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The project references http://www.chibios.com/forum/viewtopic.php?t=351, which is compiled from Eclipse. Then I modify the file path and rewrite makefile for building on Linux.
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This is a MP3 player, using STM32F4-Discovery board providing a audio speaker. The project uses RTOS named ChibiOS, and music are from SD card. In addition, the communication from SD card to STM32F4 uses SPI interface instead of SDIO.
##The pin connection [SD Card] [STM32F4] MISO -----> PA6 MOSI -----> PA7 SCK -----> PA5 NSS -----> PC4