Hw3B_Final_Syn_Slave -

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yuwen sun / Mbed 2 deprecated Hw3B_Final_Syn_Slave

main.cpp@0:02918d5d9986, 2010-12-03 (annotated)

Committer:: sun831011
Date:: Fri Dec 03 22:22:06 2010 +0000
Revision:: 0:02918d5d9986

Who changed what in which revision?

User	Revision	Line number	New contents of line
sun831011	0:02918d5d9986	1	#include "mbed.h"
sun831011	0:02918d5d9986	2
sun831011	0:02918d5d9986	3	Serial pc(USBTX, USBRX); // tx, rx
sun831011	0:02918d5d9986	4	Serial ss(p9, p10); //tx rx
sun831011	0:02918d5d9986	5	DigitalOut myled(LED3);
sun831011	0:02918d5d9986	6	DigitalOut rst1(p11);
sun831011	0:02918d5d9986	7	DigitalOut slaveOut(p23);
sun831011	0:02918d5d9986	8
sun831011	0:02918d5d9986	9
sun831011	0:02918d5d9986	10	void Timer0_init(void);
sun831011	0:02918d5d9986	11	void Timer0_IRQHandler(void);
sun831011	0:02918d5d9986	12	void slavesyn(void);
sun831011	0:02918d5d9986	13	void backtime(void);
sun831011	0:02918d5d9986	14	long long assembletime(long long t);
sun831011	0:02918d5d9986	15
sun831011	0:02918d5d9986	16	long counter = 0;
sun831011	0:02918d5d9986	17	int divider = 4;
sun831011	0:02918d5d9986	18	long long t1;
sun831011	0:02918d5d9986	19	long long t2, t3, t4, t5, t6;
sun831011	0:02918d5d9986	20	long long delay;
sun831011	0:02918d5d9986	21	long long offdri;
sun831011	0:02918d5d9986	22	char test;
sun831011	0:02918d5d9986	23	long long receive(void);
sun831011	0:02918d5d9986	24
sun831011	0:02918d5d9986	25	long long sne(void);
sun831011	0:02918d5d9986	26
sun831011	0:02918d5d9986	27	int main( )
sun831011	0:02918d5d9986	28	{
sun831011	0:02918d5d9986	29	pc.printf("\nbegin\n");
sun831011	0:02918d5d9986	30	Timer0_init( );
sun831011	0:02918d5d9986	31
sun831011	0:02918d5d9986	32	while (1)
sun831011	0:02918d5d9986	33	{
sun831011	0:02918d5d9986	34	myled = 0;
sun831011	0:02918d5d9986	35
sun831011	0:02918d5d9986	36	if (ss.readable( )){
sun831011	0:02918d5d9986	37	myled = 1;
sun831011	0:02918d5d9986	38	test = ss.getc();
sun831011	0:02918d5d9986	39	pc.printf("%d\n", test-'S');
sun831011	0:02918d5d9986	40
sun831011	0:02918d5d9986	41	if (test == 'S' ){
sun831011	0:02918d5d9986	42	slavesyn();
sun831011	0:02918d5d9986	43	}
sun831011	0:02918d5d9986	44	else{
sun831011	0:02918d5d9986	45	if (test == 'T'){
sun831011	0:02918d5d9986	46	backtime();
sun831011	0:02918d5d9986	47	}
sun831011	0:02918d5d9986	48	else{
sun831011	0:02918d5d9986	49	pc.printf("\nSystem Error--1!!\n");
sun831011	0:02918d5d9986	50	}
sun831011	0:02918d5d9986	51	}
sun831011	0:02918d5d9986	52	}
sun831011	0:02918d5d9986	53	}
sun831011	0:02918d5d9986	54	}
sun831011	0:02918d5d9986	55
sun831011	0:02918d5d9986	56	void Timer0_init(void)
sun831011	0:02918d5d9986	57	{
sun831011	0:02918d5d9986	58	LPC_SC->PCLKSEL0 = 0x0066;
sun831011	0:02918d5d9986	59	LPC_TIM0->MR0 = 2880000000; // Match count for 100uS
sun831011	0:02918d5d9986	60	LPC_TIM0->MCR = 3; // Interrupt and Reset on Match
sun831011	0:02918d5d9986	61	LPC_TIM0->TCR = 1; // Enable Timer0
sun831011	0:02918d5d9986	62	NVIC_SetVector (TIMER0_IRQn, (uint32_t)&Timer0_IRQHandler);
sun831011	0:02918d5d9986	63	NVIC_EnableIRQ(TIMER0_IRQn);
sun831011	0:02918d5d9986	64	}
sun831011	0:02918d5d9986	65
