compilation error on example "STM32_spiflash_enc28j60"

[dleung18]

I have the exact hardware setup as in the example "STM32_spiflash_enc28j60". Arduino IDE Ver 1.8.1, MCU stm32f103c8. spi flash w25q64. All libraries are in place. I have also tried different library versions too. But I still get the same errors: see below:

D:\Arduino\libraries\SimpleFTPServer\FtpServer.cpp: In member function 'bool FtpServer::openFile(char*, int)':
D:\Arduino\libraries\SimpleFTPServer\FtpServer.cpp:2755:64: error: no match for 'operator=' (operand types are 'FsFile' and 'File32')
2755 | file = STORAGE_MANAGER.open( path, readTypeInt );
| ^
In file included from D:\Arduino\libraries\SdFat_-Adafruit_Fork\src/FsLib/FsLib.h:31,
from D:\Arduino\libraries\SdFat-Adafruit_Fork\src/SdFat.h:32,
from D:\Arduino\libraries\SimpleFTPServer/FtpServer.h:428,
from D:\Arduino\libraries\SimpleFTPServer\FtpServer.cpp:50:
D:\Arduino\libraries\SdFat-Adafruit_Fork\src/FsLib/FsFile.h:905:7: note: candidate: 'FsFile& FsFile::operator=(const FsFile&)'
905 | class FsFile : public StreamFile<FsBaseFile, uint64_t> {
| ^~~~~~
D:\Arduino\libraries\SdFat-Adafruit_Fork\src/FsLib/FsFile.h:905:7: note: no known conversion for argument 1 from 'File32' to 'const FsFile&'
D:\Arduino\libraries\SdFat-Adafruit_Fork\src/FsLib/FsFile.h:905:7: note: candidate: 'FsFile& FsFile::operator=(FsFile&&)'
D:\Arduino\libraries\SdFat-_Adafruit_Fork\src/FsLib/FsFile.h:905:7: note: no known conversion for argument 1 from 'File32' to 'FsFile&&'
exit status 1
Error compiling for board Generic STM32F1 series.

It seems like the open file function is not compatible with sdfat_adafruit_fork?
Any help is highly appreciated.

[xreef]

Hi,
I try to build the same example and I found a bug with file name and fix in 3.0.2 version in master github, but I can't find your problem

C:\Users\renzo\.platformio\penv\Scripts\pio.exe run -e stm32_spiff_enc Warning! src_filterconfiguration option in section [env:esp32doit-devkit-v1] is deprecated and will be removed in the next release! Please usebuild_src_filterinstead Warning!src_filterconfiguration option in section [env:esp32doit-devkit-v1-sdmmc] is deprecated and will be removed in the next release! Please usebuild_src_filterinstead Warning!src_filterconfiguration option in section [env:esp32doit-devkit-v1-sdfat2] is deprecated and will be removed in the next release! Please usebuild_src_filterinstead Warning!src_filterconfiguration option in section [env:esp32doit-devkit-v1-ffat] is deprecated and will be removed in the next release! Please usebuild_src_filterinstead Warning!src_filterconfiguration option in section [env:stm32_spiff_enc] is deprecated and will be removed in the next release! Please usebuild_src_filter` instead
Processing stm32_spiff_enc (platform: ststm32; board: genericSTM32F103C8; framework: arduino)

Verbose mode can be enabled via -v, --verbose option
CONFIGURATION: https://docs.platformio.org/page/boards/ststm32/genericSTM32F103C8.html
PLATFORM: ST STM32 (19.4.0) > STM32F103C8 (20k RAM. 64k Flash)
HARDWARE: STM32F103C8T6 72MHz, 20KB RAM, 64KB Flash
DEBUG: Current (blackmagic) External (blackmagic, cmsis-dap, jlink, stlink)
PACKAGES:

