Matrix user forums

Sorry for late repply but matrix website apparently had some issues and the my post has been deleted... So, I tried two different cards with the exact same settings as you but It still won't write anything... my cards are : - Canon MMC-8M (that's an old card) - Transcend MMC plus of 1GB The first on...

I tried the file JohnCrow gave me and I didn't touch anything, but I still can't write anything on the card... I tried 2 different cards, it's all the same. I checked and re-checked that the cards are well formatted and indeed they are. Then I plugged an lcd screen to monitor the return value of ini...

Thanks a lot, I will try this monday !

I switched the jumper to "patch system" and connected everything correctly. Now, the PIC seems to be able to communicate with the card but I still cannot write anything on the card. I connected an LCD screen to monitor the return value of FAT component function (see .fcf attached). It keep...

The Hardware I'm using : - PIC 18F4450 - programming board EB006 - card reader EB037 - MMC card of 1Go, in FAT 16 format the EB037 is connected to the B port but I tried different ports and it doesn't change anything. I also tried to uncheck "software mode" in the advanced properties of th...

I'm passing my exam very soon and if I don't get to write that file on the card, I'm in trouble...
Could someone help please ?

Well, with your configuration the displays are working again, but only on port D.

Anyway, thanks a lot !

Hello, I upgraded to flowcode 5.5 but I still can't make my test program work. Now it compiles correctly but when I check on the computer if the file has been written, there is nothing on the card. I think the problem is that EB037 is connected to the wrong pin or something, because the PIC seems no...

It's very nice to have such a good support, you guys are always very reactive on this forum ! Thanks a lot for your quick answer. Unfortunatly I'm not able to test the config you sent me in attachment until friday. I will try it then and will tell you if it worked or not. If not, I will send you my ...

Hello, I had a PIC 16F887A and I recently upgraded my microchip to a 18F4450 and the LCD screens (EB005 and EB043) that I tested on the chip have some very strange behaviors : - sometimes it won't display anything (most of time) - sometimes it displays things but characters are messed up or missing ...

I'm using flowcode 5.0 and here is my flowcode file (see attachment)

I chose to try the PIC 18F4550 and to use the FAT component but I can't make it work... I wanted to test the card with a simple program that create a file (test.txt) and writes a "hello world" into that file (see attachment) but every time I get this error : Flowcode1.c(1171:6): error: unk...

Thanks a lot for your quick answer !
That's what I fought, The PIC is the problem.

Can you advise me a PIC that is compatible with the FAT component and EB006 board ?

Hello, I'm using a PIC 16F877A and I would like to manage to write some data on an MMC card and I would like that data to be readable easily from a computer. So I thought I'd just have to use the FAT component built-in flowcode because it seems a really easy way to do the job. But unfortunately, if ...

Hello everybody, I'm looking for a way to refresh a part of the display without erasing all with glcd_clear(). Because clear() is very very slow (like 2s) and I need to update data quickly... If I try to redraw data at the same position without clearing the screen, the characters get stacked one ove...