vifdeo draft

docs/files/finalproject/Fullcycles/Fullcycles.ino

@@ -14,10 +14,17 @@ const int DRUM_FAST = 30;
 const int DRUM_STOP = 0;
 int potVal;
 Servo esc;
+const int HX_OUT_PIN = D4;
+const int HX_SCK_PIN = D5;
 
 
-void setup() {
+enum HX_MODE { NONE, DIFF_10Hz, TEMP_40Hz, DIFF_40Hz};
+const byte HX_MODE = DIFF_40Hz;
+
 
+void setup() {
+  pinMode(HX_SCK_PIN, OUTPUT);
+  pinMode(HX_OUT_PIN, INPUT);
     pinMode(LED_PIN, OUTPUT);
     pinMode(WASH_BUTTON_PIN, INPUT_PULLUP);
     pinMode(DRY_BUTTON_PIN, INPUT_PULLUP);
@@ -34,6 +41,7 @@ void setup() {
 
 void loop() {
     // Wait for the wash button press
+    Serial.println(readHX());
     if (digitalRead(WASH_BUTTON_PIN) == LOW) {
         // Check the water level and lid status
         if (digitalRead(WATER_SENSOR_PIN) == HIGH && digitalRead(LID_SENSOR_PIN) == LOW) {
@@ -117,3 +125,32 @@ void loop() {
  
     }
 
+    
+unsigned long readHX() {
+
+  // pulse clock line to start a reading
+  for (char i = 0; i < HX_MODE; i++) {
+    digitalWrite(HX_SCK_PIN, HIGH);
+    digitalWrite(HX_SCK_PIN, LOW);
+  }
+
+  // wait for the reading to finish
+  while (digitalRead(HX_OUT_PIN)) {}
+
+  // read the 24-bit pressure as 3 bytes using SPI
+  byte data[3];
+  for (byte j = 3; j--;) {
+    data[j] = shiftIn(HX_OUT_PIN, HX_SCK_PIN, MSBFIRST);
+  }
+  
+  data[2] ^= 0x80;  // see note
+
+  // shift the 3 bytes into a large integer
+  long result;
+  result += (long)data[2] << 16;
+  result += (long)data[1] << 8;
+  result += (long)data[0];
+
+  return result;
+}
+