Dear Nordic Support,
I follow this SAADC example to calibrate the SAADC every SAADC_CALIBRATION_INTERVAL.
However, whenever the function nrfx_saadc_abort() is called, it always asserts at these lines of code:
// Wait for ADC being stopped. bool result; NRFX_WAIT_FOR((m_cb.adc_state == NRF_SAADC_STATE_IDLE), HW_TIMEOUT, 0, result); NRFX_ASSERT(result);
I tried debugging and I found that the m_cb.adc_state only in NRF_SAADC_STATE_IDLE after the initialization and then it is always busy.
I have 2 SAADC channels they are working with the PPI and TIMER. Every 10ms, the TIMER triggers the SAADC event. I am using nRF5_SDK_15.3.0_59ac345 with my nRF52840-DK.
For more details, I attached my code in following file: main.c, peripherals.h and peripherals.c.
<error> app: ERROR 3735928559 [Unknown error code] at D:\Projects\torquevault_torquedevicesfw\torque_wrench\nRF5_SDK_15.3.0_59ac345\modules\nrfx\drivers\src\nrfx_saadc.c:594 PC at: 0x0002647F <error> app: End of error report
Thank you and best regards,
Duy
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You need to analyze * how your product is supposed to react in case of Assert. * @warning On assert from the SoftDevice, the system can only recover on reset. * * @param[in] line_num Line number of the failing ASSERT call. * @param[in] file_name File name of the failing ASSERT call. */ void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name) { app_error_handler(DEAD_BEEF, line_num, p_file_name); } /**@brief Function for handling Peer Manager events. * * @param[in] p_evt Peer Manager event. */ static void pm_evt_handler(pm_evt_t const * p_evt) { bool is_indication_enabled; pm_handler_on_pm_evt(p_evt); pm_handler_flash_clean(p_evt); switch (p_evt->evt_id) { case PM_EVT_CONN_SEC_SUCCEEDED: // Send a single temperature measurement if indication is enabled. // NOTE: For this to work, make sure ble_hts_on_ble_evt() is called before // pm_evt_handler() in ble_evt_dispatch(). APP_ERROR_CHECK(ble_hts_is_indication_enabled(&m_hts, &is_indication_enabled)); if (is_indication_enabled) { temperature_measurement_send(); } break; case PM_EVT_PEERS_DELETE_SUCCEEDED: advertising_start(false); break; default: break; } } /**@brief Function for performing a battery measurement, and update the Battery Level characteristic in the Battery Service. */ static void battery_level_update(void) { ret_code_t err_code; uint8_t battery_level; battery_level = (uint8_t)sensorsim_measure(&m_battery_sim_state, &m_battery_sim_cfg); err_code = ble_bas_battery_level_update(&m_bas, battery_level, BLE_CONN_HANDLE_ALL); if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_RESOURCES) && (err_code != NRF_ERROR_BUSY) && (err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING) ) { APP_ERROR_HANDLER(err_code); } } /**@brief Function for handling the Battery measurement timer timeout. * * @details This function will be called each time the battery level measurement timer expires. * * @param[in] p_context Pointer used for passing some arbitrary information (context) from the * app_start_timer() call to the timeout handler. */ uint16_t counter; static void saadc_acquisition_timeout_handler(nrf_timer_event_t event_type, void *p_context) { switch (event_type) { case NRF_TIMER_EVENT_COMPARE0: { counter++; if (m_conn_handle != BLE_CONN_HANDLE_INVALID) { } break; } default: break; } } /**@brief Function for handling the Battery measurement timer timeout. * * @details This function will be called each time the battery level measurement timer expires. * * @param[in] p_context Pointer used for passing some arbitrary information (context) from the * app_start_timer() call to the timeout handler. */ uint16_t counter1; static void battery_level_meas_timeout_handler(nrf_timer_event_t event_type, void *p_context) { switch (event_type) { case NRF_TIMER_EVENT_COMPARE0: { counter1++; if (m_conn_handle != BLE_CONN_HANDLE_INVALID) { temperature_measurement_send(); battery_level_update(); } break; } default: break; } } static void saadc_callback(nrf_drv_saadc_evt_t const *p_event) { uint8_t idx; switch (p_event->type) { case NRF_DRV_SAADC_EVT_DONE: { /* Evaluate if offset calibration should be performed. */ /* Configure the SAADC_CALIBRATION_INTERVAL constant to change the calibration frequency. */ if (0 == (m_saadc_evt_counter % SAADC_CALIBRATION_INTERVAL)) { // if (true == m_device_first_start) // { // m_device_first_start = false; // } // else // { /* Abort all ongoing conversions. Calibration cannot be run if SAADC is busy. */ nrf_drv_saadc_abort(); /* Set flag to trigger calibration in main context when SAADC is stopped. */ m_saadc_calibrate = true; // } } if (false == m_saadc_calibrate) { APP_ERROR_CHECK(nrf_drv_saadc_buffer_convert(p_event->data.done.p_buffer, RAW_ADC_BUFF_SIZE)); NRF_LOG_INFO("ADC channel %d event number: %d",p_event->data.limit.channel, (int)m_saadc_evt_counter); for (idx = 0; idx < RAW_ADC_BUFF_SIZE; idx++) { NRF_LOG_INFO("%d", p_event->data.done.p_buffer[idx]); } } m_saadc_evt_counter++; break; } case NRF_DRV_SAADC_EVT_CALIBRATEDONE: { /* Set buffer so the SAADC can write to it again. Need to setup both buffers, as they were both removed with the call to nrf_drv_saadc_abort before calibration. */ saadc_set_buffer(); break; } default: break; } } /**@brief Function for populating simulated health thermometer measurement. */ static void hts_sim_measurement(ble_hts_meas_t * p_meas) { static ble_date_time_t time_stamp = { 2012, 12, 5, 11, 50, 0 }; uint32_t celciusX100; p_meas->temp_in_fahr_units = false; p_meas->time_stamp_present = true; p_meas->temp_type_present = (TEMP_TYPE_AS_CHARACTERISTIC ? false : true); celciusX100 = sensorsim_measure(&m_temp_celcius_sim_state, &m_temp_celcius_sim_cfg); p_meas->temp_in_celcius.exponent = -2; p_meas->temp_in_celcius.mantissa = celciusX100; p_meas->temp_in_fahr.exponent = -2; p_meas->temp_in_fahr.mantissa = (32 * 100) + ((celciusX100 * 9) / 5); p_meas->time_stamp = time_stamp; p_meas->temp_type = BLE_HTS_TEMP_TYPE_FINGER; // update simulated time stamp time_stamp.seconds += 27; if (time_stamp.seconds > 59) { time_stamp.seconds -= 60; time_stamp.minutes++; if (time_stamp.minutes > 59) { time_stamp.minutes = 0; } } } /**@brief Function for the GAP initialization. * * @details This function sets up all the necessary GAP (Generic Access Profile) parameters of the * device including the device name, appearance, and the preferred connection parameters. */ static void gap_params_init(void) { ble_gap_conn_params_t gap_conn_params; ble_gap_conn_sec_mode_t sec_mode; BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode); APP_ERROR_CHECK(sd_ble_gap_device_name_set(&sec_mode, (const uint8_t *)DEVICE_NAME, strlen(DEVICE_NAME))); APP_ERROR_CHECK(sd_ble_gap_appearance_set(BLE_APPEARANCE_GENERIC_THERMOMETER)); memset(&gap_conn_params, 0, sizeof(gap_conn_params)); gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL; gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL; gap_conn_params.slave_latency = SLAVE_LATENCY; gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT; APP_ERROR_CHECK(sd_ble_gap_ppcp_set(&gap_conn_params)); } /**@brief Function for initializing the GATT module. */ static void gatt_init(void) { APP_ERROR_CHECK(nrf_ble_gatt_init(&m_gatt, NULL)); } /**@brief Function for simulating and sending one Temperature Measurement. */ static void temperature_measurement_send(void) { ble_hts_meas_t simulated_meas; ret_code_t err_code; if (!m_hts_meas_ind_conf_pending) { hts_sim_measurement(&simulated_meas); err_code = ble_hts_measurement_send(&m_hts, &simulated_meas); switch (err_code) { case NRF_SUCCESS: // Measurement was successfully sent, wait for confirmation. m_hts_meas_ind_conf_pending = true; break; case NRF_ERROR_INVALID_STATE: // Ignore error. break; default: APP_ERROR_HANDLER(err_code); break; } } } /**@brief Function for handling the Health Thermometer Service events. * * @details This function will be called for all Health Thermometer Service events which are passed * to the application. * * @param[in] p_hts Health Thermometer Service structure. * @param[in] p_evt Event received from the Health Thermometer Service. */ static void on_hts_evt(ble_hts_t * p_hts, ble_hts_evt_t * p_evt) { switch (p_evt->evt_type) { case BLE_HTS_EVT_INDICATION_ENABLED: // Indication has been enabled, send a single temperature measurement temperature_measurement_send(); break; case BLE_HTS_EVT_INDICATION_CONFIRMED: m_hts_meas_ind_conf_pending = false; break; default: // No implementation needed. break; } } /**@brief Function for handling Queued Write Module errors. * * @details A pointer to this function will be passed to each service which may need to inform the * application about an error. * * @param[in] nrf_error Error code containing information about what went wrong. */ static void nrf_qwr_error_handler(uint32_t nrf_error) { APP_ERROR_HANDLER(nrf_error); } /**@brief Function for initializing services that will be used by the application. * * @details Initialize the Health Thermometer, Battery and Device Information services. */ static void services_init(void) { ret_code_t err_code; ble_hts_init_t hts_init; ble_bas_init_t bas_init; ble_dis_init_t dis_init; nrf_ble_qwr_init_t qwr_init = {0}; ble_dis_sys_id_t sys_id; // Initialize Queued Write Module. qwr_init.error_handler = nrf_qwr_error_handler; APP_ERROR_CHECK(nrf_ble_qwr_init(&m_qwr, &qwr_init)); // Initialize Health Thermometer Service memset(&hts_init, 0, sizeof(hts_init)); hts_init.evt_handler = on_hts_evt; hts_init.temp_type_as_characteristic = TEMP_TYPE_AS_CHARACTERISTIC; hts_init.temp_type = BLE_HTS_TEMP_TYPE_BODY; // Here the sec level for the Health Thermometer Service can be changed/increased. hts_init.ht_meas_cccd_wr_sec = SEC_JUST_WORKS; hts_init.ht_type_rd_sec = SEC_OPEN; APP_ERROR_CHECK(ble_hts_init(&m_hts, &hts_init)); // Initialize Battery Service. memset(&bas_init, 0, sizeof(bas_init)); // Here the sec level for the Battery Service can be changed/increased. bas_init.bl_rd_sec = SEC_OPEN; bas_init.bl_cccd_wr_sec = SEC_OPEN; bas_init.bl_report_rd_sec = SEC_OPEN; bas_init.evt_handler = NULL; bas_init.support_notification = true; bas_init.p_report_ref = NULL; bas_init.initial_batt_level = 100; APP_ERROR_CHECK(ble_bas_init(&m_bas, &bas_init)); // Initialize Device Information Service. memset(&dis_init, 0, sizeof(dis_init)); ble_srv_ascii_to_utf8(&dis_init.manufact_name_str, MANUFACTURER_NAME); ble_srv_ascii_to_utf8(&dis_init.model_num_str, MODEL_NUM); sys_id.manufacturer_id = MANUFACTURER_ID; sys_id.organizationally_unique_id = ORG_UNIQUE_ID; dis_init.p_sys_id = &sys_id; dis_init.dis_char_rd_sec = SEC_OPEN; APP_ERROR_CHECK(ble_dis_init(&dis_init)); } /**@brief Function for initializing the sensor simulators. */ static void sensor_simulator_init(void) { m_battery_sim_cfg.min = MIN_BATTERY_LEVEL; m_battery_sim_cfg.max = MAX_BATTERY_LEVEL; m_battery_sim_cfg.incr = BATTERY_LEVEL_INCREMENT; m_battery_sim_cfg.start_at_max = true; sensorsim_init(&m_battery_sim_state, &m_battery_sim_cfg); // Temperature