is it possible to connect 2 UART ports on esp32?

[shurik05]

I seen an example for esphome-jk-bms to utilize 2 uart ports on esp32 is that possible with esphome-jbd-bms as I do not see any examples. I tried the following but get the following error message.
"Too many candidates found for 'uart_id' type 'uart::UARTComponent' Some are 'uart_0', 'uart_1'."

substitutions:
  name: jbd-bms-uart
  device_description: "Monitor and control a Xiaoxiang Battery Management System (JBD-BMS) via UART"
  external_components_source: github://smaksimowicz/esphome-jbd-bms@main #external_components_source: github://syssi/esphome-jbd-bms@main
  tx_pin_uart_0: GPIO04
  rx_pin_uart_0: GPIO05
  tx_pin_uart_1: GPIO14
  rx_pin_uart_1: GPIO15
  rx_timeout: 150ms

external_components:
  - source: ${external_components_source}
    refresh: 0s

uart:
  - id: uart_0
    baud_rate: 9600
    tx_pin: ${tx_pin_uart_0}
    rx_pin: ${rx_pin_uart_0}
  - id: uart_1
    baud_rate: 9600
    tx_pin: ${tx_pin_uart_1}
    rx_pin: ${rx_pin_uart_1}

[syssi]

Your example above looks good. It will create two different UARTs with two different identifiers. As next step you have to assign the jbd_bms to a specific uart because there are multiple available now and it's not obvious anymore which should be used. Please add uart_id: uart_0 to the first jbd_bms instance.

[syssi]

Long story short: It's possible to instanciate the jbd_bms component multiple times and assign an individual uart per instance. As next step each jbd_bms instance needs an id, because the sensors needs to be assigned to a specific instance using the jbd_bms_id parameter.

[shurik05]

Thank you it worked. Here is what I added.

jbd_bms:

• id: bms0
  update_interval: 2s
  rx_timeout: ${rx_timeout}
  uart_id: uart_0
• id: bms1
  update_interval: 2s
  rx_timeout: ${rx_timeout}
  uart_id: uart_1