• framework-arduinoststm32 @ 4.21100.0 (2.11.0)
• framework-cmsis @ 2.50900.0 (5.9.0)
• toolchain-gccarmnoneeabi @ 1.120301.0 (12.3.1)
  LDF: Library Dependency Finder -> https://bit.ly/configure-pio-ldf
  LDF Modes: Finder ~ chain, Compatibility ~ soft
  Found 53 compatible libraries
  Scanning dependencies...
  Dependency Graph
  |-- SimpleFTPServer @ 3.0.2
  |-- SdFat - Adafruit Fork @ 2.3.102
  |-- Adafruit SPIFlash @ 5.1.1
  |-- EthernetENC @ 2.0.5
  Building in release mode
  Compiling .pio\build\stm32_spiff_enc\src\stm32spiffEnc\main.cpp.o
  Compiling .pio\build\stm32_spiff_enc\libfe6\SimpleFTPServer\FtpServer.cpp.o
  In file included from .pio\libdeps\stm32_spiff_enc\EthernetENC\src/Dhcp.h:7,
  from .pio\libdeps\stm32_spiff_enc\EthernetENC\src/Ethernet.h:29,
  from .pio\libdeps\stm32_spiff_enc\EthernetENC\src/EthernetEnc.h:1,
  from src\stm32spiffEnc\main.cpp:24:
  .pio\libdeps\stm32_spiff_enc\EthernetENC\src/EthernetUdp.h:45:11: warning: 'boolean' is deprecated [-Wdeprecated-declarations]
  45 | boolean send;
  | ^~~~
  In file included from C:\Users\renzo.platformio\packages\framework-arduinoststm32\cores\arduino/wiring.h:34,
  from C:\Users\renzo.platformio\packages\framework-arduinoststm32\cores\arduino/Arduino.h:36,
  from src\stm32spiffEnc\main.cpp:22:
  C:\Users\renzo.platformio\packages\framework-arduinoststm32\cores\arduino/wiring_constants.h:110:14: note: declared here
  110 | typedef bool boolean attribute((deprecated));
  | ^~~~~~~
  .pio\libdeps\stm32_spiff_enc\EthernetENC\src/Ethernet.h:132:31: warning: 'boolean' is deprecated [-Wdeprecated-declarations]
  132 | static boolean network_send();
  | ^
  C:\Users\renzo.platformio\packages\framework-arduinoststm32\cores\arduino/wiring_constants.h:110:14: note: declared here
  110 | typedef bool boolean attribute((deprecated));
  | ^~~~~~~
  In file included from .pio\libdeps\stm32_spiff_enc\EthernetENC\src/Dhcp.h:7,
  from .pio\libdeps\stm32_spiff_enc\EthernetENC\src/Ethernet.h:29,
  from E:\projects\Arduino\sloeber-workspace-lib\SimpleFTPServer/FtpServer.h:163,
  from E:\projects\Arduino\sloeber-workspace-lib\SimpleFTPServer\FtpServer.cpp:50:
  .pio\libdeps\stm32_spiff_enc\EthernetENC\src/EthernetUdp.h:45:11: warning: 'boolean' is deprecated [-Wdeprecated-declarations]
  45 | boolean send;
  | ^~~~
  In file included from C:\Users\renzo.platformio\packages\framework-arduinoststm32\cores\arduino/wiring.h:34,
  from C:\Users\renzo.platformio\packages\framework-arduinoststm32\cores\arduino/Arduino.h:36,
  from E:\projects\Arduino\sloeber-workspace-lib\SimpleFTPServer/FtpServer.h:26:
  C:\Users\renzo.platformio\packages\framework-arduinoststm32\cores\arduino/wiring_constants.h:110:14: note: declared here
  110 | typedef bool boolean attribute((deprecated));
  | ^~~~~~~
  .pio\libdeps\stm32_spiff_enc\EthernetENC\src/Ethernet.h:132:31: warning: 'boolean' is deprecated [-Wdeprecated-declarations]
  132 | static boolean network_send();
  | ^
  C:\Users\renzo.platformio\packages\framework-arduinoststm32\cores\arduino/wiring_constants.h:110:14: note: declared here
  110 | typedef bool boolean attribute((deprecated));
  | ^~~~~~~
  Archiving .pio\build\stm32_spiff_enc\libfe6\libSimpleFTPServer.a
  Linking .pio\build\stm32_spiff_enc\firmware.elf
  Checking size .pio\build\stm32_spiff_enc\firmware.elf
  Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
  RAM: [=== ] 26.6% (used 5448 bytes from 20480 bytes)
  Flash: [========= ] 87.8% (used 57532 bytes from 65536 bytes)
  Building .pio\build\stm32_spiff_enc\firmware.bin
  ========================= [SUCCESS] Took 13.04 seconds =========================