is in celcius (it is multiplied by 100 to avoid floating point arithmetic). m_temp_celcius_sim_cfg.min = MIN_CELCIUS_DEGREES; m_temp_celcius_sim_cfg.max = MAX_CELCIUS_DEGRESS; m_temp_celcius_sim_cfg.incr = CELCIUS_DEGREES_INCREMENT; m_temp_celcius_sim_cfg.start_at_max = false; sensorsim_init(&m_temp_celcius_sim_state, &m_temp_celcius_sim_cfg); } /**@brief Function for handling the Connection Parameters Module. * * @details This function will be called for all events in the Connection Parameters Module which * are passed to the application. * @note All this function does is to disconnect. This could have been done by simply * setting the disconnect_on_fail config parameter, but instead we use the event * handler mechanism to demonstrate its use. * * @param[in] p_evt Event received from the Connection Parameters Module. */ static void on_conn_params_evt(ble_conn_params_evt_t * p_evt) { if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED) { APP_ERROR_CHECK(sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE)); } } /**@brief Function for handling a Connection Parameters error. * * @param[in] nrf_error Error code containing information about what went wrong. */ static void conn_params_error_handler(uint32_t nrf_error) { APP_ERROR_HANDLER(nrf_error); } /**@brief Function for initializing the Connection Parameters module. */ static void conn_params_init(void) { ble_conn_params_init_t cp_init; memset(&cp_init, 0, sizeof(cp_init)); cp_init.p_conn_params = NULL; cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY; cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY; cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT; cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID; cp_init.disconnect_on_fail = false; cp_init.evt_handler = on_conn_params_evt; cp_init.error_handler = conn_params_error_handler; APP_ERROR_CHECK(ble_conn_params_init(&cp_init)); } /**@brief Function for putting the chip into sleep mode. * * @note This function will not return. */ static void sleep_mode_enter(void) { APP_ERROR_CHECK(bsp_indication_set(BSP_INDICATE_IDLE)); // Prepare wakeup buttons. APP_ERROR_CHECK(bsp_btn_ble_sleep_mode_prepare()); // Go to system-off mode (this function will not return; wakeup will cause a reset). APP_ERROR_CHECK(sd_power_system_off()); } /**@brief Function for handling advertising events. * * @details This function will be called for advertising events which are passed to the application. * * @param[in] ble_adv_evt Advertising event. */ static void on_adv_evt(ble_adv_evt_t ble_adv_evt) { switch (ble_adv_evt) { case BLE_ADV_EVT_FAST: NRF_LOG_INFO("Fast advertising."); APP_ERROR_CHECK(bsp_indication_set(BSP_INDICATE_ADVERTISING)); break; case BLE_ADV_EVT_IDLE: sleep_mode_enter(); break; default: break; } } /**@brief Function for handling BLE events. * * @param[in] p_ble_evt Bluetooth stack event. * @param[in] p_context Unused. */ static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context) { switch (p_ble_evt->header.evt_id) { case BLE_GAP_EVT_CONNECTED: NRF_LOG_INFO("Connected."); APP_ERROR_CHECK(bsp_indication_set(BSP_INDICATE_CONNECTED)); m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle; APP_ERROR_CHECK(nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle)); m_device_connected = true; break; case BLE_GAP_EVT_DISCONNECTED: NRF_LOG_INFO("Disconnected."); m_conn_handle = BLE_CONN_HANDLE_INVALID; m_hts_meas_ind_conf_pending = false; m_device_connected = false; break; case BLE_GAP_EVT_PHY_UPDATE_REQUEST: { NRF_LOG_DEBUG("PHY update request."); ble_gap_phys_t const phys = { .rx_phys = BLE_GAP_PHY_AUTO, .tx_phys = BLE_GAP_PHY_AUTO, }; APP_ERROR_CHECK(sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys)); } break; case BLE_GATTC_EVT_TIMEOUT: // Disconnect on GATT Client timeout event. NRF_LOG_DEBUG("GATT Client Timeout."); APP_ERROR_CHECK(sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION)); break; case BLE_GATTS_EVT_TIMEOUT: // Disconnect on GATT Server timeout event. NRF_LOG_DEBUG("GATT Server Timeout."); APP_ERROR_CHECK(sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION)); break; default: // No implementation needed. break; } } /**@brief Function for initializing the BLE stack. * * @details Initializes the SoftDevice and the BLE event interrupt. */ static void ble_stack_init(void) { APP_ERROR_CHECK(nrf_sdh_enable_request()); // Configure the BLE stack using the default settings. // Fetch the start address of the application RAM. uint32_t ram_start = 0; APP_ERROR_CHECK(nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start)); // Enable BLE stack. APP_ERROR_CHECK(nrf_sdh_ble_enable(&ram_start)); // Register a handler for BLE events. NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL); } /**@brief Function for handling events from the BSP module. * * @param[in] event Event generated by button press. */ static void bsp_event_handler(bsp_event_t event) { ret_code_t err_code; switch (event) { case BSP_EVENT_SLEEP: sleep_mode_enter(); break; case BSP_EVENT_DISCONNECT: err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION); if (err_code != NRF_ERROR_INVALID_STATE) { APP_ERROR_CHECK(err_code); } break; case BSP_EVENT_WHITELIST_OFF: if (m_conn_handle == BLE_CONN_HANDLE_INVALID) { err_code = ble_advertising_restart_without_whitelist(&m_advertising); if (err_code != NRF_ERROR_INVALID_STATE) { APP_ERROR_CHECK(err_code); } } break; default: break; } } /**@brief Function for the Peer Manager initialization. */ static void peer_manager_init(void) { ble_gap_sec_params_t sec_param; APP_ERROR_CHECK(pm_init()); memset(&sec_param, 0, sizeof(ble_gap_sec_params_t)); // Security parameters to be used for all security procedures. sec_param.bond = SEC_PARAM_BOND; sec_param.mitm = SEC_PARAM_MITM; sec_param.lesc = SEC_PARAM_LESC; sec_param.keypress = SEC_PARAM_KEYPRESS; sec_param.io_caps = SEC_PARAM_IO_CAPABILITIES; sec_param.oob = SEC_PARAM_OOB; sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE; sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE; sec_param.kdist_own.enc = 1; sec_param.kdist_own.id = 1; sec_param.kdist_peer.enc = 1; sec_param.kdist_peer.id = 1; APP_ERROR_CHECK(pm_sec_params_set(&sec_param)); APP_ERROR_CHECK(pm_register(pm_evt_handler)); } /**@brief Clear bond information from persistent storage. */ static void delete_bonds(void) { NRF_LOG_INFO("Erase bonds!"); APP_ERROR_CHECK(pm_peers_delete()); } /**@brief Function for initializing the Advertising functionality. * * @details Encodes the required advertising data and passes it to the stack. * Also builds a structure to be passed to the stack when starting advertising. */ static void advertising_init(void) { ble_advertising_init_t init; memset(&init, 0, sizeof(init)); init.advdata.name_type = BLE_ADVDATA_FULL_NAME; init.advdata.include_appearance = true; init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE; init.advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]); init.advdata.uuids_complete.p_uuids = m_adv_uuids; init.config.ble_adv_fast_enabled = true; init.config.ble_adv_fast_interval = APP_ADV_INTERVAL; init.config.ble_adv_fast_timeout = APP_ADV_DURATION; init.evt_handler = on_adv_evt; APP_ERROR_CHECK(ble_advertising_init(&m_advertising, &init)); ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG); } /**@brief Function for