6pdh 发布的帖子

6pdh

@kidswong999 不是寄存器问题，我感觉是SPI配置的问题，可否指点一下

6pdh

这里是代码

## OpenMV 驱动自己的LCD屏
# 驱动IC ST7789
# 分辨率 240*240 QVGA 1.54寸
import time
from pyb import Pin, SPI

# IO接线：
# SDO/MISO  ---> P1(MISO)   		如果不读LCD颜色，可不接
# LED       ---> P6 (背光控制) 		可直接 接VCC，开机亮屏
# SCK       ---> P2(SCLK)			SCLK 时钟线
# SDI/MOSI  ---> P0(MOSI)			SDA 数据线
# DO/RS     ---> P8					数据命令选择线
# RESET     ---> P7					复位线
# CS        ---> P5					片选线
# GND       ---> GND
# VCC       ---> 3.3V

cs  = Pin("P5", 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

# 定义横屏/竖屏
USE_HORIZONTAL  = True         # 定义横屏
IMAGE_INVER     = True         # 旋转180°

# TFT resolution 240*320
X_MIN_PIXEL = 0
Y_MIN_PIXEL = 0
if USE_HORIZONTAL:
    X_MAX_PIXEL = 240               # 定义屏幕宽度
    Y_MAX_PIXEL = 240               # 定义屏幕高度
else:
    X_MAX_PIXEL = 240               # 定义屏幕宽度
    Y_MAX_PIXEL = 240               # 定义屏幕高度

# 常用颜色表 						#可去除
RED     = 0XF800
GREEN   = 0X07E0
BLUE    = 0X001F
BLACK   = 0X0000
YELLOW  = 0XFFE0
WHITE   = 0XFFFF

CYAN    = 0X07FF
BRIGHT_RED = 0XF810
GRAY1   = 0X8410
GRAY2   = 0X4208

# OpenMV  SPI2 总线  8位数据模式
spi = SPI(2, SPI.MASTER, polarity=0, phase=0)

# 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(data):
    cs.low()
    rs.high()
    spi.send(data)
    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 > 0xFF:
                write_data_byte(d >> 8)
                write_data_byte(d&0xFF)
            else:
                write_data_byte(d)

def write_image(img):
    SetRegion(0, 0, sensor.height()-1 , sensor.width()-1 )
    cs.low()
    rs.high()
    fbuf = bytearray(500)#建立帧缓冲区，对于每个RGB565像素，帧缓冲区都需2字节
    fbuf=img.bytearray()
    spi.send(fbuf)
    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,sensor.height()):		#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 SetXY(xpos, ypos):
    write_command(0x2A, xpos>>8, xpos&0XFF)
    write_command(0x2B, ypos>>8, ypos&0XFF)
    write_command(0x2C)

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)

# 在指定位置绘制一个点
def DrawPoint(x, y, Color):
    SetXY(x, y)
    write_data_byte(Color >> 8)
    write_data_byte(Color&0XFF)

def ReadPoint(x, y):
    data = 0
    SetXY(x, y)
    write_data_byte(data)
    return data

def Clear(Color):
    global X_MAX_PIXEL, Y_MAX_PIXEL
    SetRegion(0, 0, X_MAX_PIXEL-1 , Y_MAX_PIXEL-1 )
    #cs.low()
    #rs.high()
    for i in range(0, Y_MAX_PIXEL):
        for m in range(0, X_MAX_PIXEL):
            write_data_byte(Color >> 8)
            write_data_byte(Color&0xFF)

def LCDinit():
    SetRegion(0, 0, X_MAX_PIXEL-1 , Y_MAX_PIXEL-1 )
    rst.low()
    time.sleep_ms(100)
    rst.high()
    time.sleep_ms(100)
    bl.high()   # 拉背光
    write_command(0x11)
    time.sleep_ms(120)

