diff options
Diffstat (limited to 'os')
| -rw-r--r-- | os/hal/ports/NRF51/NRF51822/hal_pwm_lld.c | 365 | ||||
| -rw-r--r-- | os/hal/ports/NRF51/NRF51822/hal_pwm_lld.h | 276 | ||||
| -rw-r--r-- | os/hal/ports/NRF51/NRF51822/platform.mk | 6 |
3 files changed, 646 insertions, 1 deletions
diff --git a/os/hal/ports/NRF51/NRF51822/hal_pwm_lld.c b/os/hal/ports/NRF51/NRF51822/hal_pwm_lld.c new file mode 100644 index 0000000..6952fcb --- /dev/null +++ b/os/hal/ports/NRF51/NRF51822/hal_pwm_lld.c @@ -0,0 +1,365 @@ +/*
+ ChibiOS/HAL - Copyright (C) 2016 Stéphane D'Alu
+
+ 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 hal_pwm_lld.c
+ * @brief NRF51 PWM subsystem low level driver source.
+ *
+ * @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 timer TIMER0 when enabled.
+ */
+#if NRF51_PWM_USE_TIMER0 || defined(__DOXYGEN__)
+PWMDriver PWMD1;
+#endif
+
+/**
+ * @brief PWMD2 driver identifier.
+ * @note The driver PWMD2 allocates the timer TIMER1 when enabled.
+ */
+#if NRF51_PWM_USE_TIMER1 || defined(__DOXYGEN__)
+PWMDriver PWMD2;
+#endif
+
+/**
+ * @brief PWMD3 driver identifier.
+ * @note The driver PWMD3 allocates the timer TIMER2 when enabled.
+ */
+#if NRF51_PWM_USE_TIMER2 || defined(__DOXYGEN__)
+PWMDriver PWMD3;
+#endif
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+static void pwm_lld_serve_interrupt(PWMDriver *pwmp) {
+ // Deal with PWM period
+ if (pwmp->timer->EVENTS_COMPARE[pwmp->channels]) {
+ pwmp->timer->EVENTS_COMPARE[pwmp->channels] = 0;
+
+ if (pwmp->config->callback != NULL) {
+ pwmp->config->callback(pwmp);
+ }
+ }
+
+ // Deal with PWM channels
+ for (uint8_t n = 0 ; n < pwmp->channels ; n++) {
+ if (pwmp->timer->EVENTS_COMPARE[n]) {
+ pwmp->timer->EVENTS_COMPARE[n] = 0;
+ if (pwmp->config->channels[n].callback != NULL) {
+ pwmp->config->channels[n].callback(pwmp);
+ }
+ }
+ }
+}
+
+/*===========================================================================*/
+/* Driver interrupt handlers. */
+/*===========================================================================*/
+
+#if NRF51_PWM_USE_TIMER0
+/**
+ * @brief TIMER0 interrupt handler.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(Vector60) {
+ OSAL_IRQ_PROLOGUE();
+ pwm_lld_serve_interrupt(&PWMD1);
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* NRF51_PWM_USE_TIMER0 */
+
+#if NRF51_PWM_USE_TIMER1
+/**
+ * @brief TIMER1 interrupt handler.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(Vector64) {
+ OSAL_IRQ_PROLOGUE();
+ pwm_lld_serve_interrupt(&PWMD2);
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* NRF51_PWM_USE_TIMER1 */
+
+#if NRF51_PWM_USE_TIMER2
+/**
+ * @brief TIMER2 interrupt handler.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(Vector68) {
+ OSAL_IRQ_PROLOGUE();
+ pwm_lld_serve_interrupt(&PWMD3);
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* NRF51_PWM_USE_TIMER2 */
+
+/*===========================================================================*/
+/* Driver exported functions. */
+/*===========================================================================*/
+
+/**
+ * @brief Low level PWM driver initialization.
