Commit e41dd62f authored by Daniel Friesel's avatar Daniel Friesel
Browse files

MSP430FR5994 counter: Track overflows.

parent d6cb4dbc

include/arch/msp430fr5994lp/driver/counter.h

+6 −2
Original line number Diff line number Diff line
@@ -13,7 +13,7 @@ class Counter { 


	public:

		uint16_t value;

		uint8_t overflow;

		volatile uint8_t overflow;



		Counter() : overflow(0) {}
@@ -21,12 +21,16 @@ class Counter { 
			overflow = 0;

			TA2CTL = TASSEL__SMCLK | ID__1 | MC__CONTINUOUS;

			TA2EX0 = 0;

			TA2CTL |= TACLR;

			TA2CTL |= TACLR | TAIE;

			asm volatile("nop");

			__eint();

			asm volatile("nop");

		}



		inline void stop() {

			TA2CTL = 0;

			value = TA2R;

			__dint();

		}

};

src/arch/msp430fr5994lp/driver/counter.cc

+11 −0
Original line number Diff line number Diff line
@@ -5,3 +5,14 @@ 
#endif



Counter counter;



#ifndef __acweaving

__attribute__((interrupt(TIMER2_A1_VECTOR))) void handle_timer2_overflow()

{

	if (TA2IV == 0x0e) {

		if (counter.overflow < 255) {

			counter.overflow++;

		}

	}

}

#endif