Diff: cdms_rtc.h

Revision:

224:3ac1f91e0ebc

Parent:

209:63e9c8f8b5d2

Child:

240:946a9342a95f

Child:

248:407ab7e337cd

diff -r f4acf895b598 -r 3ac1f91e0ebc cdms_rtc.h
--- a/cdms_rtc.h	Sat Jul 02 15:28:21 2016 +0000
+++ b/cdms_rtc.h	Mon Jul 04 14:31:30 2016 +0000
@@ -1,123 +1,147 @@
+
 void FCTN_CDMS_INIT_RTC()
-{
+{   
+    wait_ms(4000);
     SPI_mutex.lock();
     gCS_RTC=1;
     spi.format(8,0);
     spi.frequency(1000000);
-    //clearing the halt bit
+    
+    //Kick starting the oscillator 
+    gCS_RTC=0;
+    spi.write(0x81); //register address with write flag
+    spi.write(0x80);//enabling stop bit in the seconds register
+    gCS_RTC=1;
+        
+    //clearing the halt bit 
     gCS_RTC=1;
     gCS_RTC=0;
     spi.write(0x8C);
     spi.write(0x00);
-
-    //clearing the OF bit
-    gCS_RTC=1;
+    gCS_RTC=1; 
+     
+    //clearing the OF bit 
     gCS_RTC=0;
     spi.write(0x8F);
     spi.write(0x00);
-
+    gCS_RTC=1; 
+     
     //century bits
-    gCS_RTC=1;
     gCS_RTC=0;
     spi.write(0x80|0x03);
     spi.write(0x00);
+    gCS_RTC=1;
 
-    //Kick starting the oscillator
-    gCS_RTC=1;
-    gCS_RTC=0;
-    spi.write(0x81); //register address with write flag
-    spi.write(0x80); //enabling stop bit in the seconds register
-
-    gCS_RTC=1;
+    
     gCS_RTC=0;
     spi.write(0x81);
-    spi.write(0x00); //disabling the stop bit to restart the oscillator
-
-
+    spi.write(0x00);//disabling the stop bit to restart the oscillator 
     gCS_RTC=1;
+    
     gCS_RTC=0;
-    spi.write(0x80);
+    spi.write(0x80); 
     spi.write(0x01); // set milliseconds value to 00
     gCS_RTC=1;
-
+ 
     gCS_RTC=0;
-    spi.write(0x81);
+    spi.write(0x81); 
     spi.write(0x01); //set seconds value to 00
     gCS_RTC=1;
-
+ 
     gCS_RTC=0;
-    spi.write(0x82);
+    spi.write(0x82); 
     spi.write(0x01);//set minutes value to 00
     gCS_RTC=1;
-
+ 
     gCS_RTC=0;
-    spi.write(0x83);
+    spi.write(0x83); 
     spi.write(0x23); //set the hours to 01
     gCS_RTC=1;
-
+    
     gCS_RTC=0;
-    spi.write(0x84);
+    spi.write(0x84); 
     spi.write(0x01); //set day of the week to 01
     gCS_RTC=1;
-
+    
     gCS_RTC=0;
-    spi.write(0x85);
+    spi.write(0x85); 
     spi.write(0x31); //set date of the month to 01
     gCS_RTC=1;
-
+    
     gCS_RTC=0;
-    spi.write(0x86);
+    spi.write(0x86); 
     spi.write(0x12); //set month to 01
     gCS_RTC=1;
-
+    
     gCS_RTC=0;
-    spi.write(0x87);
+    spi.write(0x87); 
     spi.write(0x01); //set year to 00(2000)
     gCS_RTC=1;
-    gPC.puts("\r\nrtc initalised\r\n");
+    gPC.puts("\n\r rtc initalised \n");
     SPI_mutex.unlock();
 }
-
+ 
 uint64_t FCTN_CDMS_RD_RTC()
-{
-    SPI_mutex.lock();
+{   
+    SPI_mutex.lock(); 
     uint8_t response;
-
-    gCS_RTC=1;
+    uint64_t time = 0;
+    
+    gCS_RTC = 0;
+    spi.write(0x0F);
+    response = spi.write(0x00);
+    //gPC.printf("0x%02X",response);
+    gCS_RTC = 1;
+    
     gCS_RTC=0;
-    spi.write(0x0F);
-    response = (spi.write(0x00))&0x04;
+    spi.write(0x00); //reading milliseconds register
+    response = spi.write(0x00); // read the value by sending dummy byte
+    uint8_t centiseconds =  (uint8_t(response&0xF0)>>4)*10+uint8_t(response&0x0F)*1;
     
