|
Posted on:
|
Hi all, I am now using the uart prot on Nexy's 3 board to receive 8 bit data in 9600 baud rate from PC. My design will simply respond "#" when upper case vowel is typed in hyperterminal and respond "N" when others are typed. However, the result will only echo N whatever I typed. I assumed that it was the endian problem on receiver side. May I know that If the PC send 01010101 to the board, will the Nexy's 3 board automatically change it to 10101010 or remains the same? Anyway, I have tried both way but the result only echo N but not #. I have also check the clock frequency. It is 100MHz on board and 9600 baud from PC. Therefore I made a counter to count every 100M/9600 = 10416 clk cycle to read one bit. Could any one help me to get out this situation? Thanks. Tom
|
Posted on:
|
Tom Sun wrote: > My design will simply respond "#" when upper case vowel is > typed in hyperterminal and respond "N" when others are typed. Why not just echo what you typed? This would make debugging much easier, as you possibly could see regularity in characters being altered...
|
Posted on:
|
> but the result only echo N but not # so the baud rate and the timing of the sending routine seems to be correct. > Therefore I made > a counter to count every 100M/9600 = 10416 clk cycle to read one bit. Usually you would want to read all bits in the middle of the bit. So you should read the start bit 5208 clk cycles after the falling edge. best regards Anja
|
Posted on:
|
@Tom Sun Pls attach your code file(s). The problem may be buried there...
Watch this topic
Disable multi-page view