I am trying to communicate STM32F100RB with SD card. Here, I use a code provided by STM for STM32F100VB evolution board. This code contain many functionality like interfacing of Graphics LCD etc. I doesn't need all these except SD Card interfacing so i removed them. But when i debugging it with ST link it stuck into BusFault_handler. Why this is happening, I could not able to find. Why this exception come?