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UDi T.1
Visitor II
December 9, 2021
Question

Reading distances with VL6180X on the workflow of one shot measurement "Wait for range measurement to complete" SYSTEM__INTERRUPT_CONFIG_GPIO it don't comes set never. what can be the reason?

  • December 9, 2021
  • 1 reply
  • 638 views

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1 reply

John E KVAM
ST Employee
December 15, 2021

The 6180X is kind of robust but the most common issues are:

  • Poor power.
  • noise on the GPIO0 (Shutdown line) - this puts the sensor into reset and makes mess - a good sized pull-up is recommended.
  • -miss-configured I2C. This is easy to do. Always check the status on all your calls. An i2C failure will show up as a timeout.

But do look at the chip, if it's running you will see the laser - unless you are a bit old. Then use a laptop camera to view the laser.

Good luck,

  • john