Events/2020/AVR: Difference between revisions

Events/2020/AVR (view source)

957 bytes added , 24 January 2021

50

edits

@@ Line 80: / Line 80: @@
 // --- setup() and loop()
+void setup() {
+  doLowLevelConfig();
+  pinMode(2, INPUT_PULLUP); // Changing this pin requires changes in doLowLevelConfig()
+  pinMode(LED_BUILTIN, OUTPUT);
+  digitalWrite(LED_BUILTIN, LOW);
+  // Initialize communication with PC.
+  Serial.begin(115200);
+  Serial.println(getHeader());
+}
+void loop() {
+  if (readComplete) {
+    readComplete = false;
+	  // TODO - format output using C-style strings instead
+    sample = sampleTime;
+    for (uint8_t i = 0; i <= maxIndex; i++) {
+      sample += "," + String(rawADC[i]);
+    }
+    Serial.println(sample); // Blocking? Technically, but this is usually fast.
+  }
+  // Handle button presses (or releases in our case).
+  if (btnReleased) {
+    btnReleased = false;
+    if (recording) {
+      // If we're recording, stop.
+      bitClear(ADCSRA, ADEN);
+      recording = false;
+    }
+    else {
+      // If we're not recording, start.
+      recording = true;
+      bitSet(ADCSRA, ADEN);
+    }
+  }
+}
 </pre>