     gCS_RTC=1;
     gCS_RTC=0;
-    spi.write(0x00);                //reading centiseconds register
-    response = spi.write(0x00);     // read the value by sending dummy byte
-    uint8_t centiseconds = ((response&0xF0)>>4)*10+(response&0x0F)*1;
-
-    response =spi.write(0x00);
-    uint8_t seconds = ((response&0x70)>>4)*10+(response&0x0F)*1;
-
-    response =spi.write(0x00);
-    uint8_t minutes = ((response&0x70)>>4)*10+(response&0x0F)*1;
-
-    response=spi.write(0x00);
-    uint8_t hours = ((response&0x30)>>4)*10+(response&0x0F)*1;
-
-    uint8_t day =spi.write(0x00);
-
-    response =spi.write(0x00);
-    uint8_t date = ((response&0x30)>>4)*10+(response&0x0F)*1;
-
-    response =spi.write(0x00);
-    uint8_t month = ((response&0x10)>>4)*10+(response&0x0F)*1;
-
+    spi.write(0x01); //reading seconds register
+    response =spi.write(0x01);
+    uint8_t seconds =  ((response&0x70)>>4)*10+(response&0x0F)*1;
+    
+    gCS_RTC=1;
+    gCS_RTC=0;
+    spi.write(0x02); //reading minutes register
+    response =spi.write(0x01);
+    uint8_t minutes =  ((response&0xF0)>>4)*10+(response&0x0F)*1;
+    
+    gCS_RTC=1;
+    gCS_RTC=0;
+    spi.write(0x03); //reading hours register
+    response=spi.write(0x01);
+    uint8_t hours =  ((response&0x30)>>4)*10+(response&0x0F)*1;
+    
+    gCS_RTC=1;
+    gCS_RTC=0;
+    spi.write(0x04); //reading day's  register
+    uint8_t day =spi.write(0x01);
+    
+    gCS_RTC=1;
+    gCS_RTC=0;
+    spi.write(0x05); //reading date register
+    response =spi.write(0x01);
+    uint8_t date =  ((response&0x30)>>4)*10+(response&0x0F)*1;
+    
+    gCS_RTC=1;
+    gCS_RTC=0;
+    spi.write(0x06); //reading month registe
+    response =spi.write(0x01);
+    uint8_t month =  ((response&0x10)>>4)*10+(response&0x0F)*1;
+    
+    gCS_RTC=1;
+    gCS_RTC=0;
     response =spi.write(0x00);
     uint8_t year = ((response&0xF0)>>4)*10+(response&0x0F)*1;
-    year = (year == 17)?0x00:(year == 18)?0x01:(year == 19)?0x02:(year == 20)?0x03:0x00;
+    year = (year == 16)?0x00:(year == 17)?0x01:(year == 18)?0x02:(year == 19)?0x03:0x00;
     gCS_RTC=1;
-
-    uint64_t time;
-    time = 0;
+    
+    uint8_t Time_stamp[8] = {year, month, date, day, hours, minutes, seconds, centiseconds};
+    
     time = time|(((uint64_t)(centiseconds&0x7F)));
     time = time|(((uint64_t)(seconds&0x3F))<<7);
     time = time|(((uint64_t)(minutes&0x3F))<<13);
@@ -126,8 +150,6 @@
     time = time|(((uint64_t)(month&0x07))<<29);
     time = time|(((uint64_t)(year&0x03))<<33);
     time = (time&0x00000007FFFFFFFF);
-
     SPI_mutex.unlock();
     return time;
 }
-