EEPROM doesn't work about easythreed-k7-stm32

[schmttc]

Yeah I'm not sure what's going on, I'll wait on other's feedback to see if there's any issues.

[schmttc]

STM32 needs an SD card to use as EEPROM, but in this case it look like the SD card isn't being mounted on first boot.
If you insert the SD card, issue "M21" and then issue "M500" does it work?

[real-artswan]

I see, didn't know that it needs SD, haven't noticed that on the original firmware, by the way thanks for firmware. Printer seems work better (at least subjectively;).
Can you tell, does it read EEPROM on mounting SD or on boot only?

[schmttc]

The original firmware was based on Marlin 1, I guess there have been some changes.
I've just had a look and I think the SD card detection pin is set wrong, in Marlin/configuration_adv.h can you change 'SD_DETECT_STATE' to 'LOW' and let me know if the SD card works on boot?

#define SD_DETECT_STATE LOW

[real-artswan]

You're right EEPROM doesn't work without that fix, must be #define SD_DETECT_STATE LOW.
Then M500 works as expected, it stores into file EEPROM.DAT. By the way inserting SD resets board and reads EEPROM

[real-artswan]

#6
by the way, extracting/inserting SD card when a printer is turned on brakes the card somehow so printer can't see it. The card need to be formatted in this case and don't forget to save and copy eeprom file back.

[kossnikita]

Actually, ET4000+ has I2C EEPROM. You have to activate it in config

#define IIC_BL24CXX_EEPROM
#define IIC_EEPROM_SDA                  PB7
#define IIC_EEPROM_SCL                  PB6
#define MARLIN_EEPROM_SIZE             0x800  // 2K (24C16)

[schmttc]

Actually, ET4000+ has I2C EEPROM. You have to activate it in config

#define IIC_BL24CXX_EEPROM
#define IIC_EEPROM_SDA                  PB7
#define IIC_EEPROM_SCL                  PB6
#define MARLIN_EEPROM_SIZE             0x800  // 2K (24C16)

Thanks, that's great! I'll add it in when I get a chance to test.

[schmttc]

Reopening because I haven't implemented EEPROM yet, and it's come up again in #10 (comment)

[schmttc]

Actually, ET4000+ has I2C EEPROM. You have to activate it in config

#define IIC_BL24CXX_EEPROM
#define IIC_EEPROM_SDA                  PB7
#define IIC_EEPROM_SCL                  PB6
#define MARLIN_EEPROM_SIZE             0x800  // 2K (24C16)

Thanks, that's great! I'll add it in when I get a chance to test.

Adding this code to pins_MKS_ROBIN_LITE.h results in an error:

