/* * 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 #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 ." #endif #include #define NRFX_LOG_MODULE TIMER #include /**@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)