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Two Serial Instances with BLE Buttonless DFU Template

Hi I am managing to initialize a serial instance using uart0 within the BLE Buttonless DFU Template. However when I carry out a similar process for uart1 I get the following error:

<error> app: ERROR 3735928559 [Unknown error code] at ...\integration\nrfx\legacy\nrf_drv_uart.c:118

  • What version of the SDK do you use?

    If you want to use two UARTs, I suggest that you take a look at the SDK16.0.0\examples\peripheral\serial_uartes.

    Now, since I don't know what SDK version you are using, I can only guess what it says on line 118 in nrf_drv_uart.c, but my guess is:

    ASSERT(p_config->use_easy_dma);

    So do you use easy_dma? If not, try to do that. Again, I don't know how you have tried to initialize the uarts, but you can check in the serial_uartes example how to do it. 

    BR,

    Edvin

  • Hi Edvin I am using SDK16 and I did follow the serial_uartes example.

    I am using the polling mode since IRQ or DMA modes return the following compilation error: region 'UNPLACED_SECTIONS' overflowed by 40 bytes. and '.nrf_queue' will not fit in region 'UNPLACED_SECTIONS'.

    Attached please find a copy of my main.c

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     *
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    /** @example examples/ble_peripheral/ble_app_buttonless_dfu
     *
     * @brief Secure DFU Buttonless Service Application main file.
     *
     * This file contains the source code for a sample application using the proprietary
     * Secure DFU Buttonless Service. This is a template application that can be modified
     * to your needs. To extend the functionality of this application, please find
     * locations where the comment "// YOUR_JOB:" is present and read the comments.
     */
    
    #include <stdbool.h>
    #include <stdint.h>
    #include <string.h>
    
    #include "nrf_dfu_ble_svci_bond_sharing.h"
    #include "nrf_svci_async_function.h"
    #include "nrf_svci_async_handler.h"
    
    #include "nordic_common.h"
    #include "nrf.h"
    #include "app_error.h"
    #include "ble.h"
    #include "ble_hci.h"
    #include "ble_srv_common.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 "app_timer.h"
    #include "peer_manager.h"
    #include "peer_manager_handler.h"
    #include "bsp_btn_ble.h"
    #include "ble_hci.h"
    #include "ble_advdata.h"
    #include "ble_advertising.h"
    #include "ble_conn_state.h"
    #include "ble_dfu.h"
    #include "nrf_ble_gatt.h"
    #include "nrf_ble_qwr.h"
    #include "fds.h"
    #include "nrf_pwr_mgmt.h"
    #include "nrf_drv_clock.h"
    #include "nrf_power.h"
    #include "nrf_log.h"
    #include "nrf_log_ctrl.h"
    #include "nrf_log_default_backends.h"
    #include "nrf_bootloader_info.h"
    
    #include "nrf_serial.h"
    #include "nrf_delay.h"
    #include "nrf_gpio.h"
    
    #define DEVICE_NAME                     "Parking Hero App"                         /**< Name of device. Will be included in the advertising data. */
    #define MANUFACTURER_NAME               "IoT Solutions"                         /**< Manufacturer. Will be passed to Device Information Service. */
    #define APP_ADV_INTERVAL                8000                                         /**< The advertising interval (in units of 0.625 ms. This value corresponds to 5 s). */
    #define APP_ADV_DURATION                0                                       /**< The advertising duration (180 seconds) in units of 10 milliseconds. When set to 0, module will advertise indefinitely*/
    
    #define APP_BLE_OBSERVER_PRIO           3                                           /**< Application's BLE observer priority. You shouldn't need to modify this value. */
    #define APP_BLE_CONN_CFG_TAG            1                                           /**< A tag identifying the SoftDevice BLE configuration. */
    
    #define MIN_CONN_INTERVAL               MSEC_TO_UNITS(100, UNIT_1_25_MS)            /**< Minimum acceptable connection interval (0.1 seconds). */
    #define MAX_CONN_INTERVAL               MSEC_TO_UNITS(200, UNIT_1_25_MS)            /**< Maximum acceptable connection interval (0.2 second). */
    #define SLAVE_LATENCY                   0                                           /**< Slave latency. */
    #define CONN_SUP_TIMEOUT                MSEC_TO_UNITS(4000, UNIT_10_MS)             /**< Connection supervisory timeout (4 seconds). */
    
