Hw3B_Final_PPS_Master -

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main.cpp@0:231665ad8139, 2010-12-03 (annotated)

Committer:: sun831011
Date:: Fri Dec 03 22:52:15 2010 +0000
Revision:: 0:231665ad8139

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User	Revision	Line number	New contents of line
sun831011	0:231665ad8139	1	#include "mbed.h"
sun831011	0:231665ad8139	2
sun831011	0:231665ad8139	3	Serial pc(USBTX, USBRX); // tx, rx
sun831011	0:231665ad8139	4	Serial ss(p9, p10); //tx rx
sun831011	0:231665ad8139	5	Serial ss_sne(p13, p14); //tx rx
sun831011	0:231665ad8139	6
sun831011	0:231665ad8139	7	DigitalOut myled1(LED1);
sun831011	0:231665ad8139	8	DigitalOut myled2(LED2);
sun831011	0:231665ad8139	9
sun831011	0:231665ad8139	10	DigitalOut masterOut(p23);
sun831011	0:231665ad8139	11	InterruptIn masterIn(p22);
sun831011	0:231665ad8139	12	InterruptIn slaveIn(p21);
sun831011	0:231665ad8139	13
sun831011	0:231665ad8139	14	unsigned long counter = 0;
sun831011	0:231665ad8139	15	int divider = 1;
sun831011	0:231665ad8139	16	int pro_flag = 0;
sun831011	0:231665ad8139	17	int task_flag = 0;
sun831011	0:231665ad8139	18	unsigned long long t1, t2, t3, t4;
sun831011	0:231665ad8139	19	typedef struct timeval {
sun831011	0:231665ad8139	20	unsigned long tv_sec;
sun831011	0:231665ad8139	21	unsigned long tv_usec;
sun831011	0:231665ad8139	22	} timeval;
sun831011	0:231665ad8139	23	//struct timeval capture_t;
sun831011	0:231665ad8139	24
sun831011	0:231665ad8139	25	void Timer0_init(void);
sun831011	0:231665ad8139	26	void Timer0_IRQHandler(void);
sun831011	0:231665ad8139	27	void Sync_protocol(void);
sun831011	0:231665ad8139	28	void getTime(struct timeval *tv);
sun831011	0:231665ad8139	29	int runAtTime (void (*fptr)(void), struct timeval tv);
sun831011	0:231665ad8139	30	void toggle(void);
sun831011	0:231665ad8139	31	void runAtTrigger( );
sun831011	0:231665ad8139	32	void reportToggle(struct timeval *tv);
sun831011	0:231665ad8139	33	long long sne(void);
sun831011	0:231665ad8139	34
sun831011	0:231665ad8139	35	int main( )
sun831011	0:231665ad8139	36	{
sun831011	0:231665ad8139	37	struct timeval t_run;
sun831011	0:231665ad8139	38	// t_run.tv_sec = 1000;
sun831011	0:231665ad8139	39	// t_run.tv_usec = 0;
sun831011	0:231665ad8139	40	long long t_run_m;
sun831011	0:231665ad8139	41	long long i = 61;
sun831011	0:231665ad8139	42	// wait(1);
sun831011	0:231665ad8139	43	// masterIn.rise(&runAtTrigger);
sun831011	0:231665ad8139	44	// masterIn.fall(&runAtTrigger);
sun831011	0:231665ad8139	45	slaveIn.rise(&runAtTrigger);
sun831011	0:231665ad8139	46	slaveIn.fall(&runAtTrigger);
sun831011	0:231665ad8139	47	Timer0_init( );
sun831011	0:231665ad8139	48	t_run_m = i*1000000;
sun831011	0:231665ad8139	49	ss_sne.printf("%llu", t_run_m);
sun831011	0:231665ad8139	50	ss_sne.putc('E');
sun831011	0:231665ad8139	51	t_run.tv_sec = t_run_m/1000000;
sun831011	0:231665ad8139	52	t_run.tv_usec = t_run_m%1000000;
sun831011	0:231665ad8139	53	// pc.printf("s%lu ",t_run.tv_sec);
sun831011	0:231665ad8139	54	// pc.printf("%lu\n",t_run.tv_usec);
sun831011	0:231665ad8139	55	while (1)
