Commit 84a76ad5 authored by Daniel Friesel's avatar Daniel Friesel
Browse files

update energybench. showcase for MSP430 EnergyTrace inaccuracias 

reported current is inaccurate (>8% energy deviation).
Also, EnergyTrace++ significantly increases sleep/wakeup times and thus
affects the sytem's timing.
parent e90590be

src/app/energybench/Makefile.inc

+0 −2
Original line number Diff line number Diff line 
timer_cycles ?= 1

loop ?= 1

src/app/energybench/main.cc

+39 −66
Original line number Diff line number Diff line
@@ -3,79 +3,52 @@ 
#include "driver/stdout.h"

#include "driver/uptime.h"



#ifndef TIMER_CYCLES

#error makeflag timer_cycles=1 required

#endif



void loop(void)

{

#if 0

	static unsigned char i = 0;



	switch (i) {

		case 0:

			gpio.led_on(0);

			gpio.led_off(0);

			break;

		case 1:

			gpio.led_on(0);

			arch.delay_us(1);

			gpio.led_off(0);

			break;

		case 2:

			gpio.led_on(0);

			arch.delay_us(2);

			gpio.led_off(0);

			break;

		case 3:

			gpio.led_on(1);

			gpio.led_off(1);

			break;

		case 4:

			gpio.led_on(1);

			arch.delay_us(1);

			gpio.led_off(1);

			break;

		case 5:

			gpio.led_on(1);

			arch.delay_us(2);

			gpio.led_off(1);

			break;

		case 6:

			gpio.led_on(0);

			break;

		case 7:

			gpio.led_off(0);

			break;

		case 8:

			gpio.led_on(1);

			break;

		case 9:

			gpio.led_off(1);

			break;

		default:

			break;

	}

	



	i = (i+1) % 10;

#endif

}



int main(void)

{

	arch.setup();

	gpio.setup();

	kout.setup();



	kout << "Hello, World!" << endl;

	kout << "Test, World!" << endl;

	kout << dec << uptime.get_cycles() << endl;

	kout << dec << uptime.get_cycles() << endl;

	kout << dec << uptime.get_cycles() << endl;

	kout << dec << uptime.get_cycles() << endl;

	gpio.output(GPIO::p1_1);



	arch.delay_ms(5000);



	gpio.write(GPIO::p1_1, 1);

	__delay_cycles(64000); // 8 ms

	__delay_cycles(64000); // 8 ms

	gpio.write(GPIO::p1_1, 0);

	__delay_cycles(64000); // 8 ms

	__delay_cycles(64000); // 8 ms

	gpio.write(GPIO::p1_1, 1);

	__delay_cycles(64000); // 8 ms

	__delay_cycles(64000); // 8 ms

	gpio.write(GPIO::p1_1, 0);



	for (uint8_t i = 0; i < 200; i++) {

		arch.sleep_ms(50);

		gpio.write(GPIO::p1_1, 1);

		arch.sleep_ms(i);

		gpio.write(GPIO::p1_1, 0);

		arch.sleep_ms(i);

		gpio.write(GPIO::p1_1, 1);

		arch.sleep_ms(i);

		gpio.write(GPIO::p1_1, 0);

	}



	for (uint8_t i = 0; i < 200; i++) {

		arch.delay_ms(50);

		gpio.write(GPIO::p1_1, 1);

		arch.delay_ms(i);

		gpio.write(GPIO::p1_1, 0);

		arch.delay_ms(i);

		gpio.write(GPIO::p1_1, 1);

		arch.delay_ms(i);

		gpio.write(GPIO::p1_1, 0);

	}



	arch.idle_loop();

	while(1) {

		arch.idle();

	}



	return 0;

}