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strange things of my at89c5131 code

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pioneer_yang

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Hi, Friends

I use the free code c5131-usb-kbd-stand-alone-1_0_2 to develop my own at89c5131 usb keyboard. I modify the code in the usb_task.c to let the at89c5131 detect more peripheral devices. then I meet a very strange thing:

if let it only detect two joystick input, it work ok, and the output is right.
But if I add more detection to the third joystick, the output to computer is not right.
the output from the first joystick even can output the value of the third joystick.

I do not know why, is it the problem of keil software? who can help me out. My project should be finished on next monday..


Save me

Jason:cry::cry::cry::cry:
 

hey in principle you shouldnt have a problem and nothing comes to mind immediatedly..
if you could actually upload something for us to have a look at, we might be able to help you..

regards,
wiztronix
 

thank you for your reply. I find my problem. I find one port of my ADC0809 is failed, maybe the port is interconnect to the other port internally. So I get the strange output.

I change the other port, so my code can work OK now. thank you very much.


Best regards
 

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