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BLE_App_Uart + ADC + PWM

Hi everyone.

I know this is gonna be a long story, thank you for your patience...

I have successfully utilized a few examples in the SDK15.3 directory on my PCA10056 including the PWM driver, BLE_APP_UART and SAADC.

Also I could merge the PWM driver example and the BLE_APP_Uart.

now that I have tried to add the SAADC example to my code, everything stops working, e.g. all the LEDs that are controlled by the buttons and the PWM driver and the UART output on my terminal... only a blank line is added on each loop. (neither log or printf work).

the code is built and flashed on the core successfully without any errors.

when I try to debug my code using Keil5 it shows that the program stops somewhere like "NRF_BREAKPOINT_COND", I am not aware what it is for. Here it is:

The code is quite large in the main.c file but as its built without any error I only add main function here:

int main(void)
{
    bool erase_bonds;
uint32_t err_code;

    // Initialize.
    uart_init();
    log_init();
    timers_init();
    buttons_leds_init(&erase_bonds);
    power_management_init();
    ble_stack_init();
    gap_params_init();
    gatt_init();
    services_init();
    advertising_init();
    conn_params_init();
			//mig//
			printf("\r\n  .UART + PWM Periph \r\n");
	    printf("\r\nUART started.\r\n");

//	    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.");

	
	   //init app_button module, 50ms detection delay (button debouncing)
    err_code = app_button_init((app_button_cfg_t *)app_buttons,
                                   NUM_OF_BUTTONS,
                                   APP_TIMER_TICKS(50));//, APP_TIMER_PRESCALER));
    APP_ERROR_CHECK(err_code);

    err_code = app_button_enable();
    APP_ERROR_CHECK(err_code);
	
    // Start execution.
  
    NRF_LOG_INFO("Debug logging for UART over RTT started.");
    advertising_start();
		    pwm_init();

    pwm_update_duty_cycle(DS);
    //demo2();
    // Enter main loop.
    for (;;)
    {
				nrf_delay_ms(300);
			  printf("\r\nLoop.\r\n");
	  		NRF_LOG_FLUSH();

        nrf_pwr_mgmt_run();
        
    }
}

Parents
  • Check your call stack, there should be error info in there.

    What does your log say?

  • Hi Haakonsh,

    I see a "app_error_fault_handler" function in the call stack tab , nothing more ...

    also I don't receive the log through COM port at all.

    there are two other suggestions:

    1: as mentioned here the error occurs while debugging might be totally deceiving.

    2: I suspect that enabling the nrf_log module while using the UART module in the BLE example might bring about some conflicts though I have no idea why it should cause the MCU stop working.

  • I have tried the BLE_app_uart example and I found out that my rtt viewer was too old for nrf52840!! I downloaded a new version and it seems to work fine. I receive my logs in the rtt viewer, but still it doesn't help on my own project, it only sends a "fatal error" massage. even I increased the logging level to 4.

    I have attached a screenshot of it..

    Here is my main.c file. I have not added much things except for the saadc and pwm configuration:

    /**
     * Copyright (c) 2014 - 2019, 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 ble_sdk_uart_over_ble_main main.c
     * @{
     * @ingroup  ble_sdk_app_nus_eval
     * @brief    UART over BLE application main file.
     *
     * This file contains the source code for a sample application that uses the Nordic UART service.
     * This application uses the @ref srvlib_conn_params module.
     */
    
    
    #include <stdint.h>
    #include <string.h>
    #include "nordic_common.h"
    #include "nrf.h"
    #include "ble_hci.h"
    #include "ble_advdata.h"
    #include "ble_advertising.h"
    #include "ble_conn_params.h"
    #include "nrf_sdh.h"
    #include "nrf_sdh_soc.h"
    #include "nrf_sdh_ble.h"
    #include "nrf_ble_gatt.h"
    #include "nrf_ble_qwr.h"
    #include "app_timer.h"
    #include "ble_nus.h"
    #include "app_uart.h"
    #include "app_util_platform.h"
    #include "bsp_btn_ble.h"
    #include "nrf_pwr_mgmt.h"
    //..mig..//
    #include "nrf_drv_pwm.h"
    #include "nrf_delay.h"
    #include "app_button.h"
    #include "nrf_drv_saadc.h"
    #include "nrf_drv_ppi.h"
    #include "nrf_drv_timer.h"
    #define NUM_OF_BUTTONS 2
    
