File content as of revision 0:ee400a44f6f3:

/* Program Example 14.4: Sawtooth waveform on DAC output. View on oscilloscope. Port 0.26 is used for DAC output, i.e. mbed Pin 18
                                                */
// function prototype                                              
void delay(void);
// variable declarations                                              
int dac_value;             //the value to be output
//define addresses of control registers, as pointers to volatile data 
#define DACR (*(volatile unsigned long *)(0x4008C000))
#define PINSEL1 (*(volatile unsigned long *)(0x4002C004))

int main(){
  PINSEL1=0x00200000; //set bits 21-20 to 10 to enable analog out on P0.26
  while(1){
    for (dac_value=0;dac_value<1023;dac_value=dac_value+1){
      DACR=(dac_value<<6); 
      delay();
    }
  }
 }

void delay(void){            //delay function.
    int j;                      //loop variable j
    for (j=0; j<1000000; j++) {
        j++;
        j--;                      //waste time
    }
}