Environment Status Duration

---

stm32_spiff_enc SUCCESS 00:00:13.042
========================= 1 succeeded in 00:00:13.042 =========================`

Bye Renzo

[dleung18]

Hello, thanks for the follow up. I noticed your source name is stm32_spiff_enc not STM32_SPIFlash_enc28j60 source name in the example folder, so I'm not sure the content of the codes is the same. Anyway, I changed the development platform from Arduino IDE to PlatformIO in Vscode. Set everything matched to your setup. I would think it should be the exactly like your platform configuration. See my platformio.ini here:
[env:genericSTM32F103C8]
platform = ststm32
board = genericSTM32F103C8
framework = arduino
lib_deps =
jandrassy/EthernetENC@^2.0.5
xreef/SimpleFTPServer@^3.0.1
adafruit/Adafruit SPIFlash@^5.1.1
adafruit/SdFat - Adafruit Fork@^2.3.102

When I ran build, I got the same errors.

.pio\libdeps\genericSTM32F103C8\SimpleFTPServer\FtpServer.cpp: In member function 'bool FtpServer::openFile(char*, int)':
.pio\libdeps\genericSTM32F103C8\SimpleFTPServer\FtpServer.cpp:2742:64: error: no match for 'operator=' (operand types are 'FsFile' and 'File32')
2742 | file = STORAGE_MANAGER.open( path, readTypeInt );
| ^
In file included from .pio\libdeps\genericSTM32F103C8\SdFat - Adafruit Fork\src/FsLib/FsLib.h:30,
from .pio\libdeps\genericSTM32F103C8\SdFat - Adafruit Fork\src/SdFat.h:32,
from .pio\libdeps\genericSTM32F103C8\SimpleFTPServer/FtpServer.h:428:
.pio\libdeps\genericSTM32F103C8\SdFat - Adafruit Fork\src/FsLib/FsFile.h:916:7: note: candidate: 'FsFile& FsFile::operator=(const FsFile&)'
916 | class FsFile : public StreamFile<FsBaseFile, uint64_t> {
| ^~~~~~
.pio\libdeps\genericSTM32F103C8\SdFat - Adafruit Fork\src/FsLib/FsFile.h:916:7: note: no known conversion for argument 1 from 'File32' to 'const FsFile&'
.pio\libdeps\genericSTM32F103C8\SdFat - Adafruit Fork\src/FsLib/FsFile.h:916:7: note: candidate: 'FsFile& FsFile::operator=(FsFile&&)'
.pio\libdeps\genericSTM32F103C8\SdFat - Adafruit Fork\src/FsLib/FsFile.h:916:7: note: no known conversion for argument 1 from 'File32' to 'FsFile&&'
Compiling .pio\build\genericSTM32F103C8\FrameworkArduino\stm32\startup_stm32yyxx.S.o
Compiling .pio\build\genericSTM32F103C8\FrameworkArduino\wiring_analog.c.o
Compiling .pio\build\genericSTM32F103C8\FrameworkArduino\wiring_digital.c.o
Compiling .pio\build\genericSTM32F103C8\FrameworkArduino\wiring_pulse.cpp.o
Compiling .pio\build\genericSTM32F103C8\FrameworkArduino\wiring_shift.c.o
Compiling .pio\build\genericSTM32F103C8\FrameworkArduino\wiring_time.c.o
Archiving .pio\build\genericSTM32F103C8\lib893\libAdafruit SPIFlash.a
*** [.pio\build\genericSTM32F103C8\libe65\SimpleFTPServer\FtpServer.cpp.o] Error 1
========================================== [FAILED] Took 20.63 seconds ==========================================

• The terminal process "C:\Users\dleun.platformio\penv\Scripts\platformio.exe 'run'" terminated with exit code: 1.
• Terminal will be reused by tasks, press any key to close it.

Any clues on what I have been missing?

[dleung18]

I asked co-pilot to fix it for me:
I can see the main error: no match for 'operator=' (operand types are 'FsFile' and 'File32') in FtpServer.cpp at line 2742. This is a type mismatch in the SimpleFTPServer library where it's trying to assign a File32 to an FsFile.

