MCP3428 Arduino Library Causes Serial Port Loss

courtney.tate · July 1, 2020, 4:56pm

Hi there -

I’ve connected the Arduino MKR 1400 GSM to the 4-Channel 4-20 mA Receiver (PR33-15) via I2C shied and ran the following example code from the MCP3428 Arduino library:

github.com

ControlEverythingCommunity/MCP3428/blob/master/Arduino/MCP3428_Arduino_Library/Examples/MCP3428_OneShot_Conversion/MCP3428_OneShot_Conversion.ino

/****************************************************************************
/*
Distributed with a free-will license.
Use it any way you want, profit or free, provided it fits in the licenses of its associated works.
MCP3428
This code is designed to work with the MCP3428_I2CADC I2C Mini Module available from ControlEverything.com.
https://www.controleverything.com/content/Analog-Digital-Converters?sku=MCP3428_I2CADC#tabs-0-product_tabset-2
*/
/****************************************************************************/

#include <MCP3428.h>
#include <Wire.h>

MCP3428 MCP(0); // Declaration of MCP3428: A2, A1, A0 bits (000, 0x68)

void setup()
{
    // Start serial communication and set baud rate = 9600
    Serial.begin(9600);
    Serial.println("MCP3428 Analog to Digital Converter");

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As soon as I upload the code, the boar disappears from the serial port. First of all, how can I reset the device to factory settings so I can start over? Second of all, what is going on with the code that causes this?

Edit: I connected a new Arduino board and then removed everything in the void loop section and replaced with serial.println(“We made it here.”); followed by delay(1000); The new board disappeared from the serial port same as above. This leads me to believe the library itself is causing this issue.

Please help!

Thanks,

Courtney

courtney.tate · July 1, 2020, 5:07pm

Okay, I’ve recovered my Arduino board by double-tapping the RST button and uploading a blank sketch.

Now, I isolated the culprit in the One-Shot code above:

MCP3428 MCP(0); // Declaration of MCP3428: A2, A1, A0 bits (000, 0x68)

Does the value in parentheses need to be updated?

Bhaskar · July 1, 2020, 6:15pm

you can run the i2c scan code and see whats the i2c address is set on the board.

hardware address should match this address.