Crash when writing > 20 bytes (from Android)

[Roger Clark]

Hi,

I'm trying to write more than 20 bytes to a custom characteristic, from Android (Cordova BLE Central), but this completely crashes my App

APP_ERROR:ERROR:Fatal

I'm using SDK 12.1 App Template, plus the LED & Button example service LBS

I set the LED (Write) characteristic to have a max size of 256 like this

   attr_md.vloc       = BLE_GATTS_VLOC_STACK;
    attr_md.rd_auth    = 0;
    attr_md.wr_auth    = 0;
    attr_md.vlen       = 0;// variable length set to false (disabled)
    
    memset(&attr_char_value, 0, sizeof(attr_char_value));

    attr_char_value.p_uuid       = &ble_uuid;
    attr_char_value.p_attr_md    = &attr_md;
    attr_char_value.init_len     = sizeof(uint8_t);
    attr_char_value.init_offs    = 0;
    attr_char_value.max_len      = 256;//sizeof(uint16_t);
    attr_char_value.p_value      = NULL;

Do I need to increase some buffer size so I can send more than 20 bytes.

BTW. I am using the nRF51822QFAA (16k) and have the IRAM setting at 0x20001FE8

But perhaps I need to give the SD more RAM ??

[Roger Clark]

The code seems to reboot when it gets this error, and I dont know where the error actually occurs.

It only seems to happen with my custom service in my ble_app_template code.

I tried writing too many bytes to the Link Loss service write characteristic example and it was fine.

So my next step is to use the LLS in my code instead of my custom service, and determine if this is an issue with my main code or my custom service.