    
    
    
    #if defined (UART_PRESENT)
    #include "nrf_uart.h"
    #endif
    #if defined (UARTE_PRESENT)
    #include "nrf_uarte.h"
    #endif
    
    #include "nrf_log.h"
    #include "nrf_log_ctrl.h"
    #include "nrf_log_default_backends.h"
    
    #define APP_BLE_CONN_CFG_TAG            1                                           /**< A tag identifying the SoftDevice BLE configuration. */
    
    #define DEVICE_NAME                     "Nordic:-)_UART"                               /**< Name of device. Will be included in the advertising data. */
    #define NUS_SERVICE_UUID_TYPE           BLE_UUID_TYPE_VENDOR_BEGIN                  /**< UUID type for the Nordic UART Service (vendor specific). */
    
    #define APP_BLE_OBSERVER_PRIO           3                                           /**< Application's BLE observer priority. You shouldn't need to modify this value. */
    
    #define APP_ADV_INTERVAL                64                                          /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */
    
    #define APP_ADV_DURATION                18000                                       /**< The advertising duration (180 seconds) in units of 10 milliseconds. */
    
    #define MIN_CONN_INTERVAL               MSEC_TO_UNITS(20, UNIT_1_25_MS)             /**< Minimum acceptable connection interval (20 ms), Connection interval uses 1.25 ms units. */
    #define MAX_CONN_INTERVAL               MSEC_TO_UNITS(75, UNIT_1_25_MS)             /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */
    #define SLAVE_LATENCY                   0                                           /**< Slave latency. */
    #define CONN_SUP_TIMEOUT                MSEC_TO_UNITS(4000, UNIT_10_MS)             /**< Connection supervisory timeout (4 seconds), Supervision Timeout uses 10 ms units. */
    #define FIRST_CONN_PARAMS_UPDATE_DELAY  APP_TIMER_TICKS(5000)                       /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
    #define NEXT_CONN_PARAMS_UPDATE_DELAY   APP_TIMER_TICKS(30000)                      /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
    #define MAX_CONN_PARAMS_UPDATE_COUNT    3                                           /**< Number of attempts before giving up the connection parameter negotiation. */
    
    #define DEAD_BEEF                       0xDEADBEEF                                  /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
    
    #define UART_TX_BUF_SIZE                256                                         /**< UART TX buffer size. */
    #define UART_RX_BUF_SIZE                256                                         /**< UART RX buffer size. */
    
    
    BLE_NUS_DEF(m_nus, NRF_SDH_BLE_TOTAL_LINK_COUNT);                                   /**< BLE NUS service instance. */
    NRF_BLE_GATT_DEF(m_gatt);                                                           /**< GATT module instance. */
    NRF_BLE_QWR_DEF(m_qwr);                                                             /**< Context for the Queued Write module.*/
    BLE_ADVERTISING_DEF(m_advertising);                                                 /**< Advertising module instance. */
    
    static uint16_t   m_conn_handle          = BLE_CONN_HANDLE_INVALID;                 /**< Handle of the current connection. */
    static uint16_t   m_ble_nus_max_data_len = BLE_GATT_ATT_MTU_DEFAULT - 3;            /**< Maximum length of data (in bytes) that can be transmitted to the peer by the Nordic UART service module. */
    static ble_uuid_t m_adv_uuids[]          =                                          /**< Universally unique service identifier. */
    {
        {BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE}
    };
    //ADC b
    #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);
    
    }
    
    
    ///ADC f
    
    
    
    //PWM demo2
    static nrf_drv_pwm_t m_pwm0 = NRF_DRV_PWM_INSTANCE(0);
    //static nrf_drv_pwm_t m_pwm1 = NRF_DRV_PWM_INSTANCE(1);
    //static nrf_drv_pwm_t m_pwm2 = NRF_DRV_PWM_INSTANCE(2);
    unsigned int  step_bias = 20;
    
