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‎GLCD Protractor/PCD8544.py

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from micropython import const
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from pyb import Pin, SPI
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from utime import sleep_ms
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from ustruct import pack
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import framebuf
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PCD8544_DC_pin = 'X2'
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PCD8544_CS_pin = 'X3'
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PCD8544_RST_pin = 'X1'
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PCD8544_SCK_pin = 'X6'
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PCD8544_MOSI_pin = 'X8'
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PCD8544_FUNCTION_SET = const(0x20)
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PCD8544_POWER_DOWN = const(0x04)
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PCD8544_ADDRESSING_VERT = const(0x02)
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PCD8544_EXTENDED_INSTR = const(0x01)
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PCD8544_DISPLAY_BLANK = const(0x08)
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PCD8544_DISPLAY_ALL = const(0x09)
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PCD8544_DISPLAY_NORMAL = const(0x0C)
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PCD8544_DISPLAY_INVERSE = const(0x0D)
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PCD8544_TEMP_COEFF_0 = const(0x04)
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PCD8544_TEMP_COEFF_1 = const(0x05)
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PCD8544_TEMP_COEFF_2 = const(0x06)
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PCD8544_TEMP_COEFF_3 = const(0x07)
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PCD8544_BIAS_1_100 = const(0x10)
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PCD8544_BIAS_1_80 = const(0x11)
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PCD8544_BIAS_1_65 = const(0x12)
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PCD8544_BIAS_1_48 = const(0x13)
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PCD8544_BIAS_1_40 = const(0x14)
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PCD8544_BIAS_1_24 = const(0x15)
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PCD8544_BIAS_1_18 = const(0x16)
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PCD8544_BIAS_1_10 = const(0x17)
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PCD8544_SET_VOP = const(0x80)
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PCD8544_COL_ADDR = const(0x80)
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PCD8544_BANK_ADDR = const(0x40)
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CMD = False
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DAT = True
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LOW = False
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HIGH = True
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PCD8544_GLCD_WIDTH = const(84)
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PCD8544_GLCD_HEIGHT = const(48)
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class PCD8544(framebuf.FrameBuffer):
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def __init__(self):
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self.width = PCD8544_GLCD_WIDTH
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self.height = PCD8544_GLCD_HEIGHT
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self.BLACK = const(0xFF)
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self.WHITE = const(0x00)
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self.PCD8544_CS = Pin(PCD8544_CS_pin, Pin.OUT_PP)
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self.PCD8544_RST = Pin(PCD8544_RST_pin, Pin.OUT_PP)
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self.PCD8544_SCK = Pin(PCD8544_SCK_pin, Pin.OUT_PP)
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self.PCD8544_MOSI = Pin(PCD8544_MOSI_pin, Pin.OUT_PP)
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self.PCD8544_SPI = SPI(1, SPI.CONTROLLER, baudrate = 4_000_000, polarity = 0, phase = 0)
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self.PCD8544_DC = Pin(PCD8544_DC_pin, Pin.OUT_PP)
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self.buffer = bytearray((self.height * self.width) // 8) #84 x 48 = 504
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super().__init__(self.buffer, self.width, self.height, framebuf.MONO_VLSB)
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self.init()
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def init(self):
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self.function = PCD8544_FUNCTION_SET
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self.disp_reset()
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self.addressing(True)
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self.set_contrast(PCD8544_BIAS_1_40, PCD8544_TEMP_COEFF_2, 63)
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self.disp_invert(False)
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self.clear()
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def disp_reset(self):
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self.PCD8544_CS.value(HIGH)
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self.PCD8544_DC.value(HIGH)
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self.PCD8544_RST.value(HIGH)
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sleep_ms(10)
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self.PCD8544_RST.value(LOW)
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sleep_ms(20)
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self.PCD8544_RST.value(HIGH)
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def send(self, value, mode):
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self.PCD8544_CS.value(LOW)
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self.PCD8544_DC.value(mode)
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if(mode == DAT):
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self.PCD8544_SPI.write(pack('B'*len(value), *value))
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else:
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self.PCD8544_SPI.write(bytearray([value]))
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self.PCD8544_CS.value(HIGH)
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def set_xy(self, x_pos, y_pos):
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self.send((PCD8544_COL_ADDR | x_pos), CMD)
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self.send((PCD8544_BANK_ADDR | y_pos), CMD)
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def addressing(self, horizontal_or_vertical = True):
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if(horizontal_or_vertical == True):
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self.function &= ~PCD8544_ADDRESSING_VERT
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else:
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self.function |= PCD8544_ADDRESSING_VERT
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self.send(self.function, CMD)
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def clear(self):
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self.send(([0] * 504), DAT) #84 x 48 = 504
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self.set_xy(0, 0)
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def disp_invert(self, mode):
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if(mode == True):
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self.send(PCD8544_DISPLAY_INVERSE, CMD)
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else:
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self.send(PCD8544_DISPLAY_NORMAL, CMD)
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def disp_power(self, mode):
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if(mode == True):
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self.function &= ~PCD8544_POWER_DOWN
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else:
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self.function |= PCD8544_POWER_DOWN
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self.send(self.function, CMD)
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def set_contrast(self, bias = PCD8544_BIAS_1_40, t_coff = PCD8544_TEMP_COEFF_2, contrast = 63):
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self.send((self.function | PCD8544_EXTENDED_INSTR), CMD)
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self.send(t_coff, CMD)
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self.send(bias, CMD)
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self.send(PCD8544_SET_VOP | contrast, CMD)
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self.send((self.function & ~PCD8544_EXTENDED_INSTR), CMD)
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def show(self):
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self.send(self.buffer, DAT)
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‎GLCD Protractor/img.bmp

