| /** |
| * Copyright (c) 2014 - 2018, Nordic Semiconductor ASA |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * 3. Neither the name of the copyright holder nor the names of its |
| * contributors may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <nrfx.h> |
| |
| #if NRFX_CHECK(NRFX_RTC_ENABLED) |
| |
| #if !(NRFX_CHECK(NRFX_RTC0_ENABLED) || NRFX_CHECK(NRFX_RTC1_ENABLED) || \ |
| NRFX_CHECK(NRFX_RTC2_ENABLED)) |
| #error "No enabled RTC instances. Check <nrfx_config.h>." |
| #endif |
| |
| #include <nrfx_rtc.h> |
| |
| #define NRFX_LOG_MODULE RTC |
| #include <nrfx_log.h> |
| |
| #define EVT_TO_STR(event) \ |
| (event == NRF_RTC_EVENT_TICK ? "NRF_RTC_EVENT_TICK" : \ |
| (event == NRF_RTC_EVENT_OVERFLOW ? "NRF_RTC_EVENT_OVERFLOW" : \ |
| (event == NRF_RTC_EVENT_COMPARE_0 ? "NRF_RTC_EVENT_COMPARE_0" : \ |
| (event == NRF_RTC_EVENT_COMPARE_1 ? "NRF_RTC_EVENT_COMPARE_1" : \ |
| (event == NRF_RTC_EVENT_COMPARE_2 ? "NRF_RTC_EVENT_COMPARE_2" : \ |
| (event == NRF_RTC_EVENT_COMPARE_3 ? "NRF_RTC_EVENT_COMPARE_3" : \ |
| "UNKNOWN EVENT")))))) |
| |
| |
| /**@brief RTC driver instance control block structure. */ |
| typedef struct |
| { |
| nrfx_drv_state_t state; /**< Instance state. */ |
| bool reliable; /**< Reliable mode flag. */ |
| uint8_t tick_latency; /**< Maximum length of interrupt handler in ticks (max 7.7 ms). */ |
| } nrfx_rtc_cb_t; |
| |
| // User callbacks local storage. |
| static nrfx_rtc_handler_t m_handlers[NRFX_RTC_ENABLED_COUNT]; |
| static nrfx_rtc_cb_t m_cb[NRFX_RTC_ENABLED_COUNT]; |
| |
| nrfx_err_t nrfx_rtc_init(nrfx_rtc_t const * const p_instance, |
| nrfx_rtc_config_t const * p_config, |
| nrfx_rtc_handler_t handler) |
| { |
| NRFX_ASSERT(p_config); |
| NRFX_ASSERT(handler); |
| nrfx_err_t err_code; |
| |
| m_handlers[p_instance->instance_id] = handler; |
| |
| if (m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED) |
| { |
| err_code = NRFX_ERROR_INVALID_STATE; |
| NRFX_LOG_WARNING("Function: %s, error code: %s.", |
| __func__, |
| NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| NRFX_IRQ_PRIORITY_SET(p_instance->irq, p_config->interrupt_priority); |
| NRFX_IRQ_ENABLE(p_instance->irq); |
| nrf_rtc_prescaler_set(p_instance->p_reg, p_config->prescaler); |
| m_cb[p_instance->instance_id].reliable = p_config->reliable; |
| m_cb[p_instance->instance_id].tick_latency = p_config->tick_latency; |
| m_cb[p_instance->instance_id].state = NRFX_DRV_STATE_INITIALIZED; |
| |
| err_code = NRFX_SUCCESS; |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| void nrfx_rtc_uninit(nrfx_rtc_t const * const p_instance) |
| { |
| uint32_t mask = NRF_RTC_INT_TICK_MASK | |
| NRF_RTC_INT_OVERFLOW_MASK | |
| NRF_RTC_INT_COMPARE0_MASK | |
| NRF_RTC_INT_COMPARE1_MASK | |
| NRF_RTC_INT_COMPARE2_MASK | |
| NRF_RTC_INT_COMPARE3_MASK; |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED); |
| |
| NRFX_IRQ_DISABLE(p_instance->irq); |
| |
| nrf_rtc_task_trigger(p_instance->p_reg, NRF_RTC_TASK_STOP); |
| nrf_rtc_event_disable(p_instance->p_reg, mask); |
| nrf_rtc_int_disable(p_instance->p_reg, mask); |
| |
| m_cb[p_instance->instance_id].state = NRFX_DRV_STATE_UNINITIALIZED; |
| NRFX_LOG_INFO("Uninitialized."); |
| } |
| |
| void nrfx_rtc_enable(nrfx_rtc_t const * const p_instance) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state == NRFX_DRV_STATE_INITIALIZED); |