    // This is for tracking PWM instances being used, so we can unintialize only
    // the relevant ones when switching from one demo to another.
    #define USED_PWM(idx) (1UL << idx)
    static uint8_t m_used = 0;
    
    //pwm uPDAte
     uint8_t DS = 50;
    #define OUTPUT_PIN LED_3
    // Declare variables holding PWM sequence values. In this example only one channel is used 
    nrf_pwm_values_individual_t seq_values[] = {0, 0, 0, 0};
    nrf_pwm_sequence_t const seq =
    {
        .values.p_individual = seq_values,
        .length          = NRF_PWM_VALUES_LENGTH(seq_values),
        .repeats         = 0,
        .end_delay       = 0
    };
    
    // Set duty cycle between 0 and 100%
    void pwm_update_duty_cycle(uint8_t duty_cycle)
    {
        
        // Check if value is outside of range. If so, set to 100%
        if(duty_cycle >= 100)
        {
            seq_values->channel_0 = 100 | 0x8000;
        }
        else
        {
            seq_values->channel_0 = duty_cycle | 0x8000;
        }
        
        nrf_drv_pwm_simple_playback(&m_pwm0, &seq, 1, NRF_DRV_PWM_FLAG_LOOP);
    }
    
    static void pwm_init(void)
    {
        nrf_drv_pwm_config_t const config0 =
        {
            .output_pins =
            {
                OUTPUT_PIN, // channel 0
                NRF_DRV_PWM_PIN_NOT_USED,             // channel 1
                NRF_DRV_PWM_PIN_NOT_USED,             // channel 2
                NRF_DRV_PWM_PIN_NOT_USED,             // channel 3
            },
            .irq_priority = APP_IRQ_PRIORITY_LOWEST,
            .base_clock   = NRF_PWM_CLK_1MHz,
            .count_mode   = NRF_PWM_MODE_UP,
            .top_value    = 100,
            .load_mode    = NRF_PWM_LOAD_INDIVIDUAL,
            .step_mode    = NRF_PWM_STEP_AUTO
        };
        // Init PWM without error handler
        APP_ERROR_CHECK(nrf_drv_pwm_init(&m_pwm0, &config0, NULL));
        
    }
    
    
    
    
    //static uint16_t const              m_demo1_top  = 10000;
    //static uint16_t const              m_demo1_step = 200;
    //static uint8_t                     m_demo1_phase;
    //static nrf_pwm_values_individual_t m_demo1_seq_values;
    //static nrf_pwm_sequence_t const    m_demo1_seq =
    //{
    //    .values.p_individual = &m_demo1_seq_values,
    //    .length              = NRF_PWM_VALUES_LENGTH(m_demo1_seq_values),
    //    .repeats             = 0,
    //    .end_delay           = 0
    //};
        enum { // [local constants]
            TOP        = 10000,
            STEP_COUNT = 50
        };
    static void demo2(void)
    {
        NRF_LOG_INFO("Demo 2");
    
        /*
         * This demo plays back two concatenated sequences:
         * - Sequence 0: Light intensity is increased in 25 steps during one second.
         * - Sequence 1: LED blinks twice (100 ms off, 100 ms on), then stays off
         *   for 200 ms.
         * The same output is generated on all 4 channels (LED 1 - LED 4).
         * The playback is repeated in a loop.
         */
    
    
    
        nrf_drv_pwm_config_t const config0 =
        {
            .output_pins =
            {
                BSP_LED_0 | NRF_DRV_PWM_PIN_INVERTED, // channel 0
                BSP_LED_1 | NRF_DRV_PWM_PIN_INVERTED, // channel 1
                BSP_LED_2 | NRF_DRV_PWM_PIN_INVERTED, // channel 2
                BSP_LED_3 | NRF_DRV_PWM_PIN_INVERTED  // channel 3
            },
            .irq_priority = APP_IRQ_PRIORITY_LOWEST,
            .base_clock   = NRF_PWM_CLK_500kHz,
            .count_mode   = NRF_PWM_MODE_UP,
            .top_value    = TOP,
            .load_mode    = NRF_PWM_LOAD_COMMON,
            .step_mode    = NRF_PWM_STEP_AUTO
        };
        APP_ERROR_CHECK(nrf_drv_pwm_init(&m_pwm0, &config0, NULL));
        m_used |= USED_PWM(0);
    
