diff options
| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-02-16 09:12:08 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-02-16 09:12:08 +0000 |
| commit | 27261ab8a6ade925246c1dec80ead3f4a9c651c2 (patch) | |
| tree | 02076fa154699192b1c741b9104572f4e6596b37 /os/hal/include | |
| parent | 1bdcf39d7b55642ae26bc32ffed1fdc36cfc9d56 (diff) | |
| download | ChibiOS-27261ab8a6ade925246c1dec80ead3f4a9c651c2.tar.gz ChibiOS-27261ab8a6ade925246c1dec80ead3f4a9c651c2.tar.bz2 ChibiOS-27261ab8a6ade925246c1dec80ead3f4a9c651c2.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6715 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/include')
| -rw-r--r-- | os/hal/include/hal.h | 1 | ||||
| -rw-r--r-- | os/hal/include/i2s.h | 175 |
2 files changed, 176 insertions, 0 deletions
diff --git a/os/hal/include/hal.h b/os/hal/include/hal.h index 01ed0dd1d..a66376f3b 100644 --- a/os/hal/include/hal.h +++ b/os/hal/include/hal.h @@ -51,6 +51,7 @@ #include "ext.h"
#include "gpt.h"
#include "i2c.h"
+#include "i2s.h"
#include "icu.h"
//#include "mac.h"
#include "pwm.h"
diff --git a/os/hal/include/i2s.h b/os/hal/include/i2s.h new file mode 100644 index 000000000..ae7d0173b --- /dev/null +++ b/os/hal/include/i2s.h @@ -0,0 +1,175 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+ 2011,2012,2013 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 i2s.h
+ * @brief I2S Driver macros and structures.
+ *
+ * @addtogroup I2S
+ * @{
+ */
+
+#ifndef _I2S_H_
+#define _I2S_H_
+
+#if HAL_USE_I2S || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/**
+ * @name I2S modes
+ * @{
+ */
+#define I2S_MODE_SLAVE 0
+#define I2S_MODE_MASTER 1
+#define I2S_MODE_TX 2
+#define I2S_MODE_RX 4
+#define I2S_MODE_TXRX (I2S_MODE_TX | I2S_MODE_RX)
+#define I2S_MODE_CONTINUOUS 16
+/** @} */
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief Driver state machine possible states.
+ */
+typedef enum {
+ I2S_UNINIT = 0, /**< Not initialized. */
+ I2S_STOP = 1, /**< Stopped. */
+ I2S_READY = 2, /**< Ready. */
+ I2S_ACTIVE = 3, /**< Active. */
+ I2S_COMPLETE = 4 /**< Transmission complete. */
+} i2sstate_t;
+
+#include "i2s_lld.h"
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/**
+ * @name Macro Functions
+ * @{
+ */
+/**
+ * @brief Starts a I2S data exchange.
+ *
+ * @param[in] i2sp pointer to the @p I2SDriver object
+ *
+ * @iclass
+ */
+#define i2sStartExchangeI(i2sp) { \
+ i2s_lld_start_exchange(i2sp); \
+ (i2sp)->state = I2S_ACTIVE; \
+}
+
+/**
+ * @brief Stops the ongoing data exchange.
+ * @details The ongoing data exchange, if any, is stopped, if the driver
+ * was not active the function does nothing.
+ *
+ * @param[in] i2sp pointer to the @p I2SDriver object
+ *
+ * @iclass
+ */
+#define i2sStopExchangeI(i2sp) { \
+ i2s_lld_stop_exchange(i2sp); \
+ (i2sp)->state = I2S_READY; \
+}
+
+/**
+ * @brief Common ISR code, half buffer event.
+ * @details This code handles the portable part of the ISR code:
+ * - Callback invocation.
+ * .
+ * @note This macro is meant to be used in the low level drivers
+ * implementation only.
+ *
+ * @param[in] i2sp pointer to the @p I2CDriver object
+ *
+ * @notapi
+ */
+#define _i2S_isr_half_code(i2sp) { \
+ if ((i2sp)->end_cb != NULL) { \
+ (i2sp)->end_cb(i2sp, 0, (i2sp)->config->depth / 2); \
+ } \
+}
+
+/**
+ * @brief Common ISR code.
+ * @details This code handles the portable part of the ISR code:
+ * - Callback invocation.
+ * - Driver state transitions.
+ * .
+ * @note This macro is meant to be used in the low level drivers
+ * implementation only.
+ *
+ * @param[in] i2sp pointer to the @p I2CDriver object
+ *
+ * @notapi
+ */
+#define _i2s_isr_code(i2sp) { \
+ if ((i2sp)->config->end_cb) { \
+ (i2sp)->state = I2S_COMPLETE; \
+ (i2sp)->config->end_cb(i2sp, \
+ (i2sp)->config->depth / 2, \
+ (i2sp)->config->depth / 2); \
+ if ((i2sp)->state == I2S_COMPLETE) \
+ (i2sp)->state = I2S_READY; \
+ } \
+ else \
+ (i2sp)->state = I2S_READY; \
+}
+/** @} */
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void i2sInit(void);
+ void i2sObjectInit(I2SDriver *i2sp);
+ void i2sStart(I2SDriver *i2sp, const I2SConfig *config);
+ void i2sStop(I2SDriver *i2sp);
+ void i2sStartExchange(I2SDriver *i2sp);
+ void i2sStopExchange(I2SDriver *i2sp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_I2S */
+
+#endif /* _I2S_H_ */
+
+/** @} */
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