diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_lpcomp.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_lpcomp.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_lpcomp.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_lpcomp.c new file mode 100644 index 0000000..024eda6 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_lpcomp.c @@ -0,0 +1,174 @@ +/** + * 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, 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_LPCOMP_ENABLED) + +#include <nrfx_lpcomp.h> +#include "prs/nrfx_prs.h" + +#define NRFX_LOG_MODULE LPCOMP +#include <nrfx_log.h> + +#define EVT_TO_STR(event) \ + (event == NRF_LPCOMP_EVENT_READY ? "NRF_LPCOMP_EVENT_READY" : \ + (event == NRF_LPCOMP_EVENT_DOWN ? "NRF_LPCOMP_EVENT_DOWN" : \ + (event == NRF_LPCOMP_EVENT_UP ? "NRF_LPCOMP_EVENT_UP" : \ + (event == NRF_LPCOMP_EVENT_CROSS ? "NRF_LPCOMP_EVENT_CROSS" : \ + "UNKNOWN EVENT")))) + + +static nrfx_lpcomp_event_handler_t m_lpcomp_event_handler = NULL; +static nrfx_drv_state_t m_state = NRFX_DRV_STATE_UNINITIALIZED; + +static void lpcomp_execute_handler(nrf_lpcomp_event_t event, uint32_t event_mask) +{ + if (nrf_lpcomp_event_check(event) && nrf_lpcomp_int_enable_check(event_mask)) + { + nrf_lpcomp_event_clear(event); + NRFX_LOG_DEBUG("Event: %s.", EVT_TO_STR(event)); + + m_lpcomp_event_handler(event); + } +} + +void nrfx_lpcomp_irq_handler(void) +{ + lpcomp_execute_handler(NRF_LPCOMP_EVENT_READY, LPCOMP_INTENSET_READY_Msk); + lpcomp_execute_handler(NRF_LPCOMP_EVENT_DOWN, LPCOMP_INTENSET_DOWN_Msk); + lpcomp_execute_handler(NRF_LPCOMP_EVENT_UP, LPCOMP_INTENSET_UP_Msk); + lpcomp_execute_handler(NRF_LPCOMP_EVENT_CROSS, LPCOMP_INTENSET_CROSS_Msk); +} + +nrfx_err_t nrfx_lpcomp_init(nrfx_lpcomp_config_t const * p_config, + nrfx_lpcomp_event_handler_t event_handler) +{ + NRFX_ASSERT(p_config); + NRFX_ASSERT(event_handler); + nrfx_err_t err_code; + + if (m_state != NRFX_DRV_STATE_UNINITIALIZED) + { // LPCOMP driver is already initialized + 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; + } + + m_lpcomp_event_handler = event_handler; + +#if NRFX_CHECK(NRFX_PRS_ENABLED) + if (nrfx_prs_acquire(NRF_LPCOMP, nrfx_lpcomp_irq_handler) != NRFX_SUCCESS) + { + err_code = NRFX_ERROR_BUSY; + NRFX_LOG_WARNING("Function: %s, error code: %s.", + __func__, + NRFX_LOG_ERROR_STRING_GET(err_code)); + return err_code; + } +#endif + + nrf_lpcomp_configure(&(p_config->hal)); + + nrf_lpcomp_input_select(p_config->input); + + switch (p_config->hal.detection) + { + case NRF_LPCOMP_DETECT_UP: + nrf_lpcomp_int_enable(LPCOMP_INTENSET_UP_Msk); + break; + + case NRF_LPCOMP_DETECT_DOWN: + nrf_lpcomp_int_enable(LPCOMP_INTENSET_DOWN_Msk); + break; + + case NRF_LPCOMP_DETECT_CROSS: + nrf_lpcomp_int_enable(LPCOMP_INTENSET_CROSS_Msk); + break; + + default: + break; + } + nrf_lpcomp_shorts_enable(NRF_LPCOMP_SHORT_READY_SAMPLE_MASK); + + NRFX_IRQ_PRIORITY_SET(LPCOMP_IRQn, p_config->interrupt_priority); + NRFX_IRQ_ENABLE(LPCOMP_IRQn); + + m_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_lpcomp_uninit(void) +{ + NRFX_ASSERT(m_state != NRFX_DRV_STATE_UNINITIALIZED); + NRFX_IRQ_DISABLE(LPCOMP_IRQn); + nrfx_lpcomp_disable(); +#if NRFX_CHECK(NRFX_PRS_ENABLED) + nrfx_prs_release(NRF_LPCOMP); +#endif + m_state = NRFX_DRV_STATE_UNINITIALIZED; + m_lpcomp_event_handler = NULL; + NRFX_LOG_INFO("Uninitialized."); +} + +void nrfx_lpcomp_enable(void) +{ + NRFX_ASSERT(m_state == NRFX_DRV_STATE_INITIALIZED); + nrf_lpcomp_enable(); + nrf_lpcomp_task_trigger(NRF_LPCOMP_TASK_START); + m_state = NRFX_DRV_STATE_POWERED_ON; + NRFX_LOG_INFO("Enabled."); +} + +void nrfx_lpcomp_disable(void) +{ + NRFX_ASSERT(m_state == NRFX_DRV_STATE_POWERED_ON); + nrf_lpcomp_disable(); + nrf_lpcomp_task_trigger(NRF_LPCOMP_TASK_STOP); + m_state = NRFX_DRV_STATE_INITIALIZED; + NRFX_LOG_INFO("Disabled."); +} + +#endif // NRFX_CHECK(NRFX_LPCOMP_ENABLED) |