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Diffstat (limited to 'os/hal/templates/pwm_lld.c')
| -rw-r--r-- | os/hal/templates/pwm_lld.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/os/hal/templates/pwm_lld.c b/os/hal/templates/pwm_lld.c new file mode 100644 index 000000000..a38290334 --- /dev/null +++ b/os/hal/templates/pwm_lld.c @@ -0,0 +1,186 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/**
+ * @file templates/pwm_lld.c
+ * @brief PWM Driver subsystem low level driver source template.
+ *
+ * @addtogroup PWM
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+#if HAL_USE_PWM || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/**
+ * @brief PWM1 driver identifier.
+ */
+#if PLATFORM_PWM_USE_PWM1 || defined(__DOXYGEN__)
+PWMDriver PWMD1;
+#endif
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Low level PWM driver initialization.
+ *
+ * @notapi
+ */
+void pwm_lld_init(void) {
+
+#if PLATFORM_PWM_USE_PWM1
+ /* Driver initialization.*/
+ pwmObjectInit(&PWMD1);
+#endif /* PLATFORM_PWM_USE_PWM1 */
+}
+
+/**
+ * @brief Configures and activates the PWM peripheral.
+ *
+ * @param[in] pwmp pointer to the @p PWMDriver object
+ *
+ * @notapi
+ */
+void pwm_lld_start(PWMDriver *pwmp) {
+
+ if (pwmp->state == PWM_STOP) {
+ /* Enables the peripheral.*/
+#if PLATFORM_PWM_USE_PWM1
+ if (&PWMD1 == pwmp) {
+
+ }
+#endif /* PLATFORM_PWM_USE_PWM1 */
+ }
+ /* Configures the peripheral.*/
+
+}
+
+/**
+ * @brief Deactivates the PWM peripheral.
+ *
+ * @param[in] pwmp pointer to the @p PWMDriver object
+ *
+ * @notapi
+ */
+void pwm_lld_stop(PWMDriver *pwmp) {
+
+ if (pwmp->state == PWM_READY) {
+ /* Resets the peripheral.*/
+
+ /* Disables the peripheral.*/
+#if PLATFORM_PWM_USE_PWM1
+ if (&PWMD1 == pwmp) {
+
+ }
+#endif /* PLATFORM_PWM_USE_PWM1 */
+ }
+}
+
+/**
+ * @brief Changes the period the PWM peripheral.
+ * @details This function changes the period of a PWM unit that has already
+ * been activated using @p pwmStart().
+ * @pre The PWM unit must have been activated using @p pwmStart().
+ * @post The PWM unit period is changed to the new value.
+ * @note The function has effect at the next cycle start.
+ * @note If a period is specified that is shorter than the pulse width
+ * programmed in one of the channels then the behavior is not
+ * guaranteed.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ * @param[in] period new cycle time in ticks
+ *
+ * @notapi
+ */
+void pwm_lld_change_period(PWMDriver *pwmp, pwmcnt_t period) {
+
+ (void)pwmp;
+ (void)period;
+
+}
+
+/**
+ * @brief Enables a PWM channel.
+ * @pre The PWM unit must have been activated using @p pwmStart().
+ * @post The channel is active using the specified configuration.
+ * @note Depending on the hardware implementation this function has
+ * effect starting on the next cycle (recommended implementation)
+ * or immediately (fallback implementation).
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ * @param[in] channel PWM channel identifier (0...PWM_CHANNELS-1)
+ * @param[in] width PWM pulse width as clock pulses number
+ *
+ * @notapi
+ */
+void pwm_lld_enable_channel(PWMDriver *pwmp,
+ pwmchannel_t channel,
+ pwmcnt_t width) {
+
+ (void)pwmp;
+ (void)channel;
+ (void)width;
+
+}
+
+/**
+ * @brief Disables a PWM channel.
+ * @pre The PWM unit must have been activated using @p pwmStart().
+ * @post The channel is disabled and its output line returned to the
+ * idle state.
+ * @note Depending on the hardware implementation this function has
+ * effect starting on the next cycle (recommended implementation)
+ * or immediately (fallback implementation).
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ * @param[in] channel PWM channel identifier (0...PWM_CHANNELS-1)
+ *
+ * @notapi
+ */
+void pwm_lld_disable_channel(PWMDriver *pwmp, pwmchannel_t channel) {
+
+ (void)pwmp;
+ (void)channel;
+
+}
+
+#endif /* HAL_USE_PWM */
+
+/** @} */
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