Revision 0:c16269a9525f, committed 2010-12-04

Comitter:

guruimage

Date:

Sat Dec 04 06:52:35 2010 +0000

Commit message:

HW3B getTime with synchronization on master

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Dec 04 06:52:35 2010 +0000
@@ -0,0 +1,117 @@
+#include "mbed.h"
+
+void SetupTimer1(void);
+void getTime(struct timeval *tv) ;
+void itoa( unsigned long long int value, char *str);
+void sync(void);
+void Timer1_IRQHandler(void);
+Serial device(p9,p10);
+Serial pc(USBTX, USBRX); // tx, rx
+DigitalOut myled1(LED1);
+DigitalOut myled2(LED2);
+DigitalOut myled3(LED3);
+DigitalOut myled4(LED4);
+int timeNum = 0;
+unsigned long long  t2=0;
+unsigned long long  t3=0;
+int secCom = 0;
+int usecCom = 0;
+int usecT1=0;
+int usecT4=0;
+long long tc;
+int x=0;
+char buffTx2[40];
+char buffTx1[40];
+struct timeval
+{
+  unsigned long long tv_sec;        /* Seconds. */
+  unsigned long long tv_usec;    /* Microseconds. */
+};
+int main() {   
+wait(0.001);  
+for(int i =0;i<40;i++){
+         buffTx1[i]=NULL;
+         buffTx2[i]=NULL;
+    }         
+           SetupTimer1();   
+           device.attach(&sync);   
+}
+
+void sync(void){
+    
+ if(device.getc()=='s'){
+    t2=(unsigned long long int) (LPC_TIM1->TC+4294967296*timeNum);
+    pc.printf("s receviced!\r\n");
+    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]);
+            pc.printf("%c",buffTx1[i]);
+           // buffTx1[i]=NULL;
+           
+        } 
+    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]);
+            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 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];
+    }
+   
+   
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sat Dec 04 06:52:35 2010 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/e2ac27c8e93e