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VL6180X Sensor, device register memory volatility

dere1
Associate

Hi there,

I was wondering if the memory used to save the values in the device registers for the VL6180X sensor are volatile or non-volatile. This would affect how the sensors behaves during a power cycle. Could someone clarify this for me if possible?

Thanks in advance.

1 ACCEPTED SOLUTION

Accepted Solutions
John E KVAM
ST Employee

You are correct. There is no volatile memory. At reboot, one loses the I2C address - if it was changed and one loses the calibration information. Restore that and you are good to go.

- john


In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question. It helps the next guy.

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3 REPLIES 3
Andrew Neil
Evangelist III

The documentation would say what (if any) configuration is non-volatile.

If it's not mentioned, then assume it isn't.

Hi Andrew,

Thanks for the quick reply, 
After a thorough look through the VL6180X datasheet I don't believe it mentions anything about the memory being non-volatile. I'll assume the device registers values are volatile.

John E KVAM
ST Employee

You are correct. There is no volatile memory. At reboot, one loses the I2C address - if it was changed and one loses the calibration information. Restore that and you are good to go.

- john


In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question. It helps the next guy.