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tutorials_devicehub [2016/12/16 05:17] admin [Sending Commands to the Nodes] |
tutorials_devicehub [2017/04/01 06:50] (current) admin [Sending Commands to the Nodes] |
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| Line 36: | Line 36: | ||
| def analog_input(dev, sensor): | def analog_input(dev, sensor): | ||
| value = randint(0, 1023) | value = randint(0, 1023) | ||
| - | sensor.addValue(value) | + | sensor.addValue(float(value.strip())) |
| dev.send() | dev.send() | ||
| print value | print value | ||
| Line 178: | Line 178: | ||
| DEVICE_UUID = 'your Device UUID' | DEVICE_UUID = 'your Device UUID' | ||
| API_KEY = 'your API KEY' | API_KEY = 'your API KEY' | ||
| - | AN_SENSOR_NAME = 'LED' #make sure your actuator has the same name on DeviceHub! | + | ACTUATOR_NAME1 = 'LED' #make sure your actuator has the same name on DeviceHub! |
| Line 208: | Line 208: | ||
| from devicehub import Sensor, Actuator, Device, Project | from devicehub import Sensor, Actuator, Device, Project | ||
| from time import sleep | from time import sleep | ||
| + | import serial | ||
| PROJECT_ID = 'your project ID' | PROJECT_ID = 'your project ID' | ||
| Line 221: | Line 222: | ||
| def act1_callback(payload): | def act1_callback(payload): | ||
| - | """ | + | global red |
| - | :param payload: mqtt payload message | + | |
| - | """ | + | |
| print ACT1.state | print ACT1.state | ||
| red = str(ACT1.state) | red = str(ACT1.state) | ||
| - | + | ||
| + | def act2_callback(payload): | ||
| + | global green | ||
| + | print ACT2.state | ||
| + | green = str(ACT2.state) | ||
| + | |||
| + | def act3_callback(payload): | ||
| + | global blue | ||
| + | print ACT3.state | ||
| + | blue = str(ACT3.state) | ||
| + | |||
| project = Project(PROJECT_ID) | project = Project(PROJECT_ID) | ||
| device = Device(project, DEVICE_UUID, API_KEY) | device = Device(project, DEVICE_UUID, API_KEY) | ||
| - | ACT1 = Actuator(Actuator.ANALOG, ACTUATOR_NAME1) | + | ACT1 = Actuator(Actuator.ANALOG, AN1_SENSOR_NAME) |
| - | + | ACT2 = Actuator(Actuator.ANALOG, AN2_SENSOR_NAME) | |
| + | ACT3 = Actuator(Actuator.ANALOG, AN3_SENSOR_NAME) | ||
| device.addActuator(ACT1, act1_callback) | device.addActuator(ACT1, act1_callback) | ||
| - | + | device.addActuator(ACT2, act2_callback) | |
| + | device.addActuator(ACT3, act3_callback) | ||
| + | |||
| + | # Make sure you have the correct port and baud rate selected | ||
| + | # For Windows, use COMx instead of ttyUSB | ||
| + | ser=serial.Serial('/dev/ttyUSB0', 9600) | ||
| try: | try: | ||
| while True: | while True: | ||
| - | pass | + | ser.write(red + ',' + green + ',' + blue + '\n') #send RGB values as CSV |
| + | sleep(1.0) | ||
| except KeyboardInterrupt: | except KeyboardInterrupt: | ||
| print 'Goodbye!' | print 'Goodbye!' | ||
| | | ||
| </code> | </code> | ||
| + | |||
| + | Now we need to write an Arduino sketch for the Sparrow node to read the CSV data from the serial port and refresh the color on the LED: | ||
| <code C> | <code C> | ||
| Line 246: | Line 266: | ||
| // pins for the LEDs: | // pins for the LEDs: | ||
| const int redPin = 8; | const int redPin = 8; | ||
| - | const int greenPin = 11 | + | const int greenPin = 11; |
| const int bluePin = 10; | const int bluePin = 10; | ||