| /** |
| * Copyright (c) 2015 - 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_TIMER_ENABLED) |
| |
| #if !(NRFX_CHECK(NRFX_TIMER0_ENABLED) || NRFX_CHECK(NRFX_TIMER1_ENABLED) || \ |
| NRFX_CHECK(NRFX_TIMER2_ENABLED) || NRFX_CHECK(NRFX_TIMER3_ENABLED) || \ |
| NRFX_CHECK(NRFX_TIMER4_ENABLED)) |
| #error "No enabled TIMER instances. Check <nrfx_config.h>." |
| #endif |
| |
| #include <nrfx_timer.h> |
| |
| #define NRFX_LOG_MODULE TIMER |
| #include <nrfx_log.h> |
| |
| /**@brief Timer control block. */ |
| typedef struct |
| { |
| nrfx_timer_event_handler_t handler; |
| void * context; |
| nrfx_drv_state_t state; |
| } timer_control_block_t; |
| |
| static timer_control_block_t m_cb[NRFX_TIMER_ENABLED_COUNT]; |
| |
| nrfx_err_t nrfx_timer_init(nrfx_timer_t const * const p_instance, |
| nrfx_timer_config_t const * p_config, |
| nrfx_timer_event_handler_t timer_event_handler) |
| { |
| timer_control_block_t * p_cb = &m_cb[p_instance->instance_id]; |
| #ifdef SOFTDEVICE_PRESENT |
| NRFX_ASSERT(p_instance->p_reg != NRF_TIMER0); |
| #endif |
| NRFX_ASSERT(p_config); |
| NRFX_ASSERT(timer_event_handler); |
| |
| nrfx_err_t err_code; |
| |
| if (p_cb->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; |
| } |
| |
| /* Warning 685: Relational operator '<=' always evaluates to 'true'" |
| * Warning in NRF_TIMER_IS_BIT_WIDTH_VALID macro. Macro validate timers resolution. |
| * Not necessary in nRF52 based systems. Obligatory in nRF51 based systems. |
| */ |
| |
| /*lint -save -e685 */ |
| |
| NRFX_ASSERT(NRF_TIMER_IS_BIT_WIDTH_VALID(p_instance->p_reg, p_config->bit_width)); |
| |
| //lint -restore |
| |
| p_cb->handler = timer_event_handler; |
| p_cb->context = p_config->p_context; |
| |
| uint8_t i; |
| for (i = 0; i < p_instance->cc_channel_count; ++i) |
| { |
| nrf_timer_event_clear(p_instance->p_reg, |
| nrf_timer_compare_event_get(i)); |
| } |
| |
| NRFX_IRQ_PRIORITY_SET(nrfx_get_irq_number(p_instance->p_reg), |
| p_config->interrupt_priority); |
| NRFX_IRQ_ENABLE(nrfx_get_irq_number(p_instance->p_reg)); |
| |
| nrf_timer_mode_set(p_instance->p_reg, p_config->mode); |
| nrf_timer_bit_width_set(p_instance->p_reg, p_config->bit_width); |
| nrf_timer_frequency_set(p_instance->p_reg, p_config->frequency); |
| |
| p_cb->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_timer_uninit(nrfx_timer_t const * const p_instance) |
| { |
| NRFX_IRQ_DISABLE(nrfx_get_irq_number(p_instance->p_reg)); |
| |
| #define DISABLE_ALL UINT32_MAX |
| nrf_timer_shorts_disable(p_instance->p_reg, DISABLE_ALL); |
| nrf_timer_int_disable(p_instance->p_reg, DISABLE_ALL); |
| #undef DISABLE_ALL |
| |
| nrfx_timer_disable(p_instance); |
| |
| m_cb[p_instance->instance_id].state = NRFX_DRV_STATE_UNINITIALIZED; |
| NRFX_LOG_INFO("Uninitialized instance: %d.", p_instance->instance_id); |
| } |
| |
