树莓派应用HYG12864显示信息

创意&设计 CN-P5 820℃ 0评论
内容纲要

0x00

经过研究成功用树莓派驱动HYG12864,但是这个屏幕使用的US1601S芯片并没有字库。想通过小屏幕显示派的IP、温度、订阅的新闻没有汉字很不方便,又研究了一下成功通过python外挂了国标GB2312字库来显示中文。同时用洞洞板焊接起来屏幕和双排12P插座做成了树莓派扩展板。

扩展板展示

底板是树莓派zero w 已焊接排针
背面

正面

侧面

连接树莓派

图片显示

软件

已更改代码使用python3,请注意。

#-*- coding: UTF-8 -*-
import RPi.GPIO as GPIO
import subprocess, time, binascii

LCD_CS = 7   #P0 BOARD
LCD_RES = 11  #P2
LCD_A0 = 13   #P3
LCD_SCK = 15  #P1
LCD_SDA = 16   #P4

def get_cpu_temp():
    tempFile = open("/sys/class/thermal/thermal_zone0/temp")
    cpu_temp = tempFile.read()
    tempFile.close
    return float(cpu_temp) / 1000

def get_gpu_temp():
    gpu_temp = subprocess.getoutput("/opt/vc/bin/vcgencmd measure_temp").replace('temp=', '').replace('\'C', '')
    return float(gpu_temp)

def main():
    io_init()
    lcd_init()
    while True:
        #lcd_ascii168_string(0, 0, "abcdefghij")
        #lcd_ascii168_string(56, 0, "klmnop")
        lcd_ascii168_string(0, 0, "This你好asd、。")
        lcd_ascii168_string(0, 2, "这是神奇的字符")
        lcd_ascii168_string(0, 4, "[CPU温度: %.2f]" % get_cpu_temp())
        lcd_ascii168_string(0, 6, "[GPU温度: %.2f]" % get_gpu_temp())
        time.sleep(2)
        lcd_picture(0,0,0)
        time.sleep(2)

def io_init():
    GPIO.setmode(GPIO.BOARD)
    GPIO.setwarnings(False)
    GPIO.setup(LCD_CS, GPIO.OUT)
    GPIO.setup(LCD_RES, GPIO.OUT)
    GPIO.setup(LCD_A0, GPIO.OUT)
    GPIO.setup(LCD_SCK, GPIO.OUT)
    GPIO.setup(LCD_SDA, GPIO.OUT)

def lcd_init():
    GPIO.output(LCD_CS, True)
    GPIO.output(LCD_RES, False)
    GPIO.output(LCD_RES, True)
    lcd_transfer_data(0xe2, 0)
    #time.sleep(2)
    lcd_transfer_data(0xae, 0)   #关闭显示输出
    lcd_transfer_data(0xa0, 0)   #DDRAM地址
    lcd_transfer_data(0xc4, 0)   #Set LCD Mapping Control
    lcd_transfer_data(0x88, 0)   #Set RAM Address Control
    lcd_transfer_data(0xa6, 0)   #Set The LCD Display(Normal)
    lcd_transfer_data(0xa4, 0)   #Sets Display all points 0: normal display
    lcd_transfer_data(0xa1, 0)   #Set Frame Rate 1=100fps
    lcd_transfer_data(0x2f, 0)   #Set Power Control : Internal VLCD
    lcd_transfer_data(0x26, 0)   # Set Temperature Compensation : 10b=-0.15%, 00b=0%
    lcd_transfer_data(0x81, 0)   #Set VBIAS Potentiometer
    lcd_transfer_data(0xc0, 0)   #
    lcd_transfer_data(0xaf, 0)   #Display ON
    lcd_clear()

def lcd_picture(xPos, yPos, char):
    for i in range(0, 8):
        lcd_set_page(yPos + i, xPos)
        for j in range(128 * i, 128 * (i + 1)): 
            lcd_transfer_data(PICTURE[char][j], 1)

def lcd_ascii168_string(xPos, yPos, string):
    stringLen = len(string)
    for i in range(0, stringLen):
        if(ord(string[i]) > 128):
            lcd_china_string(xPos + i * 8, yPos, string[i])
            #中文字符占位要补齐
            xPos += 8
        else:
            lcd_ascii168(xPos + i * 8, yPos, ord(string[i]) - 32)

def lcd_ascii168(xPos, yPos, char):
    lcd_set_page(yPos, xPos)
    for i in range(0, 8): 
        lcd_transfer_data(ASCII168[char][i], 1)
    lcd_set_page(yPos + 1, xPos)   
    for i in range(8, 16): 
        lcd_transfer_data(ASCII168[char][i], 1)

