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yjun.1
yjun.1
Associate
July 15, 2022
Question

VL6180 always don't have valid data to report.Read reg 0x4f the data is 0x00.

  • July 15, 2022
  • 2 replies
  • 758 views

Read reg 0x4f the data is 0x00,means No threshold events reported.and read reg 0x4d the high 4bit data is 0x0F,means Ranging Algo Overflow.But I don't know why this happens,and how to solve it.

Could anyone please help me?​Thanks!

This topic has been closed for replies.

2 replies

Anne BIGOT
Anne BIGOT
Technical Moderator
August 10, 2022

Hello,

There could be two reasons :

  • The sensor doesn't appear to be running.
  • The ranging is not finished. You read the registers too soon. You have to wait until the range is done.

Regards

Anne

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Tesla DeLorean
Tesla DeLorean
Guru
August 10, 2022

Likely going to have to provided significantly more contextual details for any hope of debugging/diagnosing such problems.

Perhaps use logic analyzer, trigger on failure cases, output diagnostics and telemetry from your code.

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