kopia lustrzana https://github.com/espressif/esp-idf
66 wiersze
2.1 KiB
Markdown
66 wiersze
2.1 KiB
Markdown
| Supported Targets | ESP32 |
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ESP-IDF UART HCI Controller
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===========================
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This is a btdm controller use UART as HCI IO. This require the UART device support RTS/CTS mandatory.
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It can do the configuration of UART number and UART baudrate by menuconfig.
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## How to use example
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### Hardware Required
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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.
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In this example, three UARTs are used:
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- UART0 is used as normal output or by IDF monitor
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- UART1 or UART2 is used to convey HCI messages
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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.
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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.
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### Configure the project
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```
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idf.py menuconfig
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```
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- UART number can be configured in `HCI UART(H4) Options > UART Number for HCI`
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- UART baudrate can be configured in `HCI UART(H4) Options > UART Baudrate for HCI`
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### Build and Flash
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Build the project and flash it to the board, then run monitor tool to view serial output:
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```
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idf.py -p PORT flash monitor
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```
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(Replace PORT with the name of the serial port to use.)
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
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## Example Output
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The example resets the HCI UART transport and enable Bluetooth Controller.
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```
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I (442) CONTROLLER_UART_HCI: HCI UART1 Pin select: TX 5, RX 18, CTS 23, RTS 19
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I (442) BTDM_INIT: BT controller compile version [078d492]
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I (452) system_api: Base MAC address is not set
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I (452) system_api: read default base MAC address from EFUSE
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I (462) phy_init: phy_version 4670,719f9f6,Feb 18 2021,17:07:07
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```
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After these output occurs, HCI messages can be commnunicated over UART1 or UART2. (UART1 in this example)
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## Troubleshooting
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