sd_ble_gattc_write() sd_ble_gattc_write

[jiang]

Hi!

I use NRF52832 as the central, the protocol stack is SDK14.2.0, modified with ble_app_uart_c . I used three services, two of which need to turn on notifications. When my program runs to sd_ble_gattc_write() in ble_nus_c_tx_notif_enable(), I get a NRF_ERROR_BUSY error. I found this paragraph, "Only one write with response procedure can If the application tries to write with response while another write with response procedure is ongoing, the function call will return NRF_ERROR_BUSY. " But I don't know how to modify this program, can you help me?

[AndreasF]

Hi.

If you read the whole API @note, you can read that a BLE_GATTC_EVT_WRITE_RSP event will be issued as soon as you are finished with the first write response.

You can call sd_ble_gattc_write() again when you receive that event.

Best regards,

Andreas

[jiang]

Hello, Andreas, thank you for your answer!
I added case BLE_GATTC_EVT_WRITE_RSP in ble_evt_handler(): and ble_nus_c_tx_notif_enable() was called here, then my program will run normally, and all three services I use will work.
thank you!