[KINETIS] Add PWM driver contributed by Adam Porter

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7501 35acf78f-673a-0410-8e92-d51de3d6d3f4

4 files changed, 693 insertions, 0 deletions

diff --git a/os/hal/ports/KINETIS/KL2x/kinetis_tpm.h b/os/hal/ports/KINETIS/KL2x/kinetis_tpm.h
new file mode 100644
index 000000000..c29350bba
--- /dev/null
+++ b/os/hal/ports/KINETIS/KL2x/kinetis_tpm.h
@@ -0,0 +1,120 @@
+/*
+    ChibiOS/HAL - Copyright (C) 2014 Adam J. Porter
+
+    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    KL2x/kinetis_tpm.h
+ * @brief   Kinetis TPM registers layout header.
+ *
+ * @addtogroup HAL
+ * @{
+ */
+
+#ifndef _KINETIS_TPM_H_
+#define _KINETIS_TPM_H_
+
+/*===========================================================================*/
+/* Driver constants.                                                         */
+/*===========================================================================*/
+
+/**
+ * @name    TPM_SC register
+ * @{
+ */
+#define TPM_SC_CMOD_DISABLE       (0 << 3)
+#define TPM_SC_CMOD_LPTPM_CLK     (1 << 3)
+#define TPM_SC_CMOD_LPTPM_EXTCLK  (2 << 3)
+#define TPM_SC_CPWMS              (1 << 5)
+#define TPM_SC_TOIE               (1 << 6)
+#define TPM_SC_TOF                (1 << 7)
+#define TPM_SC_DMA                (1 << 8)
+/** @} */
+
+/**
+ * @name    TPM_MOD register
+ * @{
+ */
+#define TPM_MOD_MASK            (0xFFFF)
+/** @} */
+
+/**
+ * @name    TPM_CnSC register
+ * @{
+ */
+#define TPM_CnSC_DMA   (1 << 0)
+#define TPM_CnSC_ELSA  (1 << 2)
+#define TPM_CnSC_ELSB  (1 << 3)
+#define TPM_CnSC_MSA   (1 << 4)
+#define TPM_CnSC_MSB   (1 << 5)
+#define TPM_CnSC_CHIE  (1 << 6)
+#define TPM_CnSC_CHF   (1 << 7)
+/** @} */
+
+/**
+ * @name    TPM_CnV register
+ * @{
+ */
+#define TPM_CnV_VAL_MASK (0xFFFF)
+/** @} */
+
+/**
+ * @name    TPM_STATUS register
+ * @{
+ */
+#define TPM_STATUS_CH0F (1 << 0)
+#define TPM_STATUS_CH1F (1 << 1)
+#define TPM_STATUS_CH2F (1 << 2)
+#define TPM_STATUS_CH3F (1 << 3)
+#define TPM_STATUS_CH4F (1 << 4)
+#define TPM_STATUS_CH5F (1 << 5)
+#define TPM_STATUS_TOF  (1 << 8)
+/** @} */
+
+/**
+ * @name    TPM_CONF register
+ * @{
+ */
+#define TPM_CONF_DOZEEN         (1 << 5)
+#define TPM_CONF_DBGMODE_CONT   (3 << 6)
+#define TPM_CONF_DBGMODE_PAUSE  (0 << 6)
+#define TPM_CONF_GTBEEN         (1 << 9)
+#define TPM_CONF_CSOT           (1 << 16)
+#define TPM_CONF_CSOO           (1 << 17)
+#define TPM_CONF_CROT           (1 << 18)
+#define TPM_CONF_TRGSEL(n)      ((n) << 24)
+/** @{ */
+
+/*===========================================================================*/
+/* Driver pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver macros.                                                            */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+#endif /* _KINETIS_TPM_H_ */
+
+/** @} */
diff --git a/os/hal/ports/KINETIS/KL2x/platform.mk b/os/hal/ports/KINETIS/KL2x/platform.mk
index 9179a723d..90671ee77 100644
--- a/os/hal/ports/KINETIS/KL2x/platform.mk
+++ b/os/hal/ports/KINETIS/KL2x/platform.mk
@@ -6,6 +6,7 @@ PLATFORMSRC = ${CHIBIOS}/os/hal/ports/common/ARMCMx/nvic.c \
               ${CHIBIOS}/os/hal/ports/KINETIS/LLD/i2c_lld.c \

               ${CHIBIOS}/os/hal/ports/KINETIS/LLD/ext_lld.c \

               ${CHIBIOS}/os/hal/ports/KINETIS/LLD/adc_lld.c \

+              ${CHIBIOS}/os/hal/ports/KINETIS/KL2x/pwm_lld.c \

               ${CHIBIOS}/os/hal/ports/KINETIS/KL2x/st_lld.c

 

 # Required include directories

diff --git a/os/hal/ports/KINETIS/KL2x/pwm_lld.c b/os/hal/ports/KINETIS/KL2x/pwm_lld.c
new file mode 100644
index 000000000..9314532ef
--- /dev/null
+++ b/os/hal/ports/KINETIS/KL2x/pwm_lld.c
@@ -0,0 +1,329 @@
+/*

+    ChibiOS/HAL - Copyright (C) 2014 Adam J. Porter

+

+    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    KL2x/pwm_lld.c

+ * @brief   KINETIS PWM subsystem low level driver source.

