387 lines
11 KiB
C
387 lines
11 KiB
C
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#include "ADS1256.h"
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#include "spi.h"
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unsigned int sum;
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long ulResult;
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long double ldVolutage;
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int ads_cnt = 0;
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//-----------------------------------------------------------------//
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// 功 能：ADS1256 写数据
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// 入口参数: /
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// 出口参数: /
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// 全局变量: /
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// 备 注: 向ADS1256中地址为regaddr的寄存器写入一个字节databyte
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//-----------------------------------------------------------------//
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void ADS1256WREG(unsigned char regaddr,unsigned char databyte)
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{
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unsigned char cmd;
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//CS_0;
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while(ADS1256_DRDY)
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{
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ads_cnt++;
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if(ads_cnt >= OVER_TIMES)
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{
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ads_cnt = 0;
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return;
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}
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}//当AD2_DRDY为低时才能写寄存器
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//向寄存器写入数据地址
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cmd = ADS1256_CMD_WREG|(regaddr & 0x0F);
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HAL_SPI_Transmit(&hspi3, &cmd, 1, 1);
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//写入数据的个数n-1
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cmd = 0x00;
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HAL_SPI_Transmit(&hspi3, &cmd, 1, 1);
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//向regaddr地址指向的寄存器写入数据databyte
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HAL_SPI_Transmit(&hspi3, &databyte, 1, 1);
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//CS_1;
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}
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//初始化ADS1256
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void ADS1256_Init(void)
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{
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//CS_0;
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LL_GPIO_SetOutputPin(ADS1256_PDWN_GPIO_Port,ADS1256_PDWN_Pin);
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ADS1256WREG(ADS1256_STATUS,0x06);// 高位在前、校准、使用缓冲
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ADS1256WREG(ADS1256_MUX,ADS1256_MUXP_AIN0 | ADS1256_MUXN_AINCOM);// 初始化端口A0为‘+’，AINCOM位‘-’
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ADS1256WREG(ADS1256_ADCON,0x00);// 放大倍数1
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ADS1256WREG(ADS1256_DRATE,ADS1256_DRATE_30000SPS);// 数据30000sps
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ADS1256WREG(ADS1256_IO,0x00);
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}
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//读取AD值
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long double ADS1256ReadData(uint8_t channel)
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{
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unsigned char cmd;
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unsigned char data[3];
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while(ADS1256_DRDY)
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{
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ads_cnt++;
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if(ads_cnt >= OVER_TIMES)
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{
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ads_cnt = 0;
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return ldVolutage;
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}
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}//当AD2_DRDY为低时才能写寄存器;
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//切换通道
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//注意：本次写入的新通道在下次读取时才会生效，本次读到的是上一次的值
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switch(channel)
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{
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case 0:
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ADS1256WREG(ADS1256_MUX, ADS1256_MUXP_AIN0 | ADS1256_MUXN_AINCOM);
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break;
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case 1:
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ADS1256WREG(ADS1256_MUX, ADS1256_MUXP_AIN1 | ADS1256_MUXN_AINCOM);
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break;
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case 2:
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ADS1256WREG(ADS1256_MUX, ADS1256_MUXP_AIN2 | ADS1256_MUXN_AINCOM);
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break;
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case 3:
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ADS1256WREG(ADS1256_MUX, ADS1256_MUXP_AIN3 | ADS1256_MUXN_AINCOM);
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break;
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case 4:
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ADS1256WREG(ADS1256_MUX, ADS1256_MUXP_AIN4 | ADS1256_MUXN_AINCOM);
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break;
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case 5:
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ADS1256WREG(ADS1256_MUX, ADS1256_MUXP_AIN5 | ADS1256_MUXN_AINCOM);
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break;
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case 6:
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ADS1256WREG(ADS1256_MUX, ADS1256_MUXP_AIN6 | ADS1256_MUXN_AINCOM);
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break;
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case 7:
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ADS1256WREG(ADS1256_MUX, ADS1256_MUXP_AIN7 | ADS1256_MUXN_AINCOM);
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break;
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}
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//CS_0;
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cmd = ADS1256_CMD_SYNC;
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HAL_SPI_Transmit(&hspi3, &cmd, 1, 1);
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cmd = ADS1256_CMD_WAKEUP;
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HAL_SPI_Transmit(&hspi3, &cmd, 1, 1);
