RE: related to app

Håkon Alseth — Thu, 19 Jun 2014 12:28:57 GMT

If I understand correctly, you want the central (phone) to be able to send data to the peripheral (nRF51822) and explicitly set it to run one out of two operations. Similar to setting a boolean flag. Please correct me if my understanding is incorrect.

I would recommend looking at this application note: www.nordicsemi.com/.../30114525

When sending this from the central to the peripheral, you will get a BLE_GATTS_EVT_WRITE event in on_ble_evt() function. You can then read out the data by adding another case:

case BLE_GATTS_EVT_WRITE:
{            
    ble_gatts_evt_write_t * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write;
    uint8_t buffer[MAX_RECEIVED_SIZE];
    if (p_evt_write->len == MY_DESIRED_LEN)
        /* do something with data, is located in p_evt_write->data*/
        
}