diff options
| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-11-02 09:34:38 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2014-11-02 09:34:38 +0000 |
| commit | eaa8acff48439e8b416dc396e7fceb0ae3daaa8e (patch) | |
| tree | b4dcd63128c00acd438ca73f8b77c0b501970570 /os/hal/templates | |
| parent | ca14dc68facb6fb81862199229e677526d0ee1f1 (diff) | |
| download | ChibiOS-eaa8acff48439e8b416dc396e7fceb0ae3daaa8e.tar.gz ChibiOS-eaa8acff48439e8b416dc396e7fceb0ae3daaa8e.tar.bz2 ChibiOS-eaa8acff48439e8b416dc396e7fceb0ae3daaa8e.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7455 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/templates')
| -rw-r--r-- | os/hal/templates/icu_lld.c | 187 | ||||
| -rw-r--r-- | os/hal/templates/icu_lld.h | 193 | ||||
| -rw-r--r-- | os/hal/templates/osal/osal.c (renamed from os/hal/templates/osal.c) | 0 | ||||
| -rw-r--r-- | os/hal/templates/osal/osal.h (renamed from os/hal/templates/osal.h) | 12 | ||||
| -rw-r--r-- | os/hal/templates/pwm_lld.c | 216 | ||||
| -rw-r--r-- | os/hal/templates/pwm_lld.h | 216 |
6 files changed, 818 insertions, 6 deletions
diff --git a/os/hal/templates/icu_lld.c b/os/hal/templates/icu_lld.c new file mode 100644 index 000000000..9ec44cd40 --- /dev/null +++ b/os/hal/templates/icu_lld.c @@ -0,0 +1,187 @@ +/*
+ ChibiOS/HAL - Copyright (C) 2006-2014 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.
+*/
+/*
+ Concepts and parts of this file have been contributed by Fabio Utzig and
+ Xo Wang.
+ */
+
+/**
+ * @file PLATFORM/icu_lld.c
+ * @brief PLATFORM ICU subsystem low level driver header.
+ *
+ * @addtogroup ICU
+ * @{
+ */
+
+#include "hal.h"
+
+#if HAL_USE_ICU || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/**
+ * @brief ICUD1 driver identifier.
+ * @note The driver ICUD1 allocates the complex timer TIM1 when enabled.
+ */
+#if PLATFORM_ICU_USE_ICU1 || defined(__DOXYGEN__)
+ICUDriver ICUD1;
+#endif
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Low level ICU driver initialization.
+ *
+ * @notapi
+ */
+void icu_lld_init(void) {
+
+#if PLATFORM_ICU_USE_ICU1
+ /* Driver initialization.*/
+ icuObjectInit(&ICUD1);
+#endif
+}
+
+/**
+ * @brief Configures and activates the ICU peripheral.
+ *
+ * @param[in] icup pointer to the @p ICUDriver object
+ *
+ * @notapi
+ */
+void icu_lld_start(ICUDriver *icup) {
+
+ if (icup->state == ICU_STOP) {
+ /* Clock activation and timer reset.*/
+#if PLATFORM_ICU_USE_ICU1
+ if (&ICUD1 == icup) {
+
+ }
+#endif
+}
+
+/**
+ * @brief Deactivates the ICU peripheral.
+ *
+ * @param[in] icup pointer to the @p ICUDriver object
+ *
+ * @notapi
+ */
+void icu_lld_stop(ICUDriver *icup) {
+
+ if (icup->state == ICU_READY) {
+ /* Clock deactivation.*/
+#if PLATFORM_ICU_USE_ICU1
+ if (&ICUD1 == icup) {
+
+ }
+#endif
+}
+
+/**
+ * @brief Starts the input capture.
+ *
+ * @param[in] icup pointer to the @p ICUDriver object
+ *
+ * @notapi
+ */
+void icu_lld_start_capture(ICUDriver *icup) {
+
+ (void)icup;
+}
+
+/**
+ * @brief Waits for a completed capture.
+ * @note The operation is performed in polled mode.
+ * @note In order to use this function notifications must be disabled.
+ *
+ * @param[in] icup pointer to the @p ICUDriver object
+ * @return The capture status.
+ * @retval false if the capture is successful.
+ * @retval true if a timer overflow occurred.
