• _stack_start : startup_stm32f4xx.c
• audio_setups : audio_stm32.c
• bus_i2c : stm32_i2c.h , stm32_i2c.c
• bus_spi : stm32_spi.h , stm32_spi.c
• bus_usart : stm32_usart.h , stm32_usart.c
• dma_play_xfer : audio_stm32.c
• gVectors : startup_stm32f4xx.c
• interruptHandler : keyboard.c
• Keymap_Ascom : keyboard.c
• setup : audio_stm32.c
• SystemClock : system_stm32f4xx.h