examples:uper:1:gpio

LED blink

This example demonstrates how to use UPER GPIO output to blink the red LED. It uses the on-board RGB led and requires no additional components.

Requirements:

Uper1 board

Code:

from time import sleep
from IoTPy.core.gpio import GPIO
from IoTPy.pyuper.uper import UPER1
 
LED_PIN_ID = 27
 
with UPER1() as board, board.GPIO(LED_PIN_ID) as redPin:
 
    redPin.setup(GPIO.OUTPUT)  # set GPIO pin to be output
 
    while True:
        redPin.write(0)  # Turn led ON (LED on board is common anode - therefore inverted)
        sleep(0.5)
        redPin.write(1)  # Turn led OFF
        sleep(0.5)

LED multicolor blink

In this case we use all LEDs and create a random color blinker. Just like before - out of the box UPER board is enough.

Requirements:

Uper1 board

Code:

import random
from time import sleep
from IoTPy.core.gpio import GPIO
from IoTPy.pyuper.uper import UPER1
 
with UPER1() as board, \
        board.GPIO(27) as redPin, board.GPIO(28) as greenPin, board.GPIO(34) as bluePin:
 
    pins = [redPin, greenPin, bluePin]
 
    for pin in pins:
        pin.setup(GPIO.OUTPUT)  # set GPIO pins to be output
 
    while True:
        pin = random.choice(pins)  # choose random rgb pin
        pin.write(random.choice([0, 1]))  # randomly turn that pin on or off
        sleep(0.2)

Button press detect

This example shows how to use GPIO read function to determine push-button state.

Requirements:

Uper1 board
Breadboard
Push-button
10k (or similar) resistor
Wires

Schematic:

Code:

from IoTPy.core.gpio import GPIO
from IoTPy.pyuper.uper import UPER1
 
with UPER1() as board, board.GPIO(27) as redPin, board.GPIO(18) as buttonPin:
 
    buttonPin.setup(GPIO.INPUT, GPIO.PULL_UP)
    redPin.setup(GPIO.OUTPUT)
 
    oldState = buttonPin.read()
    redPin.write(oldState)
 
    nButtonPress = 0
    nButtonRelease = 0
 
    # This might look complicated, but all of the code in the while loop
    # can be replaced with redPin.write(buttonPin.read())
    # Variables and counters are here just for the print messages.
    while True:
        newState = buttonPin.read()
 
        if oldState != newState:
            oldState = newState
 
            if newState == 0:
                nButtonPress += 1
                print "Button pressed %i" % nButtonPress
                redPin.write(0)  # Turn led ON
            else:
                nButtonRelease += 1
                print "Button released %i" % nButtonRelease
                redPin.write(1)  # Turn led OFF

SHT10 sensor

SHT1x family sensors use a modified (non-standard) I2C protocol, therefore we have implemented a bit-banged SHT1x sensor class.

Requirements:

Uper1 board
SHT10 breakout board
Breadboard
Wires

Schematic:

Code:

from time import sleep
from IoTPy.pyuper.uper import UPER1
from IoTPy.things.sht1x import SHT1X
 
with UPER1 as board, board.GPIO(1) as data, board.GPIO(2) as sck, SHT1X(data, sck) as sensor:
    while True:
        print "Temperature: %.1f Humidity: %.1f" % (sensor.temperature(), sensor.humidity())
        sleep(1)