arduino stuffs
Diffstat (limited to 'libraries/Firmata/examples/SimpleDigitalFirmata/SimpleDigitalFirmata.ino')
| -rw-r--r-- | libraries/Firmata/examples/SimpleDigitalFirmata/SimpleDigitalFirmata.ino | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/libraries/Firmata/examples/SimpleDigitalFirmata/SimpleDigitalFirmata.ino b/libraries/Firmata/examples/SimpleDigitalFirmata/SimpleDigitalFirmata.ino new file mode 100644 index 0000000..91db333 --- /dev/null +++ b/libraries/Firmata/examples/SimpleDigitalFirmata/SimpleDigitalFirmata.ino @@ -0,0 +1,72 @@ +/* + * Firmata is a generic protocol for communicating with microcontrollers + * from software on a host computer. It is intended to work with + * any host computer software package. + * + * To download a host software package, please click on the following link + * to open the list of Firmata client libraries in your default browser. + * + * https://github.com/firmata/arduino#firmata-client-libraries + */ + +/* Supports as many digital inputs and outputs as possible. + * + * This example code is in the public domain. + */ +#include <Firmata.h> + +byte previousPIN[TOTAL_PORTS]; // PIN means PORT for input +byte previousPORT[TOTAL_PORTS]; + +void outputPort(byte portNumber, byte portValue) +{ + // only send the data when it changes, otherwise you get too many messages! + if (previousPIN[portNumber] != portValue) { + Firmata.sendDigitalPort(portNumber, portValue); + previousPIN[portNumber] = portValue; + } +} + +void setPinModeCallback(byte pin, int mode) { + if (IS_PIN_DIGITAL(pin)) { + pinMode(PIN_TO_DIGITAL(pin), mode); + } +} + +void digitalWriteCallback(byte port, int value) +{ + byte i; + byte currentPinValue, previousPinValue; + + if (port < TOTAL_PORTS && value != previousPORT[port]) { + for (i = 0; i < 8; i++) { + currentPinValue = (byte) value & (1 << i); + previousPinValue = previousPORT[port] & (1 << i); + if (currentPinValue != previousPinValue) { + digitalWrite(i + (port * 8), currentPinValue); + } + } + previousPORT[port] = value; + } +} + +void setup() +{ + Firmata.setFirmwareVersion(FIRMATA_FIRMWARE_MAJOR_VERSION, FIRMATA_FIRMWARE_MINOR_VERSION); + Firmata.attach(DIGITAL_MESSAGE, digitalWriteCallback); + Firmata.attach(SET_PIN_MODE, setPinModeCallback); + Firmata.begin(57600); +} + +void loop() +{ + byte i; + + for (i = 0; i < TOTAL_PORTS; i++) { + outputPort(i, readPort(i, 0xff)); + } + + while (Firmata.available()) { + Firmata.processInput(); + } +} |