shahabdv Posted September 14, 2018 Share Posted September 14, 2018 dear friends i used 20 Opi zero with armbian 5.38 for communicating over ttyS1 to Megatec UPS devices boards should send string on baud rate 2400 to UPS with RS232-To-TTL and get answer and work normally for the first time bur after a while serial stop transmitting data at all restart , stop-start ,... not fix problems the only way to fix the problem is connecting ttl to rs232 to pc and connect to serial with putty after that serial started send and receiving data and can use to communicate to ups devices i faced this problems on 9 of 20 boards programming language in python Thank you in advance! Link to comment Share on other sites More sharing options...
shahabdv Posted September 26, 2018 Author Share Posted September 26, 2018 dear friends nobody faced this problem?? any body has solution for this problem?? Link to comment Share on other sites More sharing options...
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