initializing buttons and leds. * * @param[out] p_erase_bonds Will be true if the clear bonding button was pressed to wake the application up. */ static void buttons_leds_init(bool * p_erase_bonds) { bsp_event_t startup_event; APP_ERROR_CHECK(bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler)); APP_ERROR_CHECK(bsp_btn_ble_init(NULL, &startup_event)); *p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA); } /**@brief Function for initializing the nrf log module. */ static void log_init(void) { APP_ERROR_CHECK(NRF_LOG_INIT(NULL)); NRF_LOG_DEFAULT_BACKENDS_INIT(); } /**@brief Function for initializing power management. */ static void power_management_init(void) { APP_ERROR_CHECK(nrf_pwr_mgmt_init()); } /**@brief Function for handling the idle state (main loop). * * @details If there is no pending log operation, then sleep until next the next event occurs. */ static void idle_state_handle(void) { if (NRF_LOG_PROCESS() == false) { nrf_pwr_mgmt_run(); } } /**@brief Function for starting advertising. */ static void advertising_start(bool erase_bonds) { if (erase_bonds == true) { delete_bonds(); // Advertising is started by PM_EVT_PEERS_DELETE_SUCCEEDED event. } else { APP_ERROR_CHECK(ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST)); } } #define SIZE 16 #define ADDR 0x0680 #define DATA 0x28 uint8_t read_data[SIZE], write_data[SIZE]; /**@brief Function for application main entry. */ int main(void) { bool erase_bonds; memset(write_data, DATA, SIZE); /* Initialize log. */ log_init(); /* Initialize oled. */ spi_init(); oled_init(); nrf_delay_ms(2000); /* Initialize eeprom. */ twi_init(); /* Read configured memory */ EEPROM_WriteMemory(ADDR, write_data, SIZE); nrf_delay_ms(10); EEPROM_ReadMemory(ADDR, read_data, SIZE); timers_init(saadc_acquisition_timeout_handler, battery_level_meas_timeout_handler); buttons_leds_init(&erase_bonds); power_management_init(); ble_stack_init(); gap_params_init(); gatt_init(); advertising_init(); services_init(); sensor_simulator_init(); conn_params_init(); peer_manager_init(); /* Start execution. */ advertising_start(erase_bonds); saadc_init(saadc_callback); saadc_sampling_event_init(); saadc_sampling_event_enable(); NRF_LOG_INFO("Software started."); /* Enter main loop. */ for (;;) { saadc_wait_calibration(); ssd1309_SetCursor(0, 0); ssd1309_WriteString("Testing 1 2 3!", Font_7x10, White); ssd1309_UpdateScreen(); NRF_LOG_FLUSH(); idle_state_handle(); } } /** * @} */
#include "peripherals.h" #include "boards.h" #include "nrf_log.h" #include "nrf_log_ctrl.h" #include "nrf_log_default_backends.h" #include "TT_Config.h" /* DEFINES */ #define SAADC_TIMER_INSTANCE 1 #define EEPROM_TWI_INSTANCE 1 #define OLED_SPI_INSTANCE 0 /* TIMER instances */ static const nrf_drv_timer_t SAADC_TIMER = NRF_DRV_TIMER_INSTANCE(SAADC_TIMER_INSTANCE); /**< ADC timer. */ static const nrf_drv_timer_t BATTERY_TIMER = NRF_DRV_TIMER_INSTANCE(2); /**< Battery timer. */ /* PPI instances */ static nrf_ppi_channel_t SAADC_TIMER_PPI_CHANNEL; /* TWI instances */ const nrf_drv_twi_t m_eeprom_twi = NRF_DRV_TWI_INSTANCE(EEPROM_TWI_INSTANCE); /* SPI instances */ const nrf_drv_spi_t m_oled_spi = NRF_DRV_SPI_INSTANCE(OLED_SPI_INSTANCE); static nrf_saadc_value_t m_buffer_pool[2][RAW_ADC_BUFF_SIZE]; uint32_t m_saadc_evt_counter; bool m_saadc_calibrate = false; /**< SAADC internal calibration trigger flag */ void saadc_set_buffer(void) { APP_ERROR_CHECK(nrf_drv_saadc_buffer_convert(m_buffer_pool[0], RAW_ADC_BUFF_SIZE)); APP_ERROR_CHECK(nrf_drv_saadc_buffer_convert(m_buffer_pool[1], RAW_ADC_BUFF_SIZE)); } void saadc_init(nrf_drv_saadc_event_handler_t battery_event_handler) { nrf_saadc_channel_config_t