EEPW论坛

首先声明近日二叔杂事较多，基本完全拷贝卓大的帖子啦

http://www.52pi.net/forum.php?mod=viewthread&tid=1384

有木有发现，两个问题，日期不居中，难看，时间也不对，

网络搜索，时区设置，

tzselect

5 - 9 - 1 - 1，不过运行起来问题依旧，重起也不管用，仔细一读，原来没有应用，

TZ='Asia/Shanghai'; export TZ

重起失效，可以写到.profile，

vi .profile

#include <stdio.h>
#include <wiringPi.h>
#include <mcp23017.h>
#include <lcd.h>
#include <time.h>
int main()
{
        time_t timep;
        struct tm *ptm;
        int display,i;
        wiringPiSetup();
        mcp23017Setup (100, 0x20);
        for(i=0;i<16;i++)
          pinMode(100+i,OUTPUT);
        digitalWrite(107,1);
        digitalWrite(101,0);
        display=lcdInit(2,16,4,100,102,103,104,105,106,0,0,0,0);
        lcdHome(display);
        lcdClear(display);
        while(1)
        {
                time(&timep);
                ptm=localtime(&timep);
                lcdPosition(display,3,0);
                lcdPrintf(display,"%04d/%02d/%02d",1900+ptm->tm_year, 1+ptm->tm_mon, ptm-

>tm_mday);
                lcdPosition(display,4,1);
                lcdPrintf(display,"%02d:%02d:%02d",ptm->tm_hour, ptm->tm_min, ptm->tm_sec);
                delay(100);
        }
}

gcc lcd1602.c  -lwiringPi  /opt/gpio-lib/WiringBPi_Beta_V2.0/devLib/lcd.o -o lcd1602
./lcd162

好啦，这次搞定啦，还是居中漂亮吧