通過，可以使用
單片機源程序如下:
- #pragma CODE DEBUG SYMBOLS OBJECTEXTEND //SRC 當與匯編混合編譯時需要
- #include"VRS51L3074_keil.h"
- #include<intrins.h>
- #define uchar unsigned char
- #define uint unsigned int
- #define ulong unsigned long
- typedef union{ //無符號字符型,整形,長整形數據聯合體
- uchar uc[2];
- uint ui;
- }UCI;
- typedef union{ //無符號字符型,整形,長整形數據聯合體
- uchar uc[4];
- uint ui[2];
- ulong ul;
- }UCIL;
-
- #define DELAY5 delay() //_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_()
- sbit P1_5 = P1^5; //1
- sbit P1_6 = P1^6; //2
- sbit P1_7 = P1^7; //3
- sbit P4_5 = P4^5; //6 pin
- sbit P5_0 = P5^0; //7
- sbit P5_1 = P5^1; //8
- sbit P5_2 = P5^2; //9
- sbit P5_3 = P5^3; //10
- sbit P5_4 = P5^4; //20
- sbit P5_5 = P5^5; //21
- sbit P5_6 = P5^6; //22
- sbit P5_7 = P5^7; //23
- #define AD7799_CS P4_5 //輸出 6pin
- #define AD7799_SCLK P5_1 //輸出 8pin
- #define AD7799_DOUT P5_2 //輸入 9pin
- #define AD7799_RDY P5_2 //輸入 9pin 同上是一個引腳
- #define AD7799_DIN P5_0 //輸出 7pin
- UCIL MainData,demoul;
- ulong xdata XMainData,xdemoul;
- void Ad7799_Ini();
- #define DELAYS10 _nop_();_nop_();_nop_();_nop_()
- void delay(char i)
- {uchar j;
- for(;i>0;i--); for(j=0;j<10;j++)_nop_();
- }
- void CPUInit(void)
- {
- /*I/O口配置：輸入配置為1(配置為1后，內部自動上拉到2.5V，輸出配置為0；空腳要配置為0*/
- PERIPHEN1=0x18; //BIT7:SPICSEN 6:SPIEN 5:I2CEN 4:U1EN 3:U0EN 2:T2EN 1;T1EN 0:T0EN //TIMER2和TIMER0使能
- P0PINCFG=0x00;
- P1PINCFG=0x04;
- P2PINCFG=0x00; //00100100
- P3PINCFG=0x01;
- P4PINCFG=0x00;
- P5PINCFG=0x04; //00000100
- P6PINCFG=0x00;
- PORTINEN=0xff; //0xff全部I/O口均不使用
- P0=P1=P2=P3=P6=0x00; P4=0x00;P5=0x04;
- PERIPHEN2=0x28;//BIN7:PWC1EN 6:PWC0EN 5:AUEN 4:XRAM2CODE 3:IOPORTEN 2:WDTEN 1:PWMSFREN 0:FPIEN 算術單元、IO口使能*/
- P0=P1=P2=P3=P6=0x00; P4=0x00; P5=0x04;
- AD7799_CS=1;
- UART0CFG=0x90; // 0x09:38400 BRADJ=0x02（19200）/波特率發生器使用內部晶振/9th不使用/1位停止位
- UART0INT=0x00; //使能接收中斷，使能發送完成中斷，允許接收 Enable RX AV + RXOVint + Enable Reception
- UART0EXT=0x00; //Not using UART0 Extensions
- UART0BRL=0x1f; //0040=19200 001f=38400
- UART0BRH=0x00; //波特率19200
- U0IEN=1;
- GENINTEN = 0x01; //Enable Global interrupt
- UART0BUF=0xff;
- while(!(UART0INT & 0x01));
- UART0BUF=0xff;
- while(!(UART0INT & 0x01));
- UART0BUF=0xff;
- while(!(UART0INT & 0x01));
- UART0BUF=0xff;
- while(!(UART0INT & 0x01));
- UART0BUF=0x0d;
- while(!(UART0INT & 0x01));
- }
- /* AD7799寫寄存器函數
- WriteData：要寫的數據*/
- void WriteByteToAd7799(unsigned char WriteData)
- {
- unsigned char i ;
- AD7799_CS=0;
- for(i=0;i<8;i++)
- {
- DELAYS10;
- AD7799_SCLK=0 ;
- DELAYS10;
- if(WriteData&0x80)AD7799_DIN=1 ;
- else AD7799_DIN=0 ;
- WriteData=WriteData<<1 ;
- DELAYS10;
- AD7799_SCLK=1 ;
- DELAYS10;
- }
- AD7799_CS=1;
- }
- /*AD7799讀寄存器函數*/
- unsigned char ReadByteFromAd7799(void)
- {
- unsigned char i ;
- unsigned char ReadData ;
- AD7799_CS=0;
- ReadData=0 ;
- for(i=0;i<8;i++)
- {
- DELAYS10;
- AD7799_SCLK=0 ;
- DELAYS10;
- ReadData=ReadData<<1 ;
- if(AD7799_DOUT)ReadData+=1 ;
- DELAYS10;
- AD7799_SCLK=1 ;
- DELAYS10;
- }
- AD7799_DOUT=1 ;
- AD7799_CS=1;
- return(ReadData);
- }
- void WaiteRDY(void)
- {
- unsigned int iint ;
- iint=0 ;
- while(AD7799_RDY)
- {
- iint++;
- if(iint>65530)
- {
- //reset ad7799
- WriteByteToAd7799(0xff);
- WriteByteToAd7799(0xff);
- WriteByteToAd7799(0xff);
- WriteByteToAd7799(0xff);
- Ad7799_Ini();
- break ;
- }
- }
- }
- void Ad7799_Ini()
- {
- WriteByteToAd7799(0x10);
- //b0001 0000
