vr1.1
Dependencies: FreescaleIAP mbed-rtos mbed
Fork of CDMS_RTOS_v1_1 by
RTC.cpp@3:0c3f7c3fabc9, 2015-06-16 (annotated)
- Committer:
- sakthipriya
- Date:
- Tue Jun 16 09:04:53 2015 +0000
- Revision:
- 3:0c3f7c3fabc9
- Parent:
- 2:4c79b3dfef31
- Child:
- 5:c77b49508927
vr 1.0 working
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
cholletisaik777 | 0:d6e3d1e21484 | 1 | #include "mbed.h" |
cholletisaik777 | 0:d6e3d1e21484 | 2 | #include "func_head.h" |
cholletisaik777 | 0:d6e3d1e21484 | 3 | |
cholletisaik777 | 0:d6e3d1e21484 | 4 | SPI rtc_spi(PTD6,PTD7,PTD5); // MOSI,MISO, CLOCK microcontroller(in order) |
pradeepvk2208 | 2:4c79b3dfef31 | 5 | DigitalOut rtc_cs(PTD4); //Slave Select pin |
cholletisaik777 | 0:d6e3d1e21484 | 6 | //Serial pc(USBTX,USBRX); |
cholletisaik777 | 0:d6e3d1e21484 | 7 | |
pradeepvk2208 | 2:4c79b3dfef31 | 8 | void FUNC_INIT_RTC() |
pradeepvk2208 | 2:4c79b3dfef31 | 9 | { |
cholletisaik777 | 0:d6e3d1e21484 | 10 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 11 | rtc_spi.format(8,0); |
cholletisaik777 | 0:d6e3d1e21484 | 12 | rtc_spi.frequency(1000000); |
cholletisaik777 | 0:d6e3d1e21484 | 13 | //clearing the halt bit |
cholletisaik777 | 0:d6e3d1e21484 | 14 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 15 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 16 | rtc_spi.write(0x8C); |
cholletisaik777 | 0:d6e3d1e21484 | 17 | rtc_spi.write(0x00); |
cholletisaik777 | 0:d6e3d1e21484 | 18 | |
cholletisaik777 | 0:d6e3d1e21484 | 19 | //clearing the OF bit |
cholletisaik777 | 0:d6e3d1e21484 | 20 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 21 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 22 | rtc_spi.write(0x8F); |
cholletisaik777 | 0:d6e3d1e21484 | 23 | rtc_spi.write(0x00); |
cholletisaik777 | 0:d6e3d1e21484 | 24 | |
cholletisaik777 | 0:d6e3d1e21484 | 25 | //century bits |
cholletisaik777 | 0:d6e3d1e21484 | 26 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 27 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 28 | rtc_spi.write(0x80|0x03); |
cholletisaik777 | 0:d6e3d1e21484 | 29 | rtc_spi.write(0x00); |
cholletisaik777 | 0:d6e3d1e21484 | 30 | |
cholletisaik777 | 0:d6e3d1e21484 | 31 | //Kick starting the oscillator |
cholletisaik777 | 0:d6e3d1e21484 | 32 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 33 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 34 | rtc_spi.write(0x81); //register address with write flag |
cholletisaik777 | 0:d6e3d1e21484 | 35 | rtc_spi.write(0x80);//enabling stop bit in the seconds register |
cholletisaik777 | 0:d6e3d1e21484 | 36 | |
cholletisaik777 | 0:d6e3d1e21484 | 37 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 38 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 39 | rtc_spi.write(0x81); |
cholletisaik777 | 0:d6e3d1e21484 | 40 | rtc_spi.write(0x00);//disabling the stop bit to restart the oscillator |
cholletisaik777 | 0:d6e3d1e21484 | 41 | |
cholletisaik777 | 0:d6e3d1e21484 | 42 | |
cholletisaik777 | 0:d6e3d1e21484 | 43 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 44 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 45 | rtc_spi.write(0x80); |
cholletisaik777 | 0:d6e3d1e21484 | 46 | rtc_spi.write(0x01); // set milliseconds value to 00 |
cholletisaik777 | 0:d6e3d1e21484 | 47 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 48 | |