+ *
+ * @notapi
+ */
+void pwm_lld_init(void) {
+
+#if NRF51_PWM_USE_TIMER0
+ pwmObjectInit(&PWMD1);
+ PWMD1.channels = PWM_CHANNELS;
+ PWMD1.timer = NRF_TIMER0;
+#endif
+
+#if NRF51_PWM_USE_TIMER1
+ pwmObjectInit(&PWMD2);
+ PWMD2.channels = PWM_CHANNELS;
+ PWMD2.timer = NRF_TIMER1;
+#endif
+
+#if NRF51_PWM_USE_TIMER2
+ pwmObjectInit(&PWMD3);
+ PWMD3.channels = PWM_CHANNELS;
+ PWMD3.timer = NRF_TIMER2;
+#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) {
+ // Prescaler value calculation: ftimer = 16MHz / 2^PRESCALER
+ uint16_t psc_ratio = NRF51_HFCLK_FREQUENCY / pwmp->config->frequency;
+ // Prescaler ratio must be between 1 and 512, and a power of two.
+ osalDbgAssert(psc_ratio <= 512 && !(psc_ratio & (psc_ratio - 1)),
+ "invalid frequency");
+ // Prescaler value as a power of 2, must be 0..9
+ uint32_t psc_value;
+ for (psc_value = 0; psc_value < 10; psc_value++)
+ if (psc_ratio == (unsigned)(1 << psc_value))
+ break;
+
+
+ // Configure as 16bits timer (only TIMER0 support 32bits)
+ pwmp->timer->BITMODE = TIMER_BITMODE_BITMODE_16Bit;
+ pwmp->timer->MODE = TIMER_MODE_MODE_Timer;
+
+ // With clear shortcuts for period
+ pwmp->timer->SHORTS =
+ 0x1UL << (TIMER_SHORTS_COMPARE0_CLEAR_Pos + pwmp->channels);
+
+ // Disable and reset interrupts for compare events
+ pwmp->timer->INTENCLR = (TIMER_INTENCLR_COMPARE0_Msk |
+ TIMER_INTENCLR_COMPARE1_Msk |
+ TIMER_INTENCLR_COMPARE2_Msk |
+ TIMER_INTENCLR_COMPARE3_Msk );
+ pwmp->timer->EVENTS_COMPARE[0] = 0;
+ pwmp->timer->EVENTS_COMPARE[1] = 0;
+ pwmp->timer->EVENTS_COMPARE[2] = 0;
+ pwmp->timer->EVENTS_COMPARE[3] = 0;
+
+ // Set prescaler
+ pwmp->timer->PRESCALER = psc_value;
+
+ // Set period
+ pwmp->timer->CC[pwmp->channels] = pwmp->period;
+
+ // Clear everything
+ pwmp->timer->TASKS_CLEAR = 1;
+
+
+ // Enable interrupt
+#if NRF51_PWM_USE_TIMER0
+ if (&PWMD1 == pwmp) {
+ nvicEnableVector(TIMER0_IRQn, NRF51_PWM_TIMER0_PRIORITY);
+ }
+#endif
+
+#if NRF51_PWM_USE_TIMER1
+ if (&PWMD2 == pwmp) {
+ nvicEnableVector(TIMER1_IRQn, NRF51_PWM_TIMER1_PRIORITY);
+ }
+#endif
+
+#if NRF51_PWM_USE_TIMER2
+ if (&PWMD3 == pwmp) {
+ nvicEnableVector(TIMER2_IRQn, NRF51_PWM_TIMER2_PRIORITY);
+ }
+#endif
+
+ // Start timer
+ pwmp->timer->TASKS_START = 1;
+}
+
+/**
+ * @brief Deactivates the PWM peripheral.
