关于ADS1259自动校准

这是DS上的描述

void Calibration_1259(void)
{
Shield_SamplingInterrupt(); // ÆÁ±ÎÖжÏ
/*Set the gate control mode (PULSE bit = 0)*/

ADC_StartConv();                                          /*Start the ADS1259 conversions*/
DAC_Write(0x8000);                                         /*Apply the appropriate input to the ADS1259 (zero)输出0V*/
delay_ms(20);                                                   /*Allow time for the input to completely settle*/
ADC_WR_CMD(OFSCAL_1259);                   /*Send the OFSCAL command, as appropriate*/
while(ADC_DRDY == 1);
ADC_StopConv();
delay_ms(10);
ADC_StartConv();                                           /*Start the ADS1259 conversions*/
DAC_Write(0xFFFF);                                     /*Apply the appropriate input to the ADS1259 (full-scale)输出2.5V*/
delay_ms(10);                                                /*Allow time for the input to completely settle*/
ADC_WR_CMD(GANCAL_1259);                /*Send the OFSCAL command, as appropriate*/
while(ADC_DRDY == 1);
ADC_StopConv();

Open_SamplingInterrupt(); 
}

这是我根据数据手册描述写的校准程序。

校准后的读到的值完全不对。

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