Events/2020/AVR: Difference between revisions

Events/2020/AVR (view source)

771 bytes added , 24 January 2021

50

edits

@@ Line 172: / Line 172: @@
    interrupts();
 }
+// --- Interrupt service routines
+ISR(TIMER1_COMPA_vect) {
+  // Begin a conversion on the first channel in the sequence and record the time.
+  readComplete = false;
+  index = 0;
+  ADMUX = channelSequence[index];
+  bitSet(ADCSRA, ADSC); // ADSC == "Analog-Digital converter Start Conversion"
+  sampleTime = micros();
+}
+ISR(ADC_vect) {
+  // Store the conversion result.
+  rawADC[index] = ADC;
+  // Check if all channels have been read. If not, start the next one.
+  if (index == maxIndex) readComplete = true;
+  else {
+    index++;
+    ADMUX = channelSequence[index];
+    bitSet(ADCSRA, ADSC);
+  }
+}
+// --- Interrupt service routines
+ISR(TIMER0_COMPA_vect) {
+  // Debounce the button. See comments in 'AccelCalib.ino'.
+  static volatile uint16_t btnHistory = 0xFFFF;
 </pre>