nitrocarproject -

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main_programs/main2.h@2:a079de4fd5b9, 2010-08-20 (annotated)

User	Revision	Line number	New contents of line
joe	0:960b355eaa84	1	#include "mbed.h"
joe	0:960b355eaa84	2	#include "Counter.h"
joe	0:960b355eaa84	3	DigitalOut led1(LED1);
joe	0:960b355eaa84	4	#define TICK_PERIOD 0.5
joe	0:960b355eaa84	5	Counter counter(p18);
joe	0:960b355eaa84	6
joe	0:960b355eaa84	7	Ticker tick;
joe	0:960b355eaa84	8	volatile int tick_active = 0;
joe	0:960b355eaa84	9
joe	0:960b355eaa84	10	void dotick (void) {
joe	0:960b355eaa84	11	tick_active = 1;
joe	0:960b355eaa84	12
joe	0:960b355eaa84	13	}
joe	0:960b355eaa84	14	float samples [2] = {0};
joe	0:960b355eaa84	15	int index2 = 0;
joe	0:960b355eaa84	16	int start = 1;
joe	0:960b355eaa84	17
joe	0:960b355eaa84	18	int rpm_counter=0;
joe	0:960b355eaa84	19	int main() {
joe	0:960b355eaa84	20
joe	0:960b355eaa84	21	tick.attach(dotick,0.5);
joe	0:960b355eaa84	22	while (1) {
joe	0:960b355eaa84	23	while (tick_active == 0) {}
joe	0:960b355eaa84	24	rpm_counter = counter.read();
joe	0:960b355eaa84	25	counter.reset();
joe	0:960b355eaa84	26
joe	0:960b355eaa84	27	tick_active = 0;
joe	0:960b355eaa84	28	samples[index2] = 120*rpm_counter;
joe	0:960b355eaa84	29	index2++;
joe	0:960b355eaa84	30	if (index2 >= 2) {
joe	0:960b355eaa84	31	index2 = 0;
joe	0:960b355eaa84	32	}
joe	0:960b355eaa84	33	int i;
joe	0:960b355eaa84	34	start = 1;
joe	0:960b355eaa84	35	for (i=0; i<2; i++) {
joe	0:960b355eaa84	36	if (samples[i] <180) {
joe	0:960b355eaa84	37	start = 0;
joe	0:960b355eaa84	38	}
joe	0:960b355eaa84	39	}
joe	0:960b355eaa84	40	if (start) {
joe	0:960b355eaa84	41	led1 = !led1;
joe	0:960b355eaa84	42	}
joe	0:960b355eaa84	43	}
joe	0:960b355eaa84	44	}
joe	0:960b355eaa84	45