TMP112: TMP112 The temperature register can not get The low 8 bits value

JIANGTAO BAI

Part Number: TMP112

TMP112 The temperature register is 8 bits lower and 8 bits higher.Now,I read the low 8 bits value is always 0x00,The high 8 bits is right.

0 Brandon Fisher94 over 4 years ago

Hi Jiangtao,

Can you share an oscilloscope capture of your I2C read waveform?

I would start here to see if the device is properly delivering an ACK after the first byte is read.

Best Regards,
Brandon Fisher

0 Brandon Fisher94 over 4 years ago in reply to Brandon Fisher94

Hi Jiangtao,

Were you able to resolve this issue?

Best Regards,
Brandon Fisher

0 JIANGTAO BAI over 4 years ago in reply to Brandon Fisher94

Hi Brandon Fisher94

I have solved this problem.When I read the first byte,I gave an ACK sigal,but I not release the SDA,so I read the second byte value is always 0x00.

Thank you

0 Brandon Fisher94 over 4 years ago in reply to JIANGTAO BAI

Thank you Jiangtao! I'm glad you figured it out and it's always good to know the resolution to problems like these.

I'll go ahead and mark this thread as closed.

Best Regards,
Brandon Fisher

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