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ARM7TDMI - Obtain ARM Core Temperature

Pheonix Ashes
Note: This was originally posted on 9th June 2011 at http://forums.arm.com

Hi All,

I want to measure the temperature of LPC2129 ARM processor core.
The LPC2129 manual doesnt show if there is a temperature sensor in the ARM core.
Is there any other way to obtain the temperature using some tools or code?
Is is possible to code in some RTOS to get the temperature details?


Thanks & Regards,

Bijju Kranthi V,
MTech Final Year Student,
IIT Kharagpur
Parents
  • Arm Employee Badge
    Note: This was originally posted on 9th June 2011 at http://forums.arm.com

    Hi there,

    There is no temperature sensor in the processor core (ARM7TDMI).
    Since the microcontroller you're using doesn't seem to have any temperature sensor, you need to add an external temperature sensor component. There are many temperature sensors you can use, for example, one with SPI interface, which can be (should be) connected to the SPI interface on you microcontroller chip. Google for "spi temperature sensor" will give you plenty of choices.
    You will then need to program the SPI interface to detect the temperature.

    For NXP chip specific questions, there is a public forum at http://tech.groups.yahoo.com/group/lpc2000/

    regards,
    Joseph
Reply
  • Arm Employee Badge
    Note: This was originally posted on 9th June 2011 at http://forums.arm.com

    Hi there,

    There is no temperature sensor in the processor core (ARM7TDMI).
    Since the microcontroller you're using doesn't seem to have any temperature sensor, you need to add an external temperature sensor component. There are many temperature sensors you can use, for example, one with SPI interface, which can be (should be) connected to the SPI interface on you microcontroller chip. Google for "spi temperature sensor" will give you plenty of choices.
    You will then need to program the SPI interface to detect the temperature.

    For NXP chip specific questions, there is a public forum at http://tech.groups.yahoo.com/group/lpc2000/

    regards,
    Joseph
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