Posted: Wed Dec 19, 2018 2:44 pm Post subject: USART timing
What is the minimum USART delay time between send (Tx) data and receive (Rx) data, with Atmega at 16MHz clk, and Baud=250k? I have max 1mS between Tx/Rx, is that enough?
I have problem with receiving data after the slave is received valid command from Atmega, with logic analayzer I can see that slave respond (after 1ms) with correct 30 bytes (clean bytes not chr) of data on Atmega's query, but atmega don't see even one byte when slave respond, green on the picture (I use Inputbin command, Ischarwaiting is always 0).
Thanks in advance.
_________________ A clever person solves a problem. A wise person avoids it. Albert Einstein
Resolved, the problem was in cheap defective cable on Rx line... By the way USART delay time between send (Tx) data and
received (Rx) data now is 5us and USART works without any problems on 250k. _________________ A clever person solves a problem. A wise person avoids it. Albert Einstein
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You cannot download files in this forum
FAQ
Search
Register
Log in
defective cable on Rx line... By the way USART delay time between send (Tx) data and