Retrieve characteristic value

[André]

Hi, I'm trying to controll the port of my nRF52832 by writing to a characteristic value. So far everything works fine but I'm unable to get the value of my characteristic. I tried using the 

sd_ble_gatts_value_get() function but didn't manage to get it working. Can someone give me some advise on how to solve my problem? I'm using SDK5 v11 and my programm is based on the this example: https://devzone.nordicsemi.com/tutorials/b/bluetooth-low-energy/posts/ble-characteristics-a-beginners-tutorial 

Thanks for your time!

Regards André

[André]

I figured it out. Using this code it finally worked:

uint8_t testStore;
ble_gatts_value_t testStruct;

testStruct.p_value = &testStore;
testStruct.len = 4;
testStruct.offset = 0;

sd_ble_gatts_value_get(BLE_CONN_HANDLE_INVALID, 0x000E, &testStruct);

sd_ble_gatts_value_set(BLE_CONN_HANDLE_INVALID, 0x0011, &testStruct);

The problem was that I didn't initialize the values in the testStruct correctly.