cholletisaik777 | 0:d6e3d1e21484 | 49 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 50 | rtc_spi.write(0x81); |
cholletisaik777 | 0:d6e3d1e21484 | 51 | rtc_spi.write(0x01); //set seconds value to 00 |
cholletisaik777 | 0:d6e3d1e21484 | 52 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 53 | |
cholletisaik777 | 0:d6e3d1e21484 | 54 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 55 | rtc_spi.write(0x82); |
cholletisaik777 | 0:d6e3d1e21484 | 56 | rtc_spi.write(0x01);//set minutes value to 00 |
cholletisaik777 | 0:d6e3d1e21484 | 57 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 58 | |
cholletisaik777 | 0:d6e3d1e21484 | 59 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 60 | rtc_spi.write(0x83); |
cholletisaik777 | 0:d6e3d1e21484 | 61 | rtc_spi.write(0x23); //set the hours to 01 |
cholletisaik777 | 0:d6e3d1e21484 | 62 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 63 | |
cholletisaik777 | 0:d6e3d1e21484 | 64 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 65 | rtc_spi.write(0x84); |
cholletisaik777 | 0:d6e3d1e21484 | 66 | rtc_spi.write(0x01); //set day of the week to 01 |
cholletisaik777 | 0:d6e3d1e21484 | 67 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 68 | |
cholletisaik777 | 0:d6e3d1e21484 | 69 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 70 | rtc_spi.write(0x85); |
cholletisaik777 | 0:d6e3d1e21484 | 71 | rtc_spi.write(0x31); //set date of the month to 01 |
cholletisaik777 | 0:d6e3d1e21484 | 72 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 73 | |
cholletisaik777 | 0:d6e3d1e21484 | 74 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 75 | rtc_spi.write(0x86); |
cholletisaik777 | 0:d6e3d1e21484 | 76 | rtc_spi.write(0x12); //set month to 01 |
cholletisaik777 | 0:d6e3d1e21484 | 77 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 78 | |
cholletisaik777 | 0:d6e3d1e21484 | 79 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 80 | rtc_spi.write(0x87); |
cholletisaik777 | 0:d6e3d1e21484 | 81 | rtc_spi.write(0x01); //set year to 00(2000) |
cholletisaik777 | 0:d6e3d1e21484 | 82 | rtc_cs=1; |
sakthipriya | 3:0c3f7c3fabc9 | 83 | printf("\n\r rtc initalised \n"); |
pradeepvk2208 | 2:4c79b3dfef31 | 84 | } |
pradeepvk2208 | 2:4c79b3dfef31 | 85 | |
pradeepvk2208 | 2:4c79b3dfef31 | 86 | uint8_t* FUNC_CDMS_RD_RTC() |
sakthipriya | 3:0c3f7c3fabc9 | 87 | |
pradeepvk2208 | 2:4c79b3dfef31 | 88 | { |
cholletisaik777 | 0:d6e3d1e21484 | 89 | uint8_t response; |
sakthipriya | 3:0c3f7c3fabc9 | 90 | printf("\n\r Entered rtc\n"); |
cholletisaik777 | 0:d6e3d1e21484 | 91 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 92 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 93 | rtc_spi.write(0x00); //reading milliseconds register |
cholletisaik777 | 0:d6e3d1e21484 | 94 | response = rtc_spi.write(0x00); // read the value by sending dummy byte |
cholletisaik777 | 0:d6e3d1e21484 | 95 | uint8_t milliseconds = (uint8_t(response&0xF0)>>4)*10+uint8_t(response&0x0F)*1; |
cholletisaik777 | 0:d6e3d1e21484 | 96 | |
cholletisaik777 | 0:d6e3d1e21484 | 97 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 98 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 99 | rtc_spi.write(0x01); //reading seconds register |
cholletisaik777 | 0:d6e3d1e21484 | 100 | response =rtc_spi.write(0x01); |