    #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 SEC_PARAM_BOND                  1                                           /**< Perform bonding. */
    #define SEC_PARAM_MITM                  0                                           /**< Man In The Middle protection not required. */
    #define SEC_PARAM_LESC                  0                                           /**< LE Secure Connections not enabled. */
    #define SEC_PARAM_KEYPRESS              0                                           /**< Keypress notifications not enabled. */
    #define SEC_PARAM_IO_CAPABILITIES       BLE_GAP_IO_CAPS_NONE                        /**< No I/O capabilities. */
    #define SEC_PARAM_OOB                   0                                           /**< Out Of Band data not available. */
    #define SEC_PARAM_MIN_KEY_SIZE          7                                           /**< Minimum encryption key size. */
    #define SEC_PARAM_MAX_KEY_SIZE          16                                          /**< Maximum encryption key size. */
    
    #define DEAD_BEEF                       0xDEADBEEF                                  /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
    
    
    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 void advertising_start(bool erase_bonds);                                    /**< Forward declaration of advertising start function */
    
    // YOUR_JOB: Use UUIDs for service(s) used in your application.
    static ble_uuid_t m_adv_uuids[] = {{BLE_UUID_DEVICE_INFORMATION_SERVICE, BLE_UUID_TYPE_BLE}};
    
    /*SERIAL/UART DEFINITIONS*/
    
    /*UART Debug Pins*/
    #define UART0_TX 14
    #define UART0_RX 16
    
    /*UART Sigfox Pins*/
    #define UART1_TX 6
    #define UART1_RX 4
    
    NRF_SERIAL_DRV_UART_CONFIG_DEF(m_uarte0_drv_config,
                          UART0_RX, UART0_TX,
                          NULL, NULL,
                          NRF_UART_HWFC_DISABLED, NRF_UART_PARITY_EXCLUDED,
                          NRF_UART_BAUDRATE_115200,
                          UART_DEFAULT_CONFIG_IRQ_PRIORITY);
    
    NRF_SERIAL_DRV_UART_CONFIG_DEF(m_uarte1_drv_config,
                          UART1_RX, UART1_TX,
                          NULL, NULL,
                          NRF_UART_HWFC_DISABLED, NRF_UART_PARITY_EXCLUDED,
                          NRF_UART_BAUDRATE_115200,
                          UART_DEFAULT_CONFIG_IRQ_PRIORITY);
    
    /*#define SERIAL_FIFO_TX_SIZE 32
    #define SERIAL_FIFO_RX_SIZE 32
    
    NRF_SERIAL_QUEUES_DEF(serial_queues, SERIAL_FIFO_TX_SIZE, SERIAL_FIFO_RX_SIZE);
    
    
    #define SERIAL_BUFF_TX_SIZE 1
    #define SERIAL_BUFF_RX_SIZE 1
    
    NRF_SERIAL_BUFFERS_DEF(serial_buffs, SERIAL_BUFF_TX_SIZE, SERIAL_BUFF_RX_SIZE);*/
    
    NRF_SERIAL_CONFIG_DEF(serial0_config, NRF_SERIAL_MODE_POLLING, NULL, NULL, NULL, NULL);
    NRF_SERIAL_CONFIG_DEF(serial1_config, NRF_SERIAL_MODE_POLLING, NULL, NULL, NULL, NULL);
    
    /*NRF_SERIAL_CONFIG_DEF(serial0_config, NRF_SERIAL_MODE_IRQ,
                          &serial_queues, &serial_buffs, NULL, NULL);*/
    
    NRF_SERIAL_UART_DEF(serial0_uarte, 0);
    NRF_SERIAL_UART_DEF(serial1_uarte, 1);
    
    /*TIMERS*/
    
    APP_TIMER_DEF(sensor_polling_timer);  //Timer which polls sensors every 'x' amount of time
    