    # Memory Data Access Control
    if USE_HORIZONTAL:      # //C8   //48 68竖屏//28 E8 横屏
        if IMAGE_INVER:
            write_command(0x36, 0x00)   # 从右到左 e8/68
        else:
            write_command(0x36, 0xC0)   # 从左到右 28
    else:
        if IMAGE_INVER:
            write_command(0x36, 0x70)   # 从下到上刷
        else:
            write_command(0x36, 0xA0)   # 从上到下刷

    write_command(0x3A,0x05)

    write_command(0xB2, 0x0C, 0x0C, 0x00, 0x33, 0x33)

    write_command(0xB7, 0x35)

    write_command(0xBB, 0x32)

    write_command(0xC2,0x01)

    write_command(0xc3,0x15)

    write_command(0xc4,0x20)

    write_command(0xC6,0x05)

    write_command(0xD0,0xA4,0xA1)

    write_command(0xE0,0xD0,0x08,0x0E,0x09,0x09,0x05,0x31,0x33,0x48,0x17,0x14,0x15,0x31,0x34)

    write_command(0xE1,0xD0,0x08,0x0E,0x09,0x09,0x15,0x31,0x33,0x48,0x17,0x14,0x15,0x31,0x34)
    # Interface Pixel Format


    write_command(0x21)

    # Display On
    write_command(0x29)
    #write_command(0x2C)


def LCDDisplay(img):
    #write_command(0x2C)
    write_image(img)



import sensor, image, cpufreq, time
sensor.reset() # Initialize the camera sensor.
sensor.set_vflip(True)
sensor.set_pixformat(sensor.RGB565) # or sensor.GRAYSCALE
sensor.set_framesize(sensor.QVGA) # Special 128x160 framesize for LCD Shield.
cpufreq.set_frequency(480)
spi.init(SPI.MASTER,prescaler=2)
LCDinit() # Initialize the lcd screen.
Clear(WHITE)
clock = time.clock()
print(spi)
while(True):

    clock.tick()
    #sensor.snapshot()
    #sensor.alloc_extra_fb(sensor.width(),sensor.height(),20000)
    LCDDisplay(sensor.snapshot()) # Take a picture and display the image.
    #print(sensor.snapshot())
    #print("帧率 : ",clock.fps())

6pdh

我尝试了一下使用您发的例程中直接将图片数据传入SPI.send()，帧率确实流畅了，但是屏幕变成了花屏，画面发生变化的屏幕也会发生变化，说明确实是有一定的数据传输过来了，请指教一下

6pdh

你可以使用颜色识别扫描出两个色块，然后再分别赋值即可

6pdh

0_1633923993604_微信图片_20211011114429.png

请在这里粘贴代码
## OpenMV 驱动自己的LCD屏
# 驱动IC ILI9341
# 分辨率 240*240 QVGA 1.54寸
import time
from pyb import Pin, SPI

# IO接线：
# SDO/MISO  ---> P1(MISO)   		如果不读LCD颜色，可不接
# LED       ---> P6 (背光控制) 		可直接 接VCC，开机亮屏
# SCK       ---> P2(SCLK)			SCLK 时钟线
# SDI/MOSI  ---> P0(MOSI)			SDA 数据线
# DO/RS     ---> P8					数据命令选择线
# RESET     ---> P7					复位线
# CS        ---> P5					片选线
# GND       ---> GND
# VCC       ---> 3.3V

cs  = Pin("P5", 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

# 定义横屏/竖屏
USE_HORIZONTAL  = True         # 定义横屏
IMAGE_INVER     = True         # 旋转180°

# TFT resolution 240*320
X_MIN_PIXEL = 0
Y_MIN_PIXEL = 0
if USE_HORIZONTAL:
    X_MAX_PIXEL = 240               # 定义屏幕宽度
    Y_MAX_PIXEL = 240               # 定义屏幕高度
else:
    X_MAX_PIXEL = 240               # 定义屏幕宽度
    Y_MAX_PIXEL = 240               # 定义屏幕高度

# 常用颜色表 						#可去除
RED     = 0XF800
GREEN   = 0X07E0
BLUE    = 0X001F
BLACK   = 0X0000
YELLOW  = 0XFFE0
WHITE   = 0XFFFF

CYAN    = 0X07FF
BRIGHT_RED = 0XF810
GRAY1   = 0X8410
GRAY2   = 0X4208

# OpenMV  SPI2 总线  8位数据模式
spi = SPI(2, SPI.MASTER,baudrate=48000000,prescaler=1,polarity=0, phase=0,bits=8,firstbit=SPI.MSB)

