How to store the received data from ble nus into flash memory

RE: How to store the received data from ble nus into flash memory

Simon — Wed, 17 Feb 2021 09:35:43 GMT

Could you open a new ticket and ask the question there?

Best regards,

Simon

RE: How to store the received data from ble nus into flash memory

Jaydev Borkar — Wed, 17 Feb 2021 05:06:28 GMT

Hi, I am also facing the same issue. The data is being received in p_data, but I am unable to write the received data to flash memory. I have tried using fds and fstorage. PFA the main.c file below. This is a snippet of the ble_data_handler and int_main().

char data[100];
uint32_t address=0x60000;
static void nus_data_handler(ble_nus_evt_t * p_evt)
{
    //ret_code_t err_code;
    app_uart_flush();
    if (p_evt->type == BLE_NUS_EVT_RX_DATA && p_evt->params.rx_data.length>0)
    {
        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
            {
                data[i]=p_evt->params.rx_data.p_data[i];
                err_code = nrf_fstorage_write(&fstorage, address, p_evt->params.rx_data.p_data[i], p_evt->params.rx_data.length, NULL);
                //APP_ERROR_CHECK(err_code);
                address++;
                //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);
        //}
    }
    printf("The length of data is: %d\n\r",p_evt->params.rx_data.length);
    ble_data_receive=true;
    printf("BLE Data received and bool changed to true\n\r");
}


int main(void)
{
////////////////////////////// F STORAGE CODE//////////////////////////

    ret_code_t err_code;
    nrf_fstorage_api_t * p_fs_api;
    p_fs_api = &nrf_fstorage_sd;
    err_code = nrf_fstorage_init(&fstorage, p_fs_api, NULL);
    APP_ERROR_CHECK(err_code);
 
//////////////////////////////// BLE UART CODE/////////////////////////    
    bool erase_bonds;
    // Initialize.
    uart_init();
    log_init();
    //cli_init();
    timer_init();
    power_management_init();
    ble_stack_init();
    gap_params_init();
    gatt_init();
    services_init();
    advertising_init();                         
    conn_params_init();
    advertising_start();
    //cli_start();
    // Enter main loop.
    for (;;)
    {
        idle_state_handle();
        if(ble_data_receive==true){
            const char sms[100]={"Hello we are speaking from sunlux technovations!"};
            printf("Commencing write operation\n\r");
            //err_code = nrf_fstorage_write(&fstorage, 0x60000, &data, 115, NULL);
            //APP_ERROR_CHECK(err_code);
            if(err_code==NRF_SUCCESS){
              printf("Write operation done!\n\r");
            }
            printf("Printing data here\n\r");
            printf(&data);
            //printf("Printing ends here\n\r");
            printf("The data in String is: %s\n\r",data);
            printf("The data pointer value is: %d\n\r",data);
            ble_data_receive=false;
            printf("BLE Data received and bool changed to false\n\r");
            //char a[100];uint32_t len=100;
            //printf("Reading flash\n\r");
            //ret_code_t rc;
            //rc=nrf_fstorage_read(&fstorage,0x200040D1,a,len);
            ////APP_ERROR_CHECK(rc);
            //printf("The data is: %s\n\r",a);
        }
        //cli_process();
    }
}

RE: How to store the received data from ble nus into flash memory

Simon — Tue, 07 Jan 2020 13:24:22 GMT

Could you upload your code (main.c) to this ticket? Then I can take a look at it and figure out what might cause the unwanted behavior. Click on Insert→Insert image/video/file→From→File Upload, then find main.c and click Ok.

RE: How to store the received data from ble nus into flash memory

ps_anu — Tue, 07 Jan 2020 13:07:39 GMT

yes now i am done, can please tell me how to read ? and print the read message

RE: How to store the received data from ble nus into flash memory

Simon — Tue, 07 Jan 2020 13:06:20 GMT

Could you upload main.c?

Best regards,

Simon

RE: How to store the received data from ble nus into flash memory

ps_anu — Mon, 06 Jan 2020 11:01:18 GMT

Now , BLE connection is stable ,but i am not receive any data in termite . BLE APP to termite is not working , data i am not receiving . but termite to BLE APP i am getting the data ..what will be issue ?please help me

RE: How to store the received data from ble nus into flash memory

Simon — Mon, 30 Dec 2019 10:30:56 GMT

Could you try to debug your project and see what function caused the error and what the error code is?

Best regards,

Simon

RE: How to store the received data from ble nus into flash memory

Simon — Mon, 30 Dec 2019 09:43:08 GMT

A huge portion of the support team is currently on Christmas vacation and you may experience delayed answers. Most of the staff will be back 6 of January 2020 and you can be sure to get an answer shortly after that.

Best regards,

Simon