Commit 63477267 authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

MSP430 timer.stop: Disable timer entirely to save energy

parent ad6008f9

include/arch/msp430fr5969lp/driver/timer.h

+8 −8
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ class Timer { 


#if F_CPU == 1000000UL

		inline void setup_khz(uint16_t const frequency) {

			TA0CTL = TASSEL__SMCLK | ID__1 | MC__UP; // -> 1 MHz base

			TA0CTL = TASSEL__SMCLK | ID__1; // -> 1 MHz base

			TA0EX0 = 0;

			TA0CCR0 = 1000UL / frequency;

			TA0CTL |= TACLR;
@@ -33,11 +33,11 @@ class Timer { 


		inline void setup_hz(uint16_t const frequency) { // 1 MHz base

			if (frequency < 20) {

				TA0CTL = TASSEL__SMCLK | ID__8 | MC__UP; // /8

				TA0CTL = TASSEL__SMCLK | ID__8; // /8

				TA0EX0 = 1; // /2 -> /16 -> 62500 Hz

				TA0CCR0 = 62500UL / frequency;

			} else {

				TA0CTL = TASSEL__SMCLK | ID__1 | MC__UP;

				TA0CTL = TASSEL__SMCLK | ID__1;

				TA0EX0 = 0;

				TA0CCR0 = 1000000UL / frequency;

			}
@@ -45,14 +45,14 @@ class Timer { 
		}

#else

		inline void setup_khz(uint16_t const frequency) {

			TA0CTL = TASSEL__SMCLK | _TA0_MAIN_DIV | MC__UP; // -> 2 MHz base

			TA0CTL = TASSEL__SMCLK | _TA0_MAIN_DIV; // -> 2 MHz base

			TA0EX0 = 0;

			TA0CCR0 = 2000UL / frequency;

			TA0CTL |= TACLR;

		}



		inline void setup_hz(uint16_t const frequency) { // 2 MHz base

			TA0CTL = TASSEL__SMCLK | _TA0_MAIN_DIV | MC__UP;

			TA0CTL = TASSEL__SMCLK | _TA0_MAIN_DIV;

			TA0EX0 = 0;

			TA0CCR0 = 2000000UL / frequency;

			TA0CTL |= TACLR;
@@ -61,14 +61,14 @@ class Timer { 


		inline void start(unsigned char const interrupt) {

			if (interrupt) {

				TA0CTL |= TACLR | TAIE;

				TA0CTL |= MC__UP | TACLR | TAIE;

			} else {

				TA0CTL |= TACLR;

				TA0CTL |= MC__UP | TACLR;

			}

		}



		inline void stop() {

			TA0CTL &= ~TAIE;

			TA0CTL &= ~MC__UP;

		}

};