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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-08-12 16:01:07 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-08-12 16:01:07 +0000 |
| commit | 78e314cdada1c3dba3078d3b8645f90687676bd9 (patch) | |
| tree | 635583b6f86cd02d8e3c0c51a913d8f35f4a26bc /os/hal/src | |
| parent | 67e80419b7acb17801c0cff68632a99450dc393a (diff) | |
| download | ChibiOS-78e314cdada1c3dba3078d3b8645f90687676bd9.tar.gz ChibiOS-78e314cdada1c3dba3078d3b8645f90687676bd9.tar.bz2 ChibiOS-78e314cdada1c3dba3078d3b8645f90687676bd9.zip | |
Ported GPT.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6141 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/src')
| -rw-r--r-- | os/hal/src/gpt.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/os/hal/src/gpt.c b/os/hal/src/gpt.c new file mode 100644 index 000000000..780ac407e --- /dev/null +++ b/os/hal/src/gpt.c @@ -0,0 +1,267 @@ +/*
+ 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 gpt.c
+ * @brief GPT Driver code.
+ *
+ * @addtogroup GPT
+ * @{
+ */
+
+#include "hal.h"
+
+#if HAL_USE_GPT || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief GPT Driver initialization.
+ * @note This function is implicitly invoked by @p halInit(), there is
+ * no need to explicitly initialize the driver.
+ *
+ * @init
+ */
+void gptInit(void) {
+
+ gpt_lld_init();
+}
+
+/**
+ * @brief Initializes the standard part of a @p GPTDriver structure.
+ *
+ * @param[out] gptp pointer to the @p GPTDriver object
+ *
+ * @init
+ */
+void gptObjectInit(GPTDriver *gptp) {
+
+ gptp->state = GPT_STOP;
+ gptp->config = NULL;
+}
+
+/**
+ * @brief Configures and activates the GPT peripheral.
+ *
+ * @param[in] gptp pointer to the @p GPTDriver object
+ * @param[in] config pointer to the @p GPTConfig object
+ *
+ * @api
+ */
+void gptStart(GPTDriver *gptp, const GPTConfig *config) {
+
+ osalDbgCheck((gptp != NULL) && (config != NULL));
+
+ osalSysLock();
+ osalDbgAssert((gptp->state == GPT_STOP) || (gptp->state == GPT_READY),
+ "invalid state");
+ gptp->config = config;
+ gpt_lld_start(gptp);
+ gptp->state = GPT_READY;
+ osalSysUnlock();
+}
+
+/**
+ * @brief Deactivates the GPT peripheral.
+ *
+ * @param[in] gptp pointer to the @p GPTDriver object
+ *
+ * @api
+ */
+void gptStop(GPTDriver *gptp) {
+
+ osalDbgCheck(gptp != NULL);
+
+ osalSysLock();
+ osalDbgAssert((gptp->state == GPT_STOP) || (gptp->state == GPT_READY),
+ "invalid state");
+ gpt_lld_stop(gptp);
+ gptp->state = GPT_STOP;
+ osalSysUnlock();
+}
+
+/**
+ * @brief Changes the interval of GPT peripheral.
+ * @details This function changes the interval of a running GPT unit.
+ * @pre The GPT unit must have been activated using @p gptStart().
+ * @pre The GPT unit must have been running in continuous mode using
+ * @p gptStartContinuous().
+ * @post The GPT unit interval is changed to the new value.
+ *
+ * @param[in] gptp pointer to a @p GPTDriver object
+ * @param[in] interval new cycle time in timer ticks
+ *
+ * @api
+ */
+void gptChangeInterval(GPTDriver *gptp, gptcnt_t interval) {
+
+ osalDbgCheck(gptp != NULL);
+
+ osalSysLock();
+ osalDbgAssert(gptp->state == GPT_CONTINUOUS,
+ "invalid state");
+ gptChangeIntervalI(gptp, interval);
+ osalSysUnlock();
+}
+
+/**
+ * @brief Starts the timer in continuous mode.
