這是基于avr的，希望有大神能移植成51的。
- // Drive a LCD1602 with 2 wire
- //===================================================
- //ICC-AVR application builder : 2010-10-3 19:30:02
- // Target : M16
- // Crystal: 4.0000Mhz
- #include <iom16v.h>
- #include <macros.h>
- #define Set_E PORTB|=2
- #define Clr_E PORTB&=~2
- #define Set_D PORTB|=1
- #define Clr_D PORTB&=~1
- #define Set_xy(y,x) Send(0,(y<<6)|(x&15)|0x80)
- //===================================================
- void init_devices(void)
- { CLI(); //disable all interrupts
- DDRB = 0x03;
- MCUCR = 0x00;
- GICR = 0x00;
- SEI(); //re-enable interrupts
- }
- //===================================================
- void Delay(unsigned int i)
- {
- while(i--);
- }
- //===================================================
- void Send(unsigned char RS, unsigned char dat)
- {
- unsigned char i;
- for (i = 2; i > 0; i--)
- {
- if (dat & 0x80) Set_D; else Clr_D;
- Delay(10608);//14520us
- if (RS) Set_E;
- if (dat & 0x40) Set_D; else Clr_D;
- Delay(462); //660us
- if (dat & 0x20) Set_D; else Clr_D;
- Delay(18); //30us
- Set_E;
- if (dat & 0x10) Set_D; else Clr_D;
- _NOP(); //0.5us < t < 1.36us
- Clr_E;
- dat <<= 4;
- }
- }
- //===================================================
- void init_1602(void)
- {
- unsigned char i = 3;
- Clr_D;
- Clr_E;
- Delay(10608);
- do{
- Clr_D;
- Delay(462);
- Set_D;
- Set_E;
- Delay(18);
- if (i == 0) Clr_D;
- _NOP();_NOP();_NOP();
- Clr_E;
- }while(i--);
- Send(0,0x28);
- Send(0,0x01);
- Send(0,0x0f);
- }
- //===================================================
- void Send_S(unsigned char *p)
- {
- while(*p) Send(1,*p++);
- }
- //===================================================
- void main(void)
- {
- unsigned char i;
- init_devices();
- init_1602();
- Set_xy(0,2);
- Send_S("Hello world!");
- Set_xy(1,3);
- Send_S("I'm COWBOY.");
- for (i=0;i<255;i++) Delay(10000);
- Send(0,0x01);
- Set_xy(0,3);
- Send_S("Welcome to");
- Set_xy(1,1);
- Send_S("www*ourdev*cn");
- while(1);
- }
仿真文件和全部代碼下載：
1602-2.zip
(7.64 KB, 下載次數: 24)
2016-5-14 12:06 上傳
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