UNO board: No response from series port (uint8_t, size_t)

Projects Programming
1

Hi guys.

I met a question when I use Arduino UNO board. Could you guys please help me with that?

2

Please provide details like your code and the version of the IDE. When posting code, please use code tags (the </> button). The same applies when posting errors.

I suspect that English is not your native language but below is difficult to understand. Can you try to rephrase? Is it an error message when you try to compile?

3

I use the UNO board, with [ProtoCentral_fdc1004_breakout]. The arduino coding is from (GitHub - Protocentral/ProtoCentral_fdc1004_breakout: A breakout board for the Texas Instruments FDC1004 capacitance to digital converter) in GitHub. The first time I soldered sensor with UNO, did a little modification of code (please see attached file) and uploaded code. I did see the data which coming from the series port of Arduino IDE. After that I uploaded again. It doesn't work any more. I could uploaded code successfully, with only one line ' Cannot locate "flash" and "boot" memories in description'. But in series port, no data appears. If I tried another different coding (like print something each second), the series port show words I set. Then I tried another MCU (NANO Every boards), the same questions as I mentioned above.

#include <Wire.h>
#include <Protocentral_FDC1004.h>

#define UPPER_BOUND  0X4000                 // max readout capacitance
#define LOWER_BOUND  (-1 * UPPER_BOUND)
#define CHANNEL 0                          // channel to be read
#define MEASURMENT 0                       // measurment channel

int capdac = 0;
char result[100];
unsigned long timer1 = 0;
unsigned long lastMillis = 0;

FDC1004 FDC;

void setup()
{
  Wire.begin();        //i2c begin
  Serial.begin(115200); // serial baud rate
}

void loop()
{

  FDC.configureMeasurementSingle(MEASURMENT, CHANNEL, capdac);
  FDC.triggerSingleMeasurement(MEASURMENT, FDC1004_100HZ);
 
  //wait for completion
  delay(15);
  uint16_t value[2];
  if (! FDC.readMeasurement(MEASURMENT, value))
  {
    int16_t msb = (int16_t)value[0];
    int32_t capacitance = ((int32_t)457) * ((int32_t)msb); //in attofarads
    capacitance /= 1000;   //in femtofarads
    capacitance += ((int32_t)3028) * ((int32_t)capdac);


   if (millis() - timer1 > 5000)
    {
    timer1 = millis();
    Serial.print((((float)capacitance/1000)),4);
    Serial.print("  pf, ");
    Serial.println();
    }

    if (msb > UPPER_BOUND)               // adjust capdac accordingly
  {
      if (capdac < FDC1004_CAPDAC_MAX)
    capdac++;
    }
  else if (msb < LOWER_BOUND)
  {
      if (capdac > 0)
    capdac--;
    }

  }
}

But with more information shown as follow:

In file included from C:\Users\maeuser\Documents\Arduino\libraries\ProtoCentral_fdc1004_breakout-1.0.2\src/Protocentral_FDC1004.h:25:0,
                 from C:\Users\maeuser\Documents\Arduino\libraries\ProtoCentral_fdc1004_breakout-1.0.2\src\Protocental_FDC1004.cpp:21:
C:\Users\maeuser\Documents\ArduinoData\packages\arduino\hardware\megaavr\1.8.7\libraries\Wire\src/Wire.h: In member function 'uint16_t FDC1004::read16(uint8_t)':
C:\Users\maeuser\Documents\ArduinoData\packages\arduino\hardware\megaavr\1.8.7\libraries\Wire\src/Wire.h:63:12: note: candidate 1: size_t TwoWire::requestFrom(int, int)
     size_t requestFrom(int, int);
            ^~~~~~~~~~~
C:\Users\maeuser\Documents\ArduinoData\packages\arduino\hardware\megaavr\1.8.7\libraries\Wire\src/Wire.h:61:12: note: candidate 2: virtual size_t TwoWire::requestFrom(uint8_t, size_t)
     size_t requestFrom(uint8_t, size_t);
            ^~~~~~~~~~~
Sketch uses 8828 bytes (17%) of program storage space. Maximum is 49152 bytes.
Global variables use 550 bytes (8%) of dynamic memory, leaving 5594 bytes for local variables. Maximum is 6144 bytes.
avrdude: jtagmkII_initialize(): Cannot locate "flash" and "boot" memories in description

I tried debug several times and I found that the following two lines doesn't work when sensor board is connected with UNO. So it may due to the issue from I2C transmission in the code. But I have no idea how to modified it.

  FDC.configureMeasurementSingle(MEASURMENT, CHANNEL, capdac);
  FDC.triggerSingleMeasurement(MEASURMENT, FDC1004_100HZ);

Could you please provide a trend to me about that? Tenfold thanks.

4

Hi~ I made a mistake yesterday when uploading the words. I had already upload the code. Would you mind have a look? Thanks so much for your kindly reminder.

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