        // This array cannot be allocated on stack (hence "static") and it must
        // be in RAM.
        static nrf_pwm_values_common_t seq0_values[STEP_COUNT];
        uint16_t value = 0;
        uint16_t step  = TOP / STEP_COUNT;
        uint8_t  i;
    		unsigned int  step_sum;
    		step_sum = STEP_COUNT + step_bias;
    //			printf("\r\nin Demo2! .%u \r\n",step_sum);
        for (i = 0; i < step_sum; ++i)
        {
            value         += step;
            seq0_values[i] = value;
        }
    
        nrf_pwm_sequence_t const seq0 =
        {
            .values.p_common = seq0_values,
            .length          = NRF_PWM_VALUES_LENGTH(seq0_values),
            .repeats         = 1,
            .end_delay       = 0
        };
    
        // This array cannot be allocated on stack (hence "static") and it must
        // be in RAM (hence no "const", though its content is not changed).
        static nrf_pwm_values_common_t /*const*/ seq1_values[] =
        {
                 0,
            0x8F10,
                 0,
            0x8800,
                 0,
                 0
        };
        nrf_pwm_sequence_t const seq1 =
        {
            .values.p_common = seq1_values,
            .length          = NRF_PWM_VALUES_LENGTH(seq1_values),
            .repeats         = 2,
            .end_delay       = 0
        };
    
        (void)nrf_drv_pwm_complex_playback(&m_pwm0, &seq0, &seq1,1,
                                           NRF_DRV_PWM_FLAG_LOOP);
    }
    
    
    
    
    /**@brief Function for assert macro callback.
     *
     * @details This function will be called in case of an assert in the SoftDevice.
     *
     * @warning This handler is an example only and does not fit a final product. You need to analyse
     *          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] p_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 initializing the timer module.
     */
    static void timers_init(void)
    {
        ret_code_t err_code = app_timer_init();
        APP_ERROR_CHECK(err_code);
    }
    
    /**@brief Function for the GAP initialization.
     *
     * @details This function will set up all the necessary GAP (Generic Access Profile) parameters of
     *          the device. It also sets the permissions and appearance.
     */
    static void gap_params_init(void)
    {
        uint32_t                err_code;
        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);
    
        err_code = sd_ble_gap_device_name_set(&sec_mode,
                                              (const uint8_t *) DEVICE_NAME,
                                              strlen(DEVICE_NAME));
        APP_ERROR_CHECK(err_code);
    
        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;
    
        err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@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 handling the data from the Nordic UART Service.
     *
     * @details This function will process the data received from the Nordic UART BLE Service and send
     *          it to the UART module.
     *
     * @param[in] p_evt       Nordic UART Service event.
     */
    /**@snippet [Handling the data received over BLE] */
    static void nus_data_handler(ble_nus_evt_t * p_evt)
    {
    
        if (p_evt->type == BLE_NUS_EVT_RX_DATA)
        {
            uint32_t err_code;
    
            NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
            NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);
    
            for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)
            {
                do
                {
                    err_code = app_uart_put(p_evt->params.rx_data.p_data[i]);
                    if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY))
                    {
                        NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code);
                        APP_ERROR_CHECK(err_code);
                    }
                } while (err_code == NRF_ERROR_BUSY);
            }
            if (p_evt->params.rx_data.p_data[p_evt->params.rx_data.length - 1] == '\r')
            {
                while (app_uart_put('\n') == NRF_ERROR_BUSY);
            }
        }
    
    }
    /**@snippet [Handling the data received over BLE] */
    
    
    /**@brief Function for initializing services that will be used by the application.
     */
    static void services_init(void)
    {
        uint32_t           err_code;
        ble_nus_init_t     nus_init;
        nrf_ble_qwr_init_t qwr_init = {0};
    
