Using the DE-Series ADC Controller - Using the DE-Series ADC Controller When the following c-code is loaded, the leds will light up but not respond to the attached pot. The leds hold their initial value, and this initial value changes on different load attempts (I'm not sure what changes I've made to make this happen). De0 Nano Platform Designer Modules: Nios ii, econ-mode on-chip memory ADC Leds JTAG ========================================================= #define ADC_ADDR 0x00011000 //Qsys defined base address for the ADC #define LED_ADDR 0x00011020 //Qsys defined base address for the LEDs int main (void) { volatile int * adc = (int*)(ADC_ADDR); volatile int * led = (int*)(LED_ADDR); unsigned int data; int channel; data = 0; channel = 0; while(1) { *(adc) = 0; //Start the ADC read data = *(adc+channel); //Get the value of the selected channel data = data/16; //Ignore the lowest 4 bits *(led) = data; //Display the value on the LEDs usleep(100000); //*(led) = 0x00; //usleep(100000); //*(led) = 0xFE; //usleep(100000); } return 0; } ======================================================== Any help is greatly appreciated Replies: Re: Using the DE-Series ADC Controller Hi, Joseph I think your ADC is not reading a new data. You may need to check your reference design. Can we close it if you have no more inquiry ? Eric Replies: Re: Using the DE-Series ADC Controller Hi, Joseph May I know which document you are referring to ? Eric