| void nrfx_timer_enable(nrfx_timer_t const * const p_instance) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state == NRFX_DRV_STATE_INITIALIZED); |
| nrf_timer_task_trigger(p_instance->p_reg, NRF_TIMER_TASK_START); |
| m_cb[p_instance->instance_id].state = NRFX_DRV_STATE_POWERED_ON; |
| NRFX_LOG_INFO("Enabled instance: %d.", p_instance->instance_id); |
| } |
| |
| void nrfx_timer_disable(nrfx_timer_t const * const p_instance) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED); |
| nrf_timer_task_trigger(p_instance->p_reg, NRF_TIMER_TASK_SHUTDOWN); |
| m_cb[p_instance->instance_id].state = NRFX_DRV_STATE_INITIALIZED; |
| NRFX_LOG_INFO("Disabled instance: %d.", p_instance->instance_id); |
| } |
| |
| bool nrfx_timer_is_enabled(nrfx_timer_t const * const p_instance) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED); |
| return (m_cb[p_instance->instance_id].state == NRFX_DRV_STATE_POWERED_ON); |
| } |
| |
| void nrfx_timer_resume(nrfx_timer_t const * const p_instance) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED); |
| nrf_timer_task_trigger(p_instance->p_reg, NRF_TIMER_TASK_START); |
| NRFX_LOG_INFO("Resumed instance: %d.", p_instance->instance_id); |
| } |
| |
| void nrfx_timer_pause(nrfx_timer_t const * const p_instance) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED); |
| nrf_timer_task_trigger(p_instance->p_reg, NRF_TIMER_TASK_STOP); |
| NRFX_LOG_INFO("Paused instance: %d.", p_instance->instance_id); |
| } |
| |
| void nrfx_timer_clear(nrfx_timer_t const * const p_instance) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED); |
| nrf_timer_task_trigger(p_instance->p_reg, NRF_TIMER_TASK_CLEAR); |
| } |
| |
| void nrfx_timer_increment(nrfx_timer_t const * const p_instance) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED); |
| NRFX_ASSERT(nrf_timer_mode_get(p_instance->p_reg) != NRF_TIMER_MODE_TIMER); |
| |
| nrf_timer_task_trigger(p_instance->p_reg, NRF_TIMER_TASK_COUNT); |
| } |
| |
| uint32_t nrfx_timer_capture(nrfx_timer_t const * const p_instance, |
| nrf_timer_cc_channel_t cc_channel) |
| { |
| NRFX_ASSERT(m_cb[p_instance->instance_id].state != NRFX_DRV_STATE_UNINITIALIZED); |
| NRFX_ASSERT(cc_channel < p_instance->cc_channel_count); |
| |
| nrf_timer_task_trigger(p_instance->p_reg, |
| nrf_timer_capture_task_get(cc_channel)); |
| return nrf_timer_cc_read(p_instance->p_reg, cc_channel); |
| } |
| |
| void nrfx_timer_compare(nrfx_timer_t const * const p_instance, |
| nrf_timer_cc_channel_t cc_channel, |
| uint32_t cc_value, |
| bool enable_int) |
| { |
| nrf_timer_int_mask_t timer_int = nrf_timer_compare_int_get(cc_channel); |
| |
| if (enable_int) |
| { |
| nrf_timer_event_clear(p_instance->p_reg, nrf_timer_compare_event_get(cc_channel)); |
| nrf_timer_int_enable(p_instance->p_reg, timer_int); |
| } |
| else |
| { |
| nrf_timer_int_disable(p_instance->p_reg, timer_int); |
| } |
| |
| nrf_timer_cc_write(p_instance->p_reg, cc_channel, cc_value); |
