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Project

MLX90614 - Reading and writing via SMBus

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Author: Matej Nogić

Last Updated: 2017-02-26

Category: Measurement

Downloaded: 186 times

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Project demonstrates reading and writing to a MLX90614 temperature sensor.

Program is controlled over UART, baud rate: 19200bps
Write "Read" to read all the register's values
Write "Write" to write settings listed from line 178.

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Download Project [309.12KB]

Version 1.0.0.0

DOWNLOAD LINK RELATED COMPILER CONTAINS
mikroC PRO for PIC
  • lib
  • src
  • exa
  • hlp
  • hex
  • sch
  • pcb
  • doc

Project Blog

Project demonstrates reading and writing to a MLX90614 temperature sensor.  Program is controlled over UART, baud rate: 19200bps
Write "Read" to read all the register's values
Write "Write" to write settings listed from line 178.

Tmin and Tmax should be written in degrees Celsius,
others registers should be written in raw format.

If you want to switch from PWM mode back to SMBus mode
you need to pull SCL pin low for a time longer than 1.024ms.
This will allow you to communicate with a sensor over SMBus
but the PWMCTRL register value will NOT change. So if you want to
stay in a SMBus mode after POR you have to change the PWMCTRL
register value manually.

Reading

Reading

"Read" command

View full image
Writing

Writing

"Write" command

View full image
Writing

Writing

Put here what you want to write

View full image

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