ESP32 with BH1750!

[jgu1]

Hi!
First happy Newyear to all!

I am trying to connect a BH1750 ligth sensor to he BH1750 but when I compile I get an error 01? As soon I remove the BH1750 component I can compile.
I see in the Properties that there are two serieal channel, but no pin are shown. I change to "software" and are then able to choose pin for SDA and SCL, no matter which pin I choose, it wont work, error 01, any idea please?

Br Jorgen

[chipfryer27]

Hi Jorgen

Happy New Year to you.

I've had good results with that sensor using a PIC, but I've not tried yet with any ESP.

I see though that the component doesn't automatically populate SDA/SCL pins, you need to select them as appropriate depending on channel. Are they correct for your channel?

I'll connect a sensor to an ESP when I get a chance and see what I get.

Regards

[medelec35]

Hi Jorgen.
Happy new year to you and everyone else on the forums.
I have tried BH1750 with ESP32_DEVKITV1 target and it compiles for me with Channel1 for the sensor selected.

BH1750 ESP32_DEVKITV1.png (141.68 KiB) Viewed 2436 times

Are all your components up-to-date?
If they are not and you do a full database update, don't forget to reload your project after.
In addition to chipfryer27 post, you will need to select the pins from SDA & SCL Remap pins.
When you first add the component it should state unconnected for both SDA & SCL pins.
You just select the pin from the Remap pin below, which will be blank for an unconnected pin.

Can you run ESP-IDF Command Prompt, which can be found on your desktop?
Alternatively, press your windows key and scroll down to ESP-IDF, select it, and you should see the ESP-IDF Command Prompt.
Type

Code: Select all

idf.py --version

then the enter key
Then paste the reported version.

[chipfryer27]

Hi

Just a quick follow up. I did use the component with an ESP and a I2C display. I only have a deleted photo so I'm guessing I was just testing code. However it did work as expected.

Incidentally, when I add the component, the SDA and SCL pins default to Port B4 including both remaps, so you will probably need to set yours to something suitable.

Capture.JPG (35.43 KiB) Viewed 2428 times

Regards

[jgu1]

Hi Martin & Chipfreyer!

Thank´s for fast reply. Well my fault (of course) sorry Of course I know *I have to go to the rigth side of the proporties panel and scroll down and choose the alternative pin number, forgot that, notice that when I saw your att. picture.

Now no problem with compiling and it work perfect.

By the way Martin, do you know when release of FC10 is it almost on the"corner"?

Br Jorgen

[chipfryer27]

Hi

Glad to hear it's working for you, it's a great little sensor.

So easy to overlook the simplest of things. Guess who reversed I2C pins yesterday and spent ages trying to figure out why things didn't work before resorting to the "sniffer"....?

Regards

[jgu1]

Hi Chipfreyer!

Yes, "So easy to overlook the simplest of things" Believe me, I have tryed this many times, but never give up, that´s how we learn best

And yes this BH1750 is a very reliable tiny component.

Do you know when FC10 will be released?

Again thank´s to you both.

Jorgen

[Steve-Matrix]

Do you know when FC10 will be released?

It is quite close now. We will post some more details in the coming weeks.

[jgu1]

Thank you Steve, look forward to hear.

Jorgen