Diff: main.cpp

Revision:

0:558646c716d0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Sep 03 17:06:30 2011 +0000
@@ -0,0 +1,279 @@
+//////////////////////////////////////
+// White Wizard Board (PAT.PEND)    //
+// Save IR data to microSD card.    //
+//                                  //
+// Nest Egg Inc. 2011/7/9           //
+//                                  //
+//////////////////////////////////////
+#include "mbed.h"
+#include "SDFileSystem.h"
+
+//#define SDch        0x05
+#define MAXdatanum  1000
+#define TimeLimit   3000
+#define pul38khz       0.0263
+#define pul38k_ON      0.0131
+#define pul38k_OFF     0.0
+//#define TEST 1
+
+//prototype
+void SDsave(int[], int[], int);
+void send_pulse(int, int);
+
+SDFileSystem sd(p5, p6, p7, p8, "sd");
+
+//DigitalIn IR(p9);
+
+InterruptIn IR(p9);
+
+DigitalOut myled1(LED1);
+DigitalOut myled2(LED2);
+DigitalOut myled3(LED3);
+DigitalOut myled4(LED4);
+
+PwmOut Pulse_pin(p21);
+
+int trigger = 0;
+int saved = 0;
+int datanum = 0;
+int i = 0;
+int    IRdata[MAXdatanum];
+int     pulsetime[MAXdatanum];
+
+
+void triggerOn() {
+    trigger = 1;
+    IRdata[i] = 0;
+    pulsetime[i]=0;
+    
+    if(i < MAXdatanum){
+        while(IR==0 && pulsetime[i]<=15000){
+            ++pulsetime[i];
+            wait_us(50);
+            
+        }
+        
+        if(pulsetime[i]>=15000){
+            printf(" pulsetime[i] >= TimeLimit !\n");
+            datanum = i;
+            i = MAXdatanum;
+        }
+        
+        ++i;
+    }
+}
+
+
+void triggerOff() {
+    trigger = 0;
+    pulsetime[i]=0;
+    IRdata[i] = 1;    
+    
+    if(i < MAXdatanum){
+        while(IR==1 && pulsetime[i]<=15000){
+            ++pulsetime[i];
+            wait_us(50);
+            
+        }
+        
+        if(pulsetime[i]>=15000){
+            printf(" pulsetime[i] >= TimeLimit !\n");
+            datanum = i;
+            i = MAXdatanum;
+        }
+        
+        ++i;
+    }
+}
+
+
+int main(){
+    //Buffer is 100 pulses.
+    //int    IRdata[MAXdatanum];
+    //int     pulsetime[MAXdatanum];
+    //int     i = 0;
+    
+    myled1 = 0;
+    myled2 = 0;
+    myled3 = 0;
+    myled4 = 0;
+    
+    myled1 = 1;
+    
+    IR.fall(&triggerOn);
+    IR.rise(&triggerOff);
+    
+    printf("start!\n");
+    
+    while(1){
+        IR.fall(&triggerOn);
+        IR.rise(&triggerOff);
+        
+        if(i >= MAXdatanum && i!= (MAXdatanum + 100)){
+            printf("Save start!\n");
+            SDsave(IRdata, pulsetime,datanum);
+            i = MAXdatanum + 100;
+            printf("Finish!");
+        }
+    }
+#ifdef TEST
+
+#else
+    while(1){
+    
+        if(trigger == 0 && saved == 0){   //no signal
+            ;
+        }else if(trigger == 1 && saved == 0){ //"save" start
+            //IR.fall(NULL);
+            for(i = 0; i < MAXdatanum; ++i){
+                pulsetime[i] = 0;   //init
+                
+                if(IR == 1){
+                    //check signal type
+                    IRdata[i] = 1;
+                    
+                    while(IR==1 && pulsetime[i]<=TimeLimit){  //while IR = 1
+                        //check time
+                        ++pulsetime[i];
+                        wait_us(50);    //count by 100 usec
