VL53L1X and VL53L4CD detection

[will3]

We are beginning to migrate from the L1 to the L4. 

Wondering if there is a way to auto-detect which sensor is on the board? I would like to build one fw version which abstracts away which sensor is in use (albeit taking advantage of diff features) but all I see is SWVersion API which only returns version not type.  Both appear to be same address on I2C for us.

Thanks,

Will

[John E KVAM · Accepted solution]

Both those chips should have a model ID at the same location

#define VL53L4CD_IDENTIFICATION__MODEL_ID                            0x010F

and

#define VL53L1_IDENTIFICATION__MODEL_ID                     0x010F

VL53L1X_ERROR VL53L1X_GetSensorId(VL53L1_Dev_t dev, uint16_t *sensorId)
{
	VL53L1X_ERROR status = 0;
	uint16_t tmp = 0;

	status = VL53L1_RdWord(&dev, VL53L1_IDENTIFICATION__MODEL_ID, &tmp);
	*sensorId = tmp;
	return status;
}

I can't remember which one is which, but it should be easy enough to test. 

- john

[will3]

Perfect! Thank you!