RGB1602.py

   1 # -*- coding: utf-8 -*-
   2 import time
   3 from machine import Pin,I2C
   4
   5 RGB1602_SDA = Pin(4)
   6 RGB1602_SCL = Pin(5)
   7
   8 RGB1602_I2C = I2C(0,sda = RGB1602_SDA,scl = RGB1602_SCL ,freq = 400000)
   9
  10 #Device I2C Arress
  11 LCD_ADDRESS   =  (0x7c>>1)
  12 RGB_ADDRESS   =  (0xc0>>1)
  13
  14 #color define
  15
  16 REG_RED    =     0x04
  17 REG_GREEN  =     0x03
  18 REG_BLUE   =     0x02
  19 REG_MODE1  =     0x00
  20 REG_MODE2  =     0x01
  21 REG_OUTPUT =     0x08
  22 LCD_CLEARDISPLAY = 0x01
  23 LCD_RETURNHOME = 0x02
  24 LCD_ENTRYMODESET = 0x04
  25 LCD_DISPLAYCONTROL = 0x08
  26 LCD_CURSORSHIFT = 0x10
  27 LCD_FUNCTIONSET = 0x20
  28 LCD_SETCGRAMADDR = 0x40
  29 LCD_SETDDRAMADDR = 0x80
  30
  31 #flags for display entry mode
  32 LCD_ENTRYRIGHT = 0x00
  33 LCD_ENTRYLEFT = 0x02
  34 LCD_ENTRYSHIFTINCREMENT = 0x01
  35 LCD_ENTRYSHIFTDECREMENT = 0x00
  36
  37 #flags for display on/off control
  38 LCD_DISPLAYON = 0x04
  39 LCD_DISPLAYOFF = 0x00
  40 LCD_CURSORON = 0x02
  41 LCD_CURSOROFF = 0x00
  42 LCD_BLINKON = 0x01
  43 LCD_BLINKOFF = 0x00
  44
  45 #flags for display/cursor shift
  46 LCD_DISPLAYMOVE = 0x08
  47 LCD_CURSORMOVE = 0x00
  48 LCD_MOVERIGHT = 0x04
  49 LCD_MOVELEFT = 0x00
  50
  51 #flags for function set
  52 LCD_8BITMODE = 0x10
  53 LCD_4BITMODE = 0x00
  54 LCD_2LINE = 0x08
  55 LCD_1LINE = 0x00
  56 LCD_5x8DOTS = 0x00
  57
  58
  59 class RGB1602:
  60   def __init__(self, col, row):
  61     self._row = row
  62     self._col = col
  63
  64     self._showfunction = LCD_4BITMODE | LCD_1LINE | LCD_5x8DOTS;
  65     self.begin(self._row,self._col)
  66
  67
  68   def command(self,cmd):
  69     RGB1602_I2C.writeto_mem(LCD_ADDRESS, 0x80, chr(cmd))
  70
  71   def write(self,data):
  72     RGB1602_I2C.writeto_mem(LCD_ADDRESS, 0x40, chr(data))
  73
  74   def setReg(self,reg,data):
  75     RGB1602_I2C.writeto_mem(RGB_ADDRESS, reg, chr(data))
  76
  77
  78   def setRGB(self,r,g,b):
  79     self.setReg(REG_RED,r)
  80     self.setReg(REG_GREEN,g)
  81     self.setReg(REG_BLUE,b)
  82
  83   def setCursor(self,col,row):
  84     if(row == 0):
  85       col|=0x80
  86     else:
  87       col|=0xc0;
  88     RGB1602_I2C.writeto(LCD_ADDRESS, bytearray([0x80,col]))
  89
  90   def clear(self):
  91     self.command(LCD_CLEARDISPLAY)
  92     time.sleep(0.002)
  93   def printout(self,arg):
  94     if(isinstance(arg,int)):
  95       arg=str(arg)
  96
  97     for x in bytearray(arg,'utf-8'):
  98       self.write(x)
  99
 100
 101   def display(self):
 102     self._showcontrol |= LCD_DISPLAYON
 103     self.command(LCD_DISPLAYCONTROL | self._showcontrol)
 104
 105
 106   def begin(self,cols,lines):
 107     if (lines > 1):
 108         self._showfunction |= LCD_2LINE
 109
 110     self._numlines = lines
 111     self._currline = 0
 112
 113
 114
 115     time.sleep(0.05)
 116
 117
 118     # Send function set command sequence
 119     self.command(LCD_FUNCTIONSET | self._showfunction)
 120     #delayMicroseconds(4500);  # wait more than 4.1ms
 121     time.sleep(0.005)
 122     # second try
 123     self.command(LCD_FUNCTIONSET | self._showfunction);
 124     #delayMicroseconds(150);
 125     time.sleep(0.005)
 126     # third go
 127     self.command(LCD_FUNCTIONSET | self._showfunction)
 128     # finally, set # lines, font size, etc.
 129     self.command(LCD_FUNCTIONSET | self._showfunction)
 130     # turn the display on with no cursor or blinking default
 131     self._showcontrol = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF
 132     self.display()
 133     # clear it off
 134     self.clear()
 135     # Initialize to default text direction (for romance languages)
 136     self._showmode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT
 137     # set the entry mode
 138     self.command(LCD_ENTRYMODESET | self._showmode);
 139     # backlight init
 140     self.setReg(REG_MODE1, 0)
 141     # set LEDs controllable by both PWM and GRPPWM registers
 142     self.setReg(REG_OUTPUT, 0xFF)
 143     # set MODE2 values
 144     # 0010 0000 -> 0x20  (DMBLNK to 1, ie blinky mode)
 145     self.setReg(REG_MODE2, 0x20)
 146     self.setColorWhite()
 147
 148   def setColorWhite(self):
 149     self.setRGB(255, 255, 255)