sun831011	0:231665ad8139	56	{
sun831011	0:231665ad8139	57	if (!task_flag)
sun831011	0:231665ad8139	58	task_flag = runAtTime (&toggle, t_run);
sun831011	0:231665ad8139	59	else if (task_flag && i < 25000){
sun831011	0:231665ad8139	60	i++;
sun831011	0:231665ad8139	61	t_run_m = i*1000000;
sun831011	0:231665ad8139	62	ss_sne.printf("%llu", t_run_m);
sun831011	0:231665ad8139	63	ss_sne.putc('E');
sun831011	0:231665ad8139	64	t_run.tv_sec = t_run_m/1000000;
sun831011	0:231665ad8139	65	t_run.tv_usec = t_run_m%1000000;
sun831011	0:231665ad8139	66	//pc.printf("s%lu ",t_run.tv_sec);
sun831011	0:231665ad8139	67	//pc.printf("%lu\n",t_run.tv_usec);
sun831011	0:231665ad8139	68	task_flag = 0;
sun831011	0:231665ad8139	69	}
sun831011	0:231665ad8139	70	if (pro_flag == 1){
sun831011	0:231665ad8139	71	Sync_protocol( );
sun831011	0:231665ad8139	72	pro_flag = 0;
sun831011	0:231665ad8139	73	}
sun831011	0:231665ad8139	74	}
sun831011	0:231665ad8139	75	}
sun831011	0:231665ad8139	76
sun831011	0:231665ad8139	77	void Timer0_init(void)
sun831011	0:231665ad8139	78	{
sun831011	0:231665ad8139	79	LPC_SC->PCLKSEL0 = 0x0066;
sun831011	0:231665ad8139	80	LPC_SC->PCONP \|= 1<<1; // Timer0 Power On
sun831011	0:231665ad8139	81	LPC_TIM0->MR0 = 2880000000; // Match count for 30S
sun831011	0:231665ad8139	82	LPC_TIM0->MCR = 3; // Interrupt and Reset on Match
sun831011	0:231665ad8139	83	LPC_TIM0->TCR = 1; // Enable Timer0
sun831011	0:231665ad8139	84	NVIC_SetVector (TIMER0_IRQn, (uint32_t)&Timer0_IRQHandler);
sun831011	0:231665ad8139	85	NVIC_EnableIRQ(TIMER0_IRQn);
sun831011	0:231665ad8139	86	}
sun831011	0:231665ad8139	87
sun831011	0:231665ad8139	88	void Timer0_IRQHandler(void)
sun831011	0:231665ad8139	89	{
sun831011	0:231665ad8139	90	LPC_TIM0->IR = 1;
sun831011	0:231665ad8139	91	LPC_TIM0->MR0 = 2880000000; // Match count for 30S
sun831011	0:231665ad8139	92	LPC_TIM0->TCR = 1; // Enable Timer0
sun831011	0:231665ad8139	93	counter = counter + 1;
sun831011	0:231665ad8139	94	if ( counter % divider ==0 )
sun831011	0:231665ad8139	95	pro_flag = 1;
sun831011	0:231665ad8139	96	}
sun831011	0:231665ad8139	97
sun831011	0:231665ad8139	98	void Sync_protocol(void)
sun831011	0:231665ad8139	99	{
sun831011	0:231665ad8139	100	char x;
sun831011	0:231665ad8139	101	t1 = counter * 4294967296 + LPC_TIM0->TC;
sun831011	0:231665ad8139	102	ss.putc('S');
sun831011	0:231665ad8139	103	// pc.printf("t1 = %llu\n", t1);
sun831011	0:231665ad8139	104	ss.printf("%llu", t1);
sun831011	0:231665ad8139	105	ss.putc('E');
sun831011	0:231665ad8139	106	while (1){
sun831011	0:231665ad8139	107	if (ss.readable( )){
sun831011	0:231665ad8139	108	x = ss.getc( );
sun831011	0:231665ad8139	109	t4 = counter * 4294967296 + LPC_TIM0->TC;
sun831011	0:231665ad8139	110	ss.printf("%llu", t4);
sun831011	0:231665ad8139	111	ss.putc('E');
sun831011	0:231665ad8139	112	// pc.printf("%c\n", x);
sun831011	0:231665ad8139	113	// pc.printf("t4 = %llu\n", t4);
sun831011	0:231665ad8139	114	break;
sun831011	0:231665ad8139	115	}
sun831011	0:231665ad8139	116	}
sun831011	0:231665ad8139	117	}
sun831011	0:231665ad8139	118
