嵌入式系统实验_作业模板(1).doc

嵌入式系统及应用开放性实验报告得 分：题 目： 基于LPC2378的温度采集专业名称： 电气工程及其自动化学生姓名： 吴盼盼班级： 09021303时间： 2016.6.181、 总体设计方案 利用热敏电阻获得温度模拟量，再借助ad转换转换成十进制数字量，再在LCD屏上显示出温度的数值，并且画出了温度随时间变化的坐标系和曲线。热敏电阻器是敏感元件的一类，按照温度系数不同分为正温度系数热敏电阻器（PTC）和负温度系数热敏电阻器（NTC）。热敏电阻器的典型特点是对温度敏感，不同的温度下表现出不同的电阻值。正温度系数热敏电阻器（PTC）在温度越高时电阻值越大，负温度系数热敏电阻器（NTC）在温度越高时电阻值越低，它们同属于半导体器件。2、 具体设计开始2.1程序框图 设置IO口置位和清零函数设置LCD的输入、储存、清屏函数设置LCD的显示初始坐标和颜色将AD转换器中获取的转换自热敏电阻温度信号的2进制信号利用查表法转换成10进制设置LCD屏上的画点函数借助C语言把温度的10进制信号和温度关于时间变化的曲线显示出来，曲线在25度到35度之间变化，画到头就清除之前的线，从头再画结束2.2实验程序代码AD转换成10进制代码：#include Code1.hconst unsigned int Temp_code=2843,2718,2599,2486,2379,2277,2180,2087,1999,1916,1836,1760,1688,1619,1553,1490,1430,1373,1319,1266,1217,1169,1124,1081,1039,1000,962,925,891,857,826,795,766,738,711,686,661,638,615,593,573,553,534,515,497,480,464,449,433,419,405,392,379,366,355,343,332,321,311,301,292,283,274,265,257,249,242,234,227,220,214,208,201,195,190,184,;uchar check_code(uint k)unsigned char i;if(k184)return(76);for(i=0;kTemp_codei;i+);return (i-1);extern uint Totemp(uint AD)unsigned int Itemp;unsigned int Tk;Tk=1023-AD;Itemp=(uint)(ulong)1000*AD)/Tk);return(Itemp);uchar Get_Temp(uint i)return (check_code(Totemp(i);程序代码： uint color=0xf8,0x00,0x07,0xe0,0x00,0x1f,0xff,0xe0,0x00,0x00,0xff,0xff,0x07,0xff,0xf8,0x1f; uint POINT_COLOR=0XF800; void Io_Set(uchar pin)unsigned int io_data=1;io_data=io_datapin;IOSET0=io_data; void Io_Clr(uchar pin) unsigned int io_data=1;io_data=io_datapin;IOCLR0=io_data;void Io_Set2(uchar pin)unsigned int io_data=1;io_data=io_datapin;FIO2SET=io_data; void Io_Clr2(uchar pin)unsigned int io_data=1;io_data=io_data0)i-;while(k1)k-;void LCD_WR_DATA_BYTE(uchar DataH,uchar DataL) Io_Set(RS); Io_Set(ALE); OUT_DATA(DataL);Io_Clr(ALE); delay(3); OUT_DATA(DataH);Io_Clr(WR);Io_Set(WR);void LCD_WR_DATA(uint val) Io_Set(RS);Io_Set(ALE); delay(3); OUT_DATA(val);Io_Clr(ALE); delay(3); OUT_DATA(val8);Io_Clr(WR);Io_Set(WR);void LCD_WR_COM( uint com) Io_Clr(RS);Io_Set(ALE); delay(3); OUT_DATA(com);Io_Clr(ALE); delay(3); OUT_DATA(com8);Io_Clr(WR);Io_Set(WR);void LCD_WR_COM_DATA( int com1,int dat1) LCD_WR_COM(com1); LCD_WR_DATA(dat1);voidLCD_SET_LOCATION(uint i,uint j) LCD_WR_COM_DATA(0x0020,0);LCD_WR_COM_DATA(0x0021,0);LCD_WR_COM(0x0022);void LCD_CLEAR(uchar x,uint y,uchar len,uint wid) ulong n,temp; LCD_WR_COM_DATA(0x0020,0); LCD_WR_COM_DATA(0x0021,0); LCD_WR_COM(0x0022);temp=(ulong)len*wid; for(n=0;n MAX_CHAR_POSX|yMAX_CHAR_POSY)return; LCD_WR_COM_DATA(0x0020,x); LCD_WR_COM_DATA(0x0021,y);LCD_WR_COM_DATA(0x0050, x); / Horizontal GRAM Start AddressLCD_WR_COM_DATA(0x0052, y); / Vertical GRAM Start Address LCD_WR_COM_DATA(0x0051, x+5); / Horizontal GRAM End Address LCD_WR_COM_DATA(0x0053, y+11); / Vertical GRAM end Address LCD_WR_COM(0x0022)num=num- ;for(pos=0;pos12;pos+) temp=asc2num12 - pos; for(t=0;t=1; LCD_WR_COM_DATA(0x0050, 0x0000); / Horizontal GRAM Start AddressLCD_WR_COM_DATA(0x0051, 0x00EF); / Horizontal GRAM End AddressLCD_WR_COM_DATA(0x0052, 0x0000); / Vertical GRAM Start AddressLCD_WR_COM_DATA(0x0053, 0x013F); / Vertical GRAM Start Address void LCD_ShowString(uchar x,uint y,const uchar *p) while(*p!=0) if(xMAX_CHAR_POSX)x=0;y+=12; if(yMAX_CHAR_POSY)y=x=0;LCD_CLEAR(0,0,240,320); LCD_ShowChar(x,y,*p); x+=6; p+; void LCD_ShowBmp(uchar x,uint y,uchar lenth,uint wide,const uchar *p) ulong size,temp; temp=wide*2;LCD_SET_LOCATION(0,0);temp=(ulong)temp*lenth;for(size=0;size 6) & 0x03FF; t=Get_Temp(val); return t; 主程序代码：int main() int ZYJ ;int x ;char code30;int i;int j;init_port();PCONP |=(112); PINSEL0=0;PINSEL1=0x00004000;LCD_Init();LCD_CLEAR(0,0,240,320);while(1)DDD = (int)GetAD0();memset(code,0,sizeof(code); sprintf(code,The Temperature is %d,DDD); POINT_COLOR=0x07E0; LCD_ShowString(60, 300,code);LCD_ShowString(70, 250, 09021303 2013302268);for(i=0;i= 240)x=10;LCD_CLEAR(0,0,240,250);3、 实验目的（1）了解热敏电阻与温度的对应关系，熟悉温度采样硬件电路（2）熟悉AD的结构，掌握AD寄存器的使用方法；（3）掌握正确配置引脚的方法，实现指定功能；（4）熟悉串口的机制，掌握串口寄存器的