Test: split machine snippets

Signed-off-by: Jos Verlinde <[email protected]>

Author: Josverl

snippets/check_rp2/check_machine.py

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+# ADC
+from machine import ADC, Pin
+
+adc = ADC(Pin(26))  # create ADC object on ADC pin
+adc.read_u16()  # read value, 0-65535 across voltage range 0.0v - 3.3v

snippets/check_rp2/check_machine/check_ADC.py

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+# Software I2C
+
+from machine import Pin, SoftI2C
+
+i2c = SoftI2C(scl=Pin(5), sda=Pin(4), freq=100_000)
+
+i2c.scan()  # scan for devices
+
+i2c.readfrom(0x3A, 4)  # read 4 bytes from device with address 0x3a
+i2c.writeto(0x3A, "12")  # write '12' to device with address 0x3a
+
+buf = bytearray(10)  # create a buffer with 10 bytes
+i2c.writeto(0x3A, buf)  # write the given buffer to the peripheral
+
+# Hardware I2C
+from machine import Pin, I2C
+
+i2c = I2C(0)  # default assignment: scl=Pin(9), sda=Pin(8)
+i2c = I2C(1, scl=Pin(3), sda=Pin(2), freq=400_000)

snippets/check_rp2/check_machine/check_I2C.py

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+# I2S
+
+from machine import I2S, Pin
+buf = bytearray(10)  # create a buffer with 10 bytes
+
+i2s = I2S(0, sck=Pin(16), ws=Pin(17), sd=Pin(18), mode=I2S.TX, bits=16, format=I2S.STEREO, rate=44100, ibuf=40000)  # create I2S object
+i2s.write(buf)  # write buffer of audio samples to I2S device
+
+i2s = I2S(1, sck=Pin(0), ws=Pin(1), sd=Pin(2), mode=I2S.RX, bits=16, format=I2S.MONO, rate=22050, ibuf=40000)  # create I2S object
+i2s.readinto(buf)  # fill buffer with audio samples from I2S device
+

snippets/check_rp2/check_machine/check_I2S.py

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+# PWM
+
+from machine import Pin, PWM
+
+pwm0 = PWM(Pin(0))  # create PWM object from a pin
+pwm0.freq()  # get current frequency
+pwm0.freq(1000)  # set frequency
+pwm0.duty_u16()  # get current duty cycle, range 0-65535
+pwm0.duty_u16(200)  # set duty cycle, range 0-65535
+pwm0.deinit()  # turn off PWM on the pin
+
+

snippets/check_rp2/check_machine/check_PWM.py

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+# the hello world of IoT
+# This short script serves as a sanity check.
+# It makes the onboard LED blink
+
+# ref: https://docs.micropython.org/en/latest/rp2/quickref.html
+
+import utime as time
+from machine import Pin
+
+
+# Blink
+
+# led = Pin()
+led = Pin(1, value=2)
+led = Pin(13, Pin.OUT)
+
+
+for i in range(2):  # no infinite loop
+    led.on()
+    time.sleep_ms(250)
+    led.off()
+    time.sleep_ms(250)
+
+
+
+
+
+
+

snippets/check_rp2/check_machine/check_Pin.py

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+# Timers
+
+from machine import Timer
+
+tim = Timer(period=5000, mode=Timer.ONE_SHOT, callback=lambda t: print(1))
+tim.init(period=2000, mode=Timer.PERIODIC, callback=lambda t: print(2))
+
+
+from machine import Timer
+
+tim = Timer(period=5000, mode=Timer.ONE_SHOT, callback=lambda t: print(1))
+tim.init(period=2000, mode=Timer.PERIODIC, callback=lambda t: print(2))
+

snippets/check_rp2/check_machine/check_Timer.py

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+# UART
+from machine import UART, Pin
+
+uart1 = UART(1, baudrate=9600, tx=Pin(4), rx=Pin(5))
+uart1.write("hello")  # write 5 bytes
+uart1.read(5)  # read up to 5 bytes

snippets/check_rp2/check_machine/check_UART.py

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+# DS18S20 and DS18B20 devices:
+import time
+
+import ds18x20
+
+ds = ds18x20.DS18X20(ow)
+roms = ds.scan()
+ds.convert_temp()
+time.sleep_ms(750)
+for rom in roms:
+    print(ds.read_temp(rom))

snippets/check_rp2/check_machine/check_ds18x20.py

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+# NeoPixel
+
+from machine import Pin
+from neopixel import NeoPixel
+
+pin = Pin(0, Pin.OUT)  # set GPIO0 to output to drive NeoPixels
+np = NeoPixel(pin, 8)  # create NeoPixel driver on GPIO0 for 8 pixels
+
+# if micropython.version >= (1, 20, 0):
+#     np[0] = (255, 255, 255)  # set the first pixel to white
+#     np.write()  # write data to all pixels
+#     r, g, b = np[0]  # get first pixel colour