mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
65 lines
2.1 KiB
Markdown
65 lines
2.1 KiB
Markdown
| Supported Targets | ESP32 |
|
|
| ----------------- | ----- |
|
|
|
|
ESP-IDF UART HCI Controller
|
|
===========================
|
|
|
|
This is a btdm controller use UART as HCI IO. This require the UART device support RTS/CTS mandatory.
|
|
|
|
It can do the configuration of UART number and UART baudrate by menuconfig.
|
|
|
|
## How to use example
|
|
|
|
### Hardware Required
|
|
|
|
This example should be able to run on any commonly available ESP32 development board. To connect UART to PC, another board such as ESP_Test Board or FT232 USB UART board is usually needed.
|
|
|
|
In this example, three UARTs are used:
|
|
|
|
- UART0 is used as normal output or by IDF monitor
|
|
|
|
- UART1 or UART2 is used to convey HCI messages
|
|
|
|
RTS and CTS lines of UART1 or UART2 are required. Pins 5, 18, 23, 19 are used as TxD, RxD, CTS, RTS PINs of UART1 or UART2, respectively.
|
|
|
|
In a frequently-used scenario, if ESP_Test Board is used, connect the TX0, RX0, RTS0, CTS0 and GND of ESP_Test Board to ESP32 UART1 or UART2 PINs, and Attach ESP_Test board to the host PC.
|
|
|
|
### Configure the project
|
|
|
|
```
|
|
idf.py menuconfig
|
|
```
|
|
|
|
- UART number can be configured in `HCI UART(H4) Options > UART Number for HCI`
|
|
|
|
- UART baudrate can be configured in `HCI UART(H4) Options > UART Baudrate for HCI`
|
|
|
|
### Build and Flash
|
|
|
|
Build the project and flash it to the board, then run monitor tool to view serial output:
|
|
|
|
```
|
|
idf.py -p PORT flash monitor
|
|
```
|
|
|
|
(Replace PORT with the name of the serial port to use.)
|
|
|
|
(To exit the serial monitor, type ``Ctrl-]``.)
|
|
|
|
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
|
|
|
|
## Example Output
|
|
|
|
The example resets the HCI UART transport and enable Bluetooth Controller.
|
|
|
|
```
|
|
I (442) CONTROLLER_UART_HCI: HCI UART1 Pin select: TX 5, RX 18, CTS 23, RTS 19
|
|
I (442) BTDM_INIT: BT controller compile version [078d492]
|
|
I (452) system_api: Base MAC address is not set
|
|
I (452) system_api: read default base MAC address from EFUSE
|
|
I (462) phy_init: phy_version 4670,719f9f6,Feb 18 2021,17:07:07
|
|
```
|
|
|
|
After these output occurs, HCI messages can be commnunicated over UART1 or UART2. (UART1 in this example)
|
|
|
|
## Troubleshooting |