MLX9062x Class Reference

Select device MLX90620 or MLX90621.

Definition at line 140 of file MLX90620.h.

Create a MLX90620 object using the specified I2C object.

Original Constructor

Parameters:

sda	pin for I2C object
scl	pin for I2C object
name	of MLX90620 object

Definition at line 13 of file MLX90620.cpp.

Create a MLX9062x object using the specified I2C object.

New Constructor with ability to select between a MLX90620 and MLX90621

Parameters:

sda	pin for I2C object
scl	pin for I2C object
MLXdevice	select between mlx90620 and mlx90621 device
name	of MLX9062x object

Definition at line 22 of file MLX90620.cpp.

Calculate temperature of any pixel within the array (0 - 63)

After an IR array dump into local buffer

Parameters:

set	int(0-63) of pixel to convert,
pointer	to struct mlx_struct

Returns:

pixel temperature of selected pixel in degC

Calculate initial MLX9062x offsets.

Performed only at initialization

Sets the MLX9062x with die correcting factors at initialization

Parameters:

pointer

to struct mlx_struct

Returns:

NONE

Get the MLX9062x's Configuration Register.

16 bit value, Read from MLX RAM

Periodic check for Ta ready, IR Array ready and brownout conditions

Parameters:

pointer

to struct mlx_struct

Returns:

CR - Configuration Register value

Get the MLX9062x's die temperature in degC.

Returns MLX9062x die temperature

Needs to be performed before every array update calculation

Parameters:

pointer

to struct mlx_struct

Returns:

die temperature of MLX9062x in degC

Get the MLX9062x's Oscillator Trim Register.

7 lsb bits from 16 bit value, Read from MLX RAM

Parameters:

pointer

to struct mlx_struct

Returns:

OTR - Oscillator Trim Register value

Get the MLX9062x's PTAT register.

Register read at every Ta cycle

16 bit value, PTAT sensor, Read from MLX RAM

Returns the Proportional To Ambient Temperature Register value

Parameters:

pointer

to struct mlx_struct

Returns:

PTAT Register value

Get the MLX9062x's TGC register.

16 bit value, TGC, Read from MLX RAM

Returns the Temperature Gradient Coefficient Register value

Parameters:

pointer

to struct mlx_struct

Returns:

TGC - Temperature Gradient Coefficient Register value

Copy the contents of the MLX9062x EEPROM into local buffer.

Loads all 256 bytes from EEPROM into local buffer inside mlx_struct

Note: Only done at initialization. MUST be the first thing you do in MAIN.

Parameters:

pointer

to struct mlx_struct

Returns:

'1' if i2c error, '0' if ok.

Definition at line 33 of file MLX90620.cpp.

Get the MLX9062x's IR pixel array and dump into local buffer.

Loads IR Pixel array into buffer (0x7F bytes, 0x3f Pixels), Read from MLX RAM

Parameters:

pointer

to struct mlx_struct

Returns:

NONE

Set the MLX9062x's Configuration Register.

16 bit value set by code at initialization

Register is set only during initialization. Inital setup:

1. ADC low reference

2. Ta Ref Rate 8Hz

3. I2C FM+ mode enabled

4. MD / Brownout bit set

5. Normal Operation (non-Sleep) mode

6. Step(Melexis reserved) mode. (removed from later datasheets, but used in this code)

7. IR refresh rate 4Hz

Parameters:

pointer

to struct mlx_struct

Returns:

'1' if i2c error, '0' if ok.

Initialize the MLX9062x's Oscillator Trim Register.

7 lsb bits from 16 bit value,

Data is derived from values received from the EEPROM

Register is only set once during initialization

Parameters:

pointer

to struct mlx_struct

Returns:

'1' if i2c error, '0' if ok.

Start a Ta and IR array conversion update cycle.

MLX9062x starts aquiring data, takes about 250mS /w 4Hz refresh rate

Also calls GetPTATReg() and GetTGCReg()

Parameters:

pointer

to struct mlx_struct

Returns:

'1' if i2c error, '0' if ok.