- #include <STC15F2K60S2.h>
- #include <iic.h>
- void Timer0Init(void) //1毫秒@11.0592MHz
- {
- AUXR |= 0x80; //定时器时钟1T模式
- TMOD &= 0xF0; //设置定时器模式
- TL0 = 0xCD; //设置定时初值
- TH0 = 0xD4; //设置定时初值
- TF0 = 0; //清除TF0标志
- TR0 = 1; //定时器0开始计时
- EA =1 ;
- ET0=1;
- }
- bit flag500ms = 0;
- unsigned char code str1[] = "Kingst Studio";
- unsigned char code str2[] = "Let's move...";
- extern void InitLcd1602();
- extern void LcdShowStr(unsigned char x, unsigned char y,unsigned char *str, unsigned char len);
- void main()
- {
-
- unsigned char i = 0;
- unsigned char index = 0;
- unsigned char pdata bufMove1[16 + sizeof(str1) + 16];
- unsigned char pdata bufMove2[16 + sizeof(str2) + 16];
- unsigned char adc_val;
- unsigned char str[10];
- P2=0xa0;P0=0;P2=0;
- Timer0Init();
- InitLcd1602();
- write_adc(0x00);
- for(i=0; i<16; i++)
- {
- bufMove1[i] = ' ';
- bufMove2[i] = ' ';
- }
- for(i=0; i<(sizeof(str1)-1); i++)
- {
- bufMove1[16 + i] = str1[i];
- bufMove2[16 + i] = str2[i];
- }
- for(i=(16 + sizeof(str1)-1); i<sizeof(bufMove1); i++)
- {
- bufMove1[i] = ' ';
- bufMove2[i] = ' ';
- }
- while (1)
- {
- if (flag500ms) //??500msò??ˉò?′??á??
- {
- flag500ms = 0;
- adc_val=read_adc(0x00);
- str[0] = adc_val/100+'0';
- str[1] = adc_val/10%10+'0';
- str[2] = adc_val%10+'0';
- // LcdShowStr(0,0,str,3);
-
-
- LcdShowStr(0, 0, bufMove1 + index, 16);
- LcdShowStr(0, 1, bufMove2 + index, 16);
- index++;
- if(index >= (16 + sizeof(str1)-1))
- {
- index = 0;
- }
- }
- }
- }
- void InterruptTimer0() interrupt 1
- {
- static unsigned int tmr500ms = 0;
-
- tmr500ms++;
- if (tmr500ms >= 500)
- {
- tmr500ms = 0;
- flag500ms = 1;
- }
- }#include <STC15F2K60S2.h>
- #include <iic.h>
- void Timer0Init(void) //1毫秒@11.0592MHz
- {
- AUXR |= 0x80; //定时器时钟1T模式
- TMOD &= 0xF0; //设置定时器模式
- TL0 = 0xCD; //设置定时初值
- TH0 = 0xD4; //设置定时初值
- TF0 = 0; //清除TF0标志
- TR0 = 1; //定时器0开始计时
- EA =1 ;
- ET0=1;
- }
- bit flag500ms = 0;
- unsigned char code str1[] = "Kingst Studio";
- unsigned char code str2[] = "Let's move...";
- extern void InitLcd1602();
- extern void LcdShowStr(unsigned char x, unsigned char y,unsigned char *str, unsigned char len);
- void main()
- {
-
- unsigned char i = 0;
- unsigned char index = 0;
- unsigned char pdata bufMove1[16 + sizeof(str1) + 16];
- unsigned char pdata bufMove2[16 + sizeof(str2) + 16];
- unsigned char adc_val;
- unsigned char str[10];
- P2=0xa0;P0=0;P2=0;
- Timer0Init();
- InitLcd1602();
- write_adc(0x00);
- for(i=0; i<16; i++)
- {
- bufMove1[i] = ' ';
- bufMove2[i] = ' ';
- }
- for(i=0; i<(sizeof(str1)-1); i++)
- {
- bufMove1[16 + i] = str1[i];
- bufMove2[16 + i] = str2[i];
- }
- for(i=(16 + sizeof(str1)-1); i<sizeof(bufMove1); i++)
- {
- bufMove1[i] = ' ';
- bufMove2[i] = ' ';
- }
- while (1)
- {
- if (flag500ms) //??500msò??ˉò?′??á??