# 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(data):
    cs.low()
    rs.high()
    spi.send(data)
    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 > 0xFF:
                write_data_byte(d >> 8)
                write_data_byte(d&0xFF)
            else:
                write_data_byte(d)

def write_image(img):
    SetRegion(0, 0, sensor.height()-1 , sensor.width()-1 )
    cs.low()
    rs.high()
    fbuf = bytearray(500)#建立帧缓冲区，对于每个RGB565像素，帧缓冲区都需2字节
    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,sensor.height()):		#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 SetXY(xpos, ypos):
    write_command(0x2A, xpos>>8, xpos&0XFF)
    write_command(0x2B, ypos>>8, ypos&0XFF)
    write_command(0x2C)

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)

# 在指定位置绘制一个点
def DrawPoint(x, y, Color):
    SetXY(x, y)
    write_data_byte(Color >> 8)
    write_data_byte(Color&0XFF)

def ReadPoint(x, y):
    data = 0
    SetXY(x, y)
    write_data_byte(data)
    return data

def Clear(Color):
    global X_MAX_PIXEL, Y_MAX_PIXEL
    SetRegion(0, 0, X_MAX_PIXEL-1 , Y_MAX_PIXEL-1 )
    #cs.low()
    #rs.high()
    for i in range(0, Y_MAX_PIXEL):
        for m in range(0, X_MAX_PIXEL):
            write_data_byte(Color >> 8)
            write_data_byte(Color&0xFF)

def LCDinit():
    SetRegion(0, 0, X_MAX_PIXEL-1 , Y_MAX_PIXEL-1 )
    rst.low()
    time.sleep_ms(100)
    rst.high()
    time.sleep_ms(100)
    bl.high()   # 拉背光
    write_command(0x11)
    time.sleep_ms(120)

    # Memory Data Access Control
    if USE_HORIZONTAL:      # //C8   //48 68竖屏//28 E8 横屏
        if IMAGE_INVER:
            write_command(0x36, 0x00)   # 从右到左 e8/68
        else:
            write_command(0x36, 0xC0)   # 从左到右 28
    else:
        if IMAGE_INVER:
            write_command(0x36, 0x70)   # 从下到上刷
        else:
            write_command(0x36, 0xA0)   # 从上到下刷

    write_command(0x3A,0x05)

    write_command(0xB2, 0x0C, 0x0C, 0x00, 0x33, 0x33)

    write_command(0xB7, 0x35)

    write_command(0xBB, 0x32)

    write_command(0xC2,0x01)

    write_command(0xc3,0x15)

    write_command(0xc4,0x20)

    write_command(0xC6,0x05)

    write_command(0xD0,0xA4,0xA1)

    write_command(0xE0,0xD0,0x08,0x0E,0x09,0x09,0x05,0x31,0x33,0x48,0x17,0x14,0x15,0x31,0x34)

    write_command(0xE1,0xD0,0x08,0x0E,0x09,0x09,0x15,0x31,0x33,0x48,0x17,0x14,0x15,0x31,0x34)
    # Interface Pixel Format


    write_command(0x21)

    # Display On
    write_command(0x29)
    #write_command(0x2C)


def LCDDisplay(img):
    #write_command(0x2C)
    write_image(img)



import sensor, image, cpufreq, time
sensor.reset() # Initialize the camera sensor.
sensor.set_vflip(True)
sensor.set_pixformat(sensor.RGB565) # or sensor.GRAYSCALE
sensor.set_framesize(sensor.QVGA) # Special 128x160 framesize for LCD Shield.
cpufreq.set_frequency(480)
spi.init(SPI.MASTER,prescaler=2)
LCDinit() # Initialize the lcd screen.
Clear(WHITE)
clock = time.clock()
print(spi)
while(True):

    clock.tick()
    #sensor.snapshot()
    #sensor.alloc_extra_fb(sensor.width(),sensor.height(),20000)
    LCDDisplay(sensor.snapshot()) # Take a picture and display the image.
    #print(sensor.snapshot())
    #print("帧率 : ",clock.fps())