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//发送单次读命令
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cmd = ADS1256_CMD_RDATA;
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HAL_SPI_Transmit(&hspi3, &cmd, 1, 1);
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//读24位数据
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HAL_SPI_Receive(&hspi3, (uint8_t *)data, 3, 1);
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sum = (unsigned int)(data[0]<<16)|(data[1]<<8)|data[2];
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//单位转换为mV (VREF=2.5V)
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ulResult = sum;
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if(ulResult & 0x800000)
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{
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ulResult = ~(unsigned long)ulResult;
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ulResult &= 0x7fffff;
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ulResult += 1;
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ulResult = -ulResult;
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ldVolutage = (long double)ulResult*0.000596046518808;
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}
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else
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ldVolutage = (long double)ulResult*0.000596046518808;
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return ldVolutage;
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}
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void adc_task(uint8_t num)
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{
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LL_ADC_REG_StartConversionSWStart(ADC1);
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switch(num)
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{
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case 0 :
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{
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InputReg[2] = (uint16_t)((ADS1256ReadData(1) * 10));// - 1507.8) / 0.082);//阀位反馈（0-25000uA）
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//分段标定，采样值减去段首值除以标定后的增益加段首的理论值
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if(InputReg[2] <= 18312)
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{
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InputReg[2] = (uint16_t)((float)(InputReg[2] - 15036) / 0.819f) + 0 ;
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}
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else if(InputReg[2] > 18312 && InputReg[2] <= 21588)
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{
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InputReg[2] = (uint16_t)((float)(InputReg[2] - 18312) / 0.819f) + 4000 ;
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}
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else if(InputReg[2] > 21588 && InputReg[2] <= 24864)
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{
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InputReg[2] = (uint16_t)((float)(InputReg[2] - 21588) / 0.819f) + 8000 ;
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}
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else if(InputReg[2] > 24864 && InputReg[2] <= 28139)
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{
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InputReg[2] = (uint16_t)((float)(InputReg[2] - 24864) / 0.81875f) + 12000 ;
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}
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else if(InputReg[2] > 28139 && InputReg[2] <= 31414)
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{
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InputReg[2] = (uint16_t)((float)(InputReg[2] - 28139) / 0.81875f) + 16000 ;
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}
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else
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{
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InputReg[2] = (uint16_t)((float)(InputReg[2] - 31414) / 0.81875f) + 20000 ;
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}
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}
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break;
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case 1 :
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{
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InputReg[3] = (uint16_t)((ADS1256ReadData(2) * 10));// - 1507.9) / 0.082);//阀前压力（0-25000uA）
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//分段标定，采样值减去段首值除以标定后的增益加段首的理论值
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if(InputReg[3] <= 18312)
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{
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InputReg[3] = (uint16_t)((float)(InputReg[3] - 15037) / 0.81875f) + 0 ;
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}
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else if(InputReg[3] > 18312 && InputReg[3] <= 21587)
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{
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InputReg[3] = (uint16_t)((float)(InputReg[3] - 18312) / 0.81875f) + 4000 ;
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}
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else if(InputReg[3] > 21587 && InputReg[3] <= 24862)
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{
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InputReg[3] = (uint16_t)((float)(InputReg[3] - 21587) / 0.81875f) + 8000 ;
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}
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else if(InputReg[3] > 24862 && InputReg[3] <= 28137)
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{
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InputReg[3] = (uint16_t)((float)(InputReg[3] - 24862) / 0.81875f) + 12000 ;
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}
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else if(InputReg[3] > 28137 && InputReg[3] <= 31410)
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{
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InputReg[3] = (uint16_t)((float)(InputReg[3] - 28137) / 0.81825f) + 16000 ;
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}
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else
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{
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InputReg[3] = (uint16_t)((float)(InputReg[3] - 31410) / 0.81825f) + 20000 ;
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}
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}
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break;
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case 2 :
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{
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InputReg[11] = (uint16_t)((ADS1256ReadData(3) * 10));// - 1507.8) / 0.082);//ADS1256数据备用（0-25000uA）
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//分段标定，采样值减去段首值除以标定后的增益加段首的理论值
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if(InputReg[11] <= 18311)
