#ifndef __STM32GPIOMACROS_H__
#define __STM32GPIOMACROS_H__

#define MODER_DELETE(pin) ~(0x3U << (pin * 2))
#define OUTPUT(pin)  (0x01U << (pin * 2))
#define PULLUP(pin) (0x1U << (pin* 2))
#define ALTFUNC(pin) ((0x2) << (pin * 2))
#define PINMASK(pin) ((0x3) << (pin * 2))
#define SETAF(PORT,PIN,AF)  PORT->AFR[(PIN < 8 ? 0 : 1)] |= AF << ((PIN < 8 ? PIN : (PIN - 8)) * 4)
#define ANALOG(pin)  (0x03 << (pin * 2))

#define BITMASK_TO_BITNO(x) (x&0x1?0:x&0x2?1:x&0x4?2:x&0x8?3: \
		 x&0x10?4:x&0x20?5:x&0x40?6:x&0x80?7: \
		 x&0x100?8:x&0x200?9:x&0x400?10:x&0x800?11: \
		 x&0x1000?12:x&0x2000?13:x&0x4000?14:x&0x8000?15: \
		 x&0x10000?16:x&0x20000?17:x&0x40000?18:x&0x80000?19: \
		 x&0x100000?20:x&0x200000?21:x&0x400000?22:x&0x800000?23: \
		 x&0x1000000?24:x&0x2000000?25:x&0x4000000?26:x&0x8000000?27: \
		 x&0x10000000?28:x&0x20000000?29:x&0x40000000?30:x&0x80000000?31:32)

#endif /* __STM32GPIOMACROS_H__ */