602 Bytes
Binary file not shown.

‎GLCD Protractor/main.py

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from PCD8544 import PCD8544
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from pyb import Accel, LED
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from utime import sleep_ms
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import framebuf
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import math
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degrees = 0
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led_1 = LED(3)
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led_2 = LED(4)
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glcd = PCD8544()
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glcd.fill(glcd.WHITE)
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glcd.show()
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accel = Accel()
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img = framebuf.FrameBuffer(bytearray(
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b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x80\xc0\xe0\xe0\x70\x30\xf8\xf8\x98\x1c\x7c\xfc\xee\x06\x1e'
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b'\x7e\x7e\x06\x06\x06\x7e\x7e\x06\x06\x06\x7e\x7e\x7e\x06\xce\xfc\x7c\x1c\x98\xf8\xf8\x30\x70\xe0\xe0\xc0\xc0\x80\x00\x00\x00\x00'
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b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc0\xe0\xf0\x38\x3c\x7c\xe6\xc7\x0f\x3d\x39\x01'
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b'\x07\x07\x04\x00\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x03'
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b'\x01\x00\x06\x07\x03\x11\x3d\x1f\xcf\xe7\xfe\x7c\x38\x70\xe0\xc0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc0\xf0\xfc\x9e\x1f'
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b'\x3b\x33\x33\x07\x06\x00\x00\x00\x00\x00\x00\x00\x00\xc0\xc0\xe0\x70\x38\x18\x0c\x0c\x06\x06\x07\x03\x03\x03\x03\x03\x03\x03\x03'
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b'\x03\x03\x03\x03\x03\x06\x06\x0c\x0c\x1c\x38\x30\x70\xe0\xc0\x00\x00\x00\x00\x00\x00\x00\x00\x06\x07\x23\x73\x33\x3f\x9e\xbc\xf0'
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b'\xc0\x00\x00\x00\x00\xf0\xfe\x9f\x3b\x31\x33\x33\x03\x00\x00\x00\x00\x00\x00\x00\xc0\xf0\x7c\x1e\x0f\x03\x01\x00\x00\x00\x00\x00'
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b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x07\x0f\x3c\xf0\xc0'
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b'\x00\x00\x00\x00\x00\x00\x00\x03\x13\x33\x33\x39\x1f\xff\xf8\x80\xfe\xff\x3b\x33\x33\x33\x01\x00\x00\x00\x00\x00\x00\x00\x00\xf8'
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b'\xff\x8f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
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b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\xff\xfe\x00\x00\x00\x00\x00\x00\x00\x00\x00\x33\x33\x33\x39\xff\xff\x07\x0f\x0f\x03'
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b'\x03\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x0f\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
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b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0e\x0f\x03\x00\x00\x00\x00\x00\x00\x00'
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b'\x00\x00\x03\x03\x03\x03\x0f\x0f'),
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76, 48, framebuf.MONO_VLSB)
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def show_value(value):
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glcd.text("Deg:" + str("%3.1f" %value), 6, 1, glcd.BLACK)
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glcd.line(42, 47, (42 + int(28 * math.sin(value * 0.0175))), int(47 - (28 * math.cos(value * 0.0175))), glcd.BLACK)
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def map_value(v, x_min, x_max, y_min, y_max):
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return (y_min + (((y_max - y_min) / (x_max - x_min)) * (v - x_min)))
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def contrain(value, min_value, max_value):
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if(value > max_value):
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return max_value
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elif(value < min_value):
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return min_value
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else:
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return value
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while(True):
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acc_x, acc_y, acc_z = accel.filtered_xyz()
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degrees = contrain(acc_x, -80, 80)
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degrees = map_value(degrees, -80, 80, -90, 90)
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glcd.fill(glcd.WHITE)
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glcd.blit(img, 3, 10)
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glcd.ellipse(42, 47, 3, 3, glcd.BLACK, True)
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show_value(degrees)
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i = int(map_value(degrees, -90, 90, 0, 255))
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led_1.intensity(i)
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led_2.intensity(255 - i)
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glcd.show()
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sleep_ms(600)

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