diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/simple_timer/app_simple_timer.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/simple_timer/app_simple_timer.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/simple_timer/app_simple_timer.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/simple_timer/app_simple_timer.c new file mode 100644 index 0000000..f353f06 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/simple_timer/app_simple_timer.c @@ -0,0 +1,191 @@ +/** + * 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 "sdk_common.h" +#if NRF_MODULE_ENABLED(SIMPLE_TIMER) +#include "app_simple_timer.h" +#include "nrf.h" +#include "app_util_platform.h" +#include "app_error.h" +#include "nrf_timer.h" +#include "nrf_drv_timer.h" + +/**@brief States of simple timer state machine. + */ +typedef enum +{ + SIMPLE_TIMER_STATE_IDLE = 0, + SIMPLE_TIMER_STATE_INITIALIZED, + SIMPLE_TIMER_STATE_STOPPED, + SIMPLE_TIMER_STATE_STARTED +}simple_timer_states_t; + +static app_simple_timer_mode_t m_mode; /**< Registered timer mode. */ +static app_simple_timer_timeout_handler_t m_timeout_handler = NULL; /**< Registered time-out handler. */ +static void * mp_timeout_handler_context = NULL; /**< Registered time-out handler context. */ +static simple_timer_states_t m_simple_timer_state = SIMPLE_TIMER_STATE_IDLE; /**< State machine state. */ + +const nrf_drv_timer_t SIMPLE_TIMER = NRF_DRV_TIMER_INSTANCE(SIMPLE_TIMER_CONFIG_INSTANCE); + +/** + * @brief Handler for timer events. + */ +static void app_simple_timer_event_handler(nrf_timer_event_t event_type, void * p_context) +{ + switch (event_type) + { + case NRF_TIMER_EVENT_COMPARE0: + if (m_mode == APP_SIMPLE_TIMER_MODE_SINGLE_SHOT) + { + m_simple_timer_state = SIMPLE_TIMER_STATE_STOPPED; + } + + //@note: No NULL check required as performed in timer_start(...). + m_timeout_handler(mp_timeout_handler_context); + break; + + default: + //Do nothing. + break; + } +} + +uint32_t app_simple_timer_init(void) +{ + uint32_t err_code = NRF_SUCCESS; + nrf_drv_timer_config_t t_cfg = NRF_DRV_TIMER_DEFAULT_CONFIG; + t_cfg.mode = NRF_TIMER_MODE_TIMER; + t_cfg.bit_width = NRF_TIMER_BIT_WIDTH_16; + t_cfg.frequency = (nrf_timer_frequency_t)SIMPLE_TIMER_CONFIG_FREQUENCY; + err_code = nrf_drv_timer_init(&SIMPLE_TIMER, &t_cfg, app_simple_timer_event_handler); + + if (NRF_SUCCESS == err_code) + { + m_simple_timer_state = SIMPLE_TIMER_STATE_INITIALIZED; + } + + return err_code; +} + +uint32_t app_simple_timer_start(app_simple_timer_mode_t mode, + app_simple_timer_timeout_handler_t timeout_handler, + uint16_t timeout_ticks, + void * p_context) +{ + uint32_t err_code = NRF_SUCCESS; + nrf_timer_short_mask_t timer_short; + + VERIFY_PARAM_NOT_NULL(timeout_handler); + + if (APP_SIMPLE_TIMER_MODE_REPEATED == mode) + { + timer_short = NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK; + } + else if (APP_SIMPLE_TIMER_MODE_SINGLE_SHOT == mode) + { + timer_short = NRF_TIMER_SHORT_COMPARE0_STOP_MASK; + } + else + { + return NRF_ERROR_INVALID_PARAM; + } + + if (SIMPLE_TIMER_STATE_IDLE == m_simple_timer_state) + { + return NRF_ERROR_INVALID_STATE; + } + + if (SIMPLE_TIMER_STATE_STARTED == m_simple_timer_state) + { + err_code = app_simple_timer_stop(); + APP_ERROR_CHECK(err_code); + } + + if (SIMPLE_TIMER_STATE_STOPPED == m_simple_timer_state) + { + nrf_drv_timer_clear(&SIMPLE_TIMER); + } + + m_mode = mode; + m_timeout_handler = timeout_handler; + mp_timeout_handler_context = p_context; + + nrf_drv_timer_extended_compare( + &SIMPLE_TIMER, NRF_TIMER_CC_CHANNEL0, (uint32_t)timeout_ticks, timer_short, true); + + if (m_simple_timer_state == SIMPLE_TIMER_STATE_STOPPED) + { + nrf_drv_timer_resume(&SIMPLE_TIMER); + } + else + { + nrf_drv_timer_enable(&SIMPLE_TIMER); + } + + + m_simple_timer_state = SIMPLE_TIMER_STATE_STARTED; + + return NRF_SUCCESS; +} + +uint32_t app_simple_timer_stop(void) +{ + if (SIMPLE_TIMER_STATE_STARTED == m_simple_timer_state) + { + nrf_drv_timer_pause(&SIMPLE_TIMER); + + m_simple_timer_state = SIMPLE_TIMER_STATE_STOPPED; + } + + return NRF_SUCCESS; +} + +uint32_t app_simple_timer_uninit(void) +{ + uint32_t err_code = NRF_SUCCESS; + + if (SIMPLE_TIMER_STATE_IDLE != m_simple_timer_state) + { + nrf_drv_timer_uninit(&SIMPLE_TIMER); + m_simple_timer_state = SIMPLE_TIMER_STATE_IDLE; + } + + return err_code; +} +#endif //NRF_MODULE_ENABLED(SIMPLE_TIMER) |