Help with I2C soil moisture sensor libraries

Firmware Libraries
1

I’m trying to use this I2C soil moisture sensor with the Electron

Their github refers to this tutorial for working with particle devices.

The libraries and code example are here

I have tried to port Apollo77’s examples using the above-mentioned tutorial

Basically, this is their instructions for porting the code are
" 3) INCLUDES In any library or example files you added to your project, strip out “define if/else” statements and their contents, then replace them with the following line (which will add Wire library and device functionality): #include “Particle.h”
"

I tried this with no success because of the wire library.

I was wondering if someone has already got this sensor working on a particle device and could share their code.

Thanks

2

What is this supposed to mean?
Do you get any error messages? Posting them would help.

But without knowing your error messages, I'd guess you get a file not found message, which is exactly why they said "wire library is included via Particle.h"

And looking at the library, I'd also say

//define release-independent I2C functions
#if defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)
#include <TinyWireM.h>
#define i2cBegin TinyWireM.begin
#define i2cBeginTransmission TinyWireM.beginTransmission
#define i2cEndTransmission TinyWireM.endTransmission
#define i2cRequestFrom TinyWireM.requestFrom
#define i2cRead TinyWireM.receive
#define i2cWrite TinyWireM.send
#elif ARDUINO >= 100
#include <Wire.h>
#define i2cBegin Wire.begin
#define i2cBeginTransmission Wire.beginTransmission
#define i2cEndTransmission Wire.endTransmission
#define i2cRequestFrom Wire.requestFrom
#define i2cRead Wire.read
#define i2cWrite Wire.write
#else
#include <Wire.h>
#define i2cBegin Wire.begin
#define i2cBeginTransmission Wire.beginTransmission
#define i2cEndTransmission Wire.endTransmission
#define i2cRequestFrom Wire.requestFrom
#define i2cRead Wire.receive
#define i2cWrite Wire.send
#endif

should be replaced with

#include "Particle.h"
#define i2cBegin             Wire.begin
#define i2cBeginTransmission Wire.beginTransmission
#define i2cEndTransmission   Wire.endTransmission
#define i2cRequestFrom       Wire.requestFrom
#define i2cRead              Wire.read
#define i2cWrite             Wire.write
3

Much Thanks ScruffR !

The changes you suggested to the .cpp file fixed my issue - everything working fine now.

For other newbies that might be working with with this sensor, here are a few notes:

Use the library and examples provided by Apollo77

  1. modify I2CSoilMoistureSensor.cpp as ScruffR has shown above
  2. modify I2CSoilMoistureSensor.h by replacing

#if defined(ARDUINO) && ARDUINO >= 100
#include <Arduino.h>
#else
#include <WProgram.h>
#endif

With

#include “Particle.h”

  1. in the example programs like ReadSensorData.ino
    delete #include Wire.h

  2. remember to include 10K pull up resistors on D0 (SDA) and D1 (SCK) - these ports are wired to pins SDA and SCK on the sensor header. Wire VCC to 3.3V and GND to GND - four wires total. The MISO and Reset pins on the sensor are not used for these examples

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