使用Openmv驱动OLED

liluan_sama 2019-08-02 05:37:24

想使用openmv控制0.96寸OLED显示，不是LCD

但是一来没有例程和库函数，二来没有找到有人做过；

自己写了半天配置，屏幕无显示，求解哪里错了？有没有人试过？求营养回答！！！

# SPI Control   0.96 OLED未完



import sensor, image, time

from pyb import Pin, SPI



gram = [ [0] * 8 for i in range(128)]

cs  = Pin("P3", Pin.OUT_OD)

rst = Pin("P7", Pin.OUT_PP)

rs  = Pin("P8", Pin.OUT_PP)

# The hardware SPI bus for your OpenMV Cam is always SPI bus 2.

spi = SPI(2, SPI.MASTER, baudrate=int(1000000000/66), polarity=0, phase=0)



def write_command_byte(c):

    cs.low()

    rs.low()

    spi.send(c)

    cs.high()



def write_data_byte(c):

    cs.low()

    rs.high()

    spi.send(c)

    cs.high()



def write_command(c, *data):

    write_command_byte(c)

    if data:

        for d in data: write_data_byte(d)



def write_image(img):

    cs.low()

    rs.high()

    spi.send(img)

    cs.high()

def write_string(*s):

    if s:

        for d in s: write_data_byte(d)

# Reset the OLED.

def reset_oled():

    rst.low()

    time.sleep(100)

    rst.high()

    time.sleep(100)



# 开启OLED显示

def display_on():

    write_command_byte(0x8D)

    time.sleep(120)

    write_command_byte(0x14)

    time.sleep(120)

    write_command_byte(0xAF) # Sleep Exit

    time.sleep(120)

# 关闭OLED显示

def display_off():

    write_command_byte(0x8D)

    time.sleep(120)

    write_command_byte(0x10)

    time.sleep(120)

    write_command_byte(0xAE) # Sleep

    time.sleep(120)



#更新显存到LCD

def OLED_Refresh_Gram():

    for i in range(0,8):

        write_command_byte (0xb0+i)    #设置页地址（0~7）

        write_command_byte (0x00)      #设置显示位置—列低地址

        write_command_byte (0x10)      #设置显示位置—列高地址

        for n in range(0,128):

            write_string(gram[n][i])



# 画点函数

def draw_point(x,y,t):

    if(x>127|y>63):return;

    temp = 1<<(7-(y%8))

    if(t):gram[x][7-y//8]|=temp

    else:gram[x][7-y//8]&=~temp

# 填充函数x1<=x2;y1<=y2 0<=x1<=127 0<=y1<=63

def OLED_Fill(x1,y1,x2,y2,dot) :

    for x in range(x1,x2):

        for y in range(y1,y2):

            draw_point(x,y,dot)

    OLED_Refresh_Gram()

reset_oled()

time.sleep(120)

display_on()

time.sleep(120)



while(True):

    OLED_Fill(20,5,108,58,1)

    time.sleep(120)