Diff: main.cpp

Revision:

0:3bd1cdc1f3f4

Child:

1:484feaf2da84

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Apr 04 00:42:58 2010 +0000
@@ -0,0 +1,182 @@
+//-----------------------------------------------------------------------------------------------------------
+// SD-Card Control Program
+//   (c)2010  Kenji Arai / JH1PJL
+//      http://www.page.sannet.ne.jp/kenjia/index.html   
+//          March 28th,2010  Started
+//          April 3rd,2010  
+//-----------------------------------------------------------------------------------------------------------
+// Function
+//      5 channeles ADC data records into a file which is located in SD-Card
+//      If USE_LCD = 1, data shows on a Text LCD
+//      If USE_RTC = 1, time stamp also writes in the file
+// Connection
+//      Analog input    PIN 15,16,17,19,20
+//      LCD             PIN 22,23,24,25,26,27,28
+//       -> CAUTION!! pin assignment is different
+//          with " http://mbed.org/projects/cookbook/wiki/TextLCD "
+//      RTC             PIN 3 needs to connect 3V Battery
+//       -> Please refer my program " RTC_w_COM" for time adjustment
+//          at " http://mbed.org/users/kenjiArai/programs/RTC_w_COM/5yi9a/ "
+//-----------------------------------------------------------------------------------------------------------
+#include "mbed.h"
+#include "TextLCD.h"
+#include "SDFileSystem.h"
+
+#define DEBUG   1           // 1= Shows progress on PC via USB ( virtual COM line)
+#define USE_LCD 1           // 1= Display the data on LCD
+#define USE_RTC 1           // 1= Use RTC (need 3V supply and time adjustment before use)
+
+#define NO_OF_SAMPLE 100   // Total recording length -> unit=sec
+#define TIM_INTVL 10        // Insert time stamp in the file every ?? sec
+
+DigitalOut myled(LED1);     // Indicate the sampling period
+
+#if USE_LCD
+TextLCD lcd(p22, p28, p27, p26, p25, p24, p23, 40, 2); // rs,rw,e,d0,d1,d2,d3,40char's x 2 lines
+#endif
+
+AnalogIn ain_G_X(p15);      // G Sensor
+AnalogIn ain_G_Y(p16);      // G Sensor
+AnalogIn ain_G_Z(p17);      // G Sensor
+AnalogIn ain_BAT(p19);      // Battery Volt
+AnalogIn ain_TEMP(p20);     // Temperature Sensor
+
+SDFileSystem sd(p5, p6, p7, p8, "sd");
+
+#if DEBUG
+Serial pc(USBTX, USBRX); 
+#endif
+
+int main() {
+    char buf[40];               // data buffer for text
+    int count;                  // count for number of record
+    float x,y,z,b,t;            // Analog data
+    #if USE_RTC
+    time_t seconds, old_sec;    // RTC data based on seconds
+    int i;
+    #endif
+    
+    // Open the file
+#if USE_RTC
+    seconds = time(NULL);
+    seconds %= 100000000;               // Adjust 8 charcters file name
+    sprintf(buf,"/sd/%d.txt",seconds);  // File name is defined based on time from 1970/1/1   
+    FILE *fp = fopen(buf, "w");         // Open "out.txt" on the local file system for writing
+    #if DEBUG
+    printf("\r\n %s \r\n", buf);        // File name on the screen
+    printf(" use RTC\r\n");
+    #endif
+#else
+    FILE *fp = fopen("/sd/out.txt", "w");// Open "out.txt" on the local file system for writing
+    #if DEBUG
+    printf("\r\n /sd/out.txt\r\n");     // File name on the screen
+    printf(" Not use RTC\r\n");
+    #endif
+#endif
+    if(fp == NULL) {
+    // File not open and stop
+        #if USE_LCD
+        lcd.printf("  Could not open file for write\n");
+        #endif
+        #if DEBUG
+        printf( "\r\n Could not open file for write\r\n");
+        #endif
+        while(1) ;
+    }
+    // Success file access 
+    fprintf(fp, "This is a test program for logging /by JH1PJL\r\n");
+    #if DEBUG
+    printf(     "This is a test program for logging /by JH1PJL\r\n");
+    printf("\r\nStart sampling\r\n");
+    #endif
+    #if USE_LCD
+    lcd.cls();
+    #endif
+    
+    count = 0;              // Initialze counter
+#if USE_RTC
+    seconds = time(NULL);   // Put time stamp in the file
+    old_sec = seconds; 
+    strftime(buf,40, "Time:%I:%M:%S %p, %Y/%m/%d\r\n", localtime(&seconds));
+    fprintf(fp,buf);
+    #if DEBUG
+    printf("  %s \r\n", buf);
+    #endif
+#endif
+    while(1) {
+        // check time interval (1sec)
+        #if USE_RTC
+        myled = 1;
+        wait(0.5);
+        myled = 0;
+        while ((seconds = time(NULL)) == old_sec) ;    // Wait 1 sec for loop
+        old_sec = seconds;
+        #else
+        myled = 1;
+        wait(0.5);
+        myled = 0;
+        wait(0.5);   
+        #endif
+        // Get analog data from each port
+        x=ain_G_X.read();
+        y=ain_G_Y.read();
+        z=ain_G_Z.read();
+        b=ain_BAT.read();
+        t=ain_TEMP.read();
+        // Write data into the file
+        sprintf(buf, "G-Sen, %f, %f, %f  \r\n", x, y, z);
+        fprintf(fp,buf);
+        #if USE_LCD
+        lcd.locate(0, 0);   // 1st line top
+        lcd.printf(buf);
+        #endif
+        #if DEBUG
+        printf(" %s", buf);
+        #endif    
+        sprintf(buf, "VB, %f, T, %f  \r\n", b, t);
+        fprintf(fp,buf);
+        #if USE_LCD
+        lcd.locate(0, 1);   // 2nd line top
+        lcd.printf(buf);
+        #endif
+        #if DEBUG
+        printf(" %s", buf);
+        #endif 
+        // if reach to expected data number then finsh
+        if (++count > NO_OF_SAMPLE){
+            break;
+        }
+        // Set time satmp
+        #if USE_RTC
+        i = count / TIM_INTVL;
+        if (count == i * TIM_INTVL){
+            //seconds = time(NULL);     // this line is wrong! BUG  
+            strftime(buf,40, "Time:%I:%M:%S %p, %Y/%m/%d\r\n", localtime(&seconds));
+            fprintf(fp, buf);
+            #if DEBUG
+            printf(" %s", buf);
+            #endif 
+        }
+        #endif
+        #if DEBUG
+        printf("Sampling #%d/end=%d\r\n", count, NO_OF_SAMPLE);
+        #endif           
+    }
+    // Set time satmp
+#if USE_RTC
+    sprintf(buf,"Sampling numbers: %d\r\n", count-1);
+    fprintf(fp, buf);
+    seconds = time(NULL);  
+    strftime(buf,40, "Time:%I:%M:%S %p, %Y/%m/%d\r\n", localtime(&seconds));
+    fprintf(fp, buf);
+    #if DEBUG
+    printf(" %s", buf);
+    #endif
+#endif 
+    fclose(fp);
+    // for debug
+    #if DEBUG
+    printf("\r\nFinished sampling\r\n");
+    #endif 
+}
+ 
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