sun831011	0:231665ad8139	119	void getTime(struct timeval *tv){
sun831011	0:231665ad8139	120	unsigned long ns, hs;
sun831011	0:231665ad8139	121	ns = LPC_TIM0->TC;
sun831011	0:231665ad8139	122	hs = counter;
sun831011	0:231665ad8139	123	tv->tv_sec = hs*30 + ns/100000000;
sun831011	0:231665ad8139	124	tv->tv_usec = (ns%100000000)/100;
sun831011	0:231665ad8139	125	}
sun831011	0:231665ad8139	126
sun831011	0:231665ad8139	127	int runAtTime (void (*fptr)(void), struct timeval tv){
sun831011	0:231665ad8139	128	struct timeval current_t;
sun831011	0:231665ad8139	129	getTime(&current_t);
sun831011	0:231665ad8139	130	if (tv.tv_sec <= current_t.tv_sec && tv.tv_usec <= current_t.tv_usec){
sun831011	0:231665ad8139	131	(*fptr) ( );
sun831011	0:231665ad8139	132	// capture_t=current_t;
sun831011	0:231665ad8139	133	return 1;
sun831011	0:231665ad8139	134	}
sun831011	0:231665ad8139	135	else
sun831011	0:231665ad8139	136	return 0;
sun831011	0:231665ad8139	137	}
sun831011	0:231665ad8139	138
sun831011	0:231665ad8139	139	void toggle(void){
sun831011	0:231665ad8139	140	masterOut = !masterOut;
sun831011	0:231665ad8139	141	}
sun831011	0:231665ad8139	142
sun831011	0:231665ad8139	143	void runAtTrigger(void){
sun831011	0:231665ad8139	144	struct timeval response_t;
sun831011	0:231665ad8139	145	reportToggle(&response_t);
sun831011	0:231665ad8139	146	}
sun831011	0:231665ad8139	147
sun831011	0:231665ad8139	148	void reportToggle(struct timeval *tv)
sun831011	0:231665ad8139	149	{
sun831011	0:231665ad8139	150	getTime(tv);
sun831011	0:231665ad8139	151	// pc.printf("r %u ", capture_t.tv_sec);
sun831011	0:231665ad8139	152	// pc.printf("%u\n", capture_t.tv_usec);
sun831011	0:231665ad8139	153	pc.printf("r %u ", tv->tv_sec);
sun831011	0:231665ad8139	154	pc.printf("%u\n", tv->tv_usec);
sun831011	0:231665ad8139	155	myled2 = !myled2;
sun831011	0:231665ad8139	156	}
sun831011	0:231665ad8139	157
sun831011	0:231665ad8139	158	long long sne( ){
sun831011	0:231665ad8139	159	char temp;
sun831011	0:231665ad8139	160	char incode[100];
sun831011	0:231665ad8139	161	int i=0;
sun831011	0:231665ad8139	162	int j=0;
sun831011	0:231665ad8139	163	long long sum = 0;
sun831011	0:231665ad8139	164	while ((temp = pc.getc())!= 'E') { //getchar
sun831011	0:231665ad8139	165	incode[i] = temp; //put the original char in incode
sun831011	0:231665ad8139	166	i++;
sun831011	0:231665ad8139	167	}
sun831011	0:231665ad8139	168	for (j=1;j<i;j++){
sun831011	0:231665ad8139	169	sum = (incode[j]-'0')+sum*10;
sun831011	0:231665ad8139	170	}
sun831011	0:231665ad8139	171	if (incode[0]=='S'){
sun831011	0:231665ad8139	172	ss_sne.printf("%llu", sum);
sun831011	0:231665ad8139	173	ss_sne.putc('E');
sun831011	0:231665ad8139	174	return sum;
sun831011	0:231665ad8139	175	}
sun831011	0:231665ad8139	176	else
sun831011	0:231665ad8139	177	return 0;
sun831011	0:231665ad8139	178	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	03 Dec 2010
Imports:	4
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

main.cpp@0:231665ad8139, 2010-12-03 (annotated)

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