def lcd_china_string(xPos, yPos, string):
    KEYS = [0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01]
    #获取中文的编码
    gb2312 = string.encode('gb2312')
    hex_str = binascii.b2a_hex(gb2312)
    result = str(hex_str, encoding='utf-8')
    #根据编码计算在汉字库中的位置
    area = eval('0x' + result[:2]) - 0xA0
    index = eval('0x' + result[2:]) - 0xA0
    offset = (94 * (area-1) + (index-1)) * 32
    #area=所在区号 index=所在区里的索引号 offset=偏移位置
    #print(area,index,offset)
    font_rect = None
    #读取汉字库文件中当前字的数据 字库取模使用 阴码 先列后行(列行式) 低位在前(逆向) 生成二进制国标文件
    with open("./GB2312.FON", "rb") as f:
        #从当前位置读取文字上半部份的数据
        f.seek(offset)
        font_rect = f.read(16)
        lcd_set_page(yPos, xPos)
        for i in range(0, 16): 
            lcd_transfer_data(font_rect[i], 1)
        lcd_set_page(yPos + 1, xPos)
        #从上半部份尾部读取文字下半部份的数据
        f.seek(offset+16)
        font_rect = f.read(16)
        for i in range(0, 16): 
            lcd_transfer_data(font_rect[i], 1)

def lcd_clear():
    GPIO.output(LCD_CS, False)
    for i in range(0, 8):            
        lcd_set_page(i, 0)
        for j in range(0, 128):                                           
            lcd_transfer_data(0x00,1)
    GPIO.output(LCD_CS, True)

def lcd_set_page(page, column):
    lcd_transfer_data(((page & 0xf) | 0xb0), 0)
    lcd_transfer_data((((column & 0xf0) >> 4) | 0x10), 0)
    lcd_transfer_data((column & 0x0f), 0)

def lcd_transfer_data(value, SI):
    GPIO.output(LCD_CS, False)
    GPIO.output(LCD_SCK, True)
    if (SI):
        GPIO.output(LCD_A0, True)
    else:
        GPIO.output(LCD_A0, False)
    lcd_byte(value)
    GPIO.output(LCD_CS, True)

def lcd_set_contrast(value):
    lcd_transfer_data(0x80, 0)
    lcd_transfer_data(value, 0)

def lcd_byte(bits):
    tmp = bits;
    for i in range(0, 8): 
        GPIO.output(LCD_SCK, False)
        if (tmp & 0x80):
            GPIO.output(LCD_SDA, True)
        else:
            GPIO.output(LCD_SDA, False)
        tmp = (tmp < < 1)
        GPIO.output(LCD_SCK, True)

ASCII168 = (
    (0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00),#" ",0
    (0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00),#"!",1
    (0x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00),#""",2
    (0x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00),#"#",3
    (0x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00),#"$",4
    (0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00),#"%",5
    (0x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10),#"&",6
    (0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00),#",",7
    (0x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00),#"(",8
    (0x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00),#")",9
    (0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00),#"*",10
    (0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00),#"+",11
    (0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00),#",",12
    (0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01),#"-",13
    (0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00),#".",14
    (0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00),#"/",15
    (0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00),#"0",16
    (0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00),#"1",17
    (0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00),#"2",18
    (0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00),#"3",19
    (0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00),#"4",20
    (0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00),#"5",21
    (0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00),#"6",22
    (0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00),#"7",23
    (0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00),#"8",24
    (0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00),#"9",25
    (0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00),#":",26
    (0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00),#";",27
    (0x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00),#"<",28
    (0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00),#"=",29
    (0x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00),#">",30
    (0x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00),#"?",31
    (0xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00),#"@",32
    (0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20),#"A",33
    (0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00),#"B",34
    (0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00),#"C",35
    (0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00),#"D",36
    (0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00),#"E",37
    (0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00),#"F",38
    (0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00),#"G",39
    (0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20),#"H",40
    (0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00),#"I",41
    (0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00),#"J",42
    (0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00),#"K",43
    (0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00),#"L",44
    (0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00),#"M",45
    (0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00),#"N",46
    (0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00),#"O",47
    (0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00),#"P",48
    (0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00),#"Q",49
    (0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20),#"R",50
    (0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00),#"S",51
    (0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00),#"T",52
    (0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00),#"U",53
    (0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00),#"V",54
    (0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00),#"W",55
    (0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20),#"X",56
    (0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00),#"Y",57
    (0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00),#"Z",58
    (0x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00),#"[",59
    (0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00),#"/",60
    (0x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00),#"]",61
    (0x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00),#"^",62
    (0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01),#"-",63
    (0x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00),#"\",64
    (0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20),#"a",65
    (0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00),#"b",66
    (0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00),#"c",67
    (0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20),#"d",68
    (0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00),#"e",69
    (0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00),#"f",70
    (0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00),#"g",71
    (0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20),#"h",72
    (0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00),#"i",73
    (0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00),#"j",74
    (0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00),#"k",75
    (0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00),#"l",76
    (0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F),#"m",77
    (0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20),#"n",79
    (0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00),#"o",80
    (0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00),#"p",81
    (0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80),#"q",82
    (0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00),#"r",83
    (0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00),#"s",84
    (0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00),#"t",85
    (0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20),#"u",86
    (0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00),#"v",87
    (0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00),#"w",88
    (0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00),#"x",89
    (0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00),#"y",90
    (0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00),#"z",91
    (0x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40),#"{",92
    (0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00),#"|",93
    (0x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00),#"}",94
    (0x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00),#"~",95
)
PICTURE = (
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)
main()

源码附件

源码和字库下载:度盘:https://pan.baidu.com/s/1fnR8VxVo7MNcXyO56gaJYQ提取码:r5vy

转载请注明:黑白的自留地 » 树莓派应用HYG12864显示信息

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