    /*Timeout Handler for sensor_polling_timer*/
    void sensor_polling_timer_timeout_handler(){
      //Do Something here
      NRF_LOG_INFO("A second has passed");
    
      // UART Write
      char command[32] = "AT$CW=868130000,1,15";
      char nl = '\n';
      nrf_serial_write(&serial0_uarte, &command, strlen(command), NULL, 0);
      nrf_serial_write(&serial0_uarte, &nl, sizeof(nl), NULL, 0);
    
      /*char command1[32] = "SIG";
      nrf_serial_write(&serial1_uarte, &command1, strlen(command1), NULL, 0);
      nrf_serial_write(&serial1_uarte, &nl, sizeof(nl), NULL, 0);*/
    
      //UART Read
      /*char b;
      ret_code_t ret = nrf_serial_read(&serial0_uarte, &b, sizeof(b), NULL, 0);
      if (ret == NRF_SUCCESS)
      {
          nrf_serial_write(&serial0_uarte, &command, strlen(command), NULL, 0);
          nrf_serial_write(&serial0_uarte, &nl, sizeof(nl), NULL, 0);
      }*/
    }
    
    /**@brief Handler for shutdown preparation.
     *
     * @details During shutdown procedures, this function will be called at a 1 second interval
     *          untill the function returns true. When the function returns true, it means that the
     *          app is ready to reset to DFU mode.
     *
     * @param[in]   event   Power manager event.
     *
     * @retval  True if shutdown is allowed by this power manager handler, otherwise false.
     */
    static bool app_shutdown_handler(nrf_pwr_mgmt_evt_t event)
    {
        switch (event)
        {
            case NRF_PWR_MGMT_EVT_PREPARE_DFU:
                NRF_LOG_INFO("Power management wants to reset to DFU mode.");
                // YOUR_JOB: Get ready to reset into DFU mode
                //
                // If you aren't finished with any ongoing tasks, return "false" to
                // signal to the system that reset is impossible at this stage.
                //
                // Here is an example using a variable to delay resetting the device.
                //
                // if (!m_ready_for_reset)
                // {
                //      return false;
                // }
                // else
                //{
                //
                //    // Device ready to enter
                //    uint32_t err_code;
                //    err_code = sd_softdevice_disable();
                //    APP_ERROR_CHECK(err_code);
                //    err_code = app_timer_stop_all();
                //    APP_ERROR_CHECK(err_code);
                //}
                break;
    
            default:
                // YOUR_JOB: Implement any of the other events available from the power management module:
                //      -NRF_PWR_MGMT_EVT_PREPARE_SYSOFF
                //      -NRF_PWR_MGMT_EVT_PREPARE_WAKEUP
                //      -NRF_PWR_MGMT_EVT_PREPARE_RESET
                return true;
        }
    
        NRF_LOG_INFO("Power management allowed to reset to DFU mode.");
        return true;
    }
    
    //lint -esym(528, m_app_shutdown_handler)
    /**@brief Register application shutdown handler with priority 0.
     */
    NRF_PWR_MGMT_HANDLER_REGISTER(app_shutdown_handler, 0);
    
    
    static void buttonless_dfu_sdh_state_observer(nrf_sdh_state_evt_t state, void * p_context)
    {
        if (state == NRF_SDH_EVT_STATE_DISABLED)
        {
            // Softdevice was disabled before going into reset. Inform bootloader to skip CRC on next boot.
            nrf_power_gpregret2_set(BOOTLOADER_DFU_SKIP_CRC);
    
            //Go to system off.
            nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF);
        }
    }
    