| NRFX_LOG_INFO("Timer id: %d, capture value set: %lu, channel: %d.", |
| p_instance->instance_id, |
| cc_value, |
| cc_channel); |
| } |
| |
| void nrfx_timer_extended_compare(nrfx_timer_t const * const p_instance, |
| nrf_timer_cc_channel_t cc_channel, |
| uint32_t cc_value, |
| nrf_timer_short_mask_t timer_short_mask, |
| bool enable_int) |
| { |
| nrf_timer_shorts_disable(p_instance->p_reg, |
| (TIMER_SHORTS_COMPARE0_STOP_Msk << cc_channel) | |
| (TIMER_SHORTS_COMPARE0_CLEAR_Msk << cc_channel)); |
| |
| nrf_timer_shorts_enable(p_instance->p_reg, timer_short_mask); |
| |
| nrfx_timer_compare(p_instance, |
| cc_channel, |
| cc_value, |
| enable_int); |
| NRFX_LOG_INFO("Timer id: %d, capture value set: %lu, channel: %d.", |
| p_instance->instance_id, |
| cc_value, |
| cc_channel); |
| } |
| |
| void nrfx_timer_compare_int_enable(nrfx_timer_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); |
| |
| nrf_timer_event_clear(p_instance->p_reg, |
| nrf_timer_compare_event_get(channel)); |
| nrf_timer_int_enable(p_instance->p_reg, |
| nrf_timer_compare_int_get(channel)); |
| } |
| |
| void nrfx_timer_compare_int_disable(nrfx_timer_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); |
| |
| nrf_timer_int_disable(p_instance->p_reg, |
| nrf_timer_compare_int_get(channel)); |
| } |
| |
| static void irq_handler(NRF_TIMER_Type * p_reg, |
| timer_control_block_t * p_cb, |
| uint8_t channel_count) |
| { |
| uint8_t i; |
| for (i = 0; i < channel_count; ++i) |
| { |
| nrf_timer_event_t event = nrf_timer_compare_event_get(i); |
| nrf_timer_int_mask_t int_mask = nrf_timer_compare_int_get(i); |
| |
| if (nrf_timer_event_check(p_reg, event) && |
| nrf_timer_int_enable_check(p_reg, int_mask)) |
| { |
| nrf_timer_event_clear(p_reg, event); |
| NRFX_LOG_DEBUG("Compare event, channel: %d.", i); |
| p_cb->handler(event, p_cb->context); |
| } |
| } |
| } |
| |
| #if NRFX_CHECK(NRFX_TIMER0_ENABLED) |
| void nrfx_timer_0_irq_handler(void) |
| { |
| irq_handler(NRF_TIMER0, &m_cb[NRFX_TIMER0_INST_IDX], |
| NRF_TIMER_CC_CHANNEL_COUNT(0)); |
| } |
| #endif |
| |
| #if NRFX_CHECK(NRFX_TIMER1_ENABLED) |
| void nrfx_timer_1_irq_handler(void) |
| { |
| irq_handler(NRF_TIMER1, &m_cb[NRFX_TIMER1_INST_IDX], |
| NRF_TIMER_CC_CHANNEL_COUNT(1)); |
| } |
| #endif |
| |
| #if NRFX_CHECK(NRFX_TIMER2_ENABLED) |
| void nrfx_timer_2_irq_handler(void) |
| { |
| irq_handler(NRF_TIMER2, &m_cb[NRFX_TIMER2_INST_IDX], |
| NRF_TIMER_CC_CHANNEL_COUNT(2)); |
| } |
| #endif |
| |
| #if NRFX_CHECK(NRFX_TIMER3_ENABLED) |
| void nrfx_timer_3_irq_handler(void) |
| { |
| irq_handler(NRF_TIMER3, &m_cb[NRFX_TIMER3_INST_IDX], |
| NRF_TIMER_CC_CHANNEL_COUNT(3)); |
| } |
| #endif |
| |
| #if NRFX_CHECK(NRFX_TIMER4_ENABLED) |
| void nrfx_timer_4_irq_handler(void) |
| { |
| irq_handler(NRF_TIMER4, &m_cb[NRFX_TIMER4_INST_IDX], |
| NRF_TIMER_CC_CHANNEL_COUNT(4)); |
| } |
| #endif |
| |
| #endif // NRFX_CHECK(NRFX_TIMER_ENABLED) |
