menu "Echo RS485 Example Configuration" orsource "$IDF_PATH/examples/common_components/env_caps/$IDF_TARGET/Kconfig.env_caps" config ECHO_UART_PORT_NUM int "UART port number" range 0 2 if IDF_TARGET_ESP32 || IDF_TARGET_ESP32S3 default 2 if IDF_TARGET_ESP32 || IDF_TARGET_ESP32S3 range 0 1 default 1 help UART communication port number for the example. See UART documentation for available port numbers. config ECHO_UART_BAUD_RATE int "UART communication speed" range 1200 115200 default 115200 help UART communication speed for Modbus example. config ECHO_UART_RXD int "UART RXD pin number" range ENV_GPIO_RANGE_MIN ENV_GPIO_IN_RANGE_MAX default 22 if IDF_TARGET_ESP32 default 8 if !IDF_TARGET_ESP32 help GPIO number for UART RX pin. See UART documentation for more information about available pin numbers for UART. config ECHO_UART_TXD int "UART TXD pin number" range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX default 23 if IDF_TARGET_ESP32 default 9 if !IDF_TARGET_ESP32 help GPIO number for UART TX pin. See UART documentation for more information about available pin numbers for UART. config ECHO_UART_RTS int "UART RTS pin number" range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX default 18 if IDF_TARGET_ESP32 default 10 if !IDF_TARGET_ESP32 help GPIO number for UART RTS pin. This pin is connected to ~RE/DE pin of RS485 transceiver to switch direction. See UART documentation for more information about available pin numbers for UART. endmenu