Run time error

[Sangram singh]

I am facing one another problem basically i am  sending some AT command from central to peripheral but after some time its hang and wait app_erroc. c (__disable_irq();->while (loop);->__enable_irq();)  file or ses_startup_nrf52.s file(pls. find attaced file)4111.Image.docx

[Vidar Berg]

Hi,

I'd recommend you enable the HardFault handling library in your project. This will help us determine what triggered the hardfault exception in the first place. Just make sure the module is enabled in sdk_config.h and that the hardfault handler implementation is included in your build (\components\libraries\hardfault\nrf52\handler)

Best regards,

Vidar

[Sangram singh]

2845.ble_app_uart_c_263335+interval.rar

Pls. add in my project.

[Vidar Berg]

I will go over the project tomorrow and see if I can tune the configuration for you. But you will still run into the "no memory" error if you receive too much data, so it's not guaranteed that it will fix the problem.

[Sangram singh]

ok sir

[Sangram singh]

Awaiting of your feedback.

[Vidar Berg]

I know you are. I will let you know when I have had a chance to go over the configuration.

[Vidar Berg]

I suggest you try to increase the size of the Softdevice write queue to see if it may help. This will allow for more calls to ble_nus_c_string_send() before it will start returning NRF_ERROR_NO_MEM. If it doesn't, you will have to look at ways to improve the BLE throughput, reduce the number of calls to ble_nus_c_string_send(), or consider to drop data when you run out of buffers.

Code snippet: Increasing Softdevice TX Queue size for GATTC write commands

/**@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);

    ble_cfg_t ble_cfg;

    memset(&ble_cfg, 0, sizeof(ble_cfg));
    ble_cfg.conn_cfg.conn_cfg_tag = APP_BLE_CONN_CFG_TAG;
    ble_cfg.conn_cfg.params.gattc_conn_cfg.write_cmd_tx_queue_size = 30; // Number of packets in queue

    err_code = sd_ble_cfg_set(BLE_CONN_CFG_GATTC, &ble_cfg, 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);
}