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diff --git a/‎cores/esp32/esp32-hal-uart.c
Copy file name to clipboardExpand all lines: cores/esp32/esp32-hal-uart.c
+3Lines changed: 3 additions & 0 deletions b/‎cores/esp32/esp32-hal-uart.c
Copy file name to clipboardExpand all lines: cores/esp32/esp32-hal-uart.c
+3Lines changed: 3 additions & 0 deletions
@@ -140,6 +140,9 @@ uart_t* uartBegin(uint8_t uart_nr, uint32_t baudrate, uint32_t config, int8_t rx
         ESP_ERROR_CHECK(uart_set_line_inverse(uart_nr, UART_SIGNAL_TXD_INV | UART_SIGNAL_RXD_INV));    
     }
 
+    // Set RS485 half duplex mode on UART.  This shall force flush to wait up to sending all bits out
+    ESP_ERROR_CHECK(uart_set_mode(uart_nr, UART_MODE_RS485_HALF_DUPLEX));
+
     UART_MUTEX_UNLOCK();
 
     uartFlush(uart);
Original file line number	Diff line number	Diff line change
`@@ -140,6 +140,9 @@ uart_t* uartBegin(uint8_t uart_nr, uint32_t baudrate, uint32_t config, int8_t rx`
`140`	`140`	`ESP_ERROR_CHECK(uart_set_line_inverse(uart_nr, UART_SIGNAL_TXD_INV \| UART_SIGNAL_RXD_INV));`
`141`	`141`	`}`
`142`	`142`
	`143`	`+ // Set RS485 half duplex mode on UART. This shall force flush to wait up to sending all bits out`
	`144`	`+ ESP_ERROR_CHECK(uart_set_mode(uart_nr, UART_MODE_RS485_HALF_DUPLEX));`
	`145`	`+`
`143`	`146`	`UART_MUTEX_UNLOCK();`
`144`	`147`
`145`	`148`	`uartFlush(uart);`