+ *
+ * @notapi
+ */
+bool icu_lld_wait_capture(ICUDriver *icup) {
+
+ (void)icup;
+
+ return false;
+}
+
+/**
+ * @brief Stops the input capture.
+ *
+ * @param[in] icup pointer to the @p ICUDriver object
+ *
+ * @notapi
+ */
+void icu_lld_stop_capture(ICUDriver *icup) {
+
+ (void)icup;
+}
+
+/**
+ * @brief Enables notifications.
+ * @pre The ICU unit must have been activated using @p icuStart().
+ * @note If the notification is already enabled then the call has no effect.
+ *
+ * @param[in] icup pointer to the @p ICUDriver object
+ *
+ * @api
+ */
+void icu_lld_enable_notifications(ICUDriver *icup) {
+
+ (void)icup;
+}
+
+/**
+ * @brief Disables notifications.
+ * @pre The ICU unit must have been activated using @p icuStart().
+ * @note If the notification is already disabled then the call has no effect.
+ *
+ * @param[in] icup pointer to the @p ICUDriver object
+ *
+ * @api
+ */
+void icu_lld_disable_notifications(ICUDriver *icup) {
+
+ (void)icup;
+}
+
+#endif /* HAL_USE_ICU */
+
+/** @} */
diff --git a/os/hal/templates/icu_lld.h b/os/hal/templates/icu_lld.h new file mode 100644 index 000000000..db1e9e5c1 --- /dev/null +++ b/os/hal/templates/icu_lld.h @@ -0,0 +1,193 @@ +/*
+ ChibiOS/HAL - Copyright (C) 2006-2014 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 PLATFORM/icu_lld.h
+ * @brief PLATFORM ICU subsystem low level driver header.
+ *
+ * @addtogroup ICU
+ * @{
+ */
+
+#ifndef _ICU_LLD_H_
+#define _ICU_LLD_H_
+
+#if HAL_USE_ICU || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @name Configuration options
+ * @{
+ */
+/**
+ * @brief ICUD1 driver enable switch.
+ * @details If set to @p TRUE the support for ICUD1 is included.
+ * @note The default is @p TRUE.
+ */
+#if !defined(PLATFORM_ICU_USE_ICU1) || defined(__DOXYGEN__)
+#define PLATFORM_ICU_USE_ICU1 FALSE
+#endif
+/** @} */
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief ICU driver mode.
+ */
+typedef enum {
+ ICU_INPUT_ACTIVE_HIGH = 0, /**< Trigger on rising edge. */
+ ICU_INPUT_ACTIVE_LOW = 1, /**< Trigger on falling edge. */
+} icumode_t;
+
+/**
+ * @brief ICU frequency type.
+ */
+typedef uint32_t icufreq_t;
+
+/**
+ * @brief ICU counter type.
+ */
+typedef uint32_t icucnt_t;
+
+/**
+ * @brief Driver configuration structure.
+ * @note It could be empty on some architectures.
+ */
+typedef struct {
+ /**
+ * @brief Driver mode.
+ */
+ icumode_t mode;
+ /**
+ * @brief Timer clock in Hz.
+ * @note The low level can use assertions in order to catch invalid
+ * frequency specifications.
+ */
+ icufreq_t frequency;
+ /**
+ * @brief Callback for pulse width measurement.
+ */
+ icucallback_t width_cb;
+ /**
+ * @brief Callback for cycle period measurement.
+ */
+ icucallback_t period_cb;
+ /**
+ * @brief Callback for timer overflow.
+ */
+ icucallback_t overflow_cb;
+ /* End of the mandatory fields.*/
+} ICUConfig;
+
+/**
+ * @brief Structure representing an ICU driver.
+ */
+struct ICUDriver {
+ /**
+ * @brief Driver state.
+ */
+ icustate_t state;
+ /**
+ * @brief Current configuration data.
+ */
+ const ICUConfig *config;
+#if defined(ICU_DRIVER_EXT_FIELDS)
+ ICU_DRIVER_EXT_FIELDS
+#endif
+ /* End of the mandatory fields.*/
+};
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/**
+ * @brief Returns the width of the latest pulse.
+ * @details The pulse width is defined as number of ticks between the start
+ * edge and the stop edge.
+ *
+ * @param[in] icup pointer to the @p ICUDriver object
+ * @return The number of ticks.
