CN0429 terminal output question

Dear Brandon,

Thank you very much for your support.

We have got a temporary solution by deleting the extra columns (Real and Imaginary) and decrease the reading process from 5 to 3 as we have discussed before.

snprintf((char*) TXbuff, 256, "Frequency, Magnitude, Phase%s", _EOS);

       UART_TX((const char*) TXbuff);

       for (int j = 0; j < 12; j++) {

              int2binString(EISresults[0 + (j * 3)], gBuff, 32);

              EISpartialresult[0] = Ieee754ConvertToDouble(gBuff);

              int2binString(EISresults[1 + (j * 3)], gBuff, 32);

              EISpartialresult[1] = Ieee754ConvertToDouble(gBuff);

              int2binString(EISresults[2 + (j * 3)], gBuff, 32);

              EISpartialresult[2] = Ieee754ConvertToDouble(gBuff);

              int2binString(EISresults[3 + (j * 3)], gBuff, 32);

              EISpartialresult[3] = Ieee754ConvertToDouble(gBuff);

              int2binString(EISresults[4 + (j * 3)], gBuff, 32);

              EISpartialresult[4] = Ieee754ConvertToDouble(gBuff);

              flushBuff(TXbuff, sizeof(TXbuff));

              snprintf((char*) TXbuff, 256, "%f, %f, %f%s", EISpartialresult[0],

                     EISpartialresult[1], EISpartialresult[2], _EOS);

              UART_TX((const char*) TXbuff);

The same thing has been done to readeisfull command by decreasing from 17 to 15. It also work but we have problem with real and imaginary items again in the table. It looks the real and imaginary part are not correctly transferred to the export process.

snprintf((char*) TXbuff, 256,

              "Frequency, Rload+Rsens_real, Rload+Rsens_img, Rload_real, Rload_imag, Rcal_real, Rcal_imag, Mag_Rsens+Rload, Mag_Rload, Mag_Rcal, Mag_Rsens, MAG, PHASE, Real_Mag, Imag_Mag%s",

              _EOS);

       UART_TX((const char*) TXbuff);

       for (int j = 0; j < 12; j++) {

              int2binString(EISresults[0 + (j * 15)], gBuff, 32);

              EISpartialresult[0] = Ieee754ConvertToDouble(gBuff);

              for (i = 0; i < 6; i++) {

                     memcpy(&EISpartialDFTresult[i],

                            (int32_t*) &EISresults[i + 1 + (j * 15)],

                            sizeof(EISresults[i + 1 + (j * 15)]));

              }

              for (i = 1; i < 11; i++) {

                     int2binString(EISresults[i + 6 + (j * 15)], gBuff, 32);

                     EISpartialresult[i] = Ieee754ConvertToDouble(gBuff);

              }

              flushBuff(TXbuff, sizeof(TXbuff));

              snprintf((char*) TXbuff, 256,

                     "%f, %ld, %ld, %ld, %ld, %ld, %ld, %f, %f, %f, %f, %f, %f, %f, %f%s",

                     EISpartialresult[0], EISpartialDFTresult[0],

                     EISpartialDFTresult[1], EISpartialDFTresult[2],

                     EISpartialDFTresult[3], EISpartialDFTresult[4],

                     EISpartialDFTresult[5], EISpartialresult[1],

                     EISpartialresult[2], EISpartialresult[3],

                     EISpartialresult[4], EISpartialresult[5],

                     EISpartialresult[6], EISpartialresult[9],

                     EISpartialresult[10], _EOS);

              UART_TX((const char*) TXbuff);

This update give us very similar results as suggested in the manual.

