320 lines
9.7 KiB
Python
320 lines
9.7 KiB
Python
# -*- coding:UTF-8 -*-
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##
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# | file : LCD_1IN44.py
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# | version : V2.0
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# | date : 2018-07-16
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# | function : On the ST7735S chip driver and clear screen, drawing lines, drawing, writing
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# and other functions to achieve
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documnetation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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import RPi.GPIO as GPIO
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import time
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import numpy as np
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from . import config
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LCD_1IN44 = 1
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LCD_1IN8 = 0
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if LCD_1IN44 == 1:
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LCD_WIDTH = 128 #LCD width
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LCD_HEIGHT = 128 #LCD height
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LCD_X = 2
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LCD_Y = 1
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if LCD_1IN8 == 1:
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LCD_WIDTH = 160
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LCD_HEIGHT = 128
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LCD_X = 1
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LCD_Y = 2
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LCD_X_MAXPIXEL = 132 #LCD width maximum memory
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LCD_Y_MAXPIXEL = 162 #LCD height maximum memory
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#scanning method
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L2R_U2D = 1
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L2R_D2U = 2
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R2L_U2D = 3
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R2L_D2U = 4
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U2D_L2R = 5
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U2D_R2L = 6
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D2U_L2R = 7
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D2U_R2L = 8
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SCAN_DIR_DFT = U2D_R2L
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class LCD:
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def __init__(self):
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GPIO.setmode(GPIO.BCM)
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self.width = LCD_WIDTH
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self.height = LCD_HEIGHT
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self.LCD_Scan_Dir = SCAN_DIR_DFT
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self.LCD_X_Adjust = LCD_X
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self.LCD_Y_Adjust = LCD_Y
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""" Hardware reset """
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def LCD_Reset(self):
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GPIO.output(config.LCD_RST_PIN, GPIO.HIGH)
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config.Driver_Delay_ms(100)
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GPIO.output(config.LCD_RST_PIN, GPIO.LOW)
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config.Driver_Delay_ms(100)
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GPIO.output(config.LCD_RST_PIN, GPIO.HIGH)
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config.Driver_Delay_ms(100)
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""" Write register address and data """
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def LCD_WriteReg(self, Reg):
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GPIO.setmode(GPIO.BCM)
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GPIO.setup(config.LCD_DC_PIN, GPIO.OUT)
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GPIO.output(config.LCD_DC_PIN, GPIO.LOW)
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config.SPI_Write_Byte([Reg])
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def LCD_WriteData_8bit(self, Data):
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GPIO.output(config.LCD_DC_PIN, GPIO.HIGH)
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config.SPI_Write_Byte([Data])
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def LCD_WriteData_NLen16Bit(self, Data, DataLen):
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GPIO.output(config.LCD_DC_PIN, GPIO.HIGH)
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for i in range(0, DataLen):
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config.SPI_Write_Byte([Data >> 8])
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config.SPI_Write_Byte([Data & 0xff])
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""" Common register initialization """
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def LCD_InitReg(self):
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#ST7735R Frame Rate
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self.LCD_WriteReg(0xB1)
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self.LCD_WriteData_8bit(0x01)
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self.LCD_WriteData_8bit(0x2C)
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self.LCD_WriteData_8bit(0x2D)
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self.LCD_WriteReg(0xB2)
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self.LCD_WriteData_8bit(0x01)
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self.LCD_WriteData_8bit(0x2C)
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self.LCD_WriteData_8bit(0x2D)
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self.LCD_WriteReg(0xB3)
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self.LCD_WriteData_8bit(0x01)
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self.LCD_WriteData_8bit(0x2C)
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self.LCD_WriteData_8bit(0x2D)
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self.LCD_WriteData_8bit(0x01)
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self.LCD_WriteData_8bit(0x2C)
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self.LCD_WriteData_8bit(0x2D)
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#Column inversion
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self.LCD_WriteReg(0xB4)
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self.LCD_WriteData_8bit(0x07)
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#ST7735R Power Sequence
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self.LCD_WriteReg(0xC0)
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self.LCD_WriteData_8bit(0xA2)
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self.LCD_WriteData_8bit(0x02)
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self.LCD_WriteData_8bit(0x84)
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self.LCD_WriteReg(0xC1)
