Good Morning Arthi, I changed the port and pin connections under HAL_SDCard.c like this: Are they rightly written? However I am not sure about the PORTS (SPI_SEL, SPI_DIR, SPI_CS_SEL etc.) where exactly do i look for this info? I will make the layout changes you suggested and see what happens. Also in my physical layout there was no 0 ohm resistor on DAT3 because....yeah it was 0 ohm. But regarding the layout, do you feel mirroring the exact layout from TI's schematics will make the project work / a difference? My background in electronics is fundamental but I assumed the extra few resistors are for extra security and shouldn't really affect the way the program runs. Would love to hear your input on that as I am pretty new to the MSP430 family. Also yup, I am going through the mmc.c as well as the msc.c files slowly to see what does what and where. Thank you!
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