SD card driver for Arduino SdFat V1.3.0. - anybody??

[boda-akos]

Hello, I am trying hard to have access to SD card using the Arduino Sparkfun SD Library V1.3.0 . Sure there are error messages, board definition not found. I think the solution would be the Sd2PinMap.H file if I (or even better, someone cleverer than I am) could enter the CH32V003 CH32V006 hardware parameters in the file so it will be "found" when compiling. Anybody there with a 5 minute dirty solution ? Thanks.

Background : there is a good, working NFC application I wrote years ago, running on STM32, it would be nice to run it on CH32V006 too.

[maxint-rd]

Haven't tried such a thing yet, so no 5-minute solution from me.

Are you sure about using SdFat library version 1.3.0? I don't see such release here nor here. I also can't a Sd2PinMap.H file in that library.

Are you perhaps using this SD library referenced here? That one is at version 1.3.0
(I mention the links here as others may need to follow them to help you.)

Did you get it working on STM32 without any changes? I don't see any STM32 mentioned in that Sd2PinMap.h file.

[boda-akos]

Hello, Thanks for your writing.Wait a second, I replaced the name and the SPI pins of a MCU what I will never use in the .H file. the code compiles now, I will wire it up tonight and see if it works.  Sure it is 1.3.0.  Greetings On Friday, December 19, 2025 at 03:16:38 PM GMT+1, Maxint R&D ***@***.***> wrote: maxint-rd left a comment (openwch/arduino_core_ch32#234) Haven't tried such a thing yet, so no 5-minute solution from me. Are you sure about using SdFat library version 1.3.0? I don't see such release here nor here. I also can't a Sd2PinMap.H file in that library. Are you perhaps using this SD library referenced here? That one is at version 1.3.0 (I mention the links here as others may need to follow them to help you.) Did you get it working on STM32 without any changes? I don't see any STM32 mentioned in that Sd2PinMap.h file. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[boda-akos]

https://github.com/boda-akos?tab=repositories  These work already. Sorry I can't write a library, but I have hardware roots and I am happy if the project works somehow... On Friday, December 19, 2025 at 04:46:40 PM GMT+1, Akos Boda ***@***.***> wrote: Hello, Thanks for your writing.Wait a second, I replaced the name and the SPI pins of a MCU what I will never use in the .H file. the code compiles now, I will wire it up tonight and see if it works.  Sure it is 1.3.0.  Greetings On Friday, December 19, 2025 at 03:16:38 PM GMT+1, Maxint R&D ***@***.***> wrote: maxint-rd left a comment (openwch/arduino_core_ch32#234) Haven't tried such a thing yet, so no 5-minute solution from me. Are you sure about using SdFat library version 1.3.0? I don't see such release here nor here. I also can't a Sd2PinMap.H file in that library. Are you perhaps using this SD library referenced here? That one is at version 1.3.0 (I mention the links here as others may need to follow them to help you.) Did you get it working on STM32 without any changes? I don't see any STM32 mentioned in that Sd2PinMap.h file. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[boda-akos]

Hello, The library is the Arduino / Sparkfun V 1.3.0 SD library This is the change #if defined(CH32V00x) || defined(CH32VM00X) #ifndef Sd2PinMap_h  #define Sd2PinMap_h   #include <Arduino.h> // Two Wire (aka I2C) ports uint8_t const SDA_PIN = PC1; uint8_t const SCL_PIN = PC2; // SPI port  uint8_t const SS_PIN = PC4;  uint8_t const MOSI_PIN = PC6;  uint8_t const MISO_PIN = PC7;  uint8_t const SCK_PIN = PC5; #endif // Sd2PinMap_h Seems to work. You might need the CH32V006 because the 003 run out of space when compiling the usual Arduino SD examples. [Sd2PinMap.zip](https://github.com/user-attachments/files/24263818/Sd2PinMap.zip) Perhaps somebody comes up with a professional  library. Until then, here is attached the zip of the SD library, copy the files here, link     C:\Users\1....\AppData\Local\Arduino15\libraries\SD\src\utility You are right, there is no STM32 definition in the file , I don't understand it either , but never wanted to go so deep into software background... perhaps someone can explain.

…

---------------------------------------------------- On Friday, December 19, 2025 at 05:11:53 PM GMT+1, Akos Boda ***@***.***> wrote: https://github.com/boda-akos?tab=repositories  These work already. Sorry I can't write a pro library, but I have hardware basics and I am happy if the project works somehow... On Friday, December 19, 2025 at 04:46:40 PM GMT+1, Akos Boda ***@***.***> wrote: Hello, Thanks for your writing.Wait a second, I replaced the name and the SPI pins of a MCU what I will never use in the .H file. the code compiles now, I will wire it up tonight and see if it works.  Sure it is 1.3.0.  Greetings On Friday, December 19, 2025 at 03:16:38 PM GMT+1, Maxint R&D ***@***.***> wrote: maxint-rd left a comment (openwch/arduino_core_ch32#234) Haven't tried such a thing yet, so no 5-minute solution from me. Are you sure about using SdFat library version 1.3.0? I don't see such release here nor here. I also can't a Sd2PinMap.H file in that library. Are you perhaps using this SD library referenced here? That one is at version 1.3.0 (I mention the links here as others may need to follow them to help you.) Did you get it working on STM32 without any changes? I don't see any STM32 mentioned in that Sd2PinMap.h file. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>

[maxint-rd]

Excellent. Congratulations with your success!

One question: How much room does it need? If it's only a small bit too large for the V003, you may want to try compiling it with LTO. Good to know it fits in the V006. I really like that chip as a pin-compatible replacement for V003 whenever more flash is needed.

BTW. I found your WS2812 binary clock very nice. I like the way it looks as well as the work you did to make it work with the V003. The explanations on how to use the various components are very helpful. Well done! (Hopefully I get some spare time in the next year to build one too).

[boda-akos]

Thank you very much!

Test results using the SD library with CH32V003 , only card.init(SPI_HALF_SPEED, chipSelect); , no Serial.print, nothing else.

Compiled w/o LTO 80% Flash used
Option LTO 01 68%
Option LTO 02 57%

https://github.com/boda-akos/SD-Card-CH32V006-Arduino