14:02:46.223 : echo:Error writing to EEPROM!
14:02:46.239 : echo:Error writing to EEPROM!
14:02:46.245 : echo:Error writing to EEPROM!
14:02:46.261 : echo:Error writing to EEPROM!
14:02:46.277 : echo:Error writing to EEPROM!
14:02:46.292 : echo:Error writing to EEPROM!
14:02:46.292 : echo:Error writing to EEPROM!
14:02:46.308 : echo:Error writing to EEPROM!
14:02:46.323 : echo:Error writing to EEPROM!
14:02:46.346 : echo:Error writing to EEPROM!
14:02:46.346 : echo:Error writing to EEPROM!
14:02:46.361 : echo:Error writing to EEPROM!
14:02:46.377 : echo:Error writing to EEPROM!
14:02:46.393 : echo:Error writing to EEPROM!
14:02:46.408 : echo:Error writing to EEPROM!
14:02:46.424 : echo:Error writing to EEPROM!
14:02:46.440 : echo:Error writing to EEPROM!
14:02:46.446 : echo:Error writing to EEPROM!
14:02:46.462 : echo:Error writing to EEPROM!
14:02:46.477 : echo:Error writing to EEPROM!
14:02:46.493 : echo:Error writing to EEPROM!
14:02:46.493 : echo:Error writing to EEPROM!
14:02:46.509 : echo:Error writing to EEPROM!
14:02:46.524 : echo:Error writing to EEPROM!
14:02:46.546 : echo:Error writing to EEPROM!
14:02:46.546 : echo:Error writing to EEPROM!
14:02:46.562 : echo:Error writing to EEPROM!
14:02:46.578 : echo:Error writing to EEPROM!
14:02:46.593 : echo:Error writing to EEPROM!
14:02:46.609 : echo:Error writing to EEPROM!
14:02:46.625 : echo:Error writing to EEPROM!
14:02:46.640 : echo:Error writing to EEPROM!
14:02:46.647 : echo:Error writing to EEPROM!
14:02:46.662 : echo:Error writing to EEPROM!
14:02:46.678 : echo:Error writing to EEPROM!
14:02:46.678 : echo:Error writing to EEPROM!
14:02:46.694 : echo:Error writing to EEPROM!
14:02:46.709 : echo:Error writing to EEPROM!
14:02:46.725 : echo:Error writing to EEPROM!
14:02:46.747 : echo:Error writing to EEPROM!
14:02:46.747 : echo:Error writing to EEPROM!
14:02:46.762 : echo:Error writing to EEPROM!
14:02:46.778 : echo:Error writing to EEPROM!
14:02:46.794 : echo:Error writing to EEPROM!
14:02:46.809 : echo:Error writing to EEPROM!
14:02:46.825 : echo:Error writing to EEPROM!
14:02:46.825 : echo:Error writing to EEPROM!
14:02:46.847 : echo:Error writing to EEPROM!
14:02:46.863 : echo:Error writing to EEPROM!
14:02:46.878 : echo:Error writing to EEPROM!
14:02:46.894 : echo:Error writing to EEPROM!
14:02:46.894 : echo:Error writing to EEPROM!
14:02:46.909 : echo:Error writing to EEPROM!
14:02:46.925 : echo:Error writing to EEPROM!
14:02:46.947 : echo:Error writing to EEPROM!
14:02:46.947 : echo:Error writing to EEPROM!
14:02:46.963 : echo:Error writing to EEPROM!
14:02:46.979 : echo:Error writing to EEPROM!
14:02:46.994 : echo:Error writing to EEPROM!
14:02:47.010 : echo:Error writing to EEPROM!
14:02:47.025 : echo:Error writing to EEPROM!
14:02:47.041 : echo:Error writing to EEPROM!
14:02:47.048 : echo:Error writing to EEPROM!
14:02:47.063 : echo:Error writing to EEPROM!
14:02:47.079 : echo:Error writing to EEPROM!
14:02:47.094 : echo:Error writing to EEPROM!
14:02:47.094 : echo:Error writing to EEPROM!
14:02:47.110 : echo:Error writing to EEPROM!
14:02:47.126 : echo:Error writing to EEPROM!
14:02:47.148 : echo:Error writing to EEPROM!
14:02:47.148 : echo:Error writing to EEPROM!
14:02:47.163 : echo:Error writing to EEPROM!
14:02:47.179 : echo:Error writing to EEPROM!
14:02:47.195 : echo:Error writing to EEPROM!
14:02:47.210 : echo:Error writing to EEPROM!
14:02:47.226 : echo:Error writing to EEPROM!
14:02:47.226 : echo:Settings Stored (6 bytes; crc 39375)
14:02:47.226 : Error:EEPROM datasize error.

[kossnikita]

Do you have an oscilloscope or logic analyzer? I would like to know if there is at least some signal on the eeprom chip.

Unfortunately I no longer have this board. So I can't debug from my side. But I still had the Marlin project, which worked.

pins_MKS_ROBIN_LITE.h

#if ANY(NO_EEPROM_SELECTED, I2C_EEPROM)
  #define IIC_BL24CXX_EEPROM              
  #define IIC_EEPROM_SDA                  PB7
  #define IIC_EEPROM_SCL                  PB6
  #define MARLIN_EEPROM_SIZE             0x800  // 2K (24C16)

  #undef NO_EEPROM_SELECTED
#endif

[schmttc]

No scope, but after some playing around I have found the following code works for me

#if NO_EEPROM_SELECTED
  #define I2C_EEPROM                              // AT24Cxx
  #define MARLIN_EEPROM_SIZE              0x800  // 2K (24C16)
#endif

[schmttc]

Resolved by #17

[kossnikita]

Pretty weird. I'm sure I2C_EEPROM didn't work for me.