Weird compiler problem.

NZ_Design — Mon, 19 Nov 2007 05:04:54 GMT

I have this code in my program for reading SPI port.
uchar SPI_Proc (SPI_PORT Port, uchar cValue)
{
volatile uchar cData;
while (!(*Port.pSPISR & SPI_TEF));                // Wait for SPTEF set
*Port.pSPIDR = cValue;
while (!(*Port.pSPISR & SPI_IF));                 // Wait for SPIF set
cData = *Port.pSPIDR;
cSPI_Data = cData;                                       // load value into global location.
return cData;
}

I have two lines calling this routine one after the other.

cData = SPI_Proc(AD7730_Port,bComm);   // this line returns 0x30 which is correct.
cData = SPI_Proc(AD7730_Port,bComm);   // this line also returns 0x30 but should be 0x80.

if I read cSPI_Data (global value) after the secound line it is equal to 0x80.

Therefore the secound SPI_Proc is not returning the data. Why???? Its reading the correct data but not returning it.

Re: Weird compiler problem.

CrasyCat — Mon, 19 Nov 2007 21:13:58 GMT

Hello

In order to investigate that we probably need some project reproducing the trouble.

Trouble might come from the source code or from the options you are using.

I would recommend you to submit a service request for that.

Click here to submit a service request.

Make sure to attach a reproducible project and installed product information to the service request.
To generate the required information:
- Start CodeWarrior
- Open the project
- Select "Help" -> "Pack and Go" and follow instructions on the screen.

Attach the generated .zip file to the SR.

CrasyCat

topic Weird compiler problem. in Classic/Legacy CodeWarrior

Weird compiler problem.

Re: Weird compiler problem.