summaryrefslogtreecommitdiff
path: root/libraries/Firmata/examples/AllInputsFirmata
diff options
context:
space:
mode:
Diffstat (limited to 'libraries/Firmata/examples/AllInputsFirmata')
-rw-r--r--libraries/Firmata/examples/AllInputsFirmata/AllInputsFirmata.pde79
1 files changed, 79 insertions, 0 deletions
diff --git a/libraries/Firmata/examples/AllInputsFirmata/AllInputsFirmata.pde b/libraries/Firmata/examples/AllInputsFirmata/AllInputsFirmata.pde
new file mode 100644
index 0000000..5bf9cc7
--- /dev/null
+++ b/libraries/Firmata/examples/AllInputsFirmata/AllInputsFirmata.pde
@@ -0,0 +1,79 @@
+/*
+ * This firmware reads all inputs and sends them as fast as it can. It was
+ * inspired by the ease-of-use of the Arduino2Max program.
+ *
+ * This example code is in the public domain.
+ */
+#include <Firmata.h>
+
+byte pin;
+
+int analogValue;
+int previousAnalogValues[TOTAL_ANALOG_PINS];
+
+byte portStatus[TOTAL_PORTS]; // each bit: 1=pin is digital input, 0=other/ignore
+byte previousPINs[TOTAL_PORTS];
+
+/* timer variables */
+unsigned long currentMillis; // store the current value from millis()
+unsigned long previousMillis; // for comparison with currentMillis
+/* make sure that the FTDI buffer doesn't go over 60 bytes, otherwise you
+ get long, random delays. So only read analogs every 20ms or so */
+int samplingInterval = 19; // how often to run the main loop (in ms)
+
+void sendPort(byte portNumber, byte portValue)
+{
+ portValue = portValue & portStatus[portNumber];
+ if(previousPINs[portNumber] != portValue) {
+ Firmata.sendDigitalPort(portNumber, portValue);
+ previousPINs[portNumber] = portValue;
+ }
+}
+
+void setup()
+{
+ byte i, port, status;
+
+ Firmata.setFirmwareVersion(0, 1);
+
+ for(pin = 0; pin < TOTAL_PINS; pin++) {
+ if IS_PIN_DIGITAL(pin) pinMode(PIN_TO_DIGITAL(pin), INPUT);
+ }
+
+ for (port=0; port<TOTAL_PORTS; port++) {
+ status = 0;
+ for (i=0; i<8; i++) {
+ if (IS_PIN_DIGITAL(port * 8 + i)) status |= (1 << i);
+ }
+ portStatus[port] = status;
+ }
+
+ Firmata.begin(57600);
+}
+
+void loop()
+{
+ byte i;
+
+ for (i=0; i<TOTAL_PORTS; i++) {
+ sendPort(i, readPort(i));
+ }
+ /* make sure that the FTDI buffer doesn't go over 60 bytes, otherwise you
+ get long, random delays. So only read analogs every 20ms or so */
+ currentMillis = millis();
+ if(currentMillis - previousMillis > samplingInterval) {
+ previousMillis += samplingInterval;
+ while(Firmata.available()) {
+ Firmata.processInput();
+ }
+ for(pin = 0; pin < TOTAL_ANALOG_PINS; pin++) {
+ analogValue = analogRead(pin);
+ if(analogValue != previousAnalogValues[pin]) {
+ Firmata.sendAnalog(pin, analogValue);
+ previousAnalogValues[pin] = analogValue;
+ }
+ }
+ }
+}
+
+