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USB serial communication between Raspberry Pi and micro:bit.
from microbit import *
import music
music.play(["C4:1", "G4:1"])
pot_value = 0
pot_prev = 0
data_in = ''
while True:
sleep(100)
# Read analog value and send serial uart data to Raspberry Pi
adc_pot = pin2.read_analog()
pot_value = int(adc_pot / 125)
if pot_value != pot_prev:
print(pot_value)
pot_prev = pot_value
# Read serial uart data from Raspberry Pi and control LEDs
try:
data_in = uart.read()
#display.scroll(in_byte)
pin16.write_digital(int(data_in) & 1)
pin15.write_digital((int(data_in) & 2) >> 1)
pin14.write_digital((int(data_in) & 4) >> 2)
except:
pass
from gpiozero import LED, Button, Buzzer
from time import sleep
import serial
led1 = LED(17)
led2 = LED(18)
led3 = LED(27)
led4 = LED(22)
led5 = LED(25)
led6 = LED(12)
led7 = LED(13)
led8 = LED(19)
sw1 = Button(21)
sw2 = Button(16)
sw3 = Button(20)
buzzer = Buzzer(26)
# Replace with your microbit port number
PORT = "/dev/ttyACM1"
BAUD = 115200
s = serial.Serial(PORT)
s.baudrate = BAUD
s.parity = serial.PARITY_NONE
s.databits = serial.EIGHTBITS
s.stopbits = serial.STOPBITS_ONE
s.timeout = 1
s.reset_input_buffer()
def leds(no):
if no >= 1:
led1.on()
else:
led1.off()
if no >= 2:
led2.on()
else:
led2.off()
if no >= 3:
led3.on()
else:
led3.off()
if no >= 4:
led4.on()
else:
led4.off()
if no >= 5:
led5.on()
else:
led5.off()
if no >= 6:
led6.on()
else:
led6.off()
if no >= 7:
led7.on()
else:
led7.off()
if no >= 8:
led8.on()
else:
led8.off()
def sw1Pressed():
global ledStatus
global sw1State
print("SW1 is pressed")
sw1State = not sw1State
if sw1State == True:
ledStatus = ledStatus + 1
else:
ledStatus = ledStatus - 1
def sw2Pressed():
global ledStatus
global sw2State
print("SW2 is pressed")
sw2State = not sw2State
if sw2State == True:
ledStatus = ledStatus + 2
else:
ledStatus = ledStatus - 2
def sw3Pressed():
global ledStatus
global sw3State
print("SW3 is pressed")
sw3State = not sw3State
if sw3State == True:
ledStatus = ledStatus + 4
else:
ledStatus = ledStatus - 4
sw1.when_pressed = sw1Pressed
sw2.when_pressed = sw2Pressed
sw3.when_pressed = sw3Pressed
sw1State = False
sw2State = False
sw3State = False
ledStatus = 0
prevLedStatus = 0
while True:
# Read serial uart data from microbit
try:
data = s.readline().decode('UTF-8')
data = int(data)
print("Receive data: {}".format(data))
leds(data)
except:
pass
# Send serial uart data to microbit
if ledStatus != prevLedStatus:
s.write(str(ledStatus).encode('UTF-8'))
prevLedStatus = ledStatus
s.close()
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