SIMPLE RANGE MEASUREMENT WITH VL6180 AND STM32WB55

[NASOK.1]

I'M JUST TRYING TO MEASURE DISTANCE USING VL6180X SENSOR WITH STM32 BUT I COULDN'T SUCCEED.CHECKED THE I2C DEV ADDRESS(0X29),VL6180 SENSOR ID(0XB4).AND JUST USING A FEW FUNCTIONS FROM API LIKE INIT, PREPARE, AND POLL MEASUREMENT. I CANN'T IDENTIFY WHERE THE PROBLEM IS. NEED HELP

[John E KVAM]

there are only a few ways to get this wrong.

1) you didn't power it on.

2) you did not power up pin 4 - GPIO0/CE Digital I/O Power-up default is chip enable(CE). It should be pulled high with a 47 ohm resistor.

3) I2C address confusion. 0x29 is the base address. That makes the write address 0x52 (0x29<<1) and the read address 0x53 (0x29<<1 | 1).

(this last is a product of the I2C specification, and I cannot do anything about that.)

Oddly I just brought up a new board with a VL53 sensor on it, and even I got the CE pin wrong to start with. Check that first.

• john

[NASOK.1]

I enabled the gpio0(CE) high and checked my I2C address as you said, problem with that.

[MHaro.1]

Hello all,
im using same setup but with vl6180-satel and im not sure if i need 4.7k ohm resistors on SDA and SCL lines. And how did you enabled GPIO0 ? with output from WB55 digital pin ? 

Thank you so much.