Mike Wirth

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6 years, 4 months ago.

Differences between L475VG-IOT01(A) and (Bx) versions? ToF demo app?

Attended an ST Micro developer session a couple years ago and walked away with a B-L475E-IOT01Bx (MB1297 rev B) board. Dug it out today, because I want to evaluate the ToF (Time of Flight) sensor, but couldn't find any docs or support material for it on the ST Micro website.

But it does appear to be nearly identical to the B-L475E-IOT01A board for which there is a lot of material and this mbed port. Tried a simple Blinky app; works fine. So far, so good.

But have a couple questions:

1. What are the differences between these two board versions? Is the A rev newer than the Bx? (Strange if it is.)

2. Didn't see a ToF sensor demo in the mbed sample apps for this platform. Is there one? A non-mbed ToF demo?

TIA,

Mike

Question relating to:

Last updated: 20 Apr 2021
STM32L4 Discovery kit IoT node, low-power wireless, BLE, NFC, SubGHz, Wi-Fi

2 Answers

bco stm
6 years, 4 months ago.

Hi,

1) Board versions are described in User Manual Table 12.

Note 1: The 'A' in 'B-L475E-IOT01A' is not the board revision. The board revision is marked after 'MB1297': MB1297 rev B or MB1297C or MB1297D

Note 2: Revisions A and B are engineering samples. Today's latest revision is D (MB1297D). I have added the links to the different board's schematics on the platform page.

2) There is a ToF sensor exemple here:

https://os.mbed.com/teams/ST/code/HelloWorld_ST_Sensors/?platform=ST-Discovery-L475E-IOT01A

Best regards

Thanks for the quick reply!

posted by Mike Wirth 01 Dec 2017
Devin B
6 years, 4 months ago.

I don't believe there is a B-L475E-IOT01B version of this board, just A. I also wanted to point out the difference between the B-L475E-IOT01A1 and B-L475E-IOT01A2: The A1 has a 915 MHz Sub-GHz radio, while the A2 has the 868 MHz radio.