HMC5883L Bug or me!

[jgu1]

Hi!

I figth with this module an not managed to get it work. Tryed almost everything, but not working. After initialyilse, I see 28929 in the display and it stop.

Have anyone experience with this module or can tell med if I do something wrong, please Also not working in FC9.

Thank´s i advance

Jorgen

[medelec35]

Hi Jorgen
First of can you set your flowchart up so the display shows the value of X also for Initialise and UpdateCompassData
Show them on different rows to make it easier to know what all the values are for.
You could use a string preceding as well.
Rather than using clear, can you just use several spaces after the values to clear unwanted digits.
E.g.
PrintString "UCD = "
PrintNumber X
PrintString " "

I can see a issue with the code.
Initialisation value of 1E for the 7bit address looks correct since when in write mode it will be 3C etc.

Do you have a logic analyser you can connect to I2C data and lock signals?
At this stage for the compass keep to different pins in software mode than the LCD

[jgu1]

Hi Martin!

Thanks´for fast reply.

I will try to make a better program.

" First of can you set your flowchart up so the display shows the value of X also for Initialise and UpdateCompassData" do you mean in display?

Do you also mean that I also have to convert to String, and then use the " " to delete the previous data?

Yes I have an analyzer, and I will make a test and attach and I am aware of the display, i will allocate another pin for this when test.

I am not home at the moment, maybe 2-3 days and I test You hear.

Br Jorgen

[jgu1]

Hi Martin!

"Bug or me"? Me

I startup with a new testprogram as you advice, strugling and figth and will sent you data from logic analyzer to you. The last ting I tryed, supply the device to 3,3V, and then data is comming data in the display. Nice so it work.

But one thing, I guess that "use data pin is when the device is finish update data it give a signal out? I can enable and disable it, bur if I in config set it for yes, no data come out and if I use no, the the triggersignal is comming. Okay, the other way around is a trifle.

If someone like to test, I use the device on the picture, on the backside is label GY-273, the GY-271 will not work.

Again thank´s for your help.

Br Jorgen

[medelec35]

hi Jorgen.
For the board that's not working have you tried using the I2C scanner on it?
If so, what address is displayed?

[jgu1]

Hi again!

Of course your great tool

The GY-273 first (which now vorking have adress: 0x0D

The GY-271 have another adress: 0x1E

So I guess this is the issue, but can´t see in proporties where to change it, maybe you could update so it is possible to choose in proporties?

Jorgen

[medelec35]

I have looked at the component and 0D is used.
I have added an address property if you want to try it out.

If you do, browse to this location using file explorer , it's hidden by default so just paste the link into your address bar.

Code: Select all

%ProgramData%\MatrixTSL\FlowcodeV10\Components

Place the attached components.
If Flowcode is already open, then you will need to reload your project for the new component to work
If you run any component updates, then the component you added will be overwritten, so it will stop working again (unless the component update has been pushed).

Can you let me know how you get on please.

[medelec35]

I have just modified the component so you can select either QMC5883L or HMC5883L
People might find it less confusing than just leaving the user to work out and enter correct address.

[jgu1]

Agree
The HMC5883L does not work!

[medelec35]

OK thanks for letting me know.
Did you want to try with the first file and enter correct address.
We can take it from there.