3

Functional description

3.1

System functional description

Figure 4. VL53L4ED system functional description shows the system level functional description.

The host customer application controls the VL53L4ED device using an ultra lite driver (ULD). The ULD contains a

set of high level functions that allow control of the VL53L4ED firmware. Tasks such as initialization, start/stop

ranging, and setting the system accuracy can be controlled.

The driver is a turnkey solution. It consists of a set of “C” functions that enable fast development of end-user

applications. This helps to avoid complications with direct multiple register access. The driver is structured so that

it can be compiled on any kind of platform. However, STMicroelectronics advise a good abstracted platform layer.

The driver package allows the user to take full advantage of the VL53L4ED capabilities.

The firmware fully manages the hardware registers access.

Section 3.2: State machine description details the firmware state machine.

Figure 4. VL53L4ED system functional description

VL53L4ED

Functional description

DS14256 - Rev 3

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