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#include
#define uchar unsigned char #define uint unsigned int #define ENABLE_INT EA = 1 #define DISABLE_INT EA = 0 //AD5722 ***it DA_SYNCN = P2^6; ***it DA_SCLK = P2^5; ***it DA_SDIN = P2^4; ***it DA_LDACN = P2^3; ***it DA_CLRN = P2^2; ***it DA_SDO = P2^7; //AD7712 ***it AD_SCLK = P0^7; ***it AD_A0 = P0^6; ***it AD_SDATA = P0^5; ***it AD_DRDY = P0^4; ***it AD_RFS = P0^3; ***it AD_TFS = P0^2; //ADG1611 void delay_nus(unsigned int n) { unsigned int i; for(i = n; i > 0; i--) { ; } } void DA_write_data(uchar addr,uint dat) { int i; uint temp; DA_SYNCN = 1; DA_LDACN = 1; DA_SCLK = 1; DA_SYNCN = 0; //delay_nus(1); for(i = 7;i >= 0;i--) { temp = ((addr >> i) & 0x01); DA_SDIN = temp; //delay_nus(1); DA_SCLK = 0; //delay_nus(1); DA_SCLK = 1; //delay_nus(1); } for(i = 15;i >= 0;i--) { temp = ((dat >> i) & 0x01); DA_SDIN = temp; //delay_nus(1); DA_SCLK = 0; //delay_nus(1); DA_SCLK = 1; //delay_nus(1); } DA_SYNCN = 1; //delay_nus(1); DA_LDACN = 0; //delay_nus(1); DA_LDACN = 1; } void DA_init() { DA_CLRN = 0; delay_nus(5); DA_CLRN = 1; delay_nus(1); DA_LDACN = 1; DA_SYNCN = 1; DA_SCLK = 1; //1 output range 2 power 3 control DA_write_data(0x0c,0x0003);// +5V output range delay_nus(100); //internal ref set 0x10 0x0011 A //0x10 0x0014 B //0x10 0x0015 A and B //DA_write_data(0x10,0x0015);//internal ref DA_write_data(0x10,0x0005); //control reg delay_nus(100); DA_write_data(0x19,0x0009);//Control Reg delay_nus(100); } void Uart_init(void) //????? { SCON = 0x50; //??1, 8????,???? TMOD |= 0x20; //??TIMER1: timer 1,??2 PCON |= 0x00; //SMOD=1 TH1 = 0xfd; // TH1: reload value for 38400 baud @ 22.1184MH TR1 = 1; // TIMER1???? ES = 1; //??????? PS = 1; //?????????????? ENABLE_INT; } void com_isr() interrupt 4 //????????? { //uchar temp; //bit bTI_Backup; DISABLE_INT; //?????? if(RI) //???????????? { RI = 0; // RI?? //bTI_Backup = TI; //TI = 0; //temp = SBUF; //while(!TI); //TI = bTI_Backup; } if(TI) //?????????????,???TI???????? { TI = 0; //TI??,????? } ENABLE_INT; //???? } void Uart_send(uchar dat) { DISABLE_INT; SBUF = dat; while(!TI); TI = 0; ENABLE_INT; //??????? } void ulong_data_send(unsigned long dat) { uchar buf; uchar com_d1,com_d2,com_d3,com_d4; buf = (dat >> 21) & 0x7f; com_d1 = 128 + buf; buf = (dat >> 14)&0x7f; com_d2 = buf; buf = (dat >> 7)&0x7f; com_d3 = buf; com_d4 = dat &0x7f; Uart_send(com_d1); Uart_send(com_d2); Uart_send(com_d3); Uart_send(com_d4); } void AD7712_init() { AD_TFS = 1; AD_SCLK = 0; AD_RFS = 1; } unsigned long AD7712_read_dat2() { char index = 0; unsigned long res = 0; uchar bit_dat = 0; DISABLE_INT; AD_RFS = 1; AD_SDATA = 1; AD_A0 = 0; AD_SCLK = 0; AD_DRDY = 1; while(AD_DRDY); AD_A0 = 1; AD_RFS = 0; while(AD_DRDY == 0) { index++; delay_nus(4); AD_SCLK = 1; delay_nus(4); bit_dat = AD_SDATA; AD_SCLK = 0; AD_SDATA = 1; res <<=1; res +=bit_dat; AD_DRDY = 