None of the Arduino SD examples compile on V2.0.1

[idea--list]

Hi there!

I paired up Artemis Thing Plus board with an uSD-slot from Polulu as it has 11 pins (needed those to play around with 4-bit SDIO).

• Using Apollo3 core V1.1.2 i can compile all the SD examples, but neither of my cards get recognized
• Using Apollo3 core V2.0.1 the examples do not even compile

I hooked up the SD-slot like that:

microSD	Artemis Thing Plus
SCK	SCK (Pin 11)
DI	MOSI (Pin 12)
DO	MISO (Pin 13)
CS	Pin 4
VCC	3V3
GND	GND

I just wonder if i might have damaged the slot during soldering, or just the wires might be too long as the very same slot works when connected to my Lolin D32 board (ESP32 has an SDIO interface enabling 4-pin communication). With that board i can read/write an old 1GB Transcend card using SD_MMC.h (both SDIO 1 and 4-pin modes work), also i can access the card using 1-bit SPI interface (however a newer SanDisk Extreme 32GB card just will not be recognized by the Lolin board in the very same setup, not even in SPI-mode).

EDIT: It turns out using a breadboard and male-male pins is not a good idea to connect an sd-slot. After connecting the board directly to the slot by female-female wires, the examples compiled with arduino core V1.1.2 run fine.
However with Arduino core 2.0.1 i still get this error during compilation:

Arduino: 1.8.12 (Windows 10), Board: "Artemis Thing Plus, 921600, Ambiq Secure Bootloader (Recommended)"
In file included from C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2Card.h:22,
                 from C:\Program Files (x86)\Arduino\libraries\SD\src/utility/SdFat.h:29,
                 from C:\Program Files (x86)\Arduino\libraries\SD\src/SD.h:20,
                 from C:\Program Files (x86)\Arduino\libraries\SD\examples\CardInfo\CardInfo.ino:24:
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2PinMap.h:23:26: error: 'SS' was not declared in this scope
   uint8_t const SS_PIN = SS;
                          ^~
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2PinMap.h:24:28: error: 'MOSI' was not declared in this scope
   uint8_t const MOSI_PIN = MOSI;
                            ^~~~
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2PinMap.h:24:28: note: suggested alternative: 'M_PI'
   uint8_t const MOSI_PIN = MOSI;
                            ^~~~
                            M_PI
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2PinMap.h:25:28: error: 'MISO' was not declared in this scope
   uint8_t const MISO_PIN = MISO;
                            ^~~~
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2PinMap.h:25:28: note: suggested alternative: 'EIO'
   uint8_t const MISO_PIN = MISO;
                            ^~~~
                            EIO
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2PinMap.h:26:27: error: 'SCK' was not declared in this scope
   uint8_t const SCK_PIN = SCK;
                           ^~~
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2PinMap.h:26:27: note: suggested alternative: 'SCB'
   uint8_t const SCK_PIN = SCK;
                           ^~~
                           SCB
In file included from C:\Program Files (x86)\Arduino\libraries\SD\src/utility/SdFat.h:29,
                 from C:\Program Files (x86)\Arduino\libraries\SD\src/SD.h:20,
                 from C:\Program Files (x86)\Arduino\libraries\SD\examples\CardInfo\CardInfo.ino:24:
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2Card.h:64:41: error: 'SS' was not declared in this scope
     uint8_t const  SD_CHIP_SELECT_PIN = SS;
                                         ^~
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2Card.h:73:35: error: 'MOSI' was not declared in this scope
     uint8_t const  SPI_MOSI_PIN = MOSI;
                                   ^~~~
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2Card.h:73:35: note: suggested alternative: 'M_PI'
     uint8_t const  SPI_MOSI_PIN = MOSI;
                                   ^~~~
                                   M_PI
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2Card.h:75:35: error: 'MISO' was not declared in this scope
     uint8_t const  SPI_MISO_PIN = MISO;
                                   ^~~~
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2Card.h:75:35: note: suggested alternative: 'EIO'
     uint8_t const  SPI_MISO_PIN = MISO;
                                   ^~~~
                                   EIO
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2Card.h:77:34: error: 'SCK' was not declared in this scope
     uint8_t const  SPI_SCK_PIN = SCK;
                                  ^~~
C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2Card.h:77:34: note: suggested alternative: 'SCB'
     uint8_t const  SPI_SCK_PIN = SCK;
                                  ^~~
                                  SCB
exit status 1
Error compiling for board Artemis Thing Plus.

