diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_rtc.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_rtc.c | 348 |
1 files changed, 348 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_rtc.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_rtc.c new file mode 100644 index 0000000..95e8605 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_rtc.c @@ -0,0 +1,348 @@ +/** + * 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, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, 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 Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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) |