怎么使用PRoC和ACS712进行交流电流测量

你好，同事们，
我试着用YouPro（EVALKIT）和ActhoSACS712来测量交流电流，但我只能测量噪声。我使用的ADC SAR块与4.8VDC作为参考和非常快的采样（125kSAMPPLESPER秒）。ADC SAR块截图附上并附有代码：
CysISR（ADCX-SARYA SEQUISISR）{if（计数＝0）{min＝4096；max＝0；}
Read Value= ADClSARYA SEQUGETRESULT16（0）；//通道0将我的引脚连接到ACS712输出IF（Read Value＆Gt；max）max＝Read Valuy；IF（Read ValtualLt.Min）MIN＝Read Value；Cl+++；If（Calt & Gt；= 25000）// 0.2秒{
MAP＝2.5×（max min）；//（1000×0.353×4800）/（4095×166）＝2.5／/1000是ATO MA，0.353来自VPP ToVRMS，48×MVISVREF，4095是分辨率的比特，166是MyACS712计数＝0；
根本问题是马克斯和Min值总是几乎相同（0x5DANDX5B），不管哪种负载（无负载，30Ma，200 MAOR350MA）都是连接的。我认为ADC SAR不是真的采样这么快，这就是为什么我总是测量相同的，你们中有人知道会发生什么吗？
提前感谢，
彼得
AdCl 2Y1.PNG
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AdCl 1I1.PNG
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     以下为原文
  Hello colleagues,
    I am trying to measure AC current with your PRoC (Eval Kit) and the Allegro's ACS712 but I can just measure noise. I am using the ADC SAR Block with 4.8Vdc as reference and very fast sampling (125ksamples per second). The ADC SAR block screenshots are attached and below is the code:
    CY_ISR(ADC_SAR_SEQ_ISR)
{
     
     if (count == 0)
     {
         min=4096;
         max=0;
     }
        readValue = ADC_SAR_SEQ_GetResult16(0);    // Channel 0 is connected my pin to the ACS712 output
     
     if (readValue > max)
         max = readValue;
     if (readValue < min)
         min = readValue;
     count++;
     
     if (count >= 25000) // 0.2 seconds
     {
            mamp = 2.5*(max-min); // (1000*0.353*4800)/(4095*166)=2.5   // 1000 is A to mA, 0.353 is from Vpp to Vrms, 4800mV is Vref, 4095 are the bits of resolution and 166 is the mV/A given by my ACS712
         count=0;
     }
         
}
    The root problem is that Max and min values are always almost the same (0x5D and 0x5B), no matter which load (no load, 30mA, 200mA or 350mA) is connected. I think the ADC SAR is not really sampling so fast and that's why I measuring always the same, does any of you have an idea of what can be happening?
    Thanks in advance,
    Peter

•    ADC_2_1.PNG 43.5 K
•    ADC_1_1.PNG 81.3 K