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TMP102 one-shot model problem

si li1
Prodigy 140 points
Other Parts Discussed in Thread: TMP102

Hi,

I am using TMP102 and I want it to work in the One-shot model. While now ,when I write 0x61A0 into the configuration register, when I try to read the value of the configuration register, it is 0xE1A0.  According to the page 9 of the document for TMP102, after each conversion, the OS bit would be 1. 

Then how could I write 1 to OS again, if OS bit is 1?  I need to write 1 to OS bit every time I want to trigger a conversion.

 

Thanks

Si

  • 0
    Prodigy 140 points

    Hi,

    I just figure it out . And I would post my way here in case someone else may need it someday.

    To make it work in the one-shot mode, after each conversion, the OS is 1. And it will not change to 0 unless you change it manully. So, every time you want to trigger a conversion. Write a 0 to OS bit first, then write a 1 to OS bit, then change the pointer register back to the temp register. Then you can read it.

     

    They have to been done every time you want  get a new data!!!

     

    Thanks

    SiLi

  • 0 in reply to si li1
    TI__Mastermind 24960 points

    SiLi,

    I am glad to hear this worked out for you. Thank you for sharing your findings.