Revision 0:d5c7badbe8ad, committed 2010-12-04

Comitter:

guruimage

Date:

Sat Dec 04 06:55:01 2010 +0000

Commit message:

HW3B part2 master

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Dec 04 06:55:01 2010 +0000
@@ -0,0 +1,175 @@
+#include "mbed.h"
+ LocalFileSystem local("local"); 
+void SetupTimer1(void);
+void getTime(struct timeval *tv) ;
+void itoa( unsigned long long int value, char *str);
+void sync(void);
+void Timer1_IRQHandler(void);
+void Timer2_IRQHandler(void);
+void setupTrigger(void);
+void runAtTrigger(void(*trigFunc)(struct timeval *tv));
+//void (*mytrigFunc)(struct timeval *tv);
+void trigFunc(struct timeval *tv);
+void pinToggle(void);
+void reportToggle(unsigned long long int time);
+DigitalOut toggle(p18);
+
+Serial device(p9,p10);
+Serial command(p13,p14);
+Serial pc(USBTX, USBRX); // tx, rx
+DigitalOut myled1(LED1);
+DigitalOut myled2(LED2);
+DigitalOut myled3(LED3);
+DigitalOut myled4(LED4);
+int timeNum = 0;
+unsigned long long int t2=0;
+unsigned long long int t3=0;
+int secCom = 0;
+int usecCom = 0;
+int usecT1=0;
+int usecT4=0;
+long long int tc;
+int x=0;
+char buffTx2[40];
+char buffTx1[40];
+struct timeval
+{
+  unsigned long long int tv_sec;        /* Seconds. */
+  unsigned long long int tv_usec;    /* Microseconds. */
+};
+timeval globalTime;
+
+
+int main() {   
+wait(0.001);  
+for(int i =0;i<40;i++){
+         buffTx1[i]=NULL;
+         buffTx2[i]=NULL;
+    }         
+           SetupTimer1();
+           setupTrigger(); 
+           device.attach(&sync,Serial::RxIrq);
+           
+           for(int j=0;j<4;j++){
+            command.putc('8');
+           }  
+}
+
+void sync(void){
+    
+ if(device.getc()=='s'){
+    t2=(unsigned long long int) (LPC_TIM1->TC+4294967296*timeNum);
+    
+    
+    
+    device.putc('d');
+    t3=(unsigned long long int) (LPC_TIM1->TC+4294967296*timeNum);
+    device.putc('m');
+    itoa(t2,buffTx1);
+    pc.printf("\r\nt2 %ul\r\n",t2);
+        
+        for(int i = 0; (buffTx1[i]!=NULL);i++){
+            device.putc(buffTx1[i]);
+            myled1=!myled1;
+            pc.printf("%c",buffTx1[i]);          
+           
+        } 
+    device.putc('f');
+    itoa(t3,buffTx2);
+     pc.printf("\r\nt3 %ul timeNum %u\r\n",t3,timeNum);
+       
+        for(int i = 0; (buffTx2[i]!=NULL);i++){
+            device.putc(buffTx2[i]);
+             myled2=!myled2;
+            pc.printf("%c",buffTx2[i]);
+           
+           
+    }
+    device.putc('n');
+     myled4=!myled4;
+        
+ }        
+    
+}
+
+void SetupTimer1(void)
+{
+   LPC_SC->PCONP |= 1 << 2;     // Power on Timer`
+   LPC_SC->PCLKSEL0 |= 1 << 4;
+   LPC_TIM1->TCR = 0x2;         // Reset and set to timer mode
+   LPC_TIM1->CTCR = 0x0;
+   LPC_TIM1->PR = 0;            // No prescale
+   LPC_TIM1->MR0 = 0xFFFFFFFF;        // Match count for 100mS
+   LPC_TIM1->MCR = 3;           // Interrupt and Reset on Match
+   LPC_TIM1->TCR = 1;           // Enable Timer
+   
+   // Enable the ISR vector
+   NVIC_SetVector (TIMER1_IRQn, (uint32_t)&Timer1_IRQHandler);
+   NVIC_EnableIRQ(TIMER1_IRQn);
+}
+void Timer1_IRQHandler(void)
+{
+  timeNum++;
+  SetupTimer1();
+  LPC_TIM1->IR = 1;
+}
+
+void getTime(struct timeval *tv) {    
+        tv->tv_sec=(unsigned long long)((LPC_TIM1->TC+4294967296*timeNum)/96000000);
+        tv->tv_usec=(unsigned long long)((LPC_TIM1->TC+4294967296*timeNum)/96000); 
+}
+void setupTrigger(void){
+LPC_SC->PCONP |= 1 << 22; //power on timer 2;
+LPC_PINCON->PINSEL0 |= 0x00000300;//use capture cap2.0 (pin 30)
+LPC_PINCON->PINMODE0 |=0x00000100;//set pin mode of pin30(p0.04) as repeter
+LPC_TIM2->TCR = 0x2;         // Reset and set to timer mode
+LPC_TIM2->CTCR = 0x00000003;       //increment TC on rising and falling edge
+LPC_TIM2->CCR = 0x00000007;     //trigger interrupt on rising and falling edge
+LPC_TIM2->TCR = 1;           // Enable Timer
+
+ // Enable the ISR vector
+ NVIC_SetVector (TIMER2_IRQn, (uint32_t)&Timer2_IRQHandler);
+ NVIC_EnableIRQ(TIMER2_IRQn);
+ }
+void Timer2_IRQHandler(void)
+{
+     //myled2=!myled2;
+     LPC_TIM2->IR = 63;
+     runAtTrigger(trigFunc);
+}
+void runAtTrigger(void (*trigFunc) (struct timeval *tv)){
+        
+        (*trigFunc)(&globalTime);
+}
+void trigFunc(struct timeval *tv){
+    getTime(tv);
+    myled3=!myled3;
+    reportToggle(tv->tv_usec);
+    printf("time is %llu!\r\n",tv->tv_usec);
+    
+}
+
+void itoa( unsigned long long int value, char *str)
+{   
+   int i,j;
+   char temp[30];
+   for(i=0; value > 0; i++){    
+       str[i] = value%10+'0';
+       value=value/10;
+    }
+    for(j=0;i>=0;j++,i--){
+        temp[j]=str[i-1];
+    }
+    for(i=0;i<j;i++){
+        str[i]=temp[i];
+    }   
+}
+void pinToggle(void){
+    toggle=!toggle;
+}
+
+void reportToggle(unsigned long long int time){
+     FILE *fp = fopen("/local/reportToggle.txt", "w");       
+     fprintf(fp,"%llu\r\n", time);        
+     fclose(fp);
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sat Dec 04 06:55:01 2010 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/e2ac27c8e93e