How to change ESP32 Hardware Serial Ports pin inside Mongoose

Questions & Answers
1

Hi Guys,

By default, Mongoose configure ESP32 HardwareSerial Pins as follows:

UART 0: Rx: 3, Tx: 1, CTS: 19, RTS: 22
UART 1: Rx: 25, Tx: 26, CTS: 27, RTS: 13
UART 2: Rx: 16, Tx: 17, CTS: 14, RTS: 15

I would like to change UART 1 pins to:

UART 1: Rx: 34, Tx: 32

How can I do this on mos.yml file ?

I will appreciate any directions.

Thank you

Regards

José Luiz

2

You can do it in your program, not in mos.yml
Example

1 Like
3

Hi nliviu,

I appreciated your kindly help.

I follow your suggestion and I could change serial pins for ESP32 UART1 inside the code as follow:

//HardwareSerial Serial ATMEGA (RX=GPIO34 , TX=GPIO32);
int uart_atmega = 1;
struct mgos_uart_config ucfg_1;
mgos_uart_config_set_defaults(uart_atmega, &ucfg_1);
ucfg_1.baud_rate = 115200;
ucfg_1.num_data_bits = 8;
ucfg_1.parity = MGOS_UART_PARITY_NONE;
ucfg_1.stop_bits = MGOS_UART_STOP_BITS_1;
ucfg_1.dev.tx_gpio = 32;
ucfg_1.dev.rx_gpio = 34;

Thank You Very Much for your help, it makes possible to finish my project.

Best Regards

José Luiz

4

Hi Jose,
Can you please tell me in what file did you put that code, in order for it to change the UART pins? is it mos.yml or init.js file? thank you