Search found 16 matches

by STM32
Fri Apr 21, 2017 8:11 pm
Forum: Libraries & Hardware
Topic: Hints about the MMC/SD card library by Roland Riegel
Replies: 34
Views: 590

Re: Hints about the MMC/SD card library by Roland Riegel

Hi Stevestrong, Thanks. stevestrong wrote: Try some other of the sdfat examples just to confirm, but the examples have been used extensively so they should be ok. Some SD card do not work as good in the spi mode, you may want to try different cards and different speeds. I did the initial port of the...
by STM32
Thu Apr 20, 2017 8:50 pm
Forum: Libraries & Hardware
Topic: Hints about the MMC/SD card library by Roland Riegel
Replies: 34
Views: 590

Re: Hints about the MMC/SD card library by Roland Riegel

Hi Stevestrong, Thanks. stevestrong wrote: Try a simple blinky sketch with simple serial output in loop, without including SD card header. I did it using Test_RTClock without problem. stevestrong wrote: Check the 3.3V voltage level, the on-board regulator is week. I used an MSO oscilloscope and all ...
by STM32
Thu Apr 20, 2017 8:03 pm
Forum: Libraries & Hardware
Topic: Hints about the MMC/SD card library by Roland Riegel
Replies: 34
Views: 590

Re: Hints about the MMC/SD card library by Roland Riegel

Hi guys, I'm still looking for a solution in order to change SdFat library to allow for MMC cards. Until now I was unable to do the job because recent release is pretty different from the old so the trick I used in the past doesn't work anymore, honestly not even the same trick with the oldest relea...
by STM32
Thu Apr 06, 2017 8:00 pm
Forum: Libraries & Hardware
Topic: Hints about the MMC/SD card library by Roland Riegel
Replies: 34
Views: 590

Re: Hints about the MMC/SD card library by Roland Riegel

Hi Victor_pv, the SD shield that I'm using with "Blue Pill" consists only by the connector, there isn't any other hardware, it is 3,3V only. For Arduino I use a different one which has level converter because my Arduino is one of the 5V series. The weird thing isn't that I can access the c...
by STM32
Wed Apr 05, 2017 8:37 pm
Forum: Libraries & Hardware
Topic: Hints about the MMC/SD card library by Roland Riegel
Replies: 34
Views: 590

Re: Hints about the MMC/SD card library by Roland Riegel

Hi @Victor_pv, as I wrote the SdFat library that I'm using is the version 20131225. Nowadays I'm not able to retrieve it from the repository, and it is to big to be attached here. I know it's very old so I have downloaded the more recent SdFat version 20160719 that I'll try to modify in order to all...
by STM32
Sun Apr 02, 2017 3:55 pm
Forum: Libraries & Hardware
Topic: Hints about the MMC/SD card library by Roland Riegel
Replies: 34
Views: 590

Re: Hints about the MMC/SD card library by Roland Riegel

Hi Stevestrong, thanks a lot for the useful hints. As you and others have made me realize I'm still too newbie to work on the porting so I'll try in the future. Actually porting wasn't in my intention, I had just needed something capable to handle the MMC cards. Following your indications I'm now wo...
by STM32
Sun Apr 02, 2017 3:53 pm
Forum: Libraries & Hardware
Topic: Hints about the MMC/SD card library by Roland Riegel
Replies: 34
Views: 590

Re: Hints about the MMC/SD card library by Roland Riegel

Hi Victor_pv, thank you very much for your hint. I'm not gone, I only need time in order to find the solution. I tried your suggestion, I have put the Sd Spi STM32F1.cpp inside the same folder of the modified version of the SdFat that I made but the thing doesn't work: File included from C:\Arduino\...
by STM32
Fri Mar 31, 2017 9:33 pm
Forum: Libraries & Hardware
Topic: Hints about the MMC/SD card library by Roland Riegel
Replies: 34
Views: 590

Re: Hints about the MMC/SD card library by Roland Riegel

Hi Martinayotte, I agree about the SdFat library. The fact is that the device on which I need to do servicing doesn't allow for SD but only for MMC and MMC+. Actually it's enough for me to retrieve CSD, CID and few other register's content in order to understand if all it is fine, not do some compli...
by STM32
Fri Mar 31, 2017 9:32 pm
Forum: Libraries & Hardware
Topic: Hints about the MMC/SD card library by Roland Riegel
Replies: 34
Views: 590

Re: Hints about the MMC/SD card library by Roland Riegel

Hi Zoomx,
for the little that I know it should be something related with the initialization of the cards.
Indeed the changes I'm making in the libraries are about the initialization.
I know that it's a crude way but it works, or at least it worked on Arduino.
Thanks.

STM32
by STM32
Fri Mar 31, 2017 9:31 pm
Forum: Libraries & Hardware
Topic: Hints about the MMC/SD card library by Roland Riegel
Replies: 34
Views: 590

Re: Hints about the MMC/SD card library by Roland Riegel

Hi Stevestrong, I fully agree with you. But wait a minute, actually I didn't ask to anybody to do anything. I only asked about the syntax that I wrote because it is weird at my eyes and by thinking it could be related with the possibility to reach my purpose. You and other guys have pointed at me yo...

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