IO problem (ST7LITE29)

itamar_nsu · ‎2003-11-11

Posted on November 12, 2003 at 02:42

itamar_nsu · ‎2003-11-08

Posted on November 09, 2003 at 06:30

Hi,

I'm trying to read the status of PA5 pin. I configured the PADR & PAOR to input-pullup, but i can't get the pin's status on the PADR.. when i do the same thing with PA7 - it works ok... Does any one know why?!

thanks

Itamar

p.s. I work with the inDart evaluation board

delser9 · ‎2003-11-09

Posted on November 10, 2003 at 03:17

Be aware that there is a series resistor between your application and the ISP ports. This may change your signal levels. PA5 is an ISP input and therefore does have a 4k7 resistor in series. Check 'InDart User's Manual' page 6.

itamar_nsu · ‎2003-11-09

Posted on November 10, 2003 at 03:25

Thanks, but i had the same problem with PA2/1 too..

any more ideas?

itamar

shreya · ‎2003-11-11

Posted on November 12, 2003 at 02:42

Hi,

In case of debugging with inDART, the ICCCLK and ICCDATA lines are used for communication between the PC and device. For Lite29 these are on port A. I am guessing that when you are manipulating port A you are changing PA6 and PA5 by mistake.(You should not touch even the corresponding PADDR/PAOR bits for these two lines) This could be corrupting data and causing the problem.

Hope this helps...