Pradeep Kotipalli / Mbed 2 deprecated CDMS_DEC_2015

cdms_update

Dependencies:   FreescaleIAP mbed-rtos mbed

Fork of CDMS_SD_MNG_OVERDRIVE by saikiran cholleti

cdms_rtc.cpp@0:bcbd76c86cde, 2015-12-16 (annotated)

Committer:
cholletisaik777
Date:
Wed Dec 16 09:06:59 2015 +0000
Revision:
0:bcbd76c86cde
nnb

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cholletisaik777 0:bcbd76c86cde 1 #include "mbed.h"
cholletisaik777 0:bcbd76c86cde 2 #include "cdms_rtc.h"
cholletisaik777 0:bcbd76c86cde 3
cholletisaik777 0:bcbd76c86cde 4 SPI rtc_spi(PTE1, PTE3, PTE2); // MOSI,MISO, CLOCK microcontroller(in order)
cholletisaik777 0:bcbd76c86cde 5 DigitalOut rtc_cs(PTE29); //Slave Select pin
cholletisaik777 0:bcbd76c86cde 6
cholletisaik777 0:bcbd76c86cde 7 void FCTN_CDMS_INIT_RTC()
cholletisaik777 0:bcbd76c86cde 8 {
cholletisaik777 0:bcbd76c86cde 9 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 10 rtc_spi.format(8,0);
cholletisaik777 0:bcbd76c86cde 11 rtc_spi.frequency(1000000);
cholletisaik777 0:bcbd76c86cde 12 //clearing the halt bit
cholletisaik777 0:bcbd76c86cde 13 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 14 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 15 rtc_spi.write(0x8C);
cholletisaik777 0:bcbd76c86cde 16 rtc_spi.write(0x00);
cholletisaik777 0:bcbd76c86cde 17
cholletisaik777 0:bcbd76c86cde 18 //clearing the OF bit
cholletisaik777 0:bcbd76c86cde 19 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 20 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 21 rtc_spi.write(0x8F);
cholletisaik777 0:bcbd76c86cde 22 rtc_spi.write(0x00);
cholletisaik777 0:bcbd76c86cde 23
cholletisaik777 0:bcbd76c86cde 24 //century bits
cholletisaik777 0:bcbd76c86cde 25 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 26 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 27 rtc_spi.write(0x80|0x03);
cholletisaik777 0:bcbd76c86cde 28 rtc_spi.write(0x00);
cholletisaik777 0:bcbd76c86cde 29
cholletisaik777 0:bcbd76c86cde 30 //Kick starting the oscillator
cholletisaik777 0:bcbd76c86cde 31 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 32 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 33 rtc_spi.write(0x81); //register address with write flag
cholletisaik777 0:bcbd76c86cde 34 rtc_spi.write(0x80);//enabling stop bit in the seconds register
cholletisaik777 0:bcbd76c86cde 35
cholletisaik777 0:bcbd76c86cde 36 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 37 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 38 rtc_spi.write(0x81);
cholletisaik777 0:bcbd76c86cde 39 rtc_spi.write(0x00);//disabling the stop bit to restart the oscillator
cholletisaik777 0:bcbd76c86cde 40
cholletisaik777 0:bcbd76c86cde 41
cholletisaik777 0:bcbd76c86cde 42 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 43 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 44 rtc_spi.write(0x80);
cholletisaik777 0:bcbd76c86cde 45 rtc_spi.write(0x01); // set milliseconds value to 00
cholletisaik777 0:bcbd76c86cde 46 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 47
cholletisaik777 0:bcbd76c86cde 48 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 49 rtc_spi.write(0x81);
cholletisaik777 0:bcbd76c86cde 50 rtc_spi.write(0x01); //set seconds value to 00
cholletisaik777 0:bcbd76c86cde 51 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 52
cholletisaik777 0:bcbd76c86cde 53 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 54 rtc_spi.write(0x82);
cholletisaik777 0:bcbd76c86cde 55 rtc_spi.write(0x01);//set minutes value to 00
cholletisaik777 0:bcbd76c86cde 56 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 57
cholletisaik777 0:bcbd76c86cde 58 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 59 rtc_spi.write(0x83);
cholletisaik777 0:bcbd76c86cde 60 rtc_spi.write(0x23); //set the hours to 01
cholletisaik777 0:bcbd76c86cde 61 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 62
cholletisaik777 0:bcbd76c86cde 63 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 64 rtc_spi.write(0x84);
cholletisaik777 0:bcbd76c86cde 65 rtc_spi.write(0x01); //set day of the week to 01
cholletisaik777 0:bcbd76c86cde 66 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 67
cholletisaik777 0:bcbd76c86cde 68 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 69 rtc_spi.write(0x85);
cholletisaik777 0:bcbd76c86cde 70 rtc_spi.write(0x31); //set date of the month to 01
cholletisaik777 0:bcbd76c86cde 71 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 72
cholletisaik777 0:bcbd76c86cde 73 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 74 rtc_spi.write(0x86);
cholletisaik777 0:bcbd76c86cde 75 rtc_spi.write(0x12); //set month to 01
cholletisaik777 0:bcbd76c86cde 76 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 77
cholletisaik777 0:bcbd76c86cde 78 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 79 rtc_spi.write(0x87);
cholletisaik777 0:bcbd76c86cde 80 rtc_spi.write(0x01); //set year to 00(2000)
