Richard Kuo / Mbed OS NTOUEE-mbed-I2C_MLX90614

I2C MLX90614 InfraRed Thermo sensor

mlx90614.cpp@0:0f4840f6bf23, 2016-10-25 (annotated)

Committer:
rkuo2000
Date:
Tue Oct 25 10:42:06 2016 +0000
Revision:
0:0f4840f6bf23
I2C MLX90614 InfraRed Thermo sensor

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rkuo2000 0:0f4840f6bf23 1 #include "mbed.h"
rkuo2000 0:0f4840f6bf23 2 #include "mlx90614.h"
rkuo2000 0:0f4840f6bf23 3
rkuo2000 0:0f4840f6bf23 4 I2C mlx90614_i2c(PD_12, PD_10); // I2C1_SDA, I2C1_SCL
rkuo2000 0:0f4840f6bf23 5
rkuo2000 0:0f4840f6bf23 6 void MLX90614_WriteByte(uint8_t MLX90614_reg, uint8_t MLX90614_data)
rkuo2000 0:0f4840f6bf23 7 {
rkuo2000 0:0f4840f6bf23 8 char data_out[2];
rkuo2000 0:0f4840f6bf23 9 data_out[0]= MLX90614_reg;
rkuo2000 0:0f4840f6bf23 10 data_out[1]= MLX90614_data;
rkuo2000 0:0f4840f6bf23 11 mlx90614_i2c.write(MLX90614_slave_addr, data_out, 2, 0);
rkuo2000 0:0f4840f6bf23 12 }
rkuo2000 0:0f4840f6bf23 13
rkuo2000 0:0f4840f6bf23 14 uint16_t MLX90614_ReadByte(uint8_t MLX90614_reg)
rkuo2000 0:0f4840f6bf23 15 {
rkuo2000 0:0f4840f6bf23 16 char data_out[1], data_in[3];
rkuo2000 0:0f4840f6bf23 17 data_out[0] = MLX90614_reg;
rkuo2000 0:0f4840f6bf23 18 mlx90614_i2c.write(MLX90614_slave_addr, data_out, 1, 1);
rkuo2000 0:0f4840f6bf23 19 mlx90614_i2c.read(MLX90614_slave_addr, data_in, 3, 0);
rkuo2000 0:0f4840f6bf23 20 return ((data_in[1]<<8)+data_in[0]);
rkuo2000 0:0f4840f6bf23 21 }
rkuo2000 0:0f4840f6bf23 22
rkuo2000 0:0f4840f6bf23 23 uint16_t MLX90614::getTA()
rkuo2000 0:0f4840f6bf23 24 {
rkuo2000 0:0f4840f6bf23 25 uint16_t t;
rkuo2000 0:0f4840f6bf23 26 t = MLX90614_ReadByte(MLX90614_TA); // Ambient Temperature
rkuo2000 0:0f4840f6bf23 27 return ((t*2) - 27315) /100;
rkuo2000 0:0f4840f6bf23 28 }
rkuo2000 0:0f4840f6bf23 29
rkuo2000 0:0f4840f6bf23 30 uint16_t MLX90614::getTOBJ1()
rkuo2000 0:0f4840f6bf23 31 {
rkuo2000 0:0f4840f6bf23 32 uint16_t t;
rkuo2000 0:0f4840f6bf23 33 t = MLX90614_ReadByte(MLX90614_TOBJ1); // Object Temperature 1
rkuo2000 0:0f4840f6bf23 34 return ((t*2) - 27315) /100;
rkuo2000 0:0f4840f6bf23 35 }