         */
+/*===========================================================================*/
+
+/**
+ * @brief Driver state machine possible states.
+ */
+typedef enum {
+  SPI_UNINIT = 0,//!< SPI_UNINIT
+  SPI_IDLE = 1,  //!< SPI_IDLE
+  SPI_ACTIVE = 2 //!< SPI_ACTIVE
+} spistate_t;
+
+/**
+ * @brief Driver configuration structure.
+ */
+typedef struct {
+  /**
+   * @brief Clock pulses to be generated after initialization.
+   */
+  cnt_t                 spc_clkpulses;
+  /* End of the mandatory fields.*/
+} SPIConfig;
+
+/**
+ * @brief Structure representing a MAC driver.
+ */
+typedef struct {
+#if CH_DBG_ENABLE_ASSERTS || defined(__DOXYGEN__)
+  /**
+   * @brief Driver state.
+   */
+  spistate_t            spd_state;
+#endif /* CH_DBG_ENABLE_ASSERTS */
+#if SPI_USE_MUTUAL_EXCLUSION || defined(__DOXYGEN__)
+#if CH_USE_MUTEXES || defined(__DOXYGEN__)
+  /**
+   * @brief Mutex protecting the bus.
+   */
+  Mutex                 spd_mutex;
+#elif CH_USE_SEMAPHORES
+  Semaphore             spd_semaphore;
+#endif
+#endif /* SPI_USE_MUTUAL_EXCLUSION */
+  /**
+   * Current configuration data.
+   */
+  const SPIConfig       *spd_config;
+  /* End of the mandatory fields.*/
+} SPIDriver;
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void spi_lld_init(void);
+  void spi_lld_setup(SPIDriver *spip);
+  void spi_lld_select(SPIDriver *spip);
+  void spi_lld_unselect(SPIDriver *spip);
+  void spi_lld_exchange(SPIDriver *spip, size_t n, void *rxbuf, void *txbuf);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SPI_LLD_H_ */
+
+/** @} */