- /* Writes to Communications Register Setting Next Operation as Write to CONFIGURATION Register*/
- //寫通訊寄存器為：下一操作寫配置寄存器 WriteByteToAd7799(0x10）b0001 0000 0寫通訊0下操作寫010配置寄存器0關連續讀00留用
- WriteByteToAd7799(0x37);//增益為128 B0011 0111 00留用1開電流源1單端 0留用111是128倍增益
- WriteByteToAd7799(0x00); //通道號 0 B0011 0000 00留用1基準默認1開緩沖 0留用000通道0
- //1通道
- /*CONFIGURATION REGISTER[00,BO(0),U/B(0),0(0),G2(1),G1(1),G0(1),0,0,REF_DET(0),BUF(1),0(0),CH2(0),CH1(0),CH0(0)]*/
- //WriteByteToAd7799(0x08);
- //b0000 1000
- /* Writes to Communications Register Setting Next Operation as Write to Mode Register*/
- //WriteByteToAd7799(0x80);
- //WriteByteToAd7799(0x0a);
- /* Writes to Mode Register Initiating Internal Zero-Scale Calibration*/
- //WaiteRDY();
- /* Wait for RDY pin to go low to indicate end of calibration cycle*/
- //WriteByteToAd7799(0x08);
- /* Writes to Communications Register Setting Next Operation as Write to
- Mode Register*/
- //WriteByteToAd7799(0xa0);
- //WriteByteToAd7799(0x0a);
- /* Writes to Mode Register Initiating Internal Full-Scale Calibration*/
- //WaiteRDY();
- /* Wait for RDY pin to go low to indicate end of calibration cycle*/
- WriteByteToAd7799(0x08);//b0000 1000
- /* Writes to Communications Register Setting Next Operation as Write to Mode Register*/
- WriteByteToAd7799(0x00); //000連續模式0斷PSW0000留用
- WriteByteToAd7799(0x09); //0000留用0011(123Hz)1010(16.7HZ65dB)
- /* Mode Register[MD2(0),MD1(0),MD0(0),PSW(0),0(0),0(0),0(0),0(0),(0),(0),0(0),0(0),FS3(1),FS2(0),FS1(1),FS0(0)]*/
- /*模式0 Continuous-Conversion Mode.，Fadc=16.7HZ;*/
- }
- ulong ReadAd7799ConversionData(void)
- {
- ulong ConverData ;
- unsigned char ADSAT ;
- unsigned char ErrNUM=0;
- WaiteRDY(); //等待數據READY
- WriteByteToAd7799(0x40); //0100 0000 配置下一操作為：讀狀態寄存器
- ADSAT=ReadByteFromAd7799(); //讀出狀態 8位
- while((ADSAT&0x40)||(!(ADSAT&0x08))) //出錯或者讀寫異常
- {
- WriteByteToAd7799(0xff); //復位
- WriteByteToAd7799(0xff);
- WriteByteToAd7799(0xff);
- WriteByteToAd7799(0xff);
- Ad7799_Ini(); //初始化
- WaiteRDY(); //讀狀態
- WriteByteToAd7799(0x40); //下一操作：讀狀態
- ADSAT=ReadByteFromAd7799(); //讀狀態
-
- ErrNUM++;
- if(ErrNUM>5)return(0xffffff);//if(ErrNUM>5)break; //連續5次都讀出錯
- }
-
- WriteByteToAd7799(0x58); //0101 1000 配置下一操作：讀數據寄存器，000
- /* Writes to Communications Register Setting Next Operation as Continuous Read From Data Register*/
- WaiteRDY();
- /* Wait for RDY pin to go low to indicate end of calibration cycle*/
- if(!AD7799_RDY)
- {
- ConverData=0 ;
- ConverData=ReadByteFromAd7799();
- ConverData=ConverData<<8 ;
- ConverData=ReadByteFromAd7799()+ConverData;
- ConverData=ConverData<<8 ;
- ConverData=ReadByteFromAd7799()+ConverData;
- }
- /* Read Conversion Result from AD7799's Data Register*/
- return(ConverData);
- }
- UCIL temp;
- void main(void)
- {
- uint code *adtpoint; //
- uchar i=0,j=0;
- delay(100);
- CPUInit();
- //AD7799_CS=0;
- delay(10);
- WriteByteToAd7799(0xff); //寫入32個高電平，復位ADC
- WriteByteToAd7799(0xff);
- WriteByteToAd7799(0xff);
- WriteByteToAd7799(0xff);
- Ad7799_Ini();
- while(1)
- {
- temp.ul=ReadAd7799ConversionData();
- UART0BUF=temp.uc[0];
- while(!(UART0INT & 0x01));
- UART0BUF=temp.uc[1];
- while(!(UART0INT & 0x01));
- UART0BUF=temp.uc[2];
- while(!(UART0INT & 0x01));
- UART0BUF=temp.uc[3];
- while(!(UART0INT & 0x01));
- }
- }
所有程序51hei提供下載:
Keil_C_AD7799.rar
(38.08 KB, 下載次數: 5)
2021-4-21 20:46 上傳
點擊文件名下載附件
通過 下載積分: 黑幣 -5
|
QQ好友和群
QQ空間
騰訊微博
騰訊朋友
收藏
淘帖
頂
踩
