Send Delayed Response to Bluetooth Read / Write Request

RE: Send Delayed Response to Bluetooth Read / Write Request

Andreas Poppe — Thu, 15 Feb 2018 13:11:29 GMT

Hello,

thanks for the repley.

I found the problem, it was within my software.

The BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST is called on each read / write and then my code accidently answered via the sd_ble_gatts_rw_authorize_reply call immediatly. It was not supposed to.

I fixed it by not calling sd_ble_gatts_rw_authorize_reply immediatly, but from another function later after reading/writeing the data to the I2C device.

regards

Andreas

RE: Send Delayed Response to Bluetooth Read / Write Request

Edvin — Thu, 15 Feb 2018 13:03:24 GMT

Hello Andreas,

You do not have to answer this at once. You can wait for the response from your I2C device before sending the confirmation.

You can see in this message sequence chart how to treat the BLE_GATTC_EVT_HVX. It does not say, but you can wait (for a reasonable amount of time). You just have to make sure that you use the correct conn_handle and handle when you use the sd_ble_gattc_hv_confirm() function, once you have received your response from the I2C device.

Best regards,

Edvin