+ *
+ * @param[in] pwmp pointer to a @p PWMDriver object
+ *
+ * @notapi
+ */
+void pwm_lld_stop(PWMDriver *pwmp) {
+ pwmp->timer->TASKS_STOP = 1;
+
+#if NRF51_PWM_USE_TIMER0
+ if (&PWMD1 == pwmp) {
+ nvicDisableVector(TIMER0_IRQn);
+ }
+#endif
+
+#if NRF51_PWM_USE_TIMER1
+ if (&PWMD2 == pwmp) {
+ nvicDisableVector(TIMER1_IRQn);
+ }
+#endif
+
+#if NRF51_PWM_USE_TIMER2
+ if (&PWMD3 == pwmp) {
+ nvicDisableVector(TIMER2_IRQn);
+ }
+#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) {
+ pwmp->timer->CC[channel] = 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) {
+ pwmp->timer->CC[channel] = 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) {
+ pwmp->timer->INTENSET =
+ 0x1UL << (TIMER_INTENSET_COMPARE0_Pos + pwmp->channels);
+}
+
+/**
+ * @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) {
+ pwmp->timer->INTENCLR =
+ 0x1UL << (TIMER_INTENCLR_COMPARE0_Pos + pwmp->channels);
+}
+
+/**
+ * @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) {
+ pwmp->timer->INTENSET =
+ 0x1UL << (TIMER_INTENSET_COMPARE0_Pos + 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) {
+ pwmp->timer->INTENCLR =
+ 0x1UL << (TIMER_INTENCLR_COMPARE0_Pos + channel);
+}
+
+#endif /* HAL_USE_PWM */
+
+/** @} */
diff --git a/os/hal/ports/NRF51/NRF51822/hal_pwm_lld.h b/os/hal/ports/NRF51/NRF51822/hal_pwm_lld.h new file mode 100644 index 0000000..0ddd65c --- /dev/null +++ b/os/hal/ports/NRF51/NRF51822/hal_pwm_lld.h @@ -0,0 +1,276 @@ +/*
+ ChibiOS/HAL - Copyright (C) 2016 Stéphane D'Alu
+
+ 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 hal_pwm_lld.h
+ * @brief NRF51 PWM subsystem low level driver header.
+ *
+ * @addtogroup PWM
+ * @{
+ */
+
+#ifndef HAL_PWM_LLD_H_
+#define HAL_PWM_LLD_H_
+
+#if HAL_USE_PWM || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/**
+ * @brief Number of PWM channels per PWM driver.
+ */
+#define PWM_CHANNELS 3
+
+
+#define PWM_FREQUENCY_16MHZ 16000000 /** @brief 16MHz */
+#define PWM_FREQUENCY_8MHZ 8000000 /** @brief 8MHz */
+#define PWM_FREQUENCY_4MHZ 4000000 /** @brief 4MHz */
+#define PWM_FREQUENCY_2MHZ 2000000 /** @brief 2MHz */
+#define PWM_FREQUENCY_1MHZ 1000000 /** @brief 1MHz */
+#define PWM_FREQUENCY_500KHZ 500000 /** @brief 500kHz */
+#define PWM_FREQUENCY_250KHZ 250000 /** @brief 250kHz */
+#define PWM_FREQUENCY_125KHZ 125000 /** @brief 125kHz */
+#define PWM_FREQUENCY_62500HZ 62500 /** @brief 62500Hz */
+#define PWM_FREQUENCY_31250HZ 31250 /** @brief 31250Hz */
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+#if !defined(NRF51_PWM_USE_TIMER0)
+#define NRF51_PWM_USE_TIMER0 FALSE
+#endif
+
+#if !defined(NRF51_PWM_USE_TIMER1)
+#define NRF51_PWM_USE_TIMER1 FALSE
+#endif
+
+#if !defined(NRF51_PWM_USE_TIMER2)
+#define NRF51_PWM_USE_TIMER2 FALSE
+#endif
+
+/**
+ * @brief TIMER0 interrupt priority level setting.