        // Initialize Queued Write Module.
        qwr_init.error_handler = nrf_qwr_error_handler;
    
        err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);
        APP_ERROR_CHECK(err_code);
    
        // Initialize NUS.
        memset(&nus_init, 0, sizeof(nus_init));
    
        nus_init.data_handler = nus_data_handler;
    
        err_code = ble_nus_init(&m_nus, &nus_init);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for handling an event from 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)
    {
        uint32_t err_code;
    
        if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED)
        {
            err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
            APP_ERROR_CHECK(err_code);
        }
    }
    
    
    /**@brief Function for handling errors from the Connection Parameters module.
     *
     * @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)
    {
        uint32_t               err_code;
        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;
    
        err_code = ble_conn_params_init(&cp_init);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for putting the chip into sleep mode.
     *
     * @note This function will not return.
     */
    static void sleep_mode_enter(void)
    {
        uint32_t err_code = bsp_indication_set(BSP_INDICATE_IDLE);
        APP_ERROR_CHECK(err_code);
    
        // Prepare wakeup buttons.
        err_code = bsp_btn_ble_sleep_mode_prepare();
        APP_ERROR_CHECK(err_code);
    
        // Go to system-off mode (this function will not return; wakeup will cause a reset).
        err_code = sd_power_system_off();
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@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)
    {
        uint32_t err_code;
    
        switch (ble_adv_evt)
        {
            case BLE_ADV_EVT_FAST:
                err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
                APP_ERROR_CHECK(err_code);
                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)
    {
        uint32_t err_code;
    
        switch (p_ble_evt->header.evt_id)
        {
            case BLE_GAP_EVT_CONNECTED:
                NRF_LOG_INFO("Connected");
                err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
                APP_ERROR_CHECK(err_code);
                m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
                err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
                APP_ERROR_CHECK(err_code);
                break;
    
            case BLE_GAP_EVT_DISCONNECTED:
                NRF_LOG_INFO("Disconnected");
                // LED indication will be changed when advertising starts.
                m_conn_handle = BLE_CONN_HANDLE_INVALID;
                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,
                };
                err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
                APP_ERROR_CHECK(err_code);
            } break;
    
            case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
                // Pairing not supported
                err_code = sd_ble_gap_sec_params_reply(m_conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
                APP_ERROR_CHECK(err_code);
                break;
    
            case BLE_GATTS_EVT_SYS_ATTR_MISSING:
                // No system attributes have been stored.
                err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0);
                APP_ERROR_CHECK(err_code);
                break;
    
            case BLE_GATTC_EVT_TIMEOUT:
                // Disconnect on GATT Client timeout event.
                err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
                                                 BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
                APP_ERROR_CHECK(err_code);
                break;
    
            case BLE_GATTS_EVT_TIMEOUT:
                // Disconnect on GATT Server timeout event.
                err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
                                                 BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
                APP_ERROR_CHECK(err_code);
                break;
    
            default:
                // No implementation needed.
                break;
        }
    }
    
    
    /**@brief Function for the SoftDevice initialization.
     *
     * @details This function initializes the SoftDevice and the BLE event interrupt.
     */
    static void ble_stack_init(void)
    {
        ret_code_t err_code;
    
        err_code = nrf_sdh_enable_request();
        APP_ERROR_CHECK(err_code);
    
        // Configure the BLE stack using the default settings.
        // Fetch the start address of the application RAM.
        uint32_t ram_start = 0;
        err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
        APP_ERROR_CHECK(err_code);
    
        // Enable BLE stack.
        err_code = nrf_sdh_ble_enable(&ram_start);
        APP_ERROR_CHECK(err_code);
    
        // 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 GATT library. */
    void gatt_evt_handler(nrf_ble_gatt_t * p_gatt, nrf_ble_gatt_evt_t const * p_evt)
    {
        if ((m_conn_handle == p_evt->conn_handle) && (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED))
        {
            m_ble_nus_max_data_len = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH;
            NRF_LOG_INFO("Data len is set to 0x%X(%d)", m_ble_nus_max_data_len, m_ble_nus_max_data_len);
        }
        NRF_LOG_DEBUG("ATT MTU exchange completed. central 0x%x peripheral 0x%x",
                      p_gatt->att_mtu_desired_central,
                      p_gatt->att_mtu_desired_periph);
    }
    
