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Altera_Forum
Honored Contributor
Honored ContributorRS232 rxd code
Hi :)
i'm new here and i need some help... i work on project and i need to read from kind of machine some letters... there is an ascii code to all letter. this machine send words that i need to read them. in this words i need to check the letters (Y/N)? for the start of this check i want to check one letter/char for example: ( or Y or / . i know that machine send '1' (idle) always and when i press "reset" on this machine, the machine send words that i need to read with start bit+8 bits (data)+stop bit. I'll be glad if someone would help me to write this code or give me examples of rxd codes :) thanks...14 Replies
Altera_Forum--- Quote Start --- I would use a timer for waiting, and add a state to check the timer. --- Quote End --- can you show me how?- Altera_Forum
I could, but there is enough reference material on the www. Use your favorite search engine and search for VHDL Timer.
- Altera_Forum
You might think about changing the clock and use the wait timer to also time the bits.
- Altera_Forum--- Quote Start --- I could, but there is enough reference material on the www. Use your favorite search engine and search for VHDL Timer. --- Quote End --- --- Quote Start --- You might think about changing the clock and use the wait timer to also time the bits. --- Quote End --- its work :) rx was connected to rx and tx was connected to tx but its work just if rx to tx and tx to rx (wires)... thank you all :)