+                    }
+                
+                
+                }else{
+                    //check signal type
+                    IRdata[i] = 0;
+                    
+                    while(IR==0 && pulsetime[i]<=TimeLimit){  //while IR = 0
+                        //check time
+                        ++pulsetime[i];
+                        wait_us(50);    //count by 100 usec
+                        
+                    }
+                    
+                }
+                
+                datanum = i;
+                            
+                if( pulsetime[i] >= TimeLimit){
+                    printf(" pulsetime[i] >= TimeLimit !\n");
+                    i = MAXdatanum;
+                }
+                
+            }
+            
+            SDsave(IRdata, pulsetime,datanum);   
+        }else{
+            ;
+        }
+    }
+#endif
+    
+#ifdef TEST    
+    IRdata[0] = 1;
+    pulsetime[0] = 555;
+    IRdata[1] = 0;
+    pulsetime[1] = 777;
+    SDsave(IRdata, pulsetime,2);
+#endif
+
+    while(1){
+    }
+    
+}
+
+void SDsave(int IRdata1[], int pulsetime1[], int datanum1){
+
+    int j = 0;
+    
+    //channel No must be A4 A3 A2 A1
+    //sd.SetCh(SDch);    //channel No 0101(=0x05), depend on your SPI module setting. (1:High 0:Low)
+
+    printf("Start to save data\n");   
+    myled2 = 1;
+        
+    FILE *fp = fopen("/sd/IRDATA.csv", "w");
+    if(fp == NULL) {
+        error("Could not open file for write\n");
+        myled3 = 1;
+    }
+    
+#ifdef TEST
+    fprintf(fp, "%d\n",datanum1);
+    fprintf(fp, "%d,%d,\n",IRdata1[0], pulsetime1[0]);
+    fprintf(fp, "%d,%d,\n",IRdata1[1], pulsetime1[1]);
+#else
+
+    fprintf(fp, "%d\n",datanum1);
+    for(j=0;j<datanum1;++j){
+        fprintf(fp, "%d,%d,\n",IRdata1[j], pulsetime1[j]);
+    }
+#endif
+
+    
+    fclose(fp);
+    saved = 1;
+    printf("Saved!\n");
+    
+    //sd.SetCh(0x00);    //not select
+    
+//#ifdef TEST
+    wait(1);
+    //sd.SetCh(SDch);    //channel No 0101(=0x05), depend on your SPI module setting. (1:High 0:Low)
+    printf("again\n");
+    int pHL = 0;    
+    int t = 0; 
+    FILE *fp1 = fopen("/sd/IRdata.csv", "r");
+    
+    datanum = 0;
+    
+    fscanf(fp1, "%d\n",&datanum1);    //read from SD
+    printf("datanum, %d\n",datanum1);
+    
+    for(j=0;j<datanum1;++j){
+        fscanf(fp1, "%d,%d,\n", &pHL, &t);    //read from SD
+        
+        send_pulse(pHL,t);
+        
+        //printf("ans, %d,%d,\n", pHL, t);
+    }
+    
+    fclose(fp1);
+    printf("close fp1\n");
+    
+//#endif
+     
+    myled3 = 1;
+    myled4 = 1;
+}   
+
+
+void send_pulse(int pHL, int t){
+
+    int k = 0;
+    int err = 0;
+    
+    Pulse_pin.period(pul38khz);
+    
+    if(pHL == 0){
+        //38kHz pulse on
+        Pulse_pin.pulsewidth(pul38k_ON);
+        
+    }else if(pHL == 1){
+        //38kHz pulse off
+        Pulse_pin.pulsewidth(pul38k_OFF);
+        
+    }else{
+        Pulse_pin.pulsewidth(pul38k_OFF);
+        printf("\n\n-----Data format is incorrect!!-----\n pHL = %d, t = %d \n", pHL, t);
+        err = 1;
+        
+    }
+    
+    if(err == 0){
+        for(k = 0; k < t; ++k){
+            wait_us(50);
+        }
+    }
+    
+}
+