Declaration is incompatible with previous "WriteSample"

XX PP

Intellectual 270 points

Other Parts Discussed in Thread: TMS320C6748

Hi,

I tried some codes from website of Univ. of Texas, which relates to generate sine wave with TMS320C6748.

The codes are as follows:

********************************************************

float sine_val;

void isrAudio(void) {

.........................

WriteSample(sine_val,sine_val);

}

void WriteSample(float left,float right) {

int32_t ileft = (int32_t) left;

int32_t iright = (int32_t)right;

int32_t dataOut32;

dataOut32 = (iright << 16) | (ileft & 0x0000ffff);

while(!CHKBIT(MCASP->SRCTL11, XRDY)){}

MCASP->XBUF11 = dataOut32;

}

*********************************************************

After I built the project, an error comes out and says that "Declaration is incompatible with previous "WriteSample" ".

I don't know how to solve this problem.

Thanks in advance!

Best regards,

over 12 years ago

0 Badri Narayanan over 12 years ago

TI__Guru 59700 points

Please declare prototype for WriteSample before invocation else compiler will assume a prototype and when it encounters real fucntion defintion it will complain that declaration and definition mismatch. Modify your code as:

float sine_val;

/* Declare prototype for WriteSample */

void WriteSample(float left,float right);