
I have a tft shield with sdcard + module ethernet, i make de bridge from resistor 16 to pin4, and after upload a code to arduino i saw not any archive created in sdcard.
after, uploaded a code test EXEMPLE>SDFAT>GRAVAR_TEMPERATURA_SD and archive created.
in ferduino code i changed "card.init(SPI_FULL_SPEED, ChipSelect_SD)" to "card.init(SPI_HALF_SPEED, ChipSelect_SD)" and too not create any archive, but when change to "card.init(SPI_QUARTER_SPEED, ChipSelect_SD)" all files are created in SD.
this correct? or did something wrong?