    
    /**@brief Function for initializing the GATT library. */
    void gatt_init(void)
    {
        ret_code_t err_code;
    						
        err_code = nrf_ble_gatt_init(&m_gatt, gatt_evt_handler);
        APP_ERROR_CHECK(err_code);
    
        err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for handling events from the BSP module.
     *
     * @param[in]   event   Event generated by button press.
     */
    void bsp_event_handler(bsp_event_t event)
    {
        uint32_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 handling app_uart events.
     *
     * @details This function will receive a single character from the app_uart module and append it to
     *          a string. The string will be be sent over BLE when the last character received was a
     *          'new line' '\n' (hex 0x0A) or if the string has reached the maximum data length.
     */
    /**@snippet [Handling the data received over UART] */
    void uart_event_handle(app_uart_evt_t * p_event)
    {
        static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
        static uint8_t index = 0;
        uint32_t       err_code;
    
        switch (p_event->evt_type)
        {
            case APP_UART_DATA_READY:
                UNUSED_VARIABLE(app_uart_get(&data_array[index]));
                index++;
    
                if ((data_array[index - 1] == '\n') ||
                    (data_array[index - 1] == '\r') ||
                    (index >= m_ble_nus_max_data_len))
                {
                    if (index > 1)
                    {
                        NRF_LOG_DEBUG("Ready to send data over BLE NUS");
                        NRF_LOG_HEXDUMP_DEBUG(data_array, index);
    
                        do
                        {
                            uint16_t length = (uint16_t)index;
                            err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
                            if ((err_code != NRF_ERROR_INVALID_STATE) &&
                                (err_code != NRF_ERROR_RESOURCES) &&
                                (err_code != NRF_ERROR_NOT_FOUND))
                            {
                                APP_ERROR_CHECK(err_code);
                            }
                        } while (err_code == NRF_ERROR_RESOURCES);
                    }
    
                    index = 0;
                }
                break;
    
            case APP_UART_COMMUNICATION_ERROR:
                APP_ERROR_HANDLER(p_event->data.error_communication);
                break;
    
            case APP_UART_FIFO_ERROR:
                APP_ERROR_HANDLER(p_event->data.error_code);
                break;
    
            default:
                break;
        }
    }
    /**@snippet [Handling the data received over UART] */
    
    
    /**@brief  Function for initializing the UART module.
     */
    /**@snippet [UART Initialization] */
    static void uart_init(void)
    {
        uint32_t                     err_code;
        app_uart_comm_params_t const comm_params =
        {
            .rx_pin_no    = RX_PIN_NUMBER,
            .tx_pin_no    = TX_PIN_NUMBER,
            .rts_pin_no   = RTS_PIN_NUMBER,
            .cts_pin_no   = CTS_PIN_NUMBER,
            .flow_control = APP_UART_FLOW_CONTROL_DISABLED,
            .use_parity   = false,
    #if defined (UART_PRESENT)
            .baud_rate    = NRF_UART_BAUDRATE_115200
    #else
            .baud_rate    = NRF_UARTE_BAUDRATE_115200
    #endif
        };
    
        APP_UART_FIFO_INIT(&comm_params,
                           UART_RX_BUF_SIZE,
                           UART_TX_BUF_SIZE,
                           uart_event_handle,
                           APP_IRQ_PRIORITY_LOWEST,
                           err_code);
        APP_ERROR_CHECK(err_code);
    }
    /**@snippet [UART Initialization] */
    
