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Diffstat (limited to 'os/hal/src/gpt.c')
| -rw-r--r-- | os/hal/src/gpt.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/os/hal/src/gpt.c b/os/hal/src/gpt.c new file mode 100644 index 000000000..5027079cf --- /dev/null +++ b/os/hal/src/gpt.c @@ -0,0 +1,228 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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 "ch.h"
+#include "hal.h"
+
+#if HAL_USE_GPT || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* 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) {
+
+ chDbgCheck((gptp != NULL) && (config != NULL), "ptStart");
+
+ chSysLock();
+ chDbgAssert((gptp->state == GPT_STOP) || (gptp->state == GPT_READY),
+ "gptStart(), #1", "invalid state");
+ gptp->config = config;
+ gpt_lld_start(gptp);
+ gptp->state = GPT_READY;
+ chSysUnlock();
+}
+
+/**
+ * @brief Deactivates the GPT peripheral.
+ *
+ * @param[in] gptp pointer to the @p GPTDriver object
+ *
+ * @api
+ */
+void gptStop(GPTDriver *gptp) {
+
+ chDbgCheck(gptp != NULL, "gptStop");
+
+ chSysLock();
+ chDbgAssert((gptp->state == GPT_STOP) || (gptp->state == GPT_READY),
+ "gptStop(), #1", "invalid state");
+ gpt_lld_stop(gptp);
+ gptp->state = GPT_STOP;
+ chSysUnlock();
+}
+
+/**
+ * @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) {
+
+ chSysLock();
+ gptStartContinuousI(gptp, interval);
+ chSysUnlock();
+}
+
+/**
+ * @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) {
+
+ chDbgAssert(gptp->state == GPT_READY,
+ "gptStartContinuousI(), #1", "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) {
+
+ chSysLock();
+ gptStartOneShotI(gptp, interval);
+ chSysUnlock();
+}
+
+/**
+ * @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) {
+
+ chDbgAssert(gptp->state == GPT_READY,
+ "gptStartOneShotI(), #1", "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) {
+
+ chSysLock();
+ gptStopTimerI(gptp);
+ chSysUnlock();
+}
+
+/**
+ * @brief Stops the timer.
+ *
+ * @param[in] gptp pointer to the @p GPTDriver object
+ *
+ * @api
+ */
+void gptStopTimerI(GPTDriver *gptp) {
+
+ chDbgAssert((gptp->state == GPT_READY) || (gptp->state == GPT_CONTINUOUS) ||
+ (gptp->state == GPT_ONESHOT),
+ "gptStopTimerI(), #1", "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) {
+
+ chDbgAssert(gptp->state == GPT_READY,
+ "gptPolledDelay(), #1", "invalid state");
+ gptp->state = GPT_ONESHOT;
+ gpt_lld_polled_delay(gptp, interval);
+}
+
+#endif /* HAL_USE_GPT */
+
+/** @} */
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