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Diff: main.cpp
- Revision:
- 0:53009704d289
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Fri Dec 03 22:20:14 2010 +0000 @@ -0,0 +1,163 @@ +#include "mbed.h" + +Serial pc(USBTX, USBRX); // tx, rx +Serial ss(p9, p10); //tx rx +Serial ss_sne(p13, p14); //tx rx + +DigitalOut myled1(LED1); +DigitalOut myled2(LED2); + +DigitalOut masterOut(p23); +InterruptIn masterIn(p22); +InterruptIn slaveIn(p21); + +unsigned long counter = 0; +int divider = 1; +int pro_flag = 0; +int task_flag = 0; +unsigned long long t1, t2, t3, t4; +typedef struct timeval { + unsigned long tv_sec; + unsigned long tv_usec; +} timeval; + +void Timer0_init(void); +void Timer0_IRQHandler(void); +void Sync_protocol(void); +void getTime(struct timeval *tv); +int runAtTime (void (*fptr)(void), struct timeval tv); +void toggle(void); +void runAtTrigger( ); +void reportToggle(struct timeval *tv); +long long sne(void); + +int main( ) +{ + struct timeval t_run; + long long t_run_m; + t_run.tv_sec = 1000; + t_run.tv_usec = 0; + wait(1); +// masterIn.rise(&runAtTrigger); +// masterIn.fall(&runAtTrigger); +// slaveIn.rise(&runAtTrigger); +// slaveIn.fall(&runAtTrigger); + Timer0_init( ); + while (1) + { /* + if (pc.readable( )){ + t_run_m = sne( ); + t_run.tv_sec = t_run_m/1000000; + t_run.tv_usec = t_run_m%1000000; + pc.printf("%lu\n",t_run.tv_sec); + pc.printf("%lu\n",t_run.tv_usec); + } */ +// if (!task_flag) +// task_flag = runAtTime (&toggle, t_run); + if (pro_flag == 1){ + Sync_protocol( ); + pro_flag = 0; + } + } +} + +void Timer0_init(void) +{ + LPC_SC->PCLKSEL0 = 0x0066; + LPC_SC->PCONP |= 1<<1; // Timer0 Power On + LPC_TIM0->MR0 = 2880000000; // Match count for 30S + LPC_TIM0->MCR = 3; // Interrupt and Reset on Match + LPC_TIM0->TCR = 1; // Enable Timer0 + NVIC_SetVector (TIMER0_IRQn, (uint32_t)&Timer0_IRQHandler); + NVIC_EnableIRQ(TIMER0_IRQn); +} + +void Timer0_IRQHandler(void) +{ + LPC_TIM0->IR = 1; + LPC_TIM0->MR0 = 2880000000; // Match count for 30S + LPC_TIM0->TCR = 1; // Enable Timer0 + counter = counter + 1; + if ( counter % divider ==0 ) + pro_flag = 1; +} + +void Sync_protocol(void) +{ + char x; + t1 = counter * 4294967296 + LPC_TIM0->TC; + ss.putc('S'); + pc.printf("t1 = %llu\n", t1); + ss.printf("%llu", t1); + ss.putc('E'); + while (1){ + if (ss.readable( )){ + x = ss.getc( ); + t4 = counter * 4294967296 + LPC_TIM0->TC; + ss.printf("%llu", t4); + ss.putc('E'); + pc.printf("%c\n", x); + pc.printf("t4 = %llu\n", t4); + break; + } + } +} + +void getTime(struct timeval *tv){ + unsigned long ns, hs; + ns = LPC_TIM0->TC; + hs = counter; + tv->tv_sec = hs*30 + ns/100000000; + tv->tv_usec = (ns%100000000)/100; +} +/* +int runAtTime (void (*fptr)(void), struct timeval tv){ + struct timeval current_t; + getTime(¤t_t); + if (tv.tv_sec <= current_t.tv_sec && tv.tv_usec <= current_t.tv_usec){ + (*fptr) ( ); + return 1; + } + else + return 0; +} + +void toggle(void){ + masterOut = !masterOut; +} + +void runAtTrigger(void){ + struct timeval response_t; + reportToggle(&response_t); +} + +void reportToggle(struct timeval *tv) +{ + getTime(tv); + pc.printf("%u\n", tv->tv_sec); + pc.printf("%u\n", tv->tv_usec); + myled2 = !myled2; +} + +long long sne( ){ + char temp; + char incode[100]; + int i=0; + int j=0; + long long sum = 0; + while ((temp = pc.getc())!= 'E') { //getchar + incode[i] = temp; //put the original char in incode + i++; + } + for (j=1;j<i;j++){ + sum = (incode[j]-'0')+sum*10; + } + if (incode[0]=='S'){ + ss_sne.printf("%llu", sum); + ss_sne.putc('E'); + return sum; + } + else + return 0; +} +*/ \ No newline at end of file