    
    /**@brief Function for initializing the Advertising functionality.
     */
    static void advertising_init(void)
    {
        uint32_t               err_code;
        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_LIMITED_DISC_MODE;
    //Me!
    	    int8_t tx_power_level = 0;
    	    sd_ble_gap_tx_power_set(BLE_GAP_TX_POWER_ROLE_ADV, m_advertising.adv_handle ,tx_power_level);
    			
    			init.advdata.p_tx_power_level = &tx_power_level;
    //!eM	
        init.srdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
        init.srdata.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;
    
        err_code = ble_advertising_init(&m_advertising, &init);
        APP_ERROR_CHECK(err_code);
    
        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;
    
        uint32_t err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler);
        APP_ERROR_CHECK(err_code);
    
        err_code = bsp_btn_ble_init(NULL, &startup_event);
        APP_ERROR_CHECK(err_code);
    
        *p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
    }
    
    
    /**@brief Function for initializing the nrf log module.
     */
    static void log_init(void)
    {
        ret_code_t err_code = NRF_LOG_INIT(NULL);
        APP_ERROR_CHECK(err_code);
    
        NRF_LOG_DEFAULT_BACKENDS_INIT();
    }
    
    
    /**@brief Function for initializing power management.
     */
    static void power_management_init(void)
    {
        ret_code_t err_code;
        err_code = nrf_pwr_mgmt_init();
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@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(void)
    {
        uint32_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
        APP_ERROR_CHECK(err_code);
    }
    
    //mig//
    /**@brief Function for Handle Button Events!
     */
    static void button_event_handler(uint8_t pin_no, uint8_t button_action)
    {
    	uint32_t       err_code;
    static uint8_t index = 3;
        //code run on button state change
    		//    printf("\r\nbutton state change.\r\n");
    		//		err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
    			//	bsp_board_led_invert(1);
    	                
    //migmig//
    	
    //printf("%i",pin_no);
       switch (pin_no)
        {
            case 11:
    					bsp_board_led_invert(0);
    					printf("\r\nClick+ .%u \r\n",DS);
    				if (DS <= 90){
    	  			DS =  DS + 5;
    					pwm_update_duty_cycle(DS);
    				}
                do
                        {
                            uint16_t  length = (uint16_t)index;
                            err_code = ble_nus_data_send(&m_nus, "1\r\n", &length, m_conn_handle);
                            if ((err_code != NRF_ERROR_INVALID_STATE) &&
                                (err_code != NRF_ERROR_RESOURCES) &&
                                (err_code != NRF_ERROR_NOT_FOUND))
                            {
                                APP_ERROR_CHECK(err_code);
                            }
                        } while (err_code == NRF_ERROR_RESOURCES);
    				 break;
    				case 12:
    					bsp_board_led_invert(1);
    		  						printf("\r\nClicked- .%u \r\n",DS);
    				if (DS >=9){
    	  			DS =  DS - 5;
    					pwm_update_duty_cycle(DS);
    				}
                do
                        {
                            uint16_t  length = (uint16_t)index;
                            err_code = ble_nus_data_send(&m_nus, "2\r\n", &length, m_conn_handle);
                            if ((err_code != NRF_ERROR_INVALID_STATE) &&
                                (err_code != NRF_ERROR_RESOURCES) &&
                                (err_code != NRF_ERROR_NOT_FOUND))
                            {
                                APP_ERROR_CHECK(err_code);
                            }
                        } while (err_code == NRF_ERROR_RESOURCES);
    						 break;
    				default:
    						printf("\r\nErrorSwiTch.\r\n");
                break;
    			}
    	
    	
    	
    }
    //Configure 2 buttons with pullup and detection on low state
    static const app_button_cfg_t app_buttons[NUM_OF_BUTTONS] = 
    {
        {BUTTON_1, false, BUTTON_PULL, button_event_handler},
        {BUTTON_2, false, BUTTON_PULL, button_event_handler},
    };
    
    /**@brief Application main function.
     */
    
    int main(void)
    {
        bool erase_bonds;
    uint32_t err_code;
    
        // Initialize.
        uart_init();
        log_init();
        timers_init();
        buttons_leds_init(&erase_bonds);
        power_management_init();
        ble_stack_init();
        gap_params_init();
        gatt_init();
        services_init();
        advertising_init();
        conn_params_init();
    			//mig//
    			printf("\r\n  .UART + PWM Periph \r\n");
    	    printf("\r\nUART started.\r\n");
    