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self.LCD_WriteData_8bit(0xC5)
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self.LCD_WriteReg(0xC2)
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self.LCD_WriteData_8bit(0x0A)
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self.LCD_WriteData_8bit(0x00)
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self.LCD_WriteReg(0xC3)
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self.LCD_WriteData_8bit(0x8A)
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self.LCD_WriteData_8bit(0x2A)
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self.LCD_WriteReg(0xC4)
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self.LCD_WriteData_8bit(0x8A)
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self.LCD_WriteData_8bit(0xEE)
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self.LCD_WriteReg(0xC5)#VCOM
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self.LCD_WriteData_8bit(0x0E)
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#ST7735R Gamma Sequence
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self.LCD_WriteReg(0xe0)
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self.LCD_WriteData_8bit(0x0f)
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self.LCD_WriteData_8bit(0x1a)
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self.LCD_WriteData_8bit(0x0f)
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self.LCD_WriteData_8bit(0x18)
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self.LCD_WriteData_8bit(0x2f)
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self.LCD_WriteData_8bit(0x28)
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self.LCD_WriteData_8bit(0x20)
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self.LCD_WriteData_8bit(0x22)
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self.LCD_WriteData_8bit(0x1f)
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self.LCD_WriteData_8bit(0x1b)
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self.LCD_WriteData_8bit(0x23)
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self.LCD_WriteData_8bit(0x37)
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self.LCD_WriteData_8bit(0x00)
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self.LCD_WriteData_8bit(0x07)
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self.LCD_WriteData_8bit(0x02)
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self.LCD_WriteData_8bit(0x10)
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self.LCD_WriteReg(0xe1)
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self.LCD_WriteData_8bit(0x0f)
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self.LCD_WriteData_8bit(0x1b)
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self.LCD_WriteData_8bit(0x0f)
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self.LCD_WriteData_8bit(0x17)
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self.LCD_WriteData_8bit(0x33)
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self.LCD_WriteData_8bit(0x2c)
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self.LCD_WriteData_8bit(0x29)
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self.LCD_WriteData_8bit(0x2e)
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self.LCD_WriteData_8bit(0x30)
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self.LCD_WriteData_8bit(0x30)
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self.LCD_WriteData_8bit(0x39)
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self.LCD_WriteData_8bit(0x3f)
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self.LCD_WriteData_8bit(0x00)
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self.LCD_WriteData_8bit(0x07)
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self.LCD_WriteData_8bit(0x03)
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self.LCD_WriteData_8bit(0x10)
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#Enable test command
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self.LCD_WriteReg(0xF0)
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self.LCD_WriteData_8bit(0x01)
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#Disable ram power save mode
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self.LCD_WriteReg(0xF6)
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self.LCD_WriteData_8bit(0x00)
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#65k mode
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self.LCD_WriteReg(0x3A)
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self.LCD_WriteData_8bit(0x05)
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#********************************************************************************
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#function: Set the display scan and color transfer modes
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#parameter:
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# Scan_dir : Scan direction
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# Colorchose : RGB or GBR color format
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#********************************************************************************
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def LCD_SetGramScanWay(self, Scan_dir):
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#Get the screen scan direction
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self.LCD_Scan_Dir = Scan_dir
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#Get GRAM and LCD width and height
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if (Scan_dir == L2R_U2D) or (Scan_dir == L2R_D2U) or (Scan_dir == R2L_U2D) or (Scan_dir == R2L_D2U) :
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self.width = LCD_HEIGHT
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self.height = LCD_WIDTH
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if Scan_dir == L2R_U2D:
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MemoryAccessReg_Data = 0X00 | 0x00
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elif Scan_dir == L2R_D2U:
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MemoryAccessReg_Data = 0X00 | 0x80
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elif Scan_dir == R2L_U2D:
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MemoryAccessReg_Data = 0x40 | 0x00
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else: #R2L_D2U:
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MemoryAccessReg_Data = 0x40 | 0x80
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else:
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self.width = LCD_WIDTH
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self.height = LCD_HEIGHT
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if Scan_dir == U2D_L2R:
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MemoryAccessReg_Data = 0X00 | 0x00 | 0x20
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elif Scan_dir == U2D_R2L:
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MemoryAccessReg_Data = 0X00 | 0x40 | 0x20
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elif Scan_dir == D2U_L2R:
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MemoryAccessReg_Data = 0x80 | 0x00 | 0x20
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else: #R2L_D2U
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MemoryAccessReg_Data = 0x40 | 0x80 | 0x20
