rs232 problem

[alex989]

Hi,
I'm trying to use the rs232 port of the board but I'm some trouble.
to test it i have done a bridge from pin 2 and 3 of dsub connector and seems that the bytes that send doesn't been received.
i attach an other rs232 module in the same pin and with this module the bytes that send also been received.
seems that is the rs232 module of the board that have some problem

[admin]

take a photo , how you connect with wires.

[alex989]

i have done a bridge with a wire from pin2 and pin 3

[admin]

take photo is better.

[alex989]

This is the bridge

[admin]

short these 2 pins, check whether work well. on the bottom of KC868-A6 PCB board.
   

[alex989]

I try to connect but doesn't change anything.
In the log I see only the output traffic

[admin]

can you write a simple arduino code, just send message, print receive message. let pin2,pin3 short. check the receiver whether can receive message.

[alex989]

Have you an example code?

[admin]

tomorrow when i have free time, write a test code for you.