+ *
+ * @notapi
+ */
+#define icu_lld_get_width(icup) 0
+
+/**
+ * @brief Returns the width of the latest cycle.
+ * @details The cycle width is defined as number of ticks between a start
+ * edge and the next start edge.
+ *
+ * @param[in] icup pointer to the @p ICUDriver object
+ * @return The number of ticks.
+ *
+ * @notapi
+ */
+#define icu_lld_get_period(icup) 0
+
+/**
+ * @brief Check on notifications status.
+ *
+ * @param[in] icup pointer to the @p ICUDriver object
+ * @return The notifications status.
+ * @retval false if notifications are not enabled.
+ * @retval true if notifications are enabled.
+ *
+ * @notapi
+ */
+#define icu_lld_are_notifications_enabled(icup) false
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#if PLATFORM_ICU_USE_ICU1 && !defined(__DOXYGEN__)
+extern ICUDriver ICUD1;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void icu_lld_init(void);
+ void icu_lld_start(ICUDriver *icup);
+ void icu_lld_stop(ICUDriver *icup);
+ void icu_lld_start_capture(ICUDriver *icup);
+ bool icu_lld_wait_capture(ICUDriver *icup);
+ void icu_lld_stop_capture(ICUDriver *icup);
+ void icu_lld_enable_notifications(ICUDriver *icup);
+ void icu_lld_disable_notifications(ICUDriver *icup);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_ICU */
+
+#endif /* _ICU_LLD_H_ */
+
+/** @} */
diff --git a/os/hal/templates/osal.c b/os/hal/templates/osal/osal.c index 091489ba6..091489ba6 100644 --- a/os/hal/templates/osal.c +++ b/os/hal/templates/osal/osal.c diff --git a/os/hal/templates/osal.h b/os/hal/templates/osal/osal.h index 7212bdf65..fdad4dcbb 100644 --- a/os/hal/templates/osal.h +++ b/os/hal/templates/osal/osal.h @@ -114,7 +114,7 @@ typedef uint32_t eventflags_t; typedef struct {
volatile eventflags_t flags; /**< @brief Flags stored into the
object. */
-} eventsource_t;
+} event_source_t;
/**
* @brief Type of a mutex.
@@ -339,7 +339,7 @@ void osalThreadSleep(systime_t time) { *
* @init
*/
-static inline void osalEventInit(eventsource_t *esp) {
+static inline void osalEventInit(event_source_t *esp) {
osalDbgCheck(esp != NULL);
@@ -354,7 +354,7 @@ static inline void osalEventInit(eventsource_t *esp) { *
* @iclass
*/
-static inline void osalEventBroadcastFlagsI(eventsource_t *esp,
+static inline void osalEventBroadcastFlagsI(event_source_t *esp,
eventflags_t flags) {
osalDbgCheck(esp != NULL);
@@ -370,7 +370,7 @@ static inline void osalEventBroadcastFlagsI(eventsource_t *esp, *
* @iclass
*/
-static inline void osalEventBroadcastFlags(eventsource_t *esp,
+static inline void osalEventBroadcastFlags(event_source_t *esp,
eventflags_t flags) {
osalDbgCheck(esp != NULL);
@@ -390,7 +390,7 @@ static inline void osalEventBroadcastFlags(eventsource_t *esp, *
* @iclass
*/
-static inline eventflags_t osalEventGetAndClearFlagsI(eventsource_t *esp) {
+static inline eventflags_t osalEventGetAndClearFlagsI(event_source_t *esp) {
eventflags_t flags;
osalDbgCheck(esp != NULL);
@@ -410,7 +410,7 @@ static inline eventflags_t osalEventGetAndClearFlagsI(eventsource_t *esp) { *
* @api
*/
-static inline eventflags_t osalEventGetAndClearFlags(eventsource_t *esp) {
+static inline eventflags_t osalEventGetAndClearFlags(event_source_t *esp) {
eventflags_t flags;
osalSysLock();
diff --git a/os/hal/templates/pwm_lld.c b/os/hal/templates/pwm_lld.c new file mode 100644 index 000000000..c33fc0d4b --- /dev/null +++ b/os/hal/templates/pwm_lld.c @@ -0,0 +1,216 @@ +/*
+ ChibiOS/HAL - Copyright (C) 2006-2014 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 PLATFORM/pwm_lld.c
+ * @brief PLATFORM PWM subsystem low level driver header.