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#please set (MemoryAccessReg_Data & 0x10) != 1
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if (MemoryAccessReg_Data & 0x10) != 1:
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self.LCD_X_Adjust = LCD_Y
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self.LCD_Y_Adjust = LCD_X
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else:
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self.LCD_X_Adjust = LCD_X
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self.LCD_Y_Adjust = LCD_Y
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# Set the read / write scan direction of the frame memory
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self.LCD_WriteReg(0x36) #MX, MY, RGB mode
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if LCD_1IN44 == 1:
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self.LCD_WriteData_8bit( MemoryAccessReg_Data | 0x08) #0x08 set RGB
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else:
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self.LCD_WriteData_8bit( MemoryAccessReg_Data & 0xf7) #RGB color filter panel
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#/********************************************************************************
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#function:
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# initialization
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#********************************************************************************/
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def LCD_Init(self, Lcd_ScanDir):
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if (config.GPIO_Init() != 0):
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return -1
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#Turn on the backlight
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#GPIO.setup(config.LCD_BL_PIN, GPIO.OUT)
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GPIO.output(config.LCD_BL_PIN,GPIO.HIGH)
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#Hardware reset
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self.LCD_Reset()
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#Set the initialization register
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self.LCD_InitReg()
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#Set the display scan and color transfer modes
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self.LCD_SetGramScanWay(Lcd_ScanDir)
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config.Driver_Delay_ms(200)
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#sleep out
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self.LCD_WriteReg(0x11)
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config.Driver_Delay_ms(120)
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#Turn on the LCD display
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self.LCD_WriteReg(0x29)
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#/********************************************************************************
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#function: Sets the start position and size of the display area
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#parameter:
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# Xstart : X direction Start coordinates
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# Ystart : Y direction Start coordinates
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# Xend : X direction end coordinates
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# Yend : Y direction end coordinates
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#********************************************************************************/
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def LCD_SetWindows(self, Xstart, Ystart, Xend, Yend):
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#set the X coordinates
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self.LCD_WriteReg(0x2A)
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self.LCD_WriteData_8bit(0x00)
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self.LCD_WriteData_8bit((Xstart & 0xff) + self.LCD_X_Adjust)
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self.LCD_WriteData_8bit(0x00)
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self.LCD_WriteData_8bit(((Xend - 1) & 0xff) + self.LCD_X_Adjust)
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#set the Y coordinates
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self.LCD_WriteReg (0x2B)
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self.LCD_WriteData_8bit(0x00)
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self.LCD_WriteData_8bit((Ystart & 0xff) + self.LCD_Y_Adjust)
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self.LCD_WriteData_8bit(0x00)
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self.LCD_WriteData_8bit(((Yend - 1) & 0xff )+ self.LCD_Y_Adjust)
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self.LCD_WriteReg(0x2C)
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def LCD_Clear(self):
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#hello
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_buffer = [0xff]*(self.width * self.height * 2)
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self.LCD_SetWindows(0, 0, self.width, self.height)
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GPIO.output(config.LCD_DC_PIN, GPIO.HIGH)
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for i in range(0,len(_buffer),4096):
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config.SPI_Write_Byte(_buffer[i:i+4096])
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def LCD_ShowImage(self,Image,Xstart,Ystart):
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if (Image == None):
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return
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imwidth, imheight = Image.size
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if imwidth != self.width or imheight != self.height:
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raise ValueError('Image must be same dimensions as display \
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({0}x{1}).' .format(self.width, self.height))
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img = np.asarray(Image)
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pix = np.zeros((self.width,self.height,2), dtype = np.uint8)
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pix[...,[0]] = np.add(np.bitwise_and(img[...,[0]],0xF8),np.right_shift(img[...,[1]],5))
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pix[...,[1]] = np.add(np.bitwise_and(np.left_shift(img[...,[1]],3),0xE0),np.right_shift(img[...,[2]],3))
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pix = pix.flatten().tolist()
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self.LCD_SetWindows(0, 0, self.width , self.height)
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GPIO.output(config.LCD_DC_PIN, GPIO.HIGH)
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for i in range(0,len(pix),4096):
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config.SPI_Write_Byte(pix[i:i+4096])
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