ad7793编程例子.docx

1、ad7793编程例子ad7793编程例子ad7793编程 #include #include #include #include #define uchar unsigned char #define TIMES 200 /pcf8563 #define byte unsigned char #define SomeNOP(); _nop_();_nop_();_nop_();_nop_(); #define MONTH 15 #define READ_ADR 0xa3 #define WRITE_ADR 0xa2 /usb #define INIT_TIME_FN 0x30 /asc-0 #

2、define MAXDATA 20 /ad sbit CS=P13; sbit CLK=P12; sbit SCLK=P10; sbit DIN=P14; sbit DOUT_RDY=P11; /pcf8563 sbit CLKOUT=P20; sbit SCL=P21; sbit SDA=P22; sbit int11=P23; void send(uchar); uchar receive(void); void init_com(void); /initad1 void writetoreg(uchar); uchar readfromreg(void); bit readstatusr

3、eg(void); uchar * readsingle(void); /void set_s_conv(void); void set_c_conv(void); void set_c_read(void); void single_conv(void); void continuous_conv(int t); void continous_read(); void set_timer(); /pcf8563 uchar receiveonetime(void); void starti2c(); void stopi2c(); bit waitack(); void sendack();

4、 void sendnack(); void sendbyte(byte ch); byte receivebyte(); void writedata(uchar timetype,uchar value); void readdata(uchar firsttype,uchar count,uchar *buff); void setalarm(uchar alarmtype,uchar count); void cleanalarm(); void inittime(uchar *c); void init_int0(); void readouttime(); /usb volatil

5、e uchar aMAXDATA,begin_int_times,int_times,sample_flag;/0x627525 presentes voltage of AVDD=2.7V/uchar pre_data; void CreateFile(uchar * fn); void WritetoFile(uchar * wdata, uchar length); void OpenFile(uchar * fn); void SetPointer(uchar pointer); bit ReadFile(uchar length); void ReturntoRoot(void);

6、/uchar* ToASC(uchar c); /pcf8563 timer int void alarm() interrupt 0 using 2 int alarm; EA=0;/禁止中断 /if(int_time=0) if(int_timesbegin_int_times) int_times+; a7|=0x80; setalarm(0x09,a7);IE0=0;EA=1;/set begin_minute alarm else /end time /a8-; /begin sampling if(int_times=begin_int_times) int_times+; sam

7、ple_flag=1;/give a begin_sampling flag if(aMONTH=4) aMONTH=a9;alarm=10; else aMONTH=0; alarm=9;/end_month is given to aMONTH switch(a8) case 4: if(aMONTH!=0&a9=a2) a8-; aalarm=aalarm+1;aalarm+1=aalarm+2; aalarm|=0x80; setalarm(0x0b,aalarm); IE0=0;EA=1;break;/设定日报警 case 3: aalarm|=0x80; setalarm(0x0a

8、,aalarm); a8-; aalarm=aalarm+1; IE0=0;EA=1;break;/set hour alarm case 2: aalarm|=0x80; setalarm(0x09,aalarm); a8-; IE0=0;EA=1;break;/set minute alarm case 1: sample_flag=2; break; /end_minute time comes,end sampling default:break; /IE0=0;/ 中断申请标志清零 /EA=1;/开中断 / send(0x11); / /比较当前时刻和停止采样时刻是否一致，决定是否停

9、止采样， main() /1 define variable; watchdog setting /pcf8563 int i,k,j; uchar setvalue; /,c12 /ad uchar sta_reg; /usb uchar fn2; /fn = file name sample_flag=0; int_times=0; /watchdog WDTPRG|=0x07;/*2.275s FOSCA=11.059200 MHz */ /* watchdog start sequence */ WDTRST=0x1E; WDTRST=0xE1; /2 init com, set co

10、mmunication parameter, set system time, set system parameter / (inluding begin-time and end-time, sampling-rate, receive-date-manner) /pcf563 /int11=1; /ad /* PRECONFIGURE.*/ /k=32; SCLK=1; CS=0; DIN=1; /to keep DIN=1 for 32 sclock to reset the part for(i=0;i32;i+) SCLK=0; SCLK=1; CS=1; /usb init_co

11、m(); fn0=INIT_TIME_FN; fn1=INIT_TIME_FN; OpenFile(fn); SetPointer(0); ReadFile(15); /for(i=0;isend /4 ad7793 parameter init /initial register writetoreg(0x10); writetoreg(0x00); writetoreg(0x97);/write to conf reg: 0x1090: gain:16; unipolar; no Vbias; /internal ref; buffer; channel 1 /10-13 writetor

12、eg(0x50); for(k=0;k2;k+)sta_reg=readfromreg();send(sta_reg); /read writetoreg(0x28); writetoreg(0x03); /I/O reg: excitation currents:1ma writetoreg(0x68); sta_reg=readfromreg(); send(sta_reg);/ read writetoreg(0x08); writetoreg(0x80); writetoreg(0x0a);/write to mode reg: 0x8005:50HZ; Internal 64K cl

13、ock, /not out; internal zero calibration while(DOUT_RDY); writetoreg(0x08); writetoreg(0xa0); writetoreg(0x0a);/write to mode reg: 0x8005:50HZ; Internal 64K clock, /not out; internal full-scale calibration while(DOUT_RDY); /set timer for watchdog /5 sampling rolling while(1) /sampling if(sample_flag

14、=1)/begin_sample else if(sample_flag=2)/sleeping /*for(j=0;j20;j+) / single conversion writetoreg(0x08); writetoreg(0x20); writetoreg(0x0a);/write to mode reg: 0x8005:50HZ; Internal 64K clock, /not out; zero calibration while(DOUT_RDY); for(i=0;i10;i+) writetoreg(0x58); for(k=0;k3;k+)sta_reg=readfro