sun831011	0:02918d5d9986	66
sun831011	0:02918d5d9986	67
sun831011	0:02918d5d9986	68	void Timer0_IRQHandler(void)
sun831011	0:02918d5d9986	69	{
sun831011	0:02918d5d9986	70	LPC_TIM0->IR = 1;
sun831011	0:02918d5d9986	71	LPC_TIM0->MR0 = 2880000000; // Match count for 100uS
sun831011	0:02918d5d9986	72	LPC_TIM0->TCR = 1; // Enable Timer0
sun831011	0:02918d5d9986	73	counter = counter + 1;
sun831011	0:02918d5d9986	74	}
sun831011	0:02918d5d9986	75
sun831011	0:02918d5d9986	76	void slavesyn(void)
sun831011	0:02918d5d9986	77	{
sun831011	0:02918d5d9986	78	pc.printf("in to fuc\n");
sun831011	0:02918d5d9986	79	t2 = counter * 4294967296 + LPC_TIM0->TC;
sun831011	0:02918d5d9986	80	pc.printf("t2 = %llu\n",t2);
sun831011	0:02918d5d9986	81
sun831011	0:02918d5d9986	82	t1 = receive();
sun831011	0:02918d5d9986	83	pc.printf("t1 = %llu\n",t1);
sun831011	0:02918d5d9986	84
sun831011	0:02918d5d9986	85	wait(2);
sun831011	0:02918d5d9986	86	t3 = counter * 4294967296 + LPC_TIM0->TC;
sun831011	0:02918d5d9986	87	ss.putc('S');
sun831011	0:02918d5d9986	88	pc.printf("t3 = %llu\n", t3);
sun831011	0:02918d5d9986	89
sun831011	0:02918d5d9986	90	t4 = receive();
sun831011	0:02918d5d9986	91	pc.printf("t4 = %llu\n",t4);
sun831011	0:02918d5d9986	92
sun831011	0:02918d5d9986	93
sun831011	0:02918d5d9986	94	t1 = assembletime(t1);
sun831011	0:02918d5d9986	95	t2 = assembletime(t2);
sun831011	0:02918d5d9986	96	t3 = assembletime(t3);
sun831011	0:02918d5d9986	97	t4 = assembletime(t4);
sun831011	0:02918d5d9986	98
sun831011	0:02918d5d9986	99	// pc.printf("t2-t1 = %ll\n t1-t2 = %ll \n", (lld)t2-t1,(lld)t1-t2);
sun831011	0:02918d5d9986	100
sun831011	0:02918d5d9986	101	/*
sun831011	0:02918d5d9986	102	offdri = (t2/4294967296 - t1/4294967296) 301000000000 + (t2%4294967296 - t1%4294967296);
sun831011	0:02918d5d9986	103	pc.printf("offderi = %llu\n",offdri);
sun831011	0:02918d5d9986	104
sun831011	0:02918d5d9986	105	delay = (t4/4294967296 - t3/4294967296) *4294967296 + (t4%4294967296 - t3%4294967296);
sun831011	0:02918d5d9986	106	pc.printf("delay = %llu\n",delay);
sun831011	0:02918d5d9986	107	*/
sun831011	0:02918d5d9986	108	//assume t2>t1 since slave reset first
sun831011	0:02918d5d9986	109	if(t3>t4){
sun831011	0:02918d5d9986	110	if ((t2-t1)>(t3-t4)){
sun831011	0:02918d5d9986	111	delay = ((t2-t1)-(t3-t4))/2;
sun831011	0:02918d5d9986	112	offdri = ((t2-t1)+(t3-t4))/2;
sun831011	0:02918d5d9986	113	}
sun831011	0:02918d5d9986	114	else{
sun831011	0:02918d5d9986	115	delay = ((t3-t4)-(t2-t1))/2;
sun831011	0:02918d5d9986	116	offdri = ((t2-t1)+(t3-t4))/2;
sun831011	0:02918d5d9986	117	}
sun831011	0:02918d5d9986	118	}
sun831011	0:02918d5d9986	119	else{ //t4>t3
sun831011	0:02918d5d9986	120	if ((t2-t1)<(t4-t3)){
sun831011	0:02918d5d9986	121	delay = ((t2-t1)+(t4-t3))/2;
sun831011	0:02918d5d9986	122	offdri = ((t4-t3)-(t2-t1))/2;
sun831011	0:02918d5d9986	123	}
sun831011	0:02918d5d9986	124	else{
sun831011	0:02918d5d9986	125	delay = ((t2-t1)+(t4-t3))/2;
sun831011	0:02918d5d9986	126	offdri = ((t2-t1)-(t4-t3))/2;
sun831011	0:02918d5d9986	127	}
sun831011	0:02918d5d9986	128	}
sun831011	0:02918d5d9986	129
sun831011	0:02918d5d9986	130	pc.printf("Delay = %llu\n",delay);
sun831011	0:02918d5d9986	131	pc.printf("offderi = %llu\n",offdri);
