BLE DTM

Table of Contents

• DTM - ble_dtm_init
  • Function packet format
  • Response packet format

DTM - ble_dtm_init

Function packet format

Frame format encoding of the ble_dtm_init packet.

The ble_dtm_init is encoded without an operation code byte. The packet contains only DTM UART configuration (TX pin, RX pin, and baud rate).

• DTM UART transmit pin - app_uart_stream_comm_params_t::tx_pin_no.
• DTM UART receive pin - app_uart_stream_comm_params_t::rx_pin_no.
• DTM UART baud rate - app_uart_stream_baud_rate_t.

The order of the encoding is:

Length	Parameter	Value
1 byte	UART TX	DTM UART transmit pin.
1 byte	UART RX	DTM UART receive pin.
1 byte	UART Baudrate	DTM UART baud rate.

Figure 1: Encoding of ble_dtm_init.

Response packet format

Frame format encoding of the ble_dtm_init response packet:

Length	Parameter	Value
4 bytes	nRF Error Code	see ble_dtm_init

Figure 2: Packet format for ble_dtm_init response.