-----------------

Frequency, Magnitude, Phase

1000.000000, 279080.593750, -94.463417

5000.000000, 1073950.375000, -125.602722

10000.000000, 1503471.000000, -15.889310

20000.000000, 340282366920938463463374607431768211456.000000, 21.361069

30000.000000, 340282366920938463463374607431768211456.000000, 77.061516

40000.000000, 1939687.250000, 42.787781

50000.000000, 340282366920938463463374607431768211456.000000, -171.448898

60000.000000, 340282366920938463463374607431768211456.000000, -115.662666

70000.000000, 340282366920938463463374607431768211456.000000, -59.839993

90000.000000, 4141493.500000, 56.602055

160000.000000, 1533480.750000, 147.346527

200000.000000, 2433025.000000, 158.861649

----------------------

Frequency, Rload+Rsens_real, Rload+Rsens_img, Rload_real, Rload_imag, Rcal_real, Rcal_imag, Mag_Rsens+Rload, Mag_Rload, Mag_Rcal, Mag_Rsens, MAG, PHASE, Real_Mag, Imag_Mag

1000.000000, 17, 3, 4148, -42519, 2337, -23974, 17.262676, 42720.851562, 24087.636719, 42722.191406, 279080.593750, -94.463417, 5000.000000, 0.000000

5000.000000, 2, 4, 19890, -37656, 11213, -21234, 4.472136, 42586.222656, 24012.791016, 42588.828125, 1073950.375000, -125.602722, 10000.000000, 0.000000

10000.000000, 3, -1, 34823, -23764, 19634, -13405, 3.162278, 42158.855469, 23773.681641, 42155.812500, 1503471.000000, -15.889310, 20000.000000, 0.000000

20000.000000, 0, 0, 37708, 14769, 21265, 8317, 0.000000, 40497.117188, 22833.587891, 40497.117188, 340282366920938463463374607431768211456.000000, 21.361069, 30000.000000, 0.000000

30000.000000, 0, 0, 8448, 36902, 4779, 20802, 0.000000, 37856.652344, 21343.900391, 37856.652344, 340282366920938463463374607431768211456.000000, 77.061516, 40000.000000, 0.000000

40000.000000, 0, 2, -23401, 25232, -13176, 14236, 2.000000, 34413.085938, 19397.697266, 34411.621094, 1939687.250000, 42.787781, 50000.000000, 0.000000

50000.000000, 0, 0, -30052, -4556, -16939, -2547, 0.000000, 30395.390625, 17129.417969, 30395.390625, 340282366920938463463374607431768211456.000000, -171.448898, 60000.000000, 0.000000

60000.000000, 0, 0, -11247, -23503, -6358, -13233, 0.000000, 26055.441406, 14681.159180, 26055.441406, 340282366920938463463374607431768211456.000000, -115.662666, 70000.000000, 0.000000

70000.000000, 0, 0, 10905, -18690, 6124, -10539, 0.000000, 21638.742188, 12189.088867, 21638.742188, 340282366920938463463374607431768211456.000000, -59.839993, 90000.000000, 0.000000

90000.000000, 0, 1, -30736, 20164, -17288, 11399, 1.000000, 36759.878906, 20707.779297, 36759.328125, 4141493.500000, 56.602055, 160000.000000, -680564652712238512320067519074531278848.000000

160000.000000, -2, 0, 22987, -14600, 12910, -8274, 2.000000, 27231.638672, 15333.856445, 27233.328125, 1533480.750000, 147.346527, 200000.000000, 0.000000

200000.000000, 0, -1, 7691, 20196, 4387, 11346, 1.000000, 21610.875000, 12164.599609, 21611.808594, 2433025.000000, 158.861649, -680564693277057719623408366969033850880.000000, -680564693277057719623408366969033850880.000000

But we see very big numbers like 340282366920938463463374607431768211456.000000 or -680564693277057719623408366969033850880.000000 randomly appears. What is this? Sensor reading problem or firmware problem?

Another problem is I said before Real Mag and Imag Mag results are very strange coming out as the next freq. value and zero. Something related to data transfer problem should be solved.

For calibration our system we need your suggestions.

So some of the changes have been committed and merged here - projects: cn0428_cn0429: Column wrap temp fix · analogdevicesinc/EVAL-ADICUP3029@5c83206 (github.com)  But there still needs to be some additional investigation and testing regarding the second part of your question.  I've ordered a set of CN0429 hardware for the firmware engineer so they can look at this in more detail.  Hope to get back to you shortly once the new hardware setup has been delivered.