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rbhalla

13 Posts
Posted - 04 Jun 2002 :  14:57:30  Show Profile
I downloaded the A2DTest program that reads the 8 analog ports on the ADS Graphics Master plus. I then added two more call to configure the PORTB as output and write a value. These calls are

SIOInitDDRB(0x0f); // Configure Port B as output
SIOWritePortC(value);

However the app crashes when you run and gives a Fatal Application error exception 0xc0000005 address 0x00000000

I am clueless.
ADS Reports a smartIO part type 0x4434 version 0x4017 revision j




Edited by - rbhalla on 06/04/2002 15:08:56

ctacke

877 Posts
Posted - 04 Jun 2002 :  15:32:24  Show Profile
Just to clarify, you are configuring port B for output (SIOInitDDRB), but the code you posted is writing to Port C (SIOWritePortC(value);).

Is this a typo?



-----------------
Chris Tacke, eMVP
Applied Data Support
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rbhalla

13 Posts
Posted - 04 Jun 2002 :  16:22:36  Show Profile
Sorry that was a typo.
Here is an update -
The app does not crash anymore. However there is no output on portc.
Here is the relevant code 


SIOSelectOption(2);
SIOInitDDRA(0x00);
SIOInitDDRC(0xff);  // Configure Port C as output
SIOSetSSPTimeout(500);
while(TRUE)
 {		
      // return to start of line each time
      RETAILMSG(TRUE, (_T("\r  ")));

      // read data
      for(int i = 0 ; i < 8 ; i++) {
         RETAILMSG(TRUE, (_T("0x%04X "), SIOAnalogConversion(i)));
      }

      SIOWritePortC(portC);
      portC ^= 0xFF;
      Sleep(250);

}
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rbhalla

13 Posts
Posted - 04 Jun 2002 :  16:32:11  Show Profile
Never mind - found the problem. Bad crimp on the ribbon cable that came with the ADS. It always the ME's
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profking

8 Posts
Posted - 25 Jul 2003 :  14:04:31  Show Profile
my bitsy reads 0x0000 for a bit and then reads 0xffff until i reboot. The timeout command does not seem to have effect on result. How can I fix?
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