Read the write data in nrf connect app after immediate power ON

[manoj97]

Hello 

I'm using NRF connect the app to perform read and write on nrf52840 board SDK ver of 15.0.0.

 I can perform the write and read operations using nrf connect app, and that write data is stored in flash.

 My problem is,  I will write the data first and stop debug session and again makes connection with device nrf52840, Now I will directly perform read operation by pressing read in the nrf connect app. It showing nothing while reading.

Please give your inputs to fix these issues.

Thank you.

[Kenneth]

When you init the gatt services and characteristics, you can typically use .p_init_value to set the start value.

For instance you can find in ble_srv_common.c that the characteristic_add()-api check .p_init_value before calling sd_ble_gatts_characteristic_add().

    if (p_char_props->p_init_value != NULL)
    {
        attr_char_value.init_len  = p_char_props->init_len;
        attr_char_value.p_value   = p_char_props->p_init_value;
    }

[manoj97]

Thank you Kenneth it worked!