    /* nrf_sdh state observer. */
    NRF_SDH_STATE_OBSERVER(m_buttonless_dfu_state_obs, 0) =
    {
        .handler = buttonless_dfu_sdh_state_observer,
    };
    
    
    static void advertising_config_get(ble_adv_modes_config_t * p_config)
    {
        memset(p_config, 0, sizeof(ble_adv_modes_config_t));
    
        p_config->ble_adv_fast_enabled  = true;
        p_config->ble_adv_fast_interval = APP_ADV_INTERVAL;
        p_config->ble_adv_fast_timeout  = APP_ADV_DURATION;
    }
    
    
    static void disconnect(uint16_t conn_handle, void * p_context)
    {
        UNUSED_PARAMETER(p_context);
    
        ret_code_t err_code = sd_ble_gap_disconnect(conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
        if (err_code != NRF_SUCCESS)
        {
            NRF_LOG_WARNING("Failed to disconnect connection. Connection handle: %d Error: %d", conn_handle, err_code);
        }
        else
        {
            NRF_LOG_DEBUG("Disconnected connection handle %d", conn_handle);
        }
    }
    
    
    
    // YOUR_JOB: Update this code if you want to do anything given a DFU event (optional).
    /**@brief Function for handling dfu events from the Buttonless Secure DFU service
     *
     * @param[in]   event   Event from the Buttonless Secure DFU service.
     */
    static void ble_dfu_evt_handler(ble_dfu_buttonless_evt_type_t event)
    {
        switch (event)
        {
            case BLE_DFU_EVT_BOOTLOADER_ENTER_PREPARE:
            {
                NRF_LOG_INFO("Device is preparing to enter bootloader mode.");
    
                // Prevent device from advertising on disconnect.
                ble_adv_modes_config_t config;
                advertising_config_get(&config);
                config.ble_adv_on_disconnect_disabled = true;
                ble_advertising_modes_config_set(&m_advertising, &config);
    
                // Disconnect all other bonded devices that currently are connected.
                // This is required to receive a service changed indication
                // on bootup after a successful (or aborted) Device Firmware Update.
                uint32_t conn_count = ble_conn_state_for_each_connected(disconnect, NULL);
                NRF_LOG_INFO("Disconnected %d links.", conn_count);
                break;
            }
    
            case BLE_DFU_EVT_BOOTLOADER_ENTER:
                // YOUR_JOB: Write app-specific unwritten data to FLASH, control finalization of this
                //           by delaying reset by reporting false in app_shutdown_handler
                NRF_LOG_INFO("Device will enter bootloader mode.");
                break;
    
            case BLE_DFU_EVT_BOOTLOADER_ENTER_FAILED:
                NRF_LOG_ERROR("Request to enter bootloader mode failed asynchroneously.");
                // YOUR_JOB: Take corrective measures to resolve the issue
                //           like calling APP_ERROR_CHECK to reset the device.
                break;
    
            case BLE_DFU_EVT_RESPONSE_SEND_ERROR:
                NRF_LOG_ERROR("Request to send a response to client failed.");
                // YOUR_JOB: Take corrective measures to resolve the issue
                //           like calling APP_ERROR_CHECK to reset the device.
                APP_ERROR_CHECK(false);
                break;
    
            default:
                NRF_LOG_ERROR("Unknown event from ble_dfu_buttonless.");
                break;
        }
    }
    
    
    /**@brief Callback function for asserts in the SoftDevice.
     *
     * @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 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)
    {
        pm_handler_on_pm_evt(p_evt);
        pm_handler_flash_clean(p_evt);
    }
    
    
    /**@brief Function for the Timer initialization.
     *
     * @details Initializes the timer module. This creates and starts application timers.
     */
    static void timers_init(void)
    {
    
        // Initialize timer module.
        uint32_t err_code = app_timer_init();
        APP_ERROR_CHECK(err_code);
    
        // Create timers.
    
        /* YOUR_JOB: Create any timers to be used by the application.
                     Below is an example of how to create a timer.
                     For every new timer needed, increase the value of the macro APP_TIMER_MAX_TIMERS by
                     one.
           uint32_t err_code;
           err_code = app_timer_create(&m_app_timer_id, APP_TIMER_MODE_REPEATED, timer_timeout_handler);
           APP_ERROR_CHECK(err_code); */
    
        /*Sensor Polling Timer - used APP_TIMER_DEF as declaration*/
        err_code = app_timer_create(&sensor_polling_timer, APP_TIMER_MODE_REPEATED, sensor_polling_timer_timeout_handler);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@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)
    {
        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);
    
