VEML6070.cpp

00001 /***************************************************
00002   This is a library for the VEML6070 UV-A Sensor
00003 
00004   Works with the VEML6070 sensor from Adafruit
00005   ----> https://www.adafruit.com/products/2899
00006   Or knock-off sensors from aliexpress
00007 
00008   These sensors use I2C to communicate, 2 pins are required to
00009   interface
00010 
00011   06/09/2017 - Initial mbed driver by Scott Roberts
00012  ****************************************************/
00013 
00014 #include "VEML6070.h"
00015 VEML6070::VEML6070 (I2C& p_i2c) : _i2c(p_i2c)
00016 {
00017 
00018 }
00019 
00020 void VEML6070::begin(veml6070_integrationtime_t itime)
00021 {
00022     _i2c.read((int)0x18,dt,1,false);
00023     dt[0]=((itime << 2) | 0x02);
00024     _i2c.write((int)VEML6070_ADDR_L,dt,2,false);
00025     Thread::wait(500);
00026 }
00027 
00028 uint16_t VEML6070::readUV()
00029 {
00030     uint16_t uvi;
00031     _i2c.read(VEML6070_ADDR_H, dt,1);
00032     uvi = dt[0]<<8;
00033     _i2c.read(VEML6070_ADDR_L, dt,1,false);
00034     uvi |= dt[0];
00035 
00036     return uvi;
00037 }
00038