Initializing CC110X radio at SPI_0
drivers/cc110x/cc110x.c:cc110x_setup:50
Init 1: port 0, pin 3
cpu/stm32f3/periph/gpio.c:gpio_init:84

Context before hardfault:
   r0: 0x00000027
   r1: 0x20005f27
   r2: 0x20005f27
   r3: 0x200008e0
  r12: 0x00000000
   lr: 0x08007cdf
   pc: 0x08007d02
  psr: 0x21000000

FSR/FAR:
 CFSR: 0x00000400
 HFSR: 0x40000000
 DFSR: 0x00000008
 AFSR: 0x00000000
Misc
EXC_RET: 0xfffffffd
Attempting to reconstruct state for debugging...
In GDB:
  set $pc=0x8007d02
  frame 0
  bt

ISR stack overflowed by at least 8 bytes.