RS-232 connection between AB02S-GPS and ESP32-V2

#1

I look to connect both boards via RS-232. For the ESP32 there are 2 URTS not used so not a problem.

What about the AB02S-GPS? Any possibility/idea how to use RX2/TX2?
Would expect that RX1/TX1 is for the USB? What about RTS/CTS?

#2

hi,

please refer the picture:

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#3

Thanks a lot. How to setup/select/deine the pins for rtx1/ctx1?

#4

@jasonXu
My understanding is as follows:

  • UART_NUM_0 is connected to the USB Interface
  • UART_NUM_1 is connected to the A530.

To use UART_NUM_1 I have to keep via Vect the GPS powered down and cannot use it.
Is this correct or do I miss something?

Thanks for the clarification in advance.

#5

Cannot redefine RX and TX pins, This has been fixed on the hardware.

#6

hi,

it control by GPIO14.

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#7

Thank’s a lot for the confirmation.