cholletisaik777 0:bcbd76c86cde 81 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 82 printf("\n\r rtc initalised \n");
cholletisaik777 0:bcbd76c86cde 83 }
cholletisaik777 0:bcbd76c86cde 84
cholletisaik777 0:bcbd76c86cde 85 uint64_t FCTN_CDMS_RD_RTC()
cholletisaik777 0:bcbd76c86cde 86 {
cholletisaik777 0:bcbd76c86cde 87 uint8_t response;
cholletisaik777 0:bcbd76c86cde 88 printf("\n\r Entered rtc\n");
cholletisaik777 0:bcbd76c86cde 89 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 90 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 91 rtc_spi.write(0x00); //reading milliseconds register
cholletisaik777 0:bcbd76c86cde 92 response = rtc_spi.write(0x00); // read the value by sending dummy byte
cholletisaik777 0:bcbd76c86cde 93 uint8_t centiseconds = (uint8_t(response&0xF0)>>4)*10+uint8_t(response&0x0F)*1;
cholletisaik777 0:bcbd76c86cde 94
cholletisaik777 0:bcbd76c86cde 95 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 96 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 97 rtc_spi.write(0x01); //reading seconds register
cholletisaik777 0:bcbd76c86cde 98 response =rtc_spi.write(0x01);
cholletisaik777 0:bcbd76c86cde 99 uint8_t seconds = ((response&0x70)>>4)*10+(response&0x0F)*1;
cholletisaik777 0:bcbd76c86cde 100
cholletisaik777 0:bcbd76c86cde 101 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 102 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 103 rtc_spi.write(0x02); //reading minutes register
cholletisaik777 0:bcbd76c86cde 104 response =rtc_spi.write(0x01);
cholletisaik777 0:bcbd76c86cde 105 uint8_t minutes = ((response&0xF0)>>4)*10+(response&0x0F)*1;
cholletisaik777 0:bcbd76c86cde 106
cholletisaik777 0:bcbd76c86cde 107 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 108 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 109 rtc_spi.write(0x03); //reading hours register
cholletisaik777 0:bcbd76c86cde 110 response=rtc_spi.write(0x01);
cholletisaik777 0:bcbd76c86cde 111 uint8_t hours = ((response&0x30)>>4)*10+(response&0x0F)*1;
cholletisaik777 0:bcbd76c86cde 112
cholletisaik777 0:bcbd76c86cde 113 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 114 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 115 rtc_spi.write(0x04); //reading day's register
cholletisaik777 0:bcbd76c86cde 116 uint8_t day =rtc_spi.write(0x01);
cholletisaik777 0:bcbd76c86cde 117
cholletisaik777 0:bcbd76c86cde 118 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 119 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 120 rtc_spi.write(0x05); //reading date register
cholletisaik777 0:bcbd76c86cde 121 response =rtc_spi.write(0x01);
cholletisaik777 0:bcbd76c86cde 122 uint8_t date = ((response&0x30)>>4)*10+(response&0x0F)*1;
cholletisaik777 0:bcbd76c86cde 123
cholletisaik777 0:bcbd76c86cde 124 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 125 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 126 rtc_spi.write(0x06); //reading month registe
cholletisaik777 0:bcbd76c86cde 127 response =rtc_spi.write(0x01);
cholletisaik777 0:bcbd76c86cde 128 uint8_t month = ((response&0x10)>>4)*10+(response&0x0F)*1;
cholletisaik777 0:bcbd76c86cde 129
cholletisaik777 0:bcbd76c86cde 130 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 131 rtc_cs=0;
cholletisaik777 0:bcbd76c86cde 132 rtc_spi.write(0x07); //reading year's registe
cholletisaik777 0:bcbd76c86cde 133 response =rtc_spi.write(0x01);
cholletisaik777 0:bcbd76c86cde 134 uint8_t year = ((response&0xF0)>>4)*10+(response&0x0F)*1;
cholletisaik777 0:bcbd76c86cde 135 rtc_cs=1;
cholletisaik777 0:bcbd76c86cde 136 //sprintf(Time_stamp,"%02d%02d%02d%02d%02d%02d%02d%02d",year, month, date, day, hours, minutes, seconds, milliseconds );
cholletisaik777 0:bcbd76c86cde 137 uint8_t Time_stamp[8] = {year, month, date, day, hours, minutes, seconds, centiseconds};
cholletisaik777 0:bcbd76c86cde 138 for(int i= 0; i<8;i++)
cholletisaik777 0:bcbd76c86cde 139 printf("%d\t",Time_stamp[i]);
cholletisaik777 0:bcbd76c86cde 140 printf("read\r\n");
cholletisaik777 0:bcbd76c86cde 141 uint64_t time;
cholletisaik777 0:bcbd76c86cde 142 time = 0;
cholletisaik777 0:bcbd76c86cde 143 time = time|(((uint64_t)(centiseconds&0x7F)));
cholletisaik777 0:bcbd76c86cde 144 time = time|(((uint64_t)(seconds&0x3F))<<7);
cholletisaik777 0:bcbd76c86cde 145 time = time|(((uint64_t)(minutes&0x3F))<<13);
cholletisaik777 0:bcbd76c86cde 146 time = time|(((uint64_t)(hours&0x1F))<<19);
cholletisaik777 0:bcbd76c86cde 147 time = time|(((uint64_t)(day&0x1F))<<24);
cholletisaik777 0:bcbd76c86cde 148 time = time|(((uint64_t)(month&0x07))<<29);
cholletisaik777 0:bcbd76c86cde 149 time = time|(((uint64_t)(year&0x03))<<33);
cholletisaik777 0:bcbd76c86cde 150 time = (time&0x00000007FFFFFFFF);
cholletisaik777 0:bcbd76c86cde 151 //printf("\n\r%x%x", (int)(time >> 32), (int)(time));
cholletisaik777 0:bcbd76c86cde 152 printf("\n\r0x%016llx\n\r", time);
cholletisaik777 0:bcbd76c86cde 153 return time;
cholletisaik777 0:bcbd76c86cde 154 }