RAK1904_Accelerate_LIS3DH.ino

/**
   @file RAK1904_Accelerate_LIS3DH.ino
   @author rakwireless.com
   @brief Setup and read values from a lis3dh sensor
   @version 0.1
   @date 2020-12-28
   @copyright Copyright (c) 2020
**/


#include <Arduino.h>
#include "SparkFunLIS3DH.h" //http://librarymanager/All#SparkFun-LIS3DH
#include <Wire.h>

#define CONVERT_G_TO_MS2    9.80665f
#define FREQUENCY_HZ        50
#define INTERVAL_MS         (1000 / (FREQUENCY_HZ + 1))

LIS3DH SensorTwo(I2C_MODE, 0x18);

void lis3dh_get()
{
  // read the sensor value
  float x, y, z;
  x = SensorTwo.readFloatAccelX() * CONVERT_G_TO_MS2;
  y = SensorTwo.readFloatAccelY() * CONVERT_G_TO_MS2;
  z = SensorTwo.readFloatAccelZ() * CONVERT_G_TO_MS2;

  Serial.print(x);
  Serial.print(',');
  Serial.print(y);
  Serial.print(',');
  Serial.println(z);
}

void setup()
{
	time_t timeout = millis();
	Serial.begin(115200);
	while (!Serial)
	{
		if ((millis() - timeout) < 5000)
    {
      delay(100);
    }
    else
    {
      break;
    }
	}

	if (SensorTwo.begin() != 0)
	{
		Serial.println("Problem starting the sensor at 0x18.");
	}
	else
	{
		Serial.println("Sensor at 0x18 started.");
		// Set low power mode
		uint8_t data_to_write = 0;
		SensorTwo.readRegister(&data_to_write, LIS3DH_CTRL_REG1);
		data_to_write |= 0x08;
		SensorTwo.writeRegister(LIS3DH_CTRL_REG1, data_to_write);
		delay(100);

		data_to_write = 0;
		SensorTwo.readRegister(&data_to_write, 0x1E);
		data_to_write |= 0x90;
		SensorTwo.writeRegister(0x1E, data_to_write);
		delay(100);
	}
	Serial.println("enter !");
}

void loop()
{
    lis3dh_get();
    delay(INTERVAL_MS);
}