// TC1 used in compare mode:
#define TC_CLEARBYCOMPARE 0x08
// TC1 prescaler const
#define TC1_PRESCALER_0 0x00
#define TC1_PRESCALER_1 0x01
#define TC1_PRESCALER_8 0x02
#define TC1_PRESCALER_64 0x03
#define TC1_PRESCALER_256 0x04
#define TC1_PRESCALER_1024 0x05

#define TC1_Stop(); TCCR1B =TC1_PRESCALER_0+TC_CLEARBYCOMPARE;
#define TC1_Start(); TCCR1B =TC1_PRESCALER_1+TC_CLEARBYCOMPARE;