adc_channel_config = NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(NRF_SAADC_INPUT_AIN1); nrf_saadc_channel_config_t battery_channel_config = NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(NRF_SAADC_INPUT_AIN2); m_saadc_calibrate = false; APP_ERROR_CHECK(nrf_drv_saadc_init(NULL, battery_event_handler)); APP_ERROR_CHECK(nrf_drv_saadc_channel_init(0, &adc_channel_config)); APP_ERROR_CHECK(nrf_drv_saadc_channel_init(1, &battery_channel_config)); APP_ERROR_CHECK(nrf_drv_saadc_buffer_convert(m_buffer_pool[0], RAW_ADC_BUFF_SIZE)); APP_ERROR_CHECK(nrf_drv_saadc_buffer_convert(m_buffer_pool[1], RAW_ADC_BUFF_SIZE)); } /** * @brief TWI initialization. */ void twi_init(void) { const nrf_drv_twi_config_t twi_config = { .scl = ARDUINO_SCL_PIN, .sda = ARDUINO_SDA_PIN, .frequency = NRF_DRV_TWI_FREQ_100K, .interrupt_priority = APP_IRQ_PRIORITY_HIGH, .clear_bus_init = true }; #if TWI_USE_INTERRUPT APP_ERROR_CHECK(nrf_drv_twi_init(&m_eeprom_twi, &twi_config, eeprom_callback, NULL)); #else APP_ERROR_CHECK(nrf_drv_twi_init(&m_eeprom_twi, &twi_config, NULL, NULL)); #endif nrf_drv_twi_enable(&m_eeprom_twi); } /** * @brief SPI initialization. */ void spi_init(void) { nrf_drv_spi_config_t spi_config = NRF_DRV_SPI_DEFAULT_CONFIG; spi_config.ss_pin = ARDUINO_10_PIN; // spi_config.miso_pin = ARDUINO_12_PIN; spi_config.mosi_pin = ARDUINO_11_PIN; spi_config.sck_pin = ARDUINO_13_PIN; #if SPI_USE_INTERRUPT APP_ERROR_CHECK(nrf_drv_spi_init(&m_oled_spi, &spi_config, oled_spi_callback, NULL)); #else APP_ERROR_CHECK(nrf_drv_spi_init(&m_oled_spi, &spi_config, NULL, NULL)); #endif } /**@brief Function for the Timer initialization. * * @details Initializes the timer module. This creates and starts application timers. */ void timers_init(nrfx_timer_event_handler_t saadc_timer, nrfx_timer_event_handler_t battery_timer_handler) { nrf_drv_timer_config_t timer_cfg = NRF_DRV_TIMER_DEFAULT_CONFIG; /* Enable app timer */ APP_ERROR_CHECK(app_timer_init()); /* Create ADC timer */ APP_ERROR_CHECK(nrf_drv_timer_init(&SAADC_TIMER, &timer_cfg, saadc_timer)); nrf_drv_timer_extended_compare(&SAADC_TIMER, NRF_TIMER_CC_CHANNEL0, nrf_drv_timer_ms_to_ticks(&SAADC_TIMER, ADC_ACQUISITION_INTERVAL), NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK, true); /* Configure BATTERY TIMER */ APP_ERROR_CHECK(nrf_drv_timer_init(&BATTERY_TIMER, &timer_cfg, battery_timer_handler)); nrf_drv_timer_extended_compare(&BATTERY_TIMER, NRF_TIMER_CC_CHANNEL0, nrf_drv_timer_ms_to_ticks(&BATTERY_TIMER, BATTERY_LEVEL_MEAS_INTERVAL), NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK, true); } void saadc_sampling_event_init(void) { uint32_t transducer_timer_compare_event_addr, battery_timer_compare_event_addr; uint32_t saadc_sample_task_addr; APP_ERROR_CHECK(nrf_drv_ppi_init()); nrf_drv_timer_enable(&SAADC_TIMER); nrf_drv_timer_enable(&BATTERY_TIMER); transducer_timer_compare_event_addr = nrf_drv_timer_compare_event_address_get(&SAADC_TIMER, NRF_TIMER_CC_CHANNEL0); saadc_sample_task_addr = nrf_drv_saadc_sample_task_get(); /* Setup ppi channel so that timer compare event is triggering sample tasks in SAADC */ APP_ERROR_CHECK(nrf_drv_ppi_channel_alloc(&SAADC_TIMER_PPI_CHANNEL)); APP_ERROR_CHECK(nrf_drv_ppi_channel_assign(SAADC_TIMER_PPI_CHANNEL, transducer_timer_compare_event_addr, saadc_sample_task_addr)); } void saadc_sampling_event_enable(void) { APP_ERROR_CHECK(nrf_drv_ppi_channel_enable(SAADC_TIMER_PPI_CHANNEL)); } void saadc_wait_calibration(void) { if (true == m_saadc_calibrate) { NRF_LOG_INFO("SAADC calibration starting... \r\n"); /* Trigger calibration task */ while (NRF_SUCCESS != nrf_drv_saadc_calibrate_offset()) { } m_saadc_calibrate = false; } }