cdms sd card and rtc working

Dependencies:   SDFileSystem mbed-src mbed

Files at this revision

API Documentation at this revision

Comitter:
sureshsusurla
Date:
Fri Mar 13 20:04:05 2015 +0000
Commit message:
cdms sd card and rtc working

Changed in this revision

SDFileSystem.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed-src.lib Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file
diff -r 000000000000 -r 2e3d21e95c97 SDFileSystem.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SDFileSystem.lib	Fri Mar 13 20:04:05 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/SDFileSystem/#c8f66dc765d4
diff -r 000000000000 -r 2e3d21e95c97 main.cpp
--- /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);
+    
+}
diff -r 000000000000 -r 2e3d21e95c97 mbed-src.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-src.lib	Fri Mar 13 20:04:05 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed-src/#4dac56e9ae44
diff -r 000000000000 -r 2e3d21e95c97 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Mar 13 20:04:05 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/63cdd78b2dc1
\ No newline at end of file