[oclyke]

Thanks @idea--list

we won't be able to get to this issue right away, but we will move it up in priority. SparkFun has decided to move beyond the traditional SPI signal names so that is part of the issue (MOSI, MISO, SCLK replaced by the likes of SDO, SDI, CLK) and the other part may have to do with the library's default SD transport layer. Does it use GPIO or SPI APIs? I would have to look in more detail (because we usually use 3rd party SD libs like SdFat) later to identify the proper solution.

If you want to take a crack at it before then I would suggest:

• checking if the library can use the Arduino SPI API (SPI, beginTransaction, transfer, endTransaction, etc...) w/o using pin names directly
• if it cannot, and it uses GPIO access (pinMode, digitalWrite) then can you "alias" the old pin names to the new pin names? (check out the PinNames.h file for the boards you are interested in for some good mbed-recognized pin names)

[idea--list]

Thanks @oclyke for the response

Is there really anything wrong with the terms Master and Slave?
Yes, and it’s ok that you asked. These are terms that have centuries of history and violence packed into them. No human should be enslaved.

Holy cow! This can not be serious... i mean what do pin names do with humans?!
My answer: i really do not know. But hey let's just break compatibility with libraries that are not maintained on a daily level and even with code that someone might have written long ago.

For the sake of what, might i ask but there is simply no answer... Can not believe intelligent people making such a dumbass decision.

Anyway modified my variants.h file of the V2.0.1 core as you suggested, it contains now:
#define VARIANT_SPI_SDI SPI_SDI #define VARIANT_SPI_SDO SPI_SDO #define VARIANT_SPI_CLK SPI_CLK #define MISO SPI_SDI #define MOSI SPI_SDO #define SCK SPI_CLK

This way i get this error message during compilation:
Arduino: 1.8.12 (Windows 10), Board: "Artemis Thing Plus, 921600, Ambiq Secure Bootloader (Recommended)" In file included from C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2Card.h:22, from C:\Program Files (x86)\Arduino\libraries\SD\src/utility/SdFat.h:29, from C:\Program Files (x86)\Arduino\libraries\SD\src/SD.h:20, from C:\Program Files (x86)\Arduino\libraries\SD\examples\CardInfo\CardInfo.ino:24: C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2PinMap.h:23:26: error: 'SS' was not declared in this scope uint8_t const SS_PIN = SS; ^~ In file included from C:\Program Files (x86)\Arduino\libraries\SD\src/utility/SdFat.h:29, from C:\Program Files (x86)\Arduino\libraries\SD\src/SD.h:20, from C:\Program Files (x86)\Arduino\libraries\SD\examples\CardInfo\CardInfo.ino:24: C:\Program Files (x86)\Arduino\libraries\SD\src/utility/Sd2Card.h:64:41: error: 'SS' was not declared in this scope uint8_t const SD_CHIP_SELECT_PIN = SS; ^~ exit status 1 Error compiling for board Artemis Thing Plus. This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.

So next i also added #define SS 4 to variants.h. After doing so get this message:
C:\Program Files (x86)\Arduino\libraries\SD\src\File.cpp: In constructor 'SDLib::File::File(SdFile, const char*)': C:\Program Files (x86)\Arduino\libraries\SD\src\File.cpp:25:37: warning: 'void* memcpy(void*, const void*, size_t)' writing to an object of type 'class SdFile' with no trivial copy-assignment; use copy-assignment or copy-initialization instead [-Wclass-memaccess] memcpy(_file, &f, sizeof(SdFile)); ^ In file included from C:\Program Files (x86)\Arduino\libraries\SD\src/SD.h:20, from C:\Program Files (x86)\Arduino\libraries\SD\src\File.cpp:15: C:\Program Files (x86)\Arduino\libraries\SD\src/utility/SdFat.h:151:7: note: 'class SdFile' declared here class SdFile : public Print { ^~~~~~ C:\Users\Peter\AppData\Local\Arduino15\packages\SparkFun\hardware\apollo3\2.0.1\cores\arduino\mbed-bridge\core-implement\HardwareSerial.cpp: In member function 'int UART::printf(const char*, ...)': C:\Users\Peter\AppData\Local\Arduino15\packages\SparkFun\hardware\apollo3\2.0.1\cores\arduino\mbed-bridge\core-implement\HardwareSerial.cpp:153:19: warning: variable length array 'buf' is used [-Wvla] char buf[space];

The Arduino logic is not for me... i opt out digging deeper myself

[oclyke]

@idea--list the output you show after your modifications are just warnings. I've created a branch with this patch as a temporary solution.

[idea--list]

@oclyke
Thank you very much for the patch and clarification that the last ones were only warnings! Now the SD library works.
You can clearly see i am not an Arduino fanboy, i just spend as few time with it as i must to in order to be able to avoid using it... i mean if i find an arduino library, then i try to port it to mbed.