52 lines
1.1 KiB
Python
52 lines
1.1 KiB
Python
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#!/bin/env python
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import serial
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import pygame
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ser = serial.Serial("/dev/ttyACM0", 115200)
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pygame.init()
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size = width, height = 640, 480
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screen = pygame.display.set_mode(size)
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screen.fill((0, 0, 0))
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try:
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ser.open()
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except Exception:
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print("Error while opening serial port.")
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if ser.isOpen():
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try:
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ser.flushInput()
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ser.flushOutput()
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maximum = -1
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minimum = -1
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print("Calibration :")
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pygame.display.flip()
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for i in range(50) :
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line = float(ser.readline())
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if line < minimum or minimum < 0:
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minimum = line
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if line > maximum:
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maximum = line
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print("Go :")
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while True:
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line = float(ser.readline())
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valueR = int(255*(line-minimum)/(maximum-minimum))
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if valueR < 0:
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valueR = 0
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if valueR > 255:
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valueR = 255
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screen.fill((valueR, 0, 0))
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pygame.display.flip()
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ser.close()
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except Exception:
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print("Error while fetching data from serial.")
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