How to set TXD/RXD/RTS/CTS for UART

[Herwey]

Hi
Now I am using M5 model A for UART, how to set TXD/RXD/RTS/CTS ?? I set it as below:
#define ECHO_TEST_TXD (28)
#define ECHO_TEST_RXD (14)
#define ECHO_TEST_RTS (12)
#define ECHO_TEST_CTS (13)

But it not worked very well

[EeeeBin]

In uart branch, test it
https://github.com/m5stack/m5stack-cam-psram/blob/uart/main/main.c#L123

[Herwey]

Thanks ! I used this , but nothing printed in serial....

[EeeeBin]

https://github.com/m5stack/m5stack-cam-psram/blob/uart/main/main.c#L132
Serial print in tx=13, rx=12, not in usb-c bus

[Herwey]

I see, I used "make monitor". When I open a serial tool, I set the "baud_rate = 921600", it was wrong, it's not as below
uart_write_bytes(UART_NUM_1, (char *)tx_buffer, 7);
uart_write_bytes(UART_NUM_1, (char *)fb->buf, fb->len);
When I set "baud_rate = 115200", I can see the print info, but not serial.Right?

[Herwey]

I set the pin as below:
uart_set_pin(UART_NUM_0, 13, 12, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
It can send the data from serial, but it can't read the data from serial.
emmm...