Dynamic updating of serial number in device ID

RE: Dynamic updating of serial number in device ID

Ole Morten — Tue, 04 Feb 2014 16:50:23 GMT

Sorry, overlooked that part. I've edited my answer above to cover that as well. If you found that my reply answered your question, I'd also be happy if you could click the "Accept as answer" button below it, to clear up this question. :)

RE: Dynamic updating of serial number in device ID

Chris Gates — Tue, 04 Feb 2014 16:46:50 GMT

Ok, so that is the problem then.... as to the second half of my question, is there a good way to reset the 51822 from software?

RE: Dynamic updating of serial number in device ID

Ole Morten — Tue, 04 Feb 2014 10:38:28 GMT

I'm having a little trouble understanding this code snippet. To update an existing characteristic, you should make sure to use sd_ble_gatts_value_set(), which require you to have the handle of the characteristic you want to set. Without having tested, I'd therefore suggest a method something like this


uint32_t ble_dis_serial_num_update(char * serial_num_string, uint8_t length)
{
    return sd_ble_gatts_value_set(serial_num_handles.value_handle, 0, length, serial_num_string);
}

Also, you should be aware that you can't add a characteristic to a service if other services have been added in the mean time. Any attribute added will always be added to the last service added, no matter what you set the service_handle to in the sd_ble_gatts_characteristic_add() function. This is a limitation with the current GATT Table implementation in the S110.

Edit: To also answer the second part, you can use NVIC_SystemReset() or sd_nvic_SystemReset(), depending on whether the softdevice is enabled or not.