15、mreg();send(sta_reg); */ /* writetoreg(0x08); writetoreg(0xa0); writetoreg(0x05);/write to mode reg: 50HZ; Internal 64K clock, /not out; full-scall calibration while(readstatusreg(); writetoreg(0x08); writetoreg(0x00); writetoreg(0x05); */ /read data / for(i=0;i100;i+) single_conv(); / continuous_co

16、nv(100); / continous_read(); /send sampling data to u-pan file /test sequence if(receive()=0x80) readouttime();/pcf8563 /* watchdog reset sequence */ WDTRST=0x1E; WDTRST=0xE1; for(;); /+/ /-pcf8563 -/ /+/ uchar receiveonetime(void) uchar RX; RX=0; if(RI=1) RI=0; RX=SBUF; else RX=0; return RX; void s

17、tarti2c() EA=0; SDA=1; SCL=1; SomeNOP();/INI SDA=0; SomeNOP(); /START SCL=0; void stopi2c() SCL=0; SDA=0; SomeNOP(); /INI SCL=1; SomeNOP(); SDA=1; /STOP EA=1; bit waitack() uchar errtime=255;/因故障接收方无ACK，超时值为255。 SDA=1;SomeNOP(); SCL=1;SomeNOP(); while(SDA) errtime-; if (!errtime) stopi2c();/SystemEr

18、ror=0x11; return 0; SCL=0; return 1; void sendack() SDA=0; SomeNOP(); SCL=1; SomeNOP(); SCL=0; void sendnack() SDA=1; SomeNOP(); SCL=1; SomeNOP(); SCL=0; void sendbyte(byte ch) uchar i=8; while (i-) SCL=0;_nop_(); SDA=(bit)(ch&0x80); ch=1; SomeNOP(); SCL=1; SomeNOP(); /上升沿有效 SCL=0; byte receivebyte(

19、void) uchar i=8; byte ddata=0; SDA=1; while(i-)ddata=1; SCL=0;SomeNOP(); SCL=1;SomeNOP(); ddata|=SDA; SCL=0; return ddata; void readdata(uchar firsttype,uchar count,uchar *buff) uchar i; starti2c(); sendbyte(WRITE_ADR); /0xA2 waitack(); sendbyte(firsttype); waitack(); starti2c(); sendbyte(READ_ADR);

20、 /0xA3 waitack(); for (i=0;icount;i+) buffi=receivebyte(); if (i!=count-1) sendack();/除最后一个字节外，其他都要从MASTER发应答。 sendnack(); stopi2c(); /*- 调用方式:void SetPCF8563(uchar timetype,uchar value) ,2001/08/0 7 函数说明:调整时钟。timetype是要改的时间类型，value是新设置的时间值(BCD格式)。 0x02:秒/0x03:分/0x04:小时/0x05:日/0x06:星期/0x07:月(世纪)/0x0

21、8:年 -*/ void writedata(uchar timetype,uchar value) starti2c(); sendbyte(0xa2); waitack(); sendbyte(timetype); waitack(); sendbyte(value); waitack(); stopi2c(); /*- 调用方式:void SetAlarmHour(uchar count) ,2001/08/0 7 函数说明:设置报警闹钟在一天的第count点报警。例如:count,23，则在晚上11点报警。 -*/ void setalarm(uchar alarmtype,uchar

22、 count) writedata(0x01,0x02); writedata(alarmtype,count); /*- 调用方式:void CleanAlarm(void) ,2001/08/0 7 函数说明:清除所有报警设置。 -*/ void cleanalarm(void) writedata(0x01,0x00); writedata(0x09,0x80); writedata(0x0A,0x80); writedata(0x0B,0x80); writedata(0x0C,0x80); /writedata(0x0D,0x00); /writedata(0x0E,0x03); v

23、oid inittime(uchar *c) uchar setvalue; writedata(0x08,c1); /write year if(c0&0x20=0) setvalue=c2& 0x1f; else setvalue=c2& 0x9f; writedata(0x07,setvalue); /write mouth and centrary writedata(0x06,c6&0x07); writedata(0x05,c3&0x3f); writedata(0x04,c4&0x3f); writedata(0x03,c5&0x7f); void init_int0() EA=

24、1; /开中断 IT0=0;/设置中断1为电平触发方式 EX0=1;/允许外部中断0 /void INTERRUPT(_IE0_)int0_isr() void readouttime() uchar c7,setvalue; int i; readdata(0x03,6,c); c0&=0x7f; c1&=0x3f; c2&=0x3f; c3&=0x07; setvalue = c4; setvalue&=0x80; c4&= 0x1f; / c7=c5; c6=c5; if(setvalue) c5=0x19; else c5=0x20; for(i=0;i7;i+) send(ci);

25、/+/ /+/ /-usb -/ /+/ /+/ void init_com(void) /*串口初始化*/ TMOD=0x22; /TH1=0xf4; TL1=0xf4; PCON=0x00;/SMOD=0 2400bps TH1=0xff; TL1=0xff; PCON=0x80; /SMOD=1 57600bps TR1=1; SCON=0xd8;/0x50 ET1=0; ES=0; void send(uchar ad_data) SBUF=ad_data; while(TI=0); TI=0; uchar receive(void) uchar RX; RX=0; while(RI=0); RI=0; RX=SBUF; return RX; void CreateFile(uchar * fn) uchar i; /uchar c5; send(0x0