(CLOSED) Proximity Sensor: VL53L1X

Plan

Arduino implementation (https://github.com/pololu/vl53l1x-arduino) is known to work - colleagues are using it. Port it to Linux, following Linux And I2C.

Status

• 2024-11-05: ongoing. Reading sensor data yields an all-zeroes block (?).

• 2024-11-25. stops working at setcontinuous, which is the first 32bit write.

  • try lowering i2c frequency. what does original arduino implementation use?

  • check with a scope (comparing arduino and pi)

Notes

• Breakout board: https://shop.pimoroni.com/products/vl53l1x-breakout

• Data sheet: https://www.st.com/en/imaging-and-photonics-solutions/vl53l1x.html

• There is a Linux implementation, https://github.com/mjbogusz/vl53l1x-linux, but lets not use that (it handles the address change operation in a way that we don’t want).

• The device emits interrupts ⟶ how could we make use of them?

• Linux kernel driver exists for VL53L0X https://github.com/torvalds/linux/blob/master/drivers/iio/proximity/vl53l0x-i2c.c

  User space access for that driver yet unclear, research needed