        //YOUR_JOB: Use an appearance value matching the application's use case.
        err_code = sd_ble_gap_appearance_set(BLE_APPEARANCE_UNKNOWN);
        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 YYY Service events.
     * YOUR_JOB implement a service handler function depending on the event the service you are using can generate
     *
     * @details This function will be called for all YY Service events which are passed to
     *          the application.
     *
     * @param[in]   p_yy_service   YY Service structure.
     * @param[in]   p_evt          Event received from the YY Service.
     *
     *
       static void on_yys_evt(ble_yy_service_t     * p_yy_service,
                              ble_yy_service_evt_t * p_evt)
       {
        switch (p_evt->evt_type)
        {
            case BLE_YY_NAME_EVT_WRITE:
                APPL_LOG("[APPL]: charact written with value %s. ", p_evt->params.char_xx.value.p_str);
                break;
    
            default:
                // No implementation needed.
                break;
        }
       }*/
    
    
    /**@brief Function for initializing services that will be used by the application.
     */
    static void services_init(void)
    {
        uint32_t                  err_code;
        nrf_ble_qwr_init_t        qwr_init  = {0};
        ble_dfu_buttonless_init_t dfus_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);
    
        dfus_init.evt_handler = ble_dfu_evt_handler;
    
        err_code = ble_dfu_buttonless_init(&dfus_init);
        APP_ERROR_CHECK(err_code);
    
        /* YOUR_JOB: Add code to initialize the services used by the application.
           uint32_t                           err_code;
           ble_xxs_init_t                     xxs_init;
           ble_yys_init_t                     yys_init;
    
           // Initialize XXX Service.
           memset(&xxs_init, 0, sizeof(xxs_init));
    
           xxs_init.evt_handler                = NULL;
           xxs_init.is_xxx_notify_supported    = true;
           xxs_init.ble_xx_initial_value.level = 100;
    
           err_code = ble_bas_init(&m_xxs, &xxs_init);
           APP_ERROR_CHECK(err_code);
    
           // Initialize YYY Service.
           memset(&yys_init, 0, sizeof(yys_init));
           yys_init.evt_handler                  = on_yys_evt;
           yys_init.ble_yy_initial_value.counter = 0;
    
           err_code = ble_yy_service_init(&yys_init, &yy_init);
           APP_ERROR_CHECK(err_code);
         */
    }
    
    
    /**@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)
    {
        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 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)
    {
        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 starting timers.
     */
    static void application_timers_start(void)
    {
        /* YOUR_JOB: Start your timers. below is an example of how to start a timer.
           uint32_t err_code;
           err_code = app_timer_start(m_app_timer_id, TIMER_INTERVAL, NULL);
           APP_ERROR_CHECK(err_code); */
    
        /*Start sensor_polling_timer - intervals of 1000ms*/
        uint32_t err_code;
        err_code = app_timer_start(sensor_polling_timer, APP_TIMER_TICKS(5000), NULL);
        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);
    
        //Disable SoftDevice. It is required to be able to write to GPREGRET2 register (SoftDevice API blocks it).
        //GPREGRET2 register holds the information about skipping CRC check on next boot.
        err_code = nrf_sdh_disable_request();
        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:
                NRF_LOG_INFO("Fast Advertising.");
                err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
                APP_ERROR_CHECK(err_code);
                break;
    
            case BLE_ADV_EVT_IDLE:
                NRF_LOG_INFO("Sleep Mode.");
                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 = NRF_SUCCESS;
    
        switch (p_ble_evt->header.evt_id)
        {
            case BLE_GAP_EVT_DISCONNECTED:
                // LED indication will be changed when advertising starts.
                break;
    
            case BLE_GAP_EVT_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_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_GATTC_EVT_TIMEOUT:
                // Disconnect on GATT Client timeout event.
                NRF_LOG_DEBUG("GATT Client Timeout.");
                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.
                NRF_LOG_DEBUG("GATT Server Timeout.");
                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 initializing the BLE stack.
     *
     * @details 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);
    
        NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
    }
    
    
    /**@brief Function for the Peer Manager initialization.
     */
    static void peer_manager_init()
    {
        ble_gap_sec_params_t sec_param;
        ret_code_t           err_code;
    
        err_code = pm_init();
        APP_ERROR_CHECK(err_code);
    
        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;
    
        err_code = pm_sec_params_set(&sec_param);
        APP_ERROR_CHECK(err_code);
    
        err_code = pm_register(pm_evt_handler);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /** @brief Clear bonding information from persistent storage.
     */
    static void delete_bonds(void)
    {
        ret_code_t err_code;
    
        NRF_LOG_INFO("Erase bonds!");
    
        err_code = pm_peers_delete();
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@brief Function for handling events from the BSP module.
     *
     * @param[in]   event   Event generated when button is pressed.
     */
    static void bsp_event_handler(bsp_event_t event)
    {
        uint32_t err_code;
    
        switch (event)
        {
            case BSP_EVENT_SLEEP:
                sleep_mode_enter();
                break; // BSP_EVENT_SLEEP
    
            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; // BSP_EVENT_DISCONNECT
    
            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; // BSP_EVENT_KEY_0
    
            default:
                break;
        }
    }
    
    
    /**@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_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;
    
        advertising_config_get(&init.config);
    
        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)
    {
        uint32_t err_code;
        bsp_event_t startup_event;
    
        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 the Power manager.
     */
    static void log_init(void)
    {
        uint32_t err_code = NRF_LOG_INIT(NULL);
        APP_ERROR_CHECK(err_code);
    
        NRF_LOG_DEFAULT_BACKENDS_INIT();
    }
    
    
    /**@brief   Function for initializing the GATT module.
     * @details The GATT module handles ATT_MTU and Data Length update procedures automatically.
     */
    static void gatt_init(void)
    {
        ret_code_t err_code = nrf_ble_gatt_init(&m_gatt, NULL);
        APP_ERROR_CHECK(err_code);
    }
    
    
    /**@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
        {
            uint32_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
            APP_ERROR_CHECK(err_code);
    
            NRF_LOG_DEBUG("advertising is started");
        }
    }
    
    static void power_management_init(void)
    {
        uint32_t 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 application main entry.
     */
    int main(void)
    {
        bool erase_bonds;
        ret_code_t err_code;
    
        log_init();
    
        // Initialize the async SVCI interface to bootloader before any interrupts are enabled.
        err_code = ble_dfu_buttonless_async_svci_init();
        APP_ERROR_CHECK(err_code);
    
        timers_init();
        power_management_init();
        buttons_leds_init(&erase_bonds);
        ble_stack_init();
        peer_manager_init();
        gap_params_init();
        gatt_init();
        advertising_init();
        services_init();
        conn_params_init();
    
        // UART Init
        nrf_serial_init(&serial0_uarte, &m_uarte0_drv_config, &serial0_config);
        nrf_serial_init(&serial1_uarte, &m_uarte1_drv_config, &serial1_config);
        /*err_code = nrf_serial_init(&serial1_uarte, &m_uarte1_drv_config, &serial1_config);
        APP_ERROR_CHECK(err_code);*/
    
        NRF_LOG_INFO("Buttonless DFU Application started.");
    
        // Start execution.
        application_timers_start();
        advertising_start(erase_bonds);
    
        // Enter main loop.
        for (;;)
        {
            idle_state_handle();
        }
    }
    
    /**
     * @}
     */
    

  • Does the unmodified serial_uartes example work for you, then?

    I don't know what the unplaced sections error means. Does it give any more information? The main.c file alone will not be enough to reproduce though. I would need your project files, and sdk_config.h.

    What did you add to the project when the UNPLACED_SECTIONS compilation error occured?

    BR,

    Edvin

  • The unmodified example does work, but it alone is not enough to integrate with other projects. I was just adding the serial_uartes examples with DMA to the ble example when the error happened.

  • Ok. Is it still the same error? nrf_drv_uart.c line 188? Because that suggests that the UART isn't using DMA. How did you enable (or not) DMA? What does your sdk_config.h file look like?

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