+ *
+ * @param[in] gptp pointer to the @p GPTDriver object
+ * @param[in] interval period in ticks
+ *
+ * @api
+ */
+void gptStartContinuous(GPTDriver *gptp, gptcnt_t interval) {
+
+ osalSysLock();
+ gptStartContinuousI(gptp, interval);
+ osalSysUnlock();
+}
+
+/**
+ * @brief Starts the timer in continuous mode.
+ *
+ * @param[in] gptp pointer to the @p GPTDriver object
+ * @param[in] interval period in ticks
+ *
+ * @iclass
+ */
+void gptStartContinuousI(GPTDriver *gptp, gptcnt_t interval) {
+
+ osalDbgCheckClassI();
+ osalDbgCheck(gptp != NULL);
+ osalDbgAssert(gptp->state == GPT_READY,
+ "invalid state");
+
+ gptp->state = GPT_CONTINUOUS;
+ gpt_lld_start_timer(gptp, interval);
+}
+
+/**
+ * @brief Starts the timer in one shot mode.
+ *
+ * @param[in] gptp pointer to the @p GPTDriver object
+ * @param[in] interval time interval in ticks
+ *
+ * @api
+ */
+void gptStartOneShot(GPTDriver *gptp, gptcnt_t interval) {
+
+ osalSysLock();
+ gptStartOneShotI(gptp, interval);
+ osalSysUnlock();
+}
+
+/**
+ * @brief Starts the timer in one shot mode.
+ *
+ * @param[in] gptp pointer to the @p GPTDriver object
+ * @param[in] interval time interval in ticks
+ *
+ * @api
+ */
+void gptStartOneShotI(GPTDriver *gptp, gptcnt_t interval) {
+
+ osalDbgCheckClassI();
+ osalDbgCheck(gptp != NULL);
+ osalDbgAssert(gptp->state == GPT_READY,
+ "invalid state");
+
+ gptp->state = GPT_ONESHOT;
+ gpt_lld_start_timer(gptp, interval);
+}
+
+/**
+ * @brief Stops the timer.
+ *
+ * @param[in] gptp pointer to the @p GPTDriver object
+ *
+ * @api
+ */
+void gptStopTimer(GPTDriver *gptp) {
+
+ osalSysLock();
+ gptStopTimerI(gptp);
+ osalSysUnlock();
+}
+
+/**
+ * @brief Stops the timer.
+ *
+ * @param[in] gptp pointer to the @p GPTDriver object
+ *
+ * @api
+ */
+void gptStopTimerI(GPTDriver *gptp) {
+
+ osalDbgCheckClassI();
+ osalDbgCheck(gptp != NULL);
+ osalDbgAssert((gptp->state == GPT_READY) || (gptp->state == GPT_CONTINUOUS) ||
+ (gptp->state == GPT_ONESHOT),
+ "invalid state");
+
+ gptp->state = GPT_READY;
+ gpt_lld_stop_timer(gptp);
+}
+
+/**
+ * @brief Starts the timer in one shot mode and waits for completion.
+ * @details This function specifically polls the timer waiting for completion
+ * in order to not have extra delays caused by interrupt servicing,
+ * this function is only recommended for short delays.
+ * @note The configured callback is not invoked when using this function.
+ *
+ * @param[in] gptp pointer to the @p GPTDriver object
+ * @param[in] interval time interval in ticks
+ *
+ * @api
+ */
+void gptPolledDelay(GPTDriver *gptp, gptcnt_t interval) {
+
+ osalDbgAssert(gptp->state == GPT_READY,
+ "invalid state");
+
+ gptp->state = GPT_ONESHOT;
+ gpt_lld_polled_delay(gptp, interval);
+ gptp->state = GPT_READY;
+}
+
+#endif /* HAL_USE_GPT */
+
+/** @} */
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