STM32F1: Init EEPROM SPI pin modes

[tpruvot]

Marlin/src/HAL/shared/SpiEeprom.cpp only use WRITE()
which doesn't set the gpio input/outputs on start.

[tpruvot]

rmm, look like these pins were renamed, i need to double check... SCK

unsure, but its missing spiInit() too for the eeprom

[thinkyhead]

The only reference so far is in the Longer pins…

//#define EEPROM_SCK  BOARD_SPI1_SCK_PIN   // PA5 pin 30
//#define EEPROM_MISO BOARD_SPI1_MISO_PIN  // PA6 pin 31
//#define EEPROM_MOSI BOARD_SPI1_MOSI_PIN  // PA7 pin 32

[tpruvot]

its in maple... the BOARD_xxxx

STM32F1/cores/maple/boards.h:156:#define BOARD_HAVE_SPI(n) (defined(BOARD_SPI##n##_NSS_PIN)  &&          \
STM32F1/cores/maple/boards.h:157:                           defined(BOARD_SPI##n##_SCK_PIN)  &&          \
STM32F1/cores/maple/boards.h:158:                           defined(BOARD_SPI##n##_MISO_PIN) &&          \
STM32F1/cores/maple/boards.h:159:                           defined(BOARD_SPI##n##_MOSI_PIN))

[tpruvot]

https://github.com/rogerclarkmelbourne/Arduino_STM32/blob/master/STM32F1/libraries/SPI/src/SPI.cpp#L68

[tpruvot]

So, to explain better the longer board case... there is only this "optional" huge and fast eeprom on SPI1... the sdcard is not using SPI but SDIO pins...