1; } AD_RFS = 1; AD_A0 = 0; ENABLE_INT; return res; } unsigned long AD7712_read_dat(uchar total_bits) { unsigned long res = 0; char index = 0; uchar bit_dat = 0; DISABLE_INT; AD_RFS = 1; AD_SDATA = 1; AD_A0 = 0; AD_SCLK = 0; AD_DRDY = 1; while(AD_DRDY); AD_A0 = 1; AD_RFS = 0; for(index = 0;index < total_bits; index++) { delay_nus(10); AD_SCLK = 1; delay_nus(10); bit_dat = AD_SDATA; AD_SCLK = 0; AD_SDATA = 1; res <<= 1; res +=bit_dat; } AD_RFS = 1; AD_A0 = 0; ENABLE_INT; return res; } void AD7712_wr_ctr_reg(uchar mode,uchar gain,uchar CH,uchar PD,uchar WL,uchar BO,uchar BU,uint fs) { int i = 0; uchar control_reg0,control_reg1,control_reg2; DISABLE_INT; control_reg0 = (mode << 5) + (gain <<2) + (CH <<1) + PD; control_reg1 = (WL << 7) + (BO << 5) + (BU << 4) + ((fs >> 8)&0x0f); control_reg2 = fs &0x00ff; AD_RFS = 1; AD_TFS = 1; AD_SDATA = 0; AD_A0 = 1; AD_SCLK = 0; AD_DRDY = 1; while(AD_DRDY); AD_A0 = 0; AD_TFS = 0; for(i = 23;i>=0; i--) { if(i >= 16) { AD_SDATA = (control_reg0 >>(i-16))&0x01; } else { if(i >= 8) { AD_SDATA = (control_reg1 >>(i-8))&0x01; } else { AD_SDATA = (control_reg2 >> i) & 0x01; } } delay_nus(5); AD_SCLK = 1; delay_nus(5); AD_SCLK = 0; delay_nus(5); } delay_nus(5); AD_TFS = 1; AD_A0 = 1; AD_DRDY = 1; while(AD_DRDY); ENABLE_INT; } /* 44 5769446 45 5839606 46 5908313 47 5975563 48 6041351 49 6105678 50 6168547 51 6229936 52 6289862 53 6348336 54 6405370 55 6460979 */ void main() { int idx = 0; long TEMP_ERR_VAULE = 34000; unsigned long adc_dat = 0; unsigned long uart_adc_dat = 0; unsigned long dac_dat; double e,e1,e2,e_sum; double su,delta_u,tmp_u; double k1,k2,k3; double kp,ki,kd; delay_nus(10000); DISABLE_INT; Uart_init(); DA_init(); AD7712_init(); ENABLE_INT; DA_write_data(0x02,0x00); //AD7712_wr_ctr_reg(uchar mode,uchar gain,uchar ch,uchar PD,uchar WL,uchar BO,uchar BU,uint fs) AD7712_wr_ctr_reg( 0x01, 0x00, 0x00, 0x00, 1, 0x00, 0x00, 380); //AD7712_wr_ctr_reg( 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x17c); //P1 = 0xfd; //100 //P1 = 0xFB; //500 //kp = 1.5;ki = 0.0045; //kp = 1.5;ki = 0.009; //kp = 0.5;ki =0.006; //kp = 0.5;ki = 0.003; //kp = 0.1; //ki = 0.00001; kp = 1.0; ki = 0.0002; kd = 0.0; k1 = kp + ki + kd; k2 = -kp - 2*kd; k3 = kd; e = 0.0; e_sum = 0.0; e1= 0.0; e2= 0.0; su = 0.0; delta_u = 0.0; tmp_u = 0.0; while(1) { adc_dat =AD7712_read_dat2(); adc_dat =8388608 - adc_dat; adc_dat = adc_dat>>7; uart_adc_dat = adc_dat; //adc_dat >>=8; e2 = e1; e1 = e; e = TEMP_ERR_VAULE-1.0*adc_dat ; delta_u = k1*e + k2 * e1 + k3 * e2; su = su + delta_u; if(su > 500.0) su = 500.0; if(su < -500.0) su = -500.0; //if(u < 5.0) u =5.0; tmp_u = (su+2048.0)*16; dac_dat = (unsigned long)tmp_u; //dac_dat = 0; DA_write_data(0x02,dac_dat); if(idx == 10) { idx = 0; //uint_data_send(res); //uart_adc_dat = dac_dat; ulong_data_send(uart_adc_dat); } idx++; } } |
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