    //	    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();   //it has already been called
    //    APP_ERROR_CHECK(ret_code);
    
        saadc_init();
        saadc_sampling_event_init();
        saadc_sampling_event_enable();
        NRF_LOG_INFO("SAADC HAL simple example started.");
    
    	
    	   //init app_button module, 50ms detection delay (button debouncing)
        err_code = app_button_init((app_button_cfg_t *)app_buttons,
                                       NUM_OF_BUTTONS,
                                       APP_TIMER_TICKS(50));//, APP_TIMER_PRESCALER));
        APP_ERROR_CHECK(err_code);
    
        err_code = app_button_enable();
        APP_ERROR_CHECK(err_code);
    	
        // Start execution.
      
        NRF_LOG_INFO("Debug logging for UART over RTT started.");
        advertising_start();
    		    pwm_init();
    
        pwm_update_duty_cycle(DS);
    //demo2();
        // Enter main loop.
        for (;;)
        {
    				nrf_delay_ms(300);
    			  printf("\r\nLoop.\r\n");
    	  		NRF_LOG_FLUSH();
            nrf_pwr_mgmt_run();
            
        }
    }
    
    
    /**
     * @}
     */
    

  • You need to add the DEBUG flag to your list of preprocessor symbols.

  • So here we are:

    and here we have the Call stack :

    line 1074 is actually the error.handler and before that , as is in the main.c file I had post before, there are some initialization, what do you suggest?

  • That looks like a SoftDevice assert. What version of the SoftDevice are you using?

  • Well I suspect that NRF_DRV_TIMER_INSTANCE(0) could have caused the problem (I found this may cause trouble problem only by chance! ) but changing it to NRF_DRV_TIMER_INSTANCE(1) did not make any difference...

Reply Children
  • haakonsh said:
    That looks like a SoftDevice assert. What version of the SoftDevice are you using?

     

     

    Neuro_Rouh said:
    Well I suspect that NRF_DRV_TIMER_INSTANCE(0) could have caused the problem

     If you use TIMER0 with the SoftDevice active then you will definitely crash the SoftDevice, see System on Chip resource requirements -> Hardware peripherals.


  • thanks for your response..

    yeah I found it somewhere in the forum so I changed it to use the timer_instance(1) although I didn't disable timer_instance(0) in the sdk_config.h because  in that thread, the engineer said that only changing the main.c would be sufficient...

    Is it true?

  • I've asked the SooftDevice team what assert that is, waiting for a reply.

    What function call is on line 1074 og main.c?

  • Thank you Haakonsh,

    I have posted the main.c in my previous replies, here is the code around line 1074, its actually an error process call function and before that, we have conn_param_init()

        conn_params_init();
    			//mig//
    			printf("\r\n  .UART + PWM Periph \r\n");
    	    printf("\r\nUART started.\r\n");
    
    //	    uint32_t err_code = NRF_LOG_INIT(NULL);
        APP_ERROR_CHECK(err_code);   --->1074

    And something more, I have checked the link You sent about hardware restrictions when utilizing softdevice, it says even "NVIC"  module is not available! that may be the root of my problem, because I didnt change anything about it when adding the "SAADC" example to the BLE example. seems like there are many issues for joining non-BLE examples to a BLE example...

  • Neuro_Rouh said:
    I have posted the main.c in my previous replies, here is the code around line 1074, its actually an error process call function and before that, we have conn_param_init()

    But what function assigned the error code that was sent to APP_ERROR_CHECK()?
     

    Neuro_Rouh said:
    And something more, I have checked the link You sent about hardware restrictions when utilizing softdevice, it says even "NVIC"  module is not available! that may be the root of my problem, because I didnt change anything about it when adding the "SAADC" example to the BLE example. seems like there are many issues for joining non-BLE examples to a BLE example...

    That won't be a problem as long as the SAADC driver is configured with an interrupt priority of 6 or 7 (default is 6 I think). So if you've just merged the SAADC example, with the same sdk_config.h settings then you're fine. 

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