+ *

+ * @addtogroup PWM

+ * @{

+ */

+

+#include "hal.h"

+

+#if HAL_USE_PWM || defined(__DOXYGEN__)

+

+/*===========================================================================*/

+/* Driver local definitions.                                                 */

+/*===========================================================================*/

+

+#define KINETIS_TPM0_CHANNELS 6

+#define KINETIS_TPM1_CHANNELS 2

+#define KINETIS_TPM2_CHANNELS 2

+

+#define KINETIS_TPM0_HANDLER

+#define KINETIS_TPM1_HANDLER

+#define KINETIS_TPM2_HANDLER

+

+/*===========================================================================*/

+/* Driver exported variables.                                                */

+/*===========================================================================*/

+

+/**

+ * @brief   PWMD1 driver identifier.

+ * @note    The driver PWMD1 allocates the timer TPM0 when enabled.

+ */

+#if KINETIS_PWM_USE_TPM0 || defined(__DOXYGEN__)

+PWMDriver PWMD1;

+#endif

+

+/**

+ * @brief   PWMD2 driver identifier.

+ * @note    The driver PWMD2 allocates the timer TPM1 when enabled.

+ */

+#if KINETIS_PWM_USE_TPM1 || defined(__DOXYGEN__)

+PWMDriver PWMD2;

+#endif

+

+/**

+ * @brief   PWMD3 driver identifier.

+ * @note    The driver PWMD3 allocates the timer TPM2 when enabled.

+ */

+#if KINETIS_PWM_USE_TPM2 || defined(__DOXYGEN__)

+PWMDriver PWMD3;

+#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 KINETIS_PWM_USE_TPM0

+  pwmObjectInit(&PWMD1);

+  PWMD1.channels = KINETIS_TPM0_CHANNELS;

+  PWMD1.tpm = TPM0;

+#endif

+

+#if KINETIS_PWM_USE_TPM1

+  pwmObjectInit(&PWMD2);

+  PWMD2.channels = KINETIS_TPM1_CHANNELS;

+  PWMD2.tpm = TPM1;

+#endif

+

+#if KINETIS_PWM_USE_TPM2

+  pwmObjectInit(&PWMD3);

+  PWMD3.channels = KINETIS_TPM2_CHANNELS;

+  PWMD3.tpm = TPM2;

+#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) {

+  uint32_t psc;

+  int i;

+

+  if (pwmp->state == PWM_STOP) {

+    /* Clock activation and timer reset.*/

+#if KINETIS_PWM_USE_TPM0

+    if (&PWMD1 == pwmp) {

+      SIM->SCGC6 |= SIM_SCGC6_TPM0;

+    }

+#endif

+

+#if KINETIS_PWM_USE_TPM1

+    if (&PWMD2 == pwmp) {

+      SIM->SCGC6 |= SIM_SCGC6_TPM1;

+    }

+#endif

+

+#if KINETIS_PWM_USE_TPM2

+    if (&PWMD3 == pwmp) {

+      SIM->SCGC6 |= SIM_SCGC6_TPM2;

+    }

+#endif

+  }

+

+  /* Disable LPTPM counter.*/

+  pwmp->tpm->SC = 0;

+  /* Clear count register.*/

+  pwmp->tpm->CNT = 0;

+

+  /* Prescaler value calculation.*/

+  psc = (KINETIS_SYSCLK_FREQUENCY / pwmp->config->frequency);

+  /* Prescaler must be power of two between 1 and 128.*/

+  osalDbgAssert(psc <= 128 && !(psc & (psc - 1)), "invalid frequency");

+  /* Prescaler register value determination.

+     Prescaler register value conveniently corresponds to bit position,

+     i.e., register value for prescaler CLK/64 is 6 ((1 << 6) == 64).*/

+  for (i = 0; i < 8; i++) {

+    if (psc == (1UL << i)) {

+      break;

+    }

+  }

+  /* Set prescaler and clock mode.