+ */
+#if !defined(NRF51_PWM_TIMER0_PRIORITY) || defined(__DOXYGEN__)
+#define NRF51_PWM_TIMER0_PRIORITY 12
+#endif
+
+/**
+ * @brief TIMER1 interrupt priority level setting.
+ */
+#if !defined(NRF51_PWM_TIMER1_PRIORITY) || defined(__DOXYGEN__)
+#define NRF51_PWM_TIMER1_PRIORITY 12
+#endif
+
+/**
+ * @brief TIMER2 interrupt priority level setting.
+ */
+#if !defined(NRF51_PWM_TIMER2_PRIORITY) || defined(__DOXYGEN__)
+#define NRF51_PWM_TIMER2_PRIORITY 12
+#endif
+
+/** @} */
+
+/**
+ * @name Configuration options
+ * @{
+ */
+/** @} */
+
+/*===========================================================================*/
+/* Configuration checks. */
+/*===========================================================================*/
+
+#if !NRF51_PWM_USE_TIMER0 && !NRF51_PWM_USE_TIMER1 && !NRF51_PWM_USE_TIMER2
+#error "PWM driver activated but no TIMER peripheral assigned"
+#endif
+
+#if (NRF51_ST_USE_TIMER0 == TRUE) && (NRF51_PWM_USE_TIMER0 == TRUE)
+#error "TIMER0 used for ST and PWM"
+#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 TIMER registers block.
+ */
+ NRF_TIMER_Type *timer;
+};
+
+/*===========================================================================*/
+/* 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) \
+ do { \
+ (pwmp)->timer->CC[(pwmp)->channels] = ((period) - 1); \
+ } while(0)
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#if NRF51_PWM_USE_TIMER0 || defined(__DOXYGEN__)
+extern PWMDriver PWMD1;
+#endif
+#if NRF51_PWM_USE_TIMER1 || defined(__DOXYGEN__)
+extern PWMDriver PWMD2;
+#endif
+#if NRF51_PWM_USE_TIMER2 || 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 /* HAL_PWM_LLD_H_ */
+
+/** @} */
diff --git a/os/hal/ports/NRF51/NRF51822/platform.mk b/os/hal/ports/NRF51/NRF51822/platform.mk index fbe977e..b937e39 100644 --- a/os/hal/ports/NRF51/NRF51822/platform.mk +++ b/os/hal/ports/NRF51/NRF51822/platform.mk @@ -34,6 +34,9 @@ endif ifneq ($(findstring HAL_USE_RNG TRUE,$(HALCONF)),) PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/NRF51/NRF51822/hal_rng_lld.c endif +ifneq ($(findstring HAL_USE_PWM TRUE,$(HALCONF)),) +PLATFORMSRC += ${CHIBIOS_CONTRIB}/os/hal/ports/NRF51/NRF51822/hal_pwm_lld.c +endif else PLATFORMSRC = ${CHIBIOS}/os/hal/ports/common/ARMCMx/nvic.c \ ${CHIBIOS_CONTRIB}/os/hal/ports/NRF51/NRF51822/hal_lld.c \ @@ -47,7 +50,8 @@ PLATFORMSRC = ${CHIBIOS}/os/hal/ports/common/ARMCMx/nvic.c \ ${CHIBIOS_CONTRIB}/os/hal/ports/NRF51/NRF51822/hal_adc_lld.c \ ${CHIBIOS_CONTRIB}/os/hal/ports/NRF51/NRF51822/hal_gpt_lld.c \ ${CHIBIOS_CONTRIB}/os/hal/ports/NRF51/NRF51822/hal_wdg_lld.c \ - ${CHIBIOS_CONTRIB}/os/hal/ports/NRF51/NRF51822/hal_rng_lld.c + ${CHIBIOS_CONTRIB}/os/hal/ports/NRF51/NRF51822/hal_rng_lld.c \ + ${CHIBIOS_CONTRIB}/os/hal/ports/NRF51/NRF51822/hal_pwm_lld.c endif # Required include directories |