+ *
+ * @addtogroup PWM
+ * @{
+ */
+
+#include "hal.h"
+
+#if HAL_USE_PWM || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/**
+ * @brief PWMD1 driver identifier.
+ * @note The driver PWMD1 allocates the complex timer TIM1 when enabled.
+ */
+#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
+}
+
+/**
+ * @brief Configures and activates the PWM peripheral.
+ * @note Starting a driver that is already in the @p PWM_READY state
+ * disables all the active channels.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ *
+ * @notapi
+ */
+void pwm_lld_start(PWMDriver *pwmp) {
+
+ if (pwmp->state == PWM_STOP) {
+ /* Clock activation and timer reset.*/
+#if PLATFORM_PWM_USE_PWM1
+ if (&PWMD1 == pwmp) {
+
+ }
+#endif
+ }
+}
+
+/**
+ * @brief Deactivates the PWM peripheral.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ *
+ * @notapi
+ */
+void pwm_lld_stop(PWMDriver *pwmp) {
+
+ /* If in ready state then disables the PWM clock.*/
+ if (pwmp->state == PWM_READY) {
+#if PLATFORM_PWM_USE_PWM1
+ if (&PWMD1 == pwmp) {
+
+ }
+#endif
+}
+
+/**
+ * @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 The function has effect at the next cycle start.
+ * @note Channel notification is not enabled.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ * @param[in] channel PWM channel identifier (0...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;
+}
+
+/**
+ * @brief Disables a PWM channel and its notification.
+ * @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 The function has effect at the next cycle start.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ * @param[in] channel PWM channel identifier (0...channels-1)
+ *
+ * @notapi
+ */
+void pwm_lld_disable_channel(PWMDriver *pwmp, pwmchannel_t channel) {
+
+ (void)pwmp;
+}
+
+/**
+ * @brief Enables the periodic activation edge notification.
+ * @pre The PWM unit must have been activated using @p pwmStart().
+ * @note If the notification is already enabled then the call has no effect.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ *
+ * @notapi
+ */
+void pwm_lld_enable_periodic_notification(PWMDriver *pwmp) {
+
+ (void)pwmp;
+}
+
+/**
+ * @brief Disables the periodic activation edge notification.
+ * @pre The PWM unit must have been activated using @p pwmStart().
+ * @note If the notification is already disabled then the call has no effect.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ *
+ * @notapi
+ */
+void pwm_lld_disable_periodic_notification(PWMDriver *pwmp) {
+
+ (void)pwmp;
+}
+
+/**
+ * @brief Enables a channel de-activation edge notification.
+ * @pre The PWM unit must have been activated using @p pwmStart().
+ * @pre The channel must have been activated using @p pwmEnableChannel().
+ * @note If the notification is already enabled then the call has no effect.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ * @param[in] channel PWM channel identifier (0...channels-1)
+ *
+ * @notapi
+ */
+void pwm_lld_enable_channel_notification(PWMDriver *pwmp,
+ pwmchannel_t channel) {
+
+ (void)pwmp;
+ (void)channel;
+}
+
+/**
+ * @brief Disables a channel de-activation edge notification.
+ * @pre The PWM unit must have been activated using @p pwmStart().
+ * @pre The channel must have been activated using @p pwmEnableChannel().
+ * @note If the notification is already disabled then the call has no effect.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ * @param[in] channel PWM channel identifier (0...channels-1)
+ *
+ * @notapi
+ */
+void pwm_lld_disable_channel_notification(PWMDriver *pwmp,
+ pwmchannel_t channel) {
+
+ (void)pwmp;
+ (void)channel;
+}
+
+#endif /* HAL_USE_PWM */
+
+/** @} */
diff --git a/os/hal/templates/pwm_lld.h b/os/hal/templates/pwm_lld.h new file mode 100644 index 000000000..5b0789b4e --- /dev/null +++ b/os/hal/templates/pwm_lld.h @@ -0,0 +1,216 @@ +/*
+ ChibiOS/HAL - Copyright (C) 2006-2014 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 PLATFORM/pwm_lld.h
+ * @brief PLATFORM PWM subsystem low level driver header.
+ *
+ * @addtogroup PWM
+ * @{
+ */
+
+#ifndef _PWM_LLD_H_
+#define _PWM_LLD_H_
+
+#if HAL_USE_PWM || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/**
+ * @brief Number of PWM channels per PWM driver.