sun831011	0:02918d5d9986	132
sun831011	0:02918d5d9986	133
sun831011	0:02918d5d9986	134	}
sun831011	0:02918d5d9986	135
sun831011	0:02918d5d9986	136	long long receive(void){
sun831011	0:02918d5d9986	137	char x;
sun831011	0:02918d5d9986	138	long long y;
sun831011	0:02918d5d9986	139
sun831011	0:02918d5d9986	140	y=0;
sun831011	0:02918d5d9986	141	while(1){
sun831011	0:02918d5d9986	142	if(ss.readable()){
sun831011	0:02918d5d9986	143	x = ss.getc();
sun831011	0:02918d5d9986	144	if(x == 'E'){
sun831011	0:02918d5d9986	145	return y;
sun831011	0:02918d5d9986	146	}
sun831011	0:02918d5d9986	147	else{
sun831011	0:02918d5d9986	148	y = y*10 + (int)(x-48);
sun831011	0:02918d5d9986	149	}
sun831011	0:02918d5d9986	150	}
sun831011	0:02918d5d9986	151	}
sun831011	0:02918d5d9986	152	}
sun831011	0:02918d5d9986	153
sun831011	0:02918d5d9986	154	long long assembletime(long long t){
sun831011	0:02918d5d9986	155	long long temp;
sun831011	0:02918d5d9986	156
sun831011	0:02918d5d9986	157	temp = (t/4294967296)301000000000 + t%4294967296*10;
sun831011	0:02918d5d9986	158	return temp;
sun831011	0:02918d5d9986	159	}
sun831011	0:02918d5d9986	160
sun831011	0:02918d5d9986	161	void backtime(){
sun831011	0:02918d5d9986	162	long long t;
sun831011	0:02918d5d9986	163	long long temp;
sun831011	0:02918d5d9986	164	t = counter * 4294967296 + LPC_TIM0->TC;
sun831011	0:02918d5d9986	165	t = assembletime(t);
sun831011	0:02918d5d9986	166	t = t - offdri + delay;
sun831011	0:02918d5d9986	167	/*
sun831011	0:02918d5d9986	168	temp = t/30/1000000000;
sun831011	0:02918d5d9986	169	t = (t%30000000000)/10 + temp*4294967296;
sun831011	0:02918d5d9986	170	*/
sun831011	0:02918d5d9986	171	ss.printf("%llu",t);
sun831011	0:02918d5d9986	172	ss.putc('E');
sun831011	0:02918d5d9986	173	}
sun831011	0:02918d5d9986	174
sun831011	0:02918d5d9986	175	void toggle(){
sun831011	0:02918d5d9986	176	slaveOut = !slaveOut;
sun831011	0:02918d5d9986	177	}
sun831011	0:02918d5d9986	178
sun831011	0:02918d5d9986	179	long long sne(){
sun831011	0:02918d5d9986	180	char temp;
sun831011	0:02918d5d9986	181	char incode[100];
sun831011	0:02918d5d9986	182	int i=0;
sun831011	0:02918d5d9986	183	int j=0;
sun831011	0:02918d5d9986	184	long long sum = 0;
sun831011	0:02918d5d9986	185	while ((temp = pc.getc())!= 'E') { //getchar
sun831011	0:02918d5d9986	186	pc.printf("%c", temp);
sun831011	0:02918d5d9986	187	incode[i] = temp; //put the original char in incode
sun831011	0:02918d5d9986	188	i++;
sun831011	0:02918d5d9986	189	}
sun831011	0:02918d5d9986	190	pc.printf("E");
sun831011	0:02918d5d9986	191	for (j=1;j<i;j++){
sun831011	0:02918d5d9986	192	sum = (incode[j]-'0')+sum*10;
sun831011	0:02918d5d9986	193	}
sun831011	0:02918d5d9986	194	pc.printf("\n The time is %llu\n",sum);
sun831011	0:02918d5d9986	195	if (incode[0]=='S')
sun831011	0:02918d5d9986	196	return sum;
sun831011	0:02918d5d9986	197	else
sun831011	0:02918d5d9986	198	return 0;
sun831011	0:02918d5d9986	199	}
sun831011	0:02918d5d9986	200
sun831011	0:02918d5d9986	201

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	03 Dec 2010
Imports:	3
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

main.cpp@0:02918d5d9986, 2010-12-03 (annotated)

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