| |
| nrf_rtc_task_trigger(p_instance->p_reg, NRF_RTC_TASK_START); |
| m_cb[p_instance->instance_id].state = NRFX_DRV_STATE_POWERED_ON; |
| NRFX_LOG_INFO("Enabled."); |
| } |
| |
| void nrfx_rtc_disable(nrfx_rtc_t const * const p_instance) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED); |
| |
| nrf_rtc_task_trigger(p_instance->p_reg, NRF_RTC_TASK_STOP); |
| m_cb[p_instance->instance_id].state = NRFX_DRV_STATE_INITIALIZED; |
| NRFX_LOG_INFO("Disabled."); |
| } |
| |
| nrfx_err_t nrfx_rtc_cc_disable(nrfx_rtc_t const * const p_instance, uint32_t channel) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED); |
| NRFX_ASSERT(channel<p_instance->cc_channel_count); |
| |
| nrfx_err_t err_code; |
| uint32_t int_mask = RTC_CHANNEL_INT_MASK(channel); |
| nrf_rtc_event_t event = RTC_CHANNEL_EVENT_ADDR(channel); |
| |
| nrf_rtc_event_disable(p_instance->p_reg,int_mask); |
| if (nrf_rtc_int_is_enabled(p_instance->p_reg,int_mask)) |
| { |
| nrf_rtc_int_disable(p_instance->p_reg,int_mask); |
| if (nrf_rtc_event_pending(p_instance->p_reg,event)) |
| { |
| nrf_rtc_event_clear(p_instance->p_reg,event); |
| err_code = NRFX_ERROR_TIMEOUT; |
| NRFX_LOG_WARNING("Function: %s, error code: %s.", |
| __func__, |
| NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| } |
| NRFX_LOG_INFO("RTC id: %d, channel disabled: %lu.", p_instance->instance_id, channel); |
| err_code = NRFX_SUCCESS; |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| nrfx_err_t nrfx_rtc_cc_set(nrfx_rtc_t const * const p_instance, |
| uint32_t channel, |
| uint32_t val, |
| bool enable_irq) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED); |
| NRFX_ASSERT(channel<p_instance->cc_channel_count); |
| |
| nrfx_err_t err_code; |
| uint32_t int_mask = RTC_CHANNEL_INT_MASK(channel); |
| nrf_rtc_event_t event = RTC_CHANNEL_EVENT_ADDR(channel); |
| |
| nrf_rtc_event_disable(p_instance->p_reg, int_mask); |
| nrf_rtc_int_disable(p_instance->p_reg, int_mask); |
| |
| val = RTC_WRAP(val); |
| if (m_cb[p_instance->instance_id].reliable) |
| { |
| nrf_rtc_cc_set(p_instance->p_reg,channel,val); |
| uint32_t cnt = nrf_rtc_counter_get(p_instance->p_reg); |
| int32_t diff = cnt - val; |
| if (cnt < val) |
| { |
| diff += RTC_COUNTER_COUNTER_Msk; |
| } |
| if (diff < m_cb[p_instance->instance_id].tick_latency) |
| { |
| err_code = NRFX_ERROR_TIMEOUT; |
| NRFX_LOG_WARNING("Function: %s, error code: %s.", |
| __func__, |
| NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| } |
| else |
| { |
| nrf_rtc_cc_set(p_instance->p_reg,channel,val); |
| } |
| |
| if (enable_irq) |
| { |
| nrf_rtc_event_clear(p_instance->p_reg,event); |
| nrf_rtc_int_enable(p_instance->p_reg, int_mask); |
| } |
| nrf_rtc_event_enable(p_instance->p_reg,int_mask); |
| |
| NRFX_LOG_INFO("RTC id: %d, channel enabled: %lu, compare value: %lu.", |
| p_instance->instance_id, |
| channel, |
| val); |
| err_code = NRFX_SUCCESS; |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| void nrfx_rtc_tick_enable(nrfx_rtc_t const * const p_instance, bool enable_irq) |
| { |
| nrf_rtc_event_t event = NRF_RTC_EVENT_TICK; |
| uint32_t mask = NRF_RTC_INT_TICK_MASK; |
| |
| nrf_rtc_event_clear(p_instance->p_reg, event); |
| nrf_rtc_event_enable(p_instance->p_reg, mask); |
| if (enable_irq) |
| { |