+ */
+#define PWM_CHANNELS 4
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @name Configuration options
+ * @{
+ */
+/**
+ * @brief If advanced timer features switch.
+ * @details If set to @p TRUE the advanced features for TIM1 and TIM8 are
+ * enabled.
+ * @note The default is @p TRUE.
+ */
+#if !defined(PLATFORM_PWM_USE_ADVANCED) || defined(__DOXYGEN__)
+#define PLATFORM_PWM_USE_ADVANCED FALSE
+#endif
+/** @} */
+
+/*===========================================================================*/
+/* Configuration checks. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/**
+ * @brief Type of a PWM mode.
+ */
+typedef uint32_t pwmmode_t;
+
+/**
+ * @brief Type of a PWM channel.
+ */
+typedef uint8_t pwmchannel_t;
+
+/**
+ * @brief Type of a channels mask.
+ */
+typedef uint32_t pwmchnmsk_t;
+
+/**
+ * @brief Type of a PWM counter.
+ */
+typedef uint32_t pwmcnt_t;
+
+/**
+ * @brief Type of a PWM driver channel configuration structure.
+ */
+typedef struct {
+ /**
+ * @brief Channel active logic level.
+ */
+ pwmmode_t mode;
+ /**
+ * @brief Channel callback pointer.
+ * @note This callback is invoked on the channel compare event. If set to
+ * @p NULL then the callback is disabled.
+ */
+ pwmcallback_t callback;
+ /* End of the mandatory fields.*/
+} PWMChannelConfig;
+
+/**
+ * @brief Type of a PWM driver configuration structure.
+ */
+typedef struct {
+ /**
+ * @brief Timer clock in Hz.
+ * @note The low level can use assertions in order to catch invalid
+ * frequency specifications.
+ */
+ uint32_t frequency;
+ /**
+ * @brief PWM period in ticks.
+ * @note The low level can use assertions in order to catch invalid
+ * period specifications.
+ */
+ pwmcnt_t period;
+ /**
+ * @brief Periodic callback pointer.
+ * @note This callback is invoked on PWM counter reset. If set to
+ * @p NULL then the callback is disabled.
+ */
+ pwmcallback_t callback;
+ /**
+ * @brief Channels configurations.
+ */
+ PWMChannelConfig channels[PWM_CHANNELS];
+ /* End of the mandatory fields.*/
+} PWMConfig;
+
+/**
+ * @brief Structure representing a PWM driver.
+ */
+struct PWMDriver {
+ /**
+ * @brief Driver state.
+ */
+ pwmstate_t state;
+ /**
+ * @brief Current driver configuration data.
+ */
+ const PWMConfig *config;
+ /**
+ * @brief Current PWM period in ticks.
+ */
+ pwmcnt_t period;
+ /**
+ * @brief Mask of the enabled channels.
+ */
+ pwmchnmsk_t enabled;
+ /**
+ * @brief Number of channels in this instance.
+ */
+ pwmchannel_t channels;
+#if defined(PWM_DRIVER_EXT_FIELDS)
+ PWM_DRIVER_EXT_FIELDS
+#endif
+ /* End of the mandatory fields.*/
+};
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/**
+ * @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
+ */
+#define pwm_lld_change_period(pwmp, period)
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#if PLATFORM_PWM_USE_PWM1 && !defined(__DOXYGEN__)
+extern PWMDriver PWMD1;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void pwm_lld_init(void);
+ void pwm_lld_start(PWMDriver *pwmp);
+ void pwm_lld_stop(PWMDriver *pwmp);
+ void pwm_lld_enable_channel(PWMDriver *pwmp,
+ pwmchannel_t channel,
+ pwmcnt_t width);
+ void pwm_lld_disable_channel(PWMDriver *pwmp, pwmchannel_t channel);
+ void pwm_lld_enable_periodic_notification(PWMDriver *pwmp);
+ void pwm_lld_disable_periodic_notification(PWMDriver *pwmp);
+ void pwm_lld_enable_channel_notification(PWMDriver *pwmp,
+ pwmchannel_t channel);
+ void pwm_lld_disable_channel_notification(PWMDriver *pwmp,
+ pwmchannel_t channel);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_PWM */
+
+#endif /* _PWM_LLD_H_ */
+
+/** @} */
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