Diff: main.cpp

Revision:

0:2e3d21e95c97

Child:

1:59da9694681e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Mar 13 20:04:05 2015 +0000
@@ -0,0 +1,207 @@
+#include "mbed.h"
+#include "SDFileSystem.h"
+
+/************************Include the required Header files for the code *******************************/
+#include "mbed.h"
+#include "string.h"
+
+/********************************** Function Prototypes declaration ***********************************/
+int FUNC_CDMS_hex2int(int);                     // Need to convert the RTC time values to integers
+void FUNC_CDMS_Gettime(void);                   // Function to get the time values from RTC registers 
+void FUNC_CDMS_init_values(void);               // Function to initialize the registers in the RTC
+
+
+/***************** Configure the SPI1 of the CDMS uc as the data bus for the RTC***********************/
+SPI spi(PTE1,PTE3, PTE2);                       // mosi, miso, sclk
+DigitalOut cs(PTE29);                           // PTE29 is used for chip select
+
+char ch;
+SDFileSystem sd(PTE1, PTE3, PTE2, PTE22, "sd"); // the pinout on the mbed Cool Components workshop board
+Serial pc(USBTX, USBRX); // tx, rx
+char time_stamp[15];
+
+/***********************Initialization function of the RTC********************************************/ 
+void FUNC_CDMS_init_values(void)
+{
+    cs=0;
+    spi.format(8,3);                            // Set the data bit with to be of 8 bits, 
+                                                // data tx mode is 3 
+    spi.frequency(1000000);                     // Set Data rate to be 1 MHz
+    
+    cs = 0;                                     // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x80);                            // Send the address of the Seconds register 0x80
+    spi.write(0x00);                            // Set seconds value to 0
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x81);                            // Send the address of the Minutes register 0x81
+    spi.write(0x00);                            // Set minutes value to 0
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x82);                            // Send the address of the Hours register 0x82
+    spi.write(0x00);                            // Set hours value to 0
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x83);                            // Send the address of the Day register 0x83
+    spi.write(0x01);                            // Set the day to 01
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x84);                            // Send the address of the date register 0x84
+    spi.write(0x01);                            // Set date of the month to 01
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x85);                            // Send the address of the Month register 0x80
+    spi.write(0x01);                            // Set month to 01
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x86);                            // Send the address of the year register 0x80
+    spi.write(0x00);                            // Set year to 00(2000)
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+}// End of INIT Function
+
+
+/*********************************Function to read the RTC registers*********************************/   
+void FUNC_CDMS_Gettime()
+{
+
+    spi.format(8,3);                            // Set the data bit with to be of 8 bits, 
+                                                // data tx mode is 3 
+    spi.frequency(1000000);                     // Set Data rate to be 1 MHz
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x00);                            // Sending address of seconds register
+    int seconds = spi.write(0x00);              // Read the value by sending dummy byte
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x01);                            // Sending address of Minutes register
+    int minutes =spi.write(0x01);               // Read the value by sending dummy byte
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x02);                            // Sending address of hours register
+    int hours =spi.write(0x01);                 // Read the value by sending dummy byte
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x03);                            // Sending address of day register
+    int day =spi.write(0x01);                   // Read the value by sending dummy byte
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x04);                            // Sending address of date register
+    int date =spi.write(0x01);                  // Read the value by sending dummy byte
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x05);                            // Sending address of month register
+    int month =spi.write(0x01);                 // Read the value by sending dummy byte
+    cs=1;                                       // Set chip select pin to be 1: DeActivate RTC chip
+    
+    cs=0;                                       // Set chip select pin to be 0: Activate RTC chip
+    spi.write(0x06);                            // Sending address of year register
+    int year =spi.write(0x01);                  // Read the value by sending dummy byte
+    cs = 1;                                     // Set chip select pin to be 1: DeActivate RTC chip
+    
+    // RTC sends in BCD format.. SO we convert the values generated by RTC to integers
+    year = FUNC_CDMS_hex2int(year);             
+    month = FUNC_CDMS_hex2int(month);
+    date = FUNC_CDMS_hex2int(date);
+    day = FUNC_CDMS_hex2int(day);
+    hours = FUNC_CDMS_hex2int(hours);
+    minutes = FUNC_CDMS_hex2int(minutes);
+    seconds = FUNC_CDMS_hex2int(seconds);
+    
+    // Print the obtained Time stamp
+    //printf("The time is :%d %d %d %d %d %d %d \n\r",seconds,minutes,hours,day,date,month,year);
+    sprintf(time_stamp,"%02d%02d%02d%02d%02d%02d",year,month,date,hours,minutes,seconds);
+    printf(" \n\r Received HK data from BAE");
+    printf("\n HK_data stored in %s.txt",time_stamp);
+    //puts(time_stamp);
+    //printf(".txt");
+}//End of Read Function
+
+/**************************Function to convert Hex values to Int values*****************************/
+int FUNC_CDMS_hex2int(int a)
+{
+a=(a/16)*10+(a%16); //function to convert hex type to int type
+return a;
+}// End of convert function
+
+
+/******************************************END OF RTC CODE ****************************************/
+
+char count = 10;
+void store_data()
+{
+    FUNC_CDMS_Gettime();
+    
+    char hk_data[25];
+    count++;
+    strcpy(hk_data,"hk_Data ");
+    strcat(hk_data,"!@@#");
+    hk_data[10] = count;
+    //storedata(hk_data);
+    mkdir("/sd/hk", 0777);
+    char add[20];
+    strcpy(add,"/sd/hk/");
+    strcat(add,time_stamp);
+    strcat(add,".txt");
+    
+    FILE *fp = fopen(add, "w");
+    if(fp == NULL) {
+        error("Could not open file for write\n");
+    }
+    else
+    {
+       
+    fprintf(fp, "%s ",hk_data);
+    fclose(fp);
+    printf("\n File stored in SD card\n");
+    //printf("\n Reading from the file .... \n Data is %s\n",hk_data);
+    
+    }
+}
+
+
+
+//void create_file()
+//{
+    
+    /*
+    fprintf(fp, "Hello fun SD Card World!\n");
+    fclose(fp); 
+    
+    fp = fopen("/sd/mydir/sdtest.txt", "r");
+    if(fp == NULL) {
+        error("Could not open file for write\n");
+    }
+    //fprintf(fp, "Hello fun SD Card World!");
+   // fprintf("The contents of %s file are :\n", "/sd/mydir/sdtest.txt");
+    while( ( ch = fgetc(fp) ) != '\n' )
+    {
+      pc.printf("%c",ch);
+      }
+    //fprintf(fp);
+    fclose(fp); 
+ 
+    printf("Jai Mata Di..Goodbye World!\n");*/
+//}
+    
+Ticker t;
+
+int main() 
+{
+    printf("IITMSAT - CDMS\n");   
+    
+    FUNC_CDMS_init_values();  
+    t.attach(&store_data, 20.0);
+    while(1);
+    
+}