| nrf_rtc_int_enable(p_instance->p_reg, mask); |
| } |
| NRFX_LOG_INFO("Tick events enabled."); |
| } |
| |
| void nrfx_rtc_tick_disable(nrfx_rtc_t const * const p_instance) |
| { |
| uint32_t mask = NRF_RTC_INT_TICK_MASK; |
| |
| nrf_rtc_event_disable(p_instance->p_reg, mask); |
| nrf_rtc_int_disable(p_instance->p_reg, mask); |
| NRFX_LOG_INFO("Tick events disabled."); |
| } |
| |
| void nrfx_rtc_overflow_enable(nrfx_rtc_t const * const p_instance, bool enable_irq) |
| { |
| nrf_rtc_event_t event = NRF_RTC_EVENT_OVERFLOW; |
| uint32_t mask = NRF_RTC_INT_OVERFLOW_MASK; |
| |
| nrf_rtc_event_clear(p_instance->p_reg, event); |
| nrf_rtc_event_enable(p_instance->p_reg, mask); |
| if (enable_irq) |
| { |
| nrf_rtc_int_enable(p_instance->p_reg, mask); |
| } |
| } |
| |
| void nrfx_rtc_overflow_disable(nrfx_rtc_t const * const p_instance) |
| { |
| uint32_t mask = NRF_RTC_INT_OVERFLOW_MASK; |
| nrf_rtc_event_disable(p_instance->p_reg, mask); |
| nrf_rtc_int_disable(p_instance->p_reg, mask); |
| } |
| |
| uint32_t nrfx_rtc_max_ticks_get(nrfx_rtc_t const * const p_instance) |
| { |
| uint32_t ticks; |
| if (m_cb[p_instance->instance_id].reliable) |
| { |
| ticks = RTC_COUNTER_COUNTER_Msk - m_cb[p_instance->instance_id].tick_latency; |
| } |
| else |
| { |
| ticks = RTC_COUNTER_COUNTER_Msk; |
| } |
| return ticks; |
| } |
| |
| static void irq_handler(NRF_RTC_Type * p_reg, |
| uint32_t instance_id, |
| uint32_t channel_count) |
| { |
| uint32_t i; |
| uint32_t int_mask = (uint32_t)NRF_RTC_INT_COMPARE0_MASK; |
| nrf_rtc_event_t event = NRF_RTC_EVENT_COMPARE_0; |
| |
| for (i = 0; i < channel_count; i++) |
| { |
| if (nrf_rtc_int_is_enabled(p_reg,int_mask) && nrf_rtc_event_pending(p_reg,event)) |
| { |
| nrf_rtc_event_disable(p_reg,int_mask); |
| nrf_rtc_int_disable(p_reg,int_mask); |
| nrf_rtc_event_clear(p_reg,event); |
| NRFX_LOG_DEBUG("Event: %s, instance id: %lu.", EVT_TO_STR(event), instance_id); |
| m_handlers[instance_id]((nrfx_rtc_int_type_t)i); |
| } |
| int_mask <<= 1; |
| event = (nrf_rtc_event_t)((uint32_t)event + sizeof(uint32_t)); |
| } |
| event = NRF_RTC_EVENT_TICK; |
| if (nrf_rtc_int_is_enabled(p_reg,NRF_RTC_INT_TICK_MASK) && |
| nrf_rtc_event_pending(p_reg, event)) |
| { |
| nrf_rtc_event_clear(p_reg, event); |
| NRFX_LOG_DEBUG("Event: %s, instance id: %lu.", EVT_TO_STR(event), instance_id); |
| m_handlers[instance_id](NRFX_RTC_INT_TICK); |
| } |
| |
| event = NRF_RTC_EVENT_OVERFLOW; |
| if (nrf_rtc_int_is_enabled(p_reg,NRF_RTC_INT_OVERFLOW_MASK) && |
| nrf_rtc_event_pending(p_reg, event)) |
| { |
| nrf_rtc_event_clear(p_reg,event); |
| NRFX_LOG_DEBUG("Event: %s, instance id: %lu.", EVT_TO_STR(event), instance_id); |
| m_handlers[instance_id](NRFX_RTC_INT_OVERFLOW); |
| } |
| } |
| |
| #if NRFX_CHECK(NRFX_RTC0_ENABLED) |
| void nrfx_rtc_0_irq_handler(void) |
| { |
| irq_handler(NRF_RTC0, NRFX_RTC0_INST_IDX, NRF_RTC_CC_CHANNEL_COUNT(0)); |
| } |
| #endif |
| |
| #if NRFX_CHECK(NRFX_RTC1_ENABLED) |
| void nrfx_rtc_1_irq_handler(void) |
| { |
| irq_handler(NRF_RTC1, NRFX_RTC1_INST_IDX, NRF_RTC_CC_CHANNEL_COUNT(1)); |
| } |
| #endif |
| |
| #if NRFX_CHECK(NRFX_RTC2_ENABLED) |
| void nrfx_rtc_2_irq_handler(void) |
| { |
| irq_handler(NRF_RTC2, NRFX_RTC2_INST_IDX, NRF_RTC_CC_CHANNEL_COUNT(2)); |
| } |
| #endif |
| |
| #endif // NRFX_CHECK(NRFX_RTC_ENABLED) |