Diff: RTC.cpp

Revision:

0:d6e3d1e21484

Child:

2:4c79b3dfef31

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RTC.cpp	Mon Jun 15 12:16:59 2015 +0000
@@ -0,0 +1,135 @@
+#include "mbed.h"
+#include "func_head.h"
+
+SPI rtc_spi(PTD6,PTD7,PTD5);      // MOSI,MISO, CLOCK microcontroller(in order)                                                       
+DigitalOut rtc_cs(PTA13);         //Slave Select pin 
+//Serial pc(USBTX,USBRX);
+
+uint8_t* FUNC_CDMS_RD_RTC()
+{     
+    rtc_cs=1;
+    rtc_spi.format(8,0);
+    rtc_spi.frequency(1000000);
+    //clearing the halt bit 
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x8C);
+    rtc_spi.write(0x00);
+     
+    //clearing the OF bit 
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x8F);
+    rtc_spi.write(0x00);
+     
+    //century bits
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x80|0x03);
+    rtc_spi.write(0x00);
+ 
+    //Kick starting the oscillator 
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x81); //register address with write flag
+    rtc_spi.write(0x80);//enabling stop bit in the seconds register
+
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x81);
+    rtc_spi.write(0x00);//disabling the stop bit to restart the oscillator 
+
+    
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x80); 
+    rtc_spi.write(0x01); // set milliseconds value to 00
+    rtc_cs=1;
+
+    rtc_cs=0;
+    rtc_spi.write(0x81); 
+    rtc_spi.write(0x01); //set seconds value to 00
+    rtc_cs=1;
+
+    rtc_cs=0;
+    rtc_spi.write(0x82); 
+    rtc_spi.write(0x01);//set minutes value to 00
+    rtc_cs=1;
+
+    rtc_cs=0;
+    rtc_spi.write(0x83); 
+    rtc_spi.write(0x23); //set the hours to 01
+    rtc_cs=1;
+    
+    rtc_cs=0;
+    rtc_spi.write(0x84); 
+    rtc_spi.write(0x01); //set day of the week to 01
+    rtc_cs=1;
+    
+    rtc_cs=0;
+    rtc_spi.write(0x85); 
+    rtc_spi.write(0x31); //set date of the month to 01
+    rtc_cs=1;
+    
+    rtc_cs=0;
+    rtc_spi.write(0x86); 
+    rtc_spi.write(0x12); //set month to 01
+    rtc_cs=1;
+    
+    rtc_cs=0;
+    rtc_spi.write(0x87); 
+    rtc_spi.write(0x01); //set year to 00(2000)
+    rtc_cs=1;
+    
+    uint8_t response;
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x00); //reading milliseconds register
+    response = rtc_spi.write(0x00); // read the value by sending dummy byte
+    uint8_t milliseconds =  (uint8_t(response&0xF0)>>4)*10+uint8_t(response&0x0F)*1;
+    
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x01); //reading seconds register
+    response =rtc_spi.write(0x01);
+    uint8_t seconds =  ((response&0x70)>>4)*10+(response&0x0F)*1;
+    
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x02); //reading minutes register
+    response =rtc_spi.write(0x01);
+    uint8_t minutes =  ((response&0xF0)>>4)*10+(response&0x0F)*1;
+    
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x03); //reading hours register
+    response=rtc_spi.write(0x01);
+    uint8_t hours =  ((response&0x30)>>4)*10+(response&0x0F)*1;
+    
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x04); //reading day's  register
+    uint8_t day =rtc_spi.write(0x01);
+    
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x05); //reading date register
+    response =rtc_spi.write(0x01);
+    uint8_t date =  ((response&0x30)>>4)*10+(response&0x0F)*1;
+    
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x06); //reading month registe
+    response =rtc_spi.write(0x01);
+    uint8_t month =  ((response&0x10)>>4)*10+(response&0x0F)*1;
+    
+    rtc_cs=1;
+    rtc_cs=0;
+    rtc_spi.write(0x07); //reading year's registe
+    response =rtc_spi.write(0x01);
+    uint8_t year =  ((response&0xF0)>>4)*10+(response&0x0F)*1;
+    //sprintf(Time_stamp,"%02d%02d%02d%02d%02d%02d%02d%02d",year, month, date, day, hours, minutes, seconds, milliseconds );
+    uint8_t Time_stamp[8] = {year, month, date, day, hours, minutes, seconds, milliseconds};
+    printf("read\r\n");
+    return(Time_stamp);
+}