From 3061ecca3d0fdfb87dabbf5f63c9e06c2a30f53a Mon Sep 17 00:00:00 2001 From: Trygve Laugstøl Date: Thu, 23 Aug 2018 17:08:59 +0200 Subject: o Initial import. --- .../examples/peripheral/saadc/main.c | 196 +++++++++++++++++++++ 1 file changed, 196 insertions(+) create mode 100644 thirdparty/nRF5_SDK_15.0.0_a53641a/examples/peripheral/saadc/main.c (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/examples/peripheral/saadc/main.c') diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/examples/peripheral/saadc/main.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/examples/peripheral/saadc/main.c new file mode 100644 index 0000000..e92b693 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/examples/peripheral/saadc/main.c @@ -0,0 +1,196 @@ +/** + * 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. + * + */ +/** @file + * @defgroup nrf_adc_example main.c + * @{ + * @ingroup nrf_adc_example + * @brief ADC Example Application main file. + * + * This file contains the source code for a sample application using ADC. + * + * @image html example_board_setup_a.jpg "Use board setup A for this example." + */ + +#include +#include +#include +#include +#include "nrf.h" +#include "nrf_drv_saadc.h" +#include "nrf_drv_ppi.h" +#include "nrf_drv_timer.h" +#include "boards.h" +#include "app_error.h" +#include "nrf_delay.h" +#include "app_util_platform.h" +#include "nrf_pwr_mgmt.h" + +#include "nrf_log.h" +#include "nrf_log_ctrl.h" +#include "nrf_log_default_backends.h" + +#define SAMPLES_IN_BUFFER 5 +volatile uint8_t state = 1; + +static const nrf_drv_timer_t m_timer = NRF_DRV_TIMER_INSTANCE(0); +static nrf_saadc_value_t m_buffer_pool[2][SAMPLES_IN_BUFFER]; +static nrf_ppi_channel_t m_ppi_channel; +static uint32_t m_adc_evt_counter; + + +void timer_handler(nrf_timer_event_t event_type, void * p_context) +{ + +} + + +void saadc_sampling_event_init(void) +{ + ret_code_t err_code; + + err_code = nrf_drv_ppi_init(); + APP_ERROR_CHECK(err_code); + + nrf_drv_timer_config_t timer_cfg = NRF_DRV_TIMER_DEFAULT_CONFIG; + timer_cfg.bit_width = NRF_TIMER_BIT_WIDTH_32; + err_code = nrf_drv_timer_init(&m_timer, &timer_cfg, timer_handler); + APP_ERROR_CHECK(err_code); + + /* setup m_timer for compare event every 400ms */ + uint32_t ticks = nrf_drv_timer_ms_to_ticks(&m_timer, 400); + nrf_drv_timer_extended_compare(&m_timer, + NRF_TIMER_CC_CHANNEL0, + ticks, + NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK, + false); + nrf_drv_timer_enable(&m_timer); + + uint32_t timer_compare_event_addr = nrf_drv_timer_compare_event_address_get(&m_timer, + NRF_TIMER_CC_CHANNEL0); + uint32_t saadc_sample_task_addr = nrf_drv_saadc_sample_task_get(); + + /* setup ppi channel so that timer compare event is triggering sample task in SAADC */ + err_code = nrf_drv_ppi_channel_alloc(&m_ppi_channel); + APP_ERROR_CHECK(err_code); + + err_code = nrf_drv_ppi_channel_assign(m_ppi_channel, + timer_compare_event_addr, + saadc_sample_task_addr); + APP_ERROR_CHECK(err_code); +} + + +void saadc_sampling_event_enable(void) +{ + ret_code_t err_code = nrf_drv_ppi_channel_enable(m_ppi_channel); + + APP_ERROR_CHECK(err_code); +} + + +void saadc_callback(nrf_drv_saadc_evt_t const * p_event) +{ + if (p_event->type == NRF_DRV_SAADC_EVT_DONE) + { + ret_code_t err_code; + + err_code = nrf_drv_saadc_buffer_convert(p_event->data.done.p_buffer, SAMPLES_IN_BUFFER); + APP_ERROR_CHECK(err_code); + + int i; + NRF_LOG_INFO("ADC event number: %d", (int)m_adc_evt_counter); + + for (i = 0; i < SAMPLES_IN_BUFFER; i++) + { + NRF_LOG_INFO("%d", p_event->data.done.p_buffer[i]); + } + m_adc_evt_counter++; + } +} + + +void saadc_init(void) +{ + ret_code_t err_code; + nrf_saadc_channel_config_t channel_config = + NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(NRF_SAADC_INPUT_AIN0); + + err_code = nrf_drv_saadc_init(NULL, saadc_callback); + APP_ERROR_CHECK(err_code); + + err_code = nrf_drv_saadc_channel_init(0, &channel_config); + APP_ERROR_CHECK(err_code); + + err_code = nrf_drv_saadc_buffer_convert(m_buffer_pool[0], SAMPLES_IN_BUFFER); + APP_ERROR_CHECK(err_code); + + err_code = nrf_drv_saadc_buffer_convert(m_buffer_pool[1], SAMPLES_IN_BUFFER); + APP_ERROR_CHECK(err_code); + +} + + +/** + * @brief Function for main application entry. + */ +int main(void) +{ + uint32_t err_code = NRF_LOG_INIT(NULL); + APP_ERROR_CHECK(err_code); + + NRF_LOG_DEFAULT_BACKENDS_INIT(); + + ret_code_t ret_code = nrf_pwr_mgmt_init(); + APP_ERROR_CHECK(ret_code); + + saadc_init(); + saadc_sampling_event_init(); + saadc_sampling_event_enable(); + NRF_LOG_INFO("SAADC HAL simple example started."); + + while (1) + { + nrf_pwr_mgmt_run(); + NRF_LOG_FLUSH(); + } +} + + +/** @} */ -- cgit v1.2.3