12864显示屏控制程序，不显示，求高手 给检查下原因
我是把一个8051的c语言程序翻译成 python程序的：python程序如下：
#!/usr/bin/env python3
# encoding: utf-8
import RPi.GPIO as GPIO
import time
#psb接高电平
RS = 17
#E(或EN)端为使能(enable)端,高电平（1）时读取信息，负跳变时执行指令
E = 27
RES = 18
#WRD is RW
WRD = 21
DPIN = (22,23,24,25,12,16,5,6)
HANZI_STR="hello you hello you hello you hello you hello you hello you hello you hello you "
def main():
init0()
initial()
byte_array = bytes(HANZI_STR,'gb18030')
lcd_mesg(byte_array)
time.sleep(3)
def init0():
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(RS, GPIO.OUT)
GPIO.setup(E, GPIO.OUT)
GPIO.setup(RES, GPIO.OUT)
GPIO.setup(WRD, GPIO.OUT)
for pin in DPIN:
print(pin)
GPIO.setup(pin, GPIO.OUT)
def initial():
GPIO.output(RES,0)
time.sleep(0.01)
GPIO.output(RES,1)
time.sleep(0.01)
TransferData(0x30,0)
time.sleep(0.01)
TransferData(0x30,0)
time.sleep(0.01)
TransferData(0x08,0)
time.sleep(0.01)
TransferData(0x10,0)
time.sleep(0.01)
TransferData(0x0C,0)
time.sleep(0.01)
TransferData(0x01,0)
time.sleep(0.01)
TransferData(0x06,0)
time.sleep(0.01)
def lcd_mesg(str):
TransferData(0x80,0)
time.sleep(0.01)
for i in range(32):
TransferData(str,1)
TransferData(0x90,0)
time.sleep(0.01)
for i in range(32,64):
TransferData(str,1)
def TransferData(byte,di):
GPIO.output(WRD,0)
GPIO.output(RS,di)
time.sleep(0.001)
dataout(byte)
GPIO.output(E,1)
time.sleep(0.001)
GPIO.output(E,0)
#output to dpin
def dataout(byte):
x = 0x01
for n in range(8):
if byte&x == x:
GPIO.output(DPIN, 1)
else:
GPIO.output(DPIN, 0)
x<<1
if __name__ == '__main__':
try:
main()
except KeyboardInterrupt:
pass
finally:
print('cleaning')
原来的c语言程序如下：
#include <stdio.h>
#include <math.h>
#include <reg52.h>
#include <string.h>
unsigned char code IC_DAT[];
unsigned char code pic1[];
unsigned char code pic2[];
unsigned char code pic3[];
sbit RS =P2^0;
sbit WRD=P2^1;
sbit E=P2^2;
sbit PSB=P2^4;
sbit RES=P2^5;
void TransferData(char data1,bit DI);
void display(void);
void display_grapic(void);
void delayms(unsigned int n);
void DisplayLine(unsigned char line1,unsigned char line2);
void DisplayGraphic(unsigned char code *adder);
void delay(unsigned int m);
void lcd_mesg(unsigned char code *adder1);
unsigned char code IC_DAT[]={
"泉州海创电子科技"
"单片机开发板系列"
"中文字库测试程序"
"恭喜发财身体健康"
};
unsigned char code IC_DAT2[]={
"海纳百川宽容为先"
"欲成大业诚信为先"
"游弋商海济世为先"
"人立于世守法为先"
};
void initinal(void) //LCD字库初始化程序
{
delay(40); //大于40MS的延时程序
PSB=1; //设置为8BIT并口工作模式
delay(1); //延时
RES=0; //复位
delay(1); //延时
RES=1; //复位置高
delay(10);
TransferData(0x30,0);//Extended Function Set :8BIT设置,RE=0: basic instruction set, G=0 :graphic display OFF
delay(100); //大于100uS的延时程序
TransferData(0x30,0);//Function Set
delay(37); ////大于37uS的延时程序
TransferData(0x08,0);//Display on Control
delay(100); //大于100uS的延时程序
TransferData(0x10,0);//Cursor Display Control光标设置
delay(100); //大于100uS的延时程序
TransferData(0x0C,0);//Display Control,D=1,显示开
delay(100); //大于100uS的延时程序
TransferData(0x01,0);//Display Clear
delay(10); //大于10mS的延时程序
TransferData(0x06,0);//Enry Mode Set,光标从右向左加1位移动
delay(100); //大于100uS的延时程序
}
void initina2(void) //LCD显示图片(扩展)初始化程序
{
delay(40); //大于40MS的延时程序
PSB=1; //设置为8BIT并口工作模式
delay(1); //延时
RES=0; //复位
delay(1); //延时
RES=1; //复位置高
delay(10);
TransferData(0x36,0);//Extended Function Set RE=1: extended instruction
delay(100); //大于100uS的延时程序
TransferData(0x36,0);//Extended Function Set:RE=1: extended instruction set
delay(37); ////大于37uS的延时程序
TransferData(0x3E,0);//EXFUNCTION(DL=8BITS,RE=1,G=1)
delay(100); //大于100uS的延时程序
TransferData(0x01,0);//CLEAR SCREEN
delay(100); //大于100uS的延时程序
}
void main(void)
{
while(1)
{
initina2(); //调用LCD显示图片(扩展)初始化程序
DisplayGraphic(pic2);//显示图片2
delayms(200);
DisplayGraphic(pic3);//显示图片3
delayms(200);
initinal(); //调用LCD字库初始化程序
delay(100); //大于100uS的延时程序
lcd_mesg(IC_DAT); //显示中文汉字1
delayms(240);
delayms(240);
initinal(); //调用LCD字库初始化程序
delay(100); //大于100uS的延时程序
lcd_mesg(IC_DAT2); //显示中文汉字2
delayms(240);
delayms(240);
}
}
void lcd_mesg(unsigned char code *adder1)
{
unsigned char i;
TransferData(0x80,0);//Set Graphic Display RAM Address
delay(100);
for(i=0;i<32;i++)
{
TransferData(*adder1,1);
adder1++;
}
TransferData(0x90,0);//Set Graphic Display RAM Address
delay(100);
for(i=32;i<64;i++)
{
TransferData(*adder1,1);
adder1++;
}
}
voidTransferData(char data1,bit DI)//传送数据或者命令,当DI=0是,传送命令,当DI=1,传送数据.
{
WRD=0;
RS=DI;
delay(1);
P0=data1;
E=1;
delay(1);
E=0;
}
void delayms(unsigned int n) //延时10×n毫秒程序
{
unsigned int i,j;
for(i=0;i<n;i++)
for(j=0;j<2000;j++);
}
void delay(unsigned int m) //延时程序
{
unsigned int i,j;
for(i=0;i<m;i++)
for(j=0;j<10;j++);
}
void DisplayGraphic(unsigned char code *adder)
{
int i,j;
//*******显示上半屏内容设置
for(i=0;i<32;i++) //
{
TransferData((0x80 + i),0); //SET垂直地址 VERTICAL ADD
TransferData(0x80,0); //SET水平地址 HORIZONTAL ADD
for(j=0;j<16;j++)
{
TransferData(*adder,1);
adder++;
}
}
//*******显示下半屏内容设置
for(i=0;i<32;i++) //
{
TransferData((0x80 + i),0); //SET 垂直地址 VERTICAL ADD
TransferData(0x88,0); //SET 水平地址 HORIZONTAL ADD
for(j=0;j<16;j++)
{
TransferData(*adder,1);
adder++;
}
}
}
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