我用LPC2131接24064液晶（型号Ocmj4×15D 控制器8822 金鹏产品）不知为什么屏幕没显示 调试发现程序总是停留在判忙信号检测上，谢谢提供解决方法，程序如下 数据口接P0.0~P0.7
#include "config.h"
uint8 tab1[]={
"冷箱 ℃ 时钟显示 : : "
"冷头 ℃ 休眠停止 : "
"冷台 ℃ 休眠开始 : "
"冷刀 ℃ "};
#define lcd_rs 1<<8
#define lcd_wr 1<<9
#define lcd_rd 1<<10
#define lcd_cs1 1<<12
#define lcd_cs2 1<<13
#define lcd_busy 1<<17
#define lcd_int 1<<18
#define lcd_rst 1<<19
/*********************************************************************************************/
void delay(uint16 k)
{
uint16 i;
for(i=0;i<k;i++);
}
void delay1(uint32 ms)
{
uint32 i,j;
for(i=0;i<ms;i++)
for(j=0;j<400;j++);
}
//=============================================
void lcd_regwr(uint8 regnada)
{ IO0CLR = 0xff; //先清零
IO0SET = regnada; //再送数
IO0CLR = lcd_cs1; // chip enable.
IO0SET = lcd_rd; //
IO0CLR = lcd_rs; // rs = 0;
IO0CLR = lcd_wr; // wr = 0;
delay(10);
IO0SET = lcd_wr; // wr = 1;
IO0SET = lcd_rs; // rs = 1;
IO0SET = lcd_cs1; // chip disable.
}
void lcd_regwrite(uint8 regname,uint8 regdata)
{ //写资料到缓存器
lcd_regwr(regname);
delay(10);
lcd_regwr(regdata);
}
//.............................................
void lcd_datawrite(uint8 wrdata)
{ //写资料到DDRAM
while(!(IO0PIN&lcd_busy) == 0);
IO0CLR = 0xff; //先清零
IO0SET = wrdata; //再送数
IO0CLR = lcd_cs1; // chip enable.
IO0SET = lcd_rd; //
IO0SET = lcd_rs; // rs = 1;
IO0CLR = lcd_wr; // wr = 0;
delay(10);
IO0SET = lcd_wr; // wr = 1;
IO0SET = lcd_rs; // rs = 1;
IO0SET = lcd_cs1; // chip disable.
}
//.............................................
uint8 lcd_regread(uint8 regname)
{ //读缓存器
uint8 reg_rddata;
lcd_regwr(regname);
IO0DIR=0x00;
IO0SET = 0xff;
IO0CLR = lcd_cs1; // chip enable.
IO0SET = lcd_wr; // wr = 1;
IO0CLR = lcd_rs; // rs = 0;
IO0CLR = lcd_rd; // rd = 0;
;
reg_rddata = (IO0PIN&0xff);
IO0SET = lcd_rd; // rd = 1;
IO0SET = lcd_rs; // rs = 1;
IO0SET = lcd_cs1; // chip disable.
IO0DIR=0xff;
return(reg_rddata);
}
//.............................................
void gotoxy(uint8 x,uint8 y)
{ //定坐标
lcd_regwrite(0x60,x); // active window top register(awtr)
lcd_regwrite(0x70,y); // active window top register(awtr)
}
//=============================================
void lcd_reset(void)
{ //上电复位
delay1(800); // delay 120ms 等待上电复位
IO0SET = 0x000e37ff; // lcd_rs/wr/rd/cs1/cs2 normal - skeep high.
}
//.............................................
void lcd_initial(void)
{ //初始化
lcd_regwrite(0x00,0xc9); // lcd control register(lcr)
lcd_regwrite(0x01,0xf2); // misc.register(mir)
lcd_regwrite(0x02,0x10); // advance power setup register(apsr)
lcd_regwrite(0x03,0x80); // advance display setup regiser(adsr)
lcd_regwrite(0x10,0x6b); // cursor control register(ccr)
lcd_regwrite(0x11,0x00); // distance of word or lines register(dwlr)
lcd_regwrite(0x12,0x91); // memory access mode register(awrr)
lcd_regwrite(0x21,0x1d); // display window right register(dwrr)
lcd_regwrite(0x31,0x3f); // display window bottom register(dwbr)
lcd_regwrite(0x41,0x00); // display window left register(dwlr)
lcd_regwrite(0x51,0x00); // display window top register(dwtr)
lcd_regwrite(0x20,0x1d); // active window right register(awrr)
lcd_regwrite(0x30,0x3f); // active window bottom register(awbr)
lcd_regwrite(0x40,0x00); // active window left register(awlr)
lcd_regwrite(0x50,0x00); // active window top register(awtr)
lcd_regwrite(0x60,0x00); // cursor position x register(cpxr)
lcd_regwrite(0x61,0x00); // begin segment position register(bgsg)
lcd_regwrite(0x70,0x00); // cursor position y register(cpyr)
lcd_regwrite(0x71,0x00); // shift action range,begin commom register(bgcm)
lcd_regwrite(0x72,0x3f); // shift action range,end commom register(edcm)
lcd_regwrite(0x80,0xaa); // blink time register(btr)
lcd_regwrite(0x81,0x00); // frame rate polarity change at common_fa register(fdca)
lcd_regwrite(0x91,0x00); // frame rate polarity change at common_fb register(fdcb)
lcd_regwrite(0x90,0x1e); // shift clock control register(sccr)
lcd_regwrite(0xa0,0x08); // interrupt setup & status register(frcb)
lcd_regwrite(0xa1,0xf1); // key scan control register(kscr)
lcd_regwrite(0xa2,0x00); // key scan data register(ksdr)
lcd_regwrite(0xa3,0x00); // key scan data expand register(kser)
lcd_regwrite(0xb0,0x1d); // interrupt column setup register(intx)
lcd_regwrite(0xb1,0x3f); // interrupt row setup register(inty)
lcd_regwrite(0xc0,0x00); // touch panel control register(tpcr)
lcd_regwrite(0xc1,0x0a); // adc status register(adcs)
lcd_regwrite(0xc8,0x80); // touch panel segment high byte data register(tpxr)
lcd_regwrite(0xc9,0x80); // touch panel common high byte data register(tpyr)
lcd_regwrite(0xca,0x00); // touch panel segment/common low byte data register(tpzr)
lcd_regwrite(0xd0,0x80); // lcd contrast control register (lccr)
lcd_regwrite(0xe0,0x00); // pattern data register(pdr)
lcd_regwrite(0xf0,0xa0); // font control register(fcr)
lcd_regwrite(0xf1,0x0f); // font size control register
}
//.............................................
//.............................................
void lcd_character(uint8 *cha,uint8 count)
{ //显示中文或字符
uint8 i;
for(i=0;i<count;i++)
{
lcd_datawrite(*cha);
++cha;
}
}
int main (void)
{
PINSEL0=0x00000000;
PINSEL1=0x00000000;
IO0DIR=0x000e37ff; //设置输出口
IO0SET=0x000e37ff;
lcd_reset();
lcd_initial(); //初始化中 液晶关显示
lcd_regwrite(0x10,0x6b);
lcd_regwrite(0x00,0xcd); // 液晶开显示
gotoxy(0x00,0x00); //设定显示位置
lcd_character(tab1,120);
while(1);
return 0;
} |
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