Now I can see the issue. For STORAGE_SDFAT2 (lines 425-435), FTP_FILE is defined as FsFile, but the STORAGE_MANAGER.open() is returning File32 which is not compatible with FsFile.
Now I understand the problem. When you use SdFat 2.x, the open() method returns a File32 object, but the library is expecting it to be assignable to FsFile. This is a compatibility issue between the SimpleFTPServer library version and the SdFat library version.

The issue is that in newer versions of SdFat 2.x, File32 is the return type, while FsFile is a different type. The fix is to update the type definition in FtpServer.h.

The error is still showing the old state. Let me check the file directly to see if my edit was applied correctly:

Read , lines 425 to 435

Good! The file was updated. However, the error message still references FsFile. This suggests that the compiler might have cached the old version or there's an issue with how the library is being compiled. The problem might be that the library files in libdeps need to be cleaned and rebuilt. Let me clear the build and try again:

Now let's rebuild:

Ran terminal command: C:\Users\dleun.platformio\penv\Scripts\platformio.exe run

Excellent! The build was successful! The error about 'FsFile' and 'File32' is now fixed. The warnings about the deprecated boolean type are just warnings from the EthernetENC library (not errors), so the project now compiles successfully.

Summary

The issue was in the SimpleFTPServer library's type definition for STORAGE_SDFAT2. The problem:

• Old Definition: #define FTP_FILE FsFile
• New Definition: #define FTP_FILE File32

Why this occurred: In newer versions of the SdFat-Adafruit Fork library (v2.3.102), the open() method returns a File32 object, but the SimpleFTPServer library was using the older FsFile type, causing a type mismatch during compilation.

What was fixed: Changed FtpServer.h to use File32 instead of FsFile for both FTP_FILE and FTP_DIR when STORAGE_SDFAT2 is selected.

The build now completes successfully with only deprecation warnings from the EthernetENC library, which don't prevent compilation.

---

This thread can be closed.
Thanks for your help !

[dleung18]

Hello, the ftp server is set and up and running, but I got some commands erratic behaviors. LIST is working, but delete, rename, read, write are not working. Any clues about this? Below is my screen capture: -
Adafruit SPI Flash FatFs Full Usage Example
JEDEC ID: EF4017
Flash size: 8388608
Mounted filesystem!

DHCP OK!
Local IP : 192.168.1.170
Subnet Mask : 255.255.255.0
Gateway IP : 192.168.1.1
DNS Server : 192.168.1.1
Ethernet Successfully Initialized

Initializing FTP server...
Network Type: Unknown Network Type
Storage Type: SdFat2
NOT ANONYMOUS
DL
Ftp server started!
Ftp server waiting for connection on port 21

I use old school FTP command line client, connection is stable, so it means networking has no issues. It seems something with the file manager or storage manager on your codes.

Client connected!
-U-S-E-R- -D-L-
Command is: USER
USER: DL DL
-P-A-S-S- -p-a-s-s-w-o-r-d-
Command is: PASS
PASS: password
PASS PARAM: password
PASS OK: 0
Authentication Ok. Waiting for commands.
-P-O-R-T- -1-9-2-,-1-6-8-,-1-,-2-0-7-,-2-1-5-,-9-9-
Command is: PORT
Data IP set to 192.168.1.207
Data port set to 55139
-L-I-S-T-
Command is: LIST
List of file!!
OpenDIR cwdName -> /
Dir opened!!
-rw-rw-r-- 1 DL 4780 Jan 01 00:00 All file read!!
-D-E-L-E- -t-e-s-t-.-t-x-t-
Command is: DELE
CWD PATH: cwdName -> / - param nullptr - path not set
utf8_strlen9
PATH --> /test.txt ...NOT EXIST!
-P-W-D-
Command is: PWD

PUT and GET are not working ::-

Command is: RETR
CWD PATH: cwdName -> / - param nullptr - path not set
utf8_strlen9
PATH --> /test.txt ...NOT EXIST!

test.txt is really over there on the root directory /.

Any clues about this?
Please take a look into it. Thanks.