uas_arduino

Working Copy DAC

Jan 25th, 2013
34
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  1. byte outputPins[] = {2,3,4,5};
  2. byte lookupTable[] = {127,130,133,136,139,142,145,148,151,154,157,160,163,166,169,172,175,178,181,184,186,189,192,194,197,200,202,205,207,209,212,214,216,218,221,223,225,227,229,230,232,234,235,237,239,240,241,243,244,245,246,247,248,249,250,250,251,252,252,253,253,253,253,253,254,253,253,253,253,253,252,252,251,250,250,249,248,247,246,245,244,243,241,240,239,237,235,234,232,230,229,227,225,223,221,218,216,214,212,209,207,205,202,200,197,194,192,189,186,184,181,178,175,172,169,166,163,160,157,154,151,148,145,142,139,136,133,130,127,123,120,117,114,111,108,105,102,99,96,93,90,87,84,81,78,75,72,69,67,64,61,59,56,53,51,48,46,44,41,39,37,35,32,30,28,26,24,23,21,19,18,16,14,13,12,10,9,8,7,6,5,4,3,3,2,1,1,0,0,0,0,0,0,0,0,0,0,0,1,1,2,3,3,4,5,6,7,8,9,10,12,13,14,16,18,19,21,23,24,26,28,30,32,35,37,39,41,44,46,48,51,53,56,59,61,64,67,69,72,75,78,81,84,87,90,93,96,99,102,105,108,111,114,117,120,123};
  3. byte tablePosition = 0;
  4.  
  5. void setup(){
  6. for(byte a = 0; a < 4; a++){
  7. pinMode(outputPins[a],OUTPUT);
  8. }
  9. }
  10.  
  11. void loop(){
  12. tablePosition++;
  13. for(byte bitPos = 0; bitPos < 4; bitPos++){
  14. if((lookupTable[tablePosition] >> bitPos) & 0x01){
  15. digitalWrite(outputPins[bitPos],HIGH);
  16. }else{
  17. digitalWrite(outputPins[bitPos],LOW);
  18. }
  19. }
  20. }
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