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How to configure and access histogram data in VL53L1
HI,
Could somebody tell me how to configure and access VL53L1 histogram data in detail.
Thank you
John E KVAMBest answer
ST Employee
August 22, 2024
It's easy - buy and use the VL53L1CB. There is a VL53L1CX which is the same chip (almost) but it does not use histograms.
So just do a range with the VL453L1CB and get the result. Under the covers, the histogram is read from the sensor and the answer is obtained.
There is a call - something like GetAdditionalData() that is in the API
VL53L1_Error VL53L1_GetAdditionalData(VL53L1_DEV Dev,
VL53L1_AdditionalData_t *pAdditionalData)
it calls (in the core.c)
status = VL53L1_get_histogram_bin_data(
Dev,
&(pdev->hist_data));
The trick is to know that during the A range you will get 24 historam bins, During the B range you get 4 ambient light levels and 20 bin values. Or maybe its the other way around. I always forget.
But it's obvious.
Good luck,
- john
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