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PUTCHAR.C
Package: 19lcd.rar [view]
Upload User: yp1668
Upload Date: 2016-06-08
Package Size: 22k
Code Size: 1k
Category:
Communication-Mobile
Development Platform:
Visual C++
- //putchar.c
- extern void sendc(unsigned char val);
- extern void sendd(unsigned char val);
- bit isline0;
- char putchar (char c) {
- unsigned char i;
- if (c == 'n') {//利用换行符对LCD上下行换地址
- if(isline0){//isline0为1,则显示第一行
- sendc(0x80);
- for(i=0;i<16;i++)
- sendd(' ');//写数据之前先将所有显示清零,即显示空格
- sendc(0x80);
- isline0=!isline0;
- }
- else{
- sendc(0xc0);
- for(i=0;i<16;i++)
- sendd(' ');
- sendc(0xc0);
- isline0=!isline0;
- }
- }
- else
- sendd(c);
- }