RE: Reset chip on write

Ole Morten — Tue, 08 Oct 2013 07:17:54 GMT

The sd_nvic_SystemReset() method is defined in nrf_soc.h, so if you want to use it from ble_hrs.c, you have to include that header file in the top of the source code file.

To know which characteristic was written, you must look at the handle of the write event structure. This could for example look something like this, although it doesn't make much sense as is:


    ble_gatts_evt_write_t * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write;
    
    if ((p_evt_write->handle == p_your_service->your_characteristic.value_handle) &&
             (p_evt_write->data[0] == YOUR_SERVICE_RESET_COMMAND))
    {
        sd_nvic_SystemReset();
    }

The handle used here should be the handle returned in the last parameter of sd_ble_gatts_characteristic_add().

Edit: I also edited your question title to make it more clear what it is about. For information on how to modify the bootloader as you want, take a look at this question.