Franz Pucher / RTC_DateTime

RTC on M0 and class design without rtc and target

Quote:

Example for training purposes only!!!

RTC/I2C data for target LPC11U24 Humer M0-Board and no data for others!!!

See RTC WIKI

RTC Class Hierarchy

RTC Example Main Program

rtc.cpp@0:397b5462e6d7, 2018-11-15 (annotated)

Committer:
fpucher
Date:
Thu Nov 15 06:55:25 2018 +0000
Revision:
0:397b5462e6d7
ifdef target

Who changed what in which revision?

UserRevisionLine numberNew contents of line
fpucher 0:397b5462e6d7 1 /***********************************
fpucher 0:397b5462e6d7 2 name: rtc.cpp Version: 0.2
fpucher 0:397b5462e6d7 3 author: PE HTL BULME
fpucher 0:397b5462e6d7 4 email: pe@bulme.at
fpucher 0:397b5462e6d7 5 description:
fpucher 0:397b5462e6d7 6 Implementation portion of class rtc
fpucher 0:397b5462e6d7 7 real time clock on himbed0
fpucher 0:397b5462e6d7 8
fpucher 0:397b5462e6d7 9 ***********************************/
fpucher 0:397b5462e6d7 10
fpucher 0:397b5462e6d7 11 #include "mbed.h"
fpucher 0:397b5462e6d7 12 #include "const.h"
fpucher 0:397b5462e6d7 13 #include "rtc.h"
fpucher 0:397b5462e6d7 14
fpucher 0:397b5462e6d7 15 RTC::~RTC()
fpucher 0:397b5462e6d7 16 {}
fpucher 0:397b5462e