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{
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InputReg[11] = (uint16_t)((float)(InputReg[11] - 15032) / 0.81975f) + 0 ;
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}
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else if(InputReg[11] > 18311 && InputReg[11] <= 21590)
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{
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InputReg[11] = (uint16_t)((float)(InputReg[11] - 18311) / 0.81975f) + 4000 ;
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}
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else if(InputReg[11] > 21590 && InputReg[11] <= 24868)
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{
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InputReg[11] = (uint16_t)((float)(InputReg[11] - 21590) / 0.8195f) + 8000 ;
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}
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else if(InputReg[11] > 24868 && InputReg[11] <= 28143)
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{
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InputReg[11] = (uint16_t)((float)(InputReg[11] - 24868) / 0.81975f) + 12000 ;
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}
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else if(InputReg[11] > 28143 && InputReg[11] <= 31419)
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{
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InputReg[11] = (uint16_t)((float)(InputReg[11] - 28143) / 0.81925f) + 16000 ;
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}
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else
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{
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InputReg[11] = (uint16_t)((float)(InputReg[11] - 31419) / 0.81925f) + 20000 ;
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}
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}
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break;
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case 3 :
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{
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InputReg[12] = (uint16_t)((ADS1256ReadData(4) * 10));// - 1507.8) / 0.082);//ADS1256数据备用（0-25000uA）
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//分段标定，采样值减去段首值除以标定后的增益加段首的理论值
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if(InputReg[12] <= 18313)
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{
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InputReg[12] = (uint16_t)((float)(InputReg[12] - 15036) / 0.81925f) + 0 ;
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}
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else if(InputReg[12] > 18313 && InputReg[12] <= 21590)
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{
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InputReg[12] = (uint16_t)((float)(InputReg[12] - 18313) / 0.81925f) + 4000 ;
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}
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else if(InputReg[12] > 21590 && InputReg[12] <= 24867)
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{
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InputReg[12] = (uint16_t)((float)(InputReg[12] - 21590) / 0.81925f) + 8000 ;
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}
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else if(InputReg[12] > 24867 && InputReg[12] <= 28143)
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{
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InputReg[12] = (uint16_t)((float)(InputReg[12] - 24867) / 0.819f) + 12000 ;
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}
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else if(InputReg[12] > 28143 && InputReg[12] <= 31419)
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{
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InputReg[12] = (uint16_t)((float)(InputReg[12] - 28143) / 0.819f) + 16000 ;
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}
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else
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{
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InputReg[12] = (uint16_t)((float)(InputReg[12] - 31419) / 0.819f) + 20000 ;
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}
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}
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break;
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case 4 :
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{
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InputReg[13] = (uint16_t)((ADS1256ReadData(5) * 10));// - 1507.6) / 0.082);//ADS1256数据备用（0-25000uA）
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//分段标定，采样值减去段首值除以标定后的增益加段首的理论值
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if(InputReg[13] <= 18312)
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{
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InputReg[13] = (uint16_t)((float)(InputReg[13] - 15035) / 0.81925f) + 0 ;
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}
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else if(InputReg[13] > 18312 && InputReg[13] <= 21589)
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{
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InputReg[13] = (uint16_t)((float)(InputReg[13] - 18312) / 0.81925f) + 4000 ;
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}
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else if(InputReg[13] > 21589 && InputReg[13] <= 24866)
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{
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InputReg[13] = (uint16_t)((float)(InputReg[13] - 21589) / 0.81925f) + 8000 ;
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}
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else if(InputReg[13] > 24866 && InputReg[13] <= 28142)
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{
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InputReg[13] = (uint16_t)((float)(InputReg[13] - 24866) / 0.819f) + 12000 ;
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}
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else if(InputReg[13] > 28142 && InputReg[13] <= 31417)
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{
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InputReg[13] = (uint16_t)((float)(InputReg[13] - 28142) / 0.81875f) + 16000 ;
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}
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else
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{
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InputReg[13] = (uint16_t)((float)(InputReg[13] - 31417) / 0.81875f) + 20000 ;
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}
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}
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break;
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case 5 :
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{
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InputReg[14] = (uint16_t)((ADS1256ReadData(6) * 10));// - 1508.1) / 0.082);//ADS1256数据备用（0-25000uA）
