LCD使用的display库的资料请问在哪里找?以下两行代码在display库中怎么替换?
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lcd.display(img,x_size=320) lcd.init(width=320,height=240,triple_buffer=False,rbg=True)
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如果使用自己的LCD屏,帧率特别低应该如何调整?
#函数名: myLCD.py 要把这个函数和主函数一起放在OpenMV的根文件中(也就是U盘)才可以互相调用。 import time from pyb import Pin, SPI cs = Pin("P3", Pin.OUT_OD) rst = Pin("P7", Pin.OUT_PP) rs = Pin("P8", Pin.OUT_PP) bl = Pin("P6", Pin.OUT_PP) # 背光控制 spi = SPI(2, SPI.MASTER, baudrate=20*1000000, polarity=1, phase=0,bits=8) # SPI 写命令 def write_command_byte(c): cs.low() rs.low() spi.send(c) cs.high() # SPI 写数据 def write_data_byte(c): cs.low() rs.high() spi.send(c) cs.high() def write_command(c, *data): #命令数据一起写,先写命令 第二个开始为数据位。如果只写一个,则代表不写数据只写命令。 write_command_byte(c) if data: for d in data: if d > 255: write_data_byte(d >> 8) write_data_byte(d&0xFF) else: write_data_byte(d) def write_image(img): cs.low() rs.high() fbuf = bytearray(320) for m in img: #把一帧图像的对象取出来,放到帧缓存区中 fbuf=m for i in range(0,320): #每行每行的发送 spi.send(fbuf[i]>>8) #先发第N行的第I个数据的高八位 spi.send(fbuf[i]&0xFF) #再发低八位 cs.high() def SetRegion(xStar, yStar, xEnd, yEnd): write_command(0x2A, xStar>>8, xStar&0XFF, xEnd>>8, xEnd&0XFF) write_command(0x2B, yStar>>8, yStar&0XFF, yEnd>>8, yEnd&0XFF) write_command(0x2C) def LCDinit(): rst.low() time.sleep_ms(100) rst.high() time.sleep_ms(100) write_command(0xCB, 0x39, 0x2c, 0x00, 0x34, 0x02) write_command(0xCF, 0x00, 0XAA, 0XE0) write_command(0xE8, 0x85, 0x11, 0x78) write_command(0xEA, 0x00, 0x00) write_command(0xED, 0x67, 0x03, 0X12, 0X81) write_command(0xF7, 0x20) write_command(0xC0, 0x21) # Power control, VRH[5:0] write_command(0xC1, 0x11) # Power control, SAP[2:0];BT[3:0] write_command(0xC5, 0x24, 0x3C) # VCM control, 对比度调节 write_command(0xC7, 0xB7) # VCM control2, -- write_command(0x36, 0xE8) X_MIN_PIXEL = 0 Y_MIN_PIXEL = 0 X_MAX_PIXEL = 320 # 定义屏幕宽度 Y_MAX_PIXEL = 240 # 定义屏幕高度 SetRegion(0, 0, X_MAX_PIXEL - 1, Y_MAX_PIXEL - 1) write_command(0x3A, 0x55) write_command(0xB1, 0x00, 0x18) write_command(0xB6, 0x08, 0x82, 0x27) # Display Function Control write_command(0xF2, 0x00) # 3Gamma Function Disable write_command(0x26, 0x01) # Gamma curve selected write_command(0xB7, 0x06) write_command(0xE0, 0x0F, 0x31, 0x2B, 0x0C, 0x0E, 0x08, 0x4E, 0xF1, 0x37, 0x07, 0x10, 0x03, 0x0E, 0x09, 0x00) write_command(0XE1, 0x00, 0x0E, 0x14, 0x03, 0x11, 0x07, 0x31, 0xC1, 0x48, 0x08, 0x0F, 0x0C, 0x31, 0x36, 0x0F) write_command(0x11) # sleep_ms Exit time.sleep_ms(120) write_command(0x29) write_command(0x2C) bl.high() # 拉背光 def LCDdisplay(img): write_command(0x2C) write_image(img)