HCI Sample #

Overview #

HCI, as the Host Controller Interface, is a crucial component of the Bluetooth protocol stack. This interface lies within the hardware section of the Bluetooth communication module, providing a standardized communication mechanism between the host and controller elements of a Bluetooth device.

Hardware Requirements #

Configuration #

#define EXT_PA 0 ///< 0: diable external PA, 1: enable external PA

Define if use PA control. 0: diable external PA, 1: enable external PA

#define BIAS_PORT 1 ///< external PA bias port
#define BIAS_PIN 3  ///< external PA bias pin

Define the Bias pin. If don’t use Bias pin, set it to 0xff

#define TX_EN_PORT 1 ///< external PA TX EN port
#define TX_EN_PIN  4 ///< external PA TX EN pin

Define the Tx_en pin.

#define RX_EN_PORT 2 ///< external PA RX EN port
#define RX_EN_PIN  3 ///< external PA RX EN pin

Define the Rx_en pin.

Building #

To build the sample with keil, follow the steps listed on the quick start page in the IN6xxE of Inplay Doc. You may be able to solve questions on that webpage.

Debug #

We can enter command on GPIO_2_7, and get the status on GPIO_2_1. **Remember to set hex send and receive when testing HCI command.**The following are samples:

• command sent: 01030c00

• status received: 04 0E 04 01 03 0C 00

More information may be found in debug guide page. More information and command can be found in HCI Command.

Test Steps #

1. Open Keil and set EXT_PA to be 1 if needed, download proj_ate_test_hci_no_os.
2. Press reset button and observe the text “main start” appear in the log.
3. Send HCI command and we can get status on UART1.