Connection to STN1110

Question

I am trying to connect to the STN1110 chip through the screen. Unfortunately, I only get strange characters as an answer.

I understand that this is due to the wrong bit rate. I tried several baud rates that I could find for the STN1100 (9600, 115200, 38400), but none of them work. Am I missing something? Thank you, as always, for your help.

Answer 1

To use 921600, I did the following:

$ setserial /dev/ttyS0 port 0x3f8 uart 16550A baud_base 921600 $ stty -F /dev/ttyS0 921600 

Then he brought up "putty" and set the baud rate to 921600, connected to / dev / ttyS 0.

Then the ST command is executed:

 st sbr 921600 

Seems to work.

Answer 2

I seem to have found a solution. The screen was not a problem, and the 9600 baud rate was correct. After checking the wiring (thanks to the type from my mailbox), we noticed that the grounding of the ttl to usb adapter is not connected correctly to the STN1110. After I fixed the ground, everything was fine.

Answer 3

connect via rs232 install br:9600 (default)

and show the entire software protocol

 atpps 

if you want a new br:38400

 atpp 0c sv 68 atpp 0c on atz 

new br:38400 connection br:38400