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//分段标定，采样值减去段首值除以标定后的增益加段首的理论值
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if(InputReg[14] <= 18308)
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{
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InputReg[14] = (uint16_t)((float)(InputReg[14] - 15034) / 0.8185f) + 0 ;
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}
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else if(InputReg[14] > 18308 && InputReg[14] <= 21581)
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{
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InputReg[14] = (uint16_t)((float)(InputReg[14] - 18308) / 0.81825f) + 4000 ;
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}
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else if(InputReg[14] > 21581 && InputReg[14] <= 24854)
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{
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InputReg[14] = (uint16_t)((float)(InputReg[14] - 21581) / 0.81825f) + 8000 ;
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}
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else if(InputReg[14] > 24854 && InputReg[14] <= 28127)
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{
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InputReg[14] = (uint16_t)((float)(InputReg[14] - 24854) / 0.81825f) + 12000 ;
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}
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else if(InputReg[14] > 28127 && InputReg[14] <= 31400)
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{
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InputReg[14] = (uint16_t)((float)(InputReg[14] - 28127) / 0.81825f) + 16000 ;
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}
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else
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{
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InputReg[14] = (uint16_t)((float)(InputReg[14] - 31400) / 0.81825f) + 20000 ;
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}
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}
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break;
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case 6 :
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{
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InputReg[15] = (uint16_t)((ADS1256ReadData(7) * 10));// - 1507.6) / 0.082);//ADS1256数据备用（0-25000uA）
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//分段标定，采样值减去段首值除以标定后的增益加段首的理论值
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if(InputReg[15] <= 18312)
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{
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InputReg[15] = (uint16_t)((float)(InputReg[15] - 15035) / 0.81925f) + 0 ;
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}
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else if(InputReg[15] > 18312 && InputReg[15] <= 21589)
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{
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InputReg[15] = (uint16_t)((float)(InputReg[15] - 18312) / 0.81925f) + 4000 ;
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}
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else if(InputReg[15] > 21589 && InputReg[15] <= 24865)
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{
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InputReg[15] = (uint16_t)((float)(InputReg[15] - 21589) / 0.819f) + 8000 ;
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}
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else if(InputReg[15] > 24865 && InputReg[15] <= 28141)
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{
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InputReg[15] = (uint16_t)((float)(InputReg[15] - 24865) / 0.819f) + 12000 ;
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}
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else if(InputReg[15] > 28141 && InputReg[15] <= 31416)
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{
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InputReg[15] = (uint16_t)((float)(InputReg[15] - 28141) / 0.81875f) + 16000 ;
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}
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else
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{
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InputReg[15] = (uint16_t)((float)(InputReg[15] - 31416) / 0.81875f) + 20000 ;
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}
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}
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break;
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case 7 :
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{
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InputReg[16] = (uint16_t)((ADS1256ReadData(0) * 10));// - 1507.8) / 0.082);//ADS1256数据备用（0-25000uA）
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//分段标定，采样值减去段首值除以标定后的增益加段首的理论值
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if(InputReg[16] <= 18312)
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{
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InputReg[16] = (uint16_t)((float)(InputReg[16] - 15035) / 0.81925f) + 0 ;
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}
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else if(InputReg[16] > 18312 && InputReg[16] <= 21588)
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{
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InputReg[16] = (uint16_t)((float)(InputReg[16] - 18312) / 0.819f) + 4000 ;
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}
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else if(InputReg[16] > 21588 && InputReg[16] <= 24864)
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{
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InputReg[16] = (uint16_t)((float)(InputReg[16] - 21588) / 0.819f) + 8000 ;
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}
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else if(InputReg[16] > 24864 && InputReg[16] <= 28140)
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{
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InputReg[16] = (uint16_t)((float)(InputReg[16] - 24864) / 0.819f) + 12000 ;
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}
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else if(InputReg[16] > 28140 && InputReg[16] <= 31416)
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{
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InputReg[16] = (uint16_t)((float)(InputReg[16] - 28140) / 0.819f) + 16000 ;
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}
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else
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{
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InputReg[16] = (uint16_t)((float)(InputReg[16] - 31416) / 0.819f) + 20000 ;
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}
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}
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break;
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}
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}
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