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arduino-cli/libraries/Adafruit_MLX90614_Soft/Adafruit_MLX90614_Soft.cpp

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+/*************************************************** 
+  This is a library for the MLX90614 Temp Sensor
+
+  Designed specifically to work with the MLX90614 sensors in the
+  adafruit shop
+  ----> https://www.adafruit.com/products/1748
+  ----> https://www.adafruit.com/products/1749
+
+  These sensors use I2C to communicate, 2 pins are required to  
+  interface
+  Adafruit invests time and resources providing this open source code, 
+  please support Adafruit and open-source hardware by purchasing 
+  products from Adafruit!
+
+  Written by Limor Fried/Ladyada for Adafruit Industries.  
+  BSD license, all text above must be included in any redistribution
+ ****************************************************/
+#include <SoftwareWire.h>
+#include "Adafruit_MLX90614_Soft.h"
+
+Adafruit_MLX90614_Soft::Adafruit_MLX90614_Soft(void) {
+}
+
+
+boolean Adafruit_MLX90614_Soft::begin(SoftwareWire *theWire, uint8_t i2caddr) {
+  _wire = theWire;
+  _addr = i2caddr;
+  _wire->begin();
+
+  /*
+  for (uint8_t i=0; i<0x20; i++) {
+    Serial.print(i); Serial.print(" = ");
+    Serial.println(read16(i), HEX);
+  }
+  */
+  return true;
+}
+
+//////////////////////////////////////////////////////
+
+
+double Adafruit_MLX90614_Soft::readObjectTempF(void) {
+  return (readTemp(MLX90614_TOBJ1) * 9 / 5) + 32;
+}
+
+
+double Adafruit_MLX90614_Soft::readAmbientTempF(void) {
+  return (readTemp(MLX90614_TA) * 9 / 5) + 32;
+}
+
+double Adafruit_MLX90614_Soft::readObjectTempC(void) {
+  return readTemp(MLX90614_TOBJ1);
+}
+
+
+double Adafruit_MLX90614_Soft::readAmbientTempC(void) {
+  return readTemp(MLX90614_TA);
+}
+
+float Adafruit_MLX90614_Soft::readTemp(uint8_t reg) {
+  float temp;
+  
+  temp = read16(reg);
+  temp *= .02;
+  temp  -= 273.15;
+  return temp;
+}
+
+/*********************************************************************/
+
+uint16_t Adafruit_MLX90614_Soft::read16(uint8_t a) {
+  uint16_t ret;
+
+  _wire->beginTransmission(_addr); // start transmission to device 
+  _wire->write(a); // sends register address to read from
+  _wire->endTransmission(false); // end transmission
+  
+  _wire->requestFrom(_addr, (uint8_t)3);// send data n-bytes read
+  ret = _wire->read(); // receive DATA
+  ret |= _wire->read() << 8; // receive DATA
+
+  uint8_t pec = _wire->read();
+
+  return ret;
+}