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vr1.1
Dependencies: FreescaleIAP mbed-rtos mbed
Fork of CDMS_RTOS_v1_1 by
RTC.cpp
- Committer:
- cholletisaik777
- Date:
- 2015-07-17
- Revision:
- 16:7428828a5da2
- Parent:
- 15:2c8629da6ec9
File content as of revision 16:7428828a5da2:
#include "mbed.h" #include "RTC.h" #include "all_funcs.h" #include "pin_config.h" SPI rtc_spi(PIN2, PIN1, PIN3); // MOSI,MISO, CLOCK microcontroller(in order) DigitalOut rtc_cs(PIN26); //Slave Select pin //Serial pc(USBTX,USBRX); void FCTN_INIT_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; printf("\n\r rtc initalised \n"); } uint64_t FCTN_CDMS_RD_RTC() { uint8_t response; printf("\n\r Entered rtc\n"); 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 centiseconds = (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; rtc_cs=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, centiseconds}; for(int i= 0; i<8;i++) printf("%d\t",Time_stamp[i]); printf("read\r\n"); uint64_t time; time = 0; time = time|(uint64_t)(centiseconds&0xEF); time = time|(uint64_t)(seconds&0xDF)<<7; time = time|(uint64_t)(minutes&0xDF)<<13; time = time|(uint64_t)(hours&0x1F)<<19; time = time|(uint64_t)(day&0x1F)<<24; time = time|(uint64_t)(month&0x0F)<<29; time = time|(uint64_t)(year&0x03)<<33; time = time&0x00000007FFFFFFFF; return time; }