RE: obtain GATT response code in Android application

goldwake — Thu, 23 May 2019 01:46:54 GMT

I've noticed that the gatt status code is truncated too. I made a post about it on the devzone forum

RE: obtain GATT response code in Android application

Sigurd — Wed, 09 Jan 2019 09:44:59 GMT

Hi,

I see that you have the following in your code:

static final int BLE_GATT_STATUS_ATTERR_APP_BEGIN = 0x80;
static final int BLE_GATT_STATUS_ATTERR_APP_END = 0x9f;

These values does not correspond to how they are defined in ble_gatt.h, the correct values are:

#define BLE_GATT_STATUS_ATTERR_APP_BEGIN                  0x0180  /**< ATT Error: Application range begin. */
#define BLE_GATT_STATUS_ATTERR_APP_END                    0x019F  /**< ATT Error: Application range end. */

But you are saying that the '1' /MSB is truncated on the android side?

How about adding back the MSB in the callback? (add a test if the callback is for your custom characteristic?)

Another option could maybe be to use e.g. BLE_GATT_STATUS_ATTERR_RFU_RANGE3_BEGIN/END instead.