+     This also sets the following:

+          CPWM up-counting mode

+          Timer overflow interrupt disabled

+          DMA disabled.*/

+  pwmp->tpm->SC = TPM_SC_CMOD_LPTPM_CLK | i;

+  /* Configure period.*/

+  pwmp->tpm->MOD = pwmp->period - 1;

+}

+

+/**

+ * @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 KINETIS_PWM_USE_TPM0

+    if (&PWMD1 == pwmp) {

+      SIM->SCGC6 &= ~SIM_SCGC6_TPM0;

+    }

+#endif

+

+#if KINETIS_PWM_USE_TPM1

+    if (&PWMD2 == pwmp) {

+      SIM->SCGC6 &= ~SIM_SCGC6_TPM1;

+    }

+#endif

+

+#if KINETIS_PWM_USE_TPM2

+    if (&PWMD3 == pwmp) {

+      SIM->SCGC6 &= ~SIM_SCGC6_TPM2;

+    }

+#endif

+    /* Disable LPTPM counter.*/

+    pwmp->tpm->SC = 0;

+    pwmp->tpm->MOD = 0;

+  }

+}

+

+/**

+ * @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) {

+

+  uint32_t mode = 0;

+

+  osalDbgAssert(channel <= 5, "pwm_lld_enable_channel() #1, invalid channel");

+

+  switch (pwmp->config->channels[channel].mode & PWM_OUTPUT_MASK) {

+  case PWM_OUTPUT_ACTIVE_HIGH:

+    mode = TPM_CnSC_MSB | TPM_CnSC_ELSB;

+    break;

+  case PWM_OUTPUT_ACTIVE_LOW:

+    mode = TPM_CnSC_MSB | TPM_CnSC_ELSA;

+    break;

+  default:

+    break;

+  }

+

+  pwmp->tpm->C[channel].SC |= mode;

+  pwmp->tpm->C[channel].V = width;

+}

+

+/**

+ * @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) {

+

+  osalDbgAssert(channel <= 5, "pwm_lld_disable_channel() #1, invalid channel");

+

+  pwmp->tpm->C[channel].SC = 0;

+  pwmp->tpm->C[channel].V = 0;

+}

+

+/**

+ * @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/ports/KINETIS/KL2x/pwm_lld.h b/os/hal/ports/KINETIS/KL2x/pwm_lld.h
new file mode 100644
index 000000000..078f42388
--- /dev/null
+++ b/os/hal/ports/KINETIS/KL2x/pwm_lld.h
@@ -0,0 +1,243 @@
+/*

+    ChibiOS/HAL - Copyright (C) 2014 Adam J. Porter

+

+    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    KL2x/pwm_lld.h

+ * @brief   KINETIS PWM subsystem low level driver header.

+ *

+ * @addtogroup PWM

+ * @{

+ */

+

+#ifndef _PWM_LLD_H_

+#define _PWM_LLD_H_

+

+#include "kinetis_tpm.h"

+

+#if HAL_USE_PWM || defined(__DOXYGEN__)

+

+/*===========================================================================*/

+/* Driver constants.                                                         */

+/*===========================================================================*/

+

+#if !defined(KINETIS_PWM_USE_TPM0)

+#define KINETIS_PWM_USE_TPM0 FALSE

+#endif

+#if !defined(KINETIS_PWM_USE_TPM1)

+#define KINETIS_PWM_USE_TPM1 FALSE

+#endif

+#if !defined(KINETIS_PWM_USE_TPM2)

+#define KINETIS_PWM_USE_TPM2 FALSE

+#endif

+

+/**

+ * @brief   Number of PWM channels per PWM driver.

+ */

+#define PWM_CHANNELS                            6

+

+/*===========================================================================*/

+/* 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(KINETIS_PWM_USE_ADVANCED) || defined(__DOXYGEN__)

+#define KINETIS_PWM_USE_ADVANCED              FALSE

+#endif

+/** @} */

+

+/*===========================================================================*/

+/* Configuration checks.                                                     */

+/*===========================================================================*/

+

+#if !KINETIS_PWM_USE_TPM0 && !KINETIS_PWM_USE_TPM1 && !KINETIS_PWM_USE_TPM2

+#error "PWM driver activated but no TPM peripheral assigned"

+#endif

+

+/*===========================================================================*/

+/* 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 uint16_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.*/

+  /**

+   * @brief Pointer to the TPM registers block.

+   */

+  TPM_TypeDef               *tpm;

+};

+

+/*===========================================================================*/

+/* 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)                                 \

+  ((pwmp)->tpm->MOD = ((period) - 1))

+

+/*===========================================================================*/

+/* External declarations.                                                    */

+/*===========================================================================*/

+

+#if KINETIS_PWM_USE_TPM0 || defined(__DOXYGEN__)

+extern PWMDriver PWMD1;

+#endif

+#if KINETIS_PWM_USE_TPM1 || defined(__DOXYGEN__)

+extern PWMDriver PWMD2;

+#endif

+#if KINETIS_PWM_USE_TPM2 || defined(__DOXYGEN__)

+extern PWMDriver PWMD3;

+#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_ */

+

+/** @} */