- {
- flag500ms = 0;
- adc_val=read_adc(0x00);
- str[0] = adc_val/100+'0';
- str[1] = adc_val/10%10+'0';
- str[2] = adc_val%10+'0';
- // LcdShowStr(0,0,str,3);
-
-
- LcdShowStr(0, 0, bufMove1 + index, 16);
- LcdShowStr(0, 1, bufMove2 + index, 16);
- index++;
- if(index >= (16 + sizeof(str1)-1))
- {
- index = 0;
- }
- }
- }
- }
- void InterruptTimer0() interrupt 1
- {
- static unsigned int tmr500ms = 0;
-
- tmr500ms++;
- if (tmr500ms >= 500)
- {
- tmr500ms = 0;
- flag500ms = 1;
- }
- }
- #include <reg52.h>
- #define LCD1602_DB P0
- sbit LCD1602_RS = P2^0;
- sbit LCD1602_RW = P2^1;
- sbit LCD1602_E = P1^2;
- /* 等待液晶准备好 */
- void LcdWaitReady()
- {
- unsigned char sta;
-
- LCD1602_DB = 0xFF;
- LCD1602_RS = 0;
- LCD1602_RW = 1;
- do {
- LCD1602_E = 1;
- sta = LCD1602_DB; //读取状态字
- LCD1602_E = 0;
- } while (sta & 0x80); //bit7等于1表示液晶正忙,重复检测直到其等于0为止
- }
- /* 向LCD1602液晶写入一字节命令,cmd-待写入命令值 */
- void LcdWriteCmd(unsigned char cmd)
- {
- LcdWaitReady();
- LCD1602_RS = 0;
- LCD1602_RW = 0;
- LCD1602_DB = cmd;
- LCD1602_E = 1;
- LCD1602_E = 0;
- }
- /* 向LCD1602液晶写入一字节数据,dat-待写入数据值 */
- void LcdWriteDat(unsigned char dat)
- {
- LcdWaitReady();
- LCD1602_RS = 1;
- LCD1602_RW = 0;
- LCD1602_DB = dat;
- LCD1602_E = 1;
- LCD1602_E = 0;
- }
- /* 设置显示RAM起始地址,亦即光标位置,(x,y)-对应屏幕上的字符坐标 */
- void LcdSetCursor(unsigned char x, unsigned char y)
- {
- unsigned char addr;
-
- if (y == 0) //由输入的屏幕坐标计算显示RAM的地址
- addr = 0x00 + x; //第一行字符地址从0x00起始
- else
- addr = 0x40 + x; //第二行字符地址从0x40起始
- LcdWriteCmd(addr | 0x80); //设置RAM地址
- }
- /* 在液晶上显示字符串,(x,y)-对应屏幕上的起始坐标,
- str-字符串指针,len-需显示的字符长度 */
- void LcdShowStr(unsigned char x, unsigned char y,
- unsigned char *str, unsigned char len)
- {
- LcdSetCursor(x, y); //设置起始地址
- while (len--) //连续写入len个字符数据
- {
- LcdWriteDat(*str++); //先取str指向的数据,然后str自加1
- }
- }
- /* 初始化1602液晶 */
- void InitLcd1602()
- {
- LcdWriteCmd(0x38); //16*2显示,5*7点阵,8位数据接口
- LcdWriteCmd(0x0C); //显示器开,光标关闭
- LcdWriteCmd(0x06); //文字不动,地址自动+1
- LcdWriteCmd(0x01); //清屏
- }
- #ifndef _IIC_H
- #define _IIC_H
- //函数声明
- void IIC_Start(void);
- void IIC_Stop(void);
- void IIC_Ack(bit ackbit);
- void IIC_SendByte(unsigned char byt);
- bit IIC_WaitAck(void);
- unsigned char IIC_RecByte(void);
- void write_adc(unsigned char add);
- unsigned char read_adc(unsigned char add);
- #endif
- /*
- 程序说明: IIC总线驱动程序
- 软件环境: Keil uVision 4.10
- 硬件环境: CT107单片机综合实训平台 8051,12MHz
- 日 期: 2011-8-9
- */
- #include "reg52.h"
- #include "intrins.h"
- #define DELAY_TIME 12
- #define SlaveAddrW 0xA0
- #define SlaveAddrR 0xA1
- //总线引脚定义
- sbit SDA = P2^1; /* 数据线 */
- sbit SCL = P2^0; /* 时钟线 */
- void IIC_Delay(unsigned char i)
- {
- do{_nop_();}
- while(i--);
- }
- //总线启动条件
- void IIC_Start(void)
- {
- SDA = 1;
- SCL = 1;
- IIC_Delay(DELAY_TIME);
- SDA = 0;
- IIC_Delay(DELAY_TIME);
- SCL = 0;
- }
- //总线停止条件
- void IIC_Stop(void)
- {
- SDA = 0;
- SCL = 1;
- IIC_Delay(DELAY_TIME);
- SDA = 1;
- IIC_Delay(DELAY_TIME);
- }
- //发送应答
- void IIC_SendAck(bit ackbit)
- {
- SCL = 0;
- SDA = ackbit; // 0:应答,1:非应答
- IIC_Delay(DELAY_TIME);
- SCL = 1;
- IIC_Delay(DELAY_TIME);
- SCL = 0;
- SDA = 1;
- IIC_Delay(DELAY_TIME);
- }
- //等待应答
- bit IIC_WaitAck(void)
- {
- bit ackbit;
-
- SCL = 1;
- IIC_Delay(DELAY_TIME);
- ackbit = SDA;
- SCL = 0;
- IIC_Delay(DELAY_TIME);
- return ackbit;
- }
- //通过I2C总线发送数据
- void IIC_SendByte(unsigned char byt)
- {
- unsigned char i;
- for(i=0; i<8; i++)
- {
- SCL = 0;
- IIC_Delay(DELAY_TIME);
- if(byt & 0x80) SDA = 1;
- else SDA = 0;
- IIC_Delay(DELAY_TIME);
- SCL = 1;
- byt <<= 1;
- IIC_Delay(DELAY_TIME);
- }
- SCL = 0;
- }
- //从I2C总线上接收数据
- unsigned char IIC_RecByte(void)
- {
- unsigned char i, da;
- for(i=0; i<8; i++)
- {
- SCL = 1;
- IIC_Delay(DELAY_TIME);
- da <<= 1;
- if(SDA) da |= 1;
- SCL = 0;
- IIC_Delay(DELAY_TIME);
- }
- return da;
- }
- void write_adc(unsigned char add)
- {
- IIC_Start();
- IIC_SendByte(0x90);
- IIC_WaitAck();
- IIC_SendByte(add);
- IIC_WaitAck();
- IIC_Stop();
- }
- unsigned char read_adc(unsigned char add)
- {
- unsigned char temp;
- IIC_Start();
- IIC_SendByte(0x90);
- IIC_WaitAck();
- IIC_SendByte(add);
- IIC_WaitAck();
- IIC_Start();
- IIC_SendByte(0x91);
- IIC_WaitAck();
- temp=IIC_RecByte();
- IIC_WaitAck();
- IIC_Stop();
- return temp;
- }
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