cholletisaik777 | 0:d6e3d1e21484 | 101 | uint8_t seconds = ((response&0x70)>>4)*10+(response&0x0F)*1; |
cholletisaik777 | 0:d6e3d1e21484 | 102 | |
cholletisaik777 | 0:d6e3d1e21484 | 103 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 104 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 105 | rtc_spi.write(0x02); //reading minutes register |
cholletisaik777 | 0:d6e3d1e21484 | 106 | response =rtc_spi.write(0x01); |
cholletisaik777 | 0:d6e3d1e21484 | 107 | uint8_t minutes = ((response&0xF0)>>4)*10+(response&0x0F)*1; |
cholletisaik777 | 0:d6e3d1e21484 | 108 | |
cholletisaik777 | 0:d6e3d1e21484 | 109 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 110 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 111 | rtc_spi.write(0x03); //reading hours register |
cholletisaik777 | 0:d6e3d1e21484 | 112 | response=rtc_spi.write(0x01); |
cholletisaik777 | 0:d6e3d1e21484 | 113 | uint8_t hours = ((response&0x30)>>4)*10+(response&0x0F)*1; |
cholletisaik777 | 0:d6e3d1e21484 | 114 | |
cholletisaik777 | 0:d6e3d1e21484 | 115 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 116 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 117 | rtc_spi.write(0x04); //reading day's register |
cholletisaik777 | 0:d6e3d1e21484 | 118 | uint8_t day =rtc_spi.write(0x01); |
cholletisaik777 | 0:d6e3d1e21484 | 119 | |
cholletisaik777 | 0:d6e3d1e21484 | 120 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 121 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 122 | rtc_spi.write(0x05); //reading date register |
cholletisaik777 | 0:d6e3d1e21484 | 123 | response =rtc_spi.write(0x01); |
cholletisaik777 | 0:d6e3d1e21484 | 124 | uint8_t date = ((response&0x30)>>4)*10+(response&0x0F)*1; |
cholletisaik777 | 0:d6e3d1e21484 | 125 | |
cholletisaik777 | 0:d6e3d1e21484 | 126 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 127 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 128 | rtc_spi.write(0x06); //reading month registe |
cholletisaik777 | 0:d6e3d1e21484 | 129 | response =rtc_spi.write(0x01); |
cholletisaik777 | 0:d6e3d1e21484 | 130 | uint8_t month = ((response&0x10)>>4)*10+(response&0x0F)*1; |
cholletisaik777 | 0:d6e3d1e21484 | 131 | |
cholletisaik777 | 0:d6e3d1e21484 | 132 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 133 | rtc_cs=0; |
cholletisaik777 | 0:d6e3d1e21484 | 134 | rtc_spi.write(0x07); //reading year's registe |
cholletisaik777 | 0:d6e3d1e21484 | 135 | response =rtc_spi.write(0x01); |
cholletisaik777 | 0:d6e3d1e21484 | 136 | uint8_t year = ((response&0xF0)>>4)*10+(response&0x0F)*1; |
sakthipriya | 3:0c3f7c3fabc9 | 137 | rtc_cs=1; |
cholletisaik777 | 0:d6e3d1e21484 | 138 | //sprintf(Time_stamp,"%02d%02d%02d%02d%02d%02d%02d%02d",year, month, date, day, hours, minutes, seconds, milliseconds ); |
cholletisaik777 | 0:d6e3d1e21484 | 139 | uint8_t Time_stamp[8] = {year, month, date, day, hours, minutes, seconds, milliseconds}; |
sakthipriya | 3:0c3f7c3fabc9 | 140 | for(int i= 0; i<8;i++) |
sakthipriya | 3:0c3f7c3fabc9 | 141 | printf("%d\t",Time_stamp[i]); |
cholletisaik777 | 0:d6e3d1e21484 | 142 | printf("read\r\n"); |
cholletisaik777 | 0:d6e3d1e21484 | 143 | return(Time_stamp); |
cholletisaik777 | 0:d6e3d1e21484 | 144 | } |
sakthipriya | 3:0c3f7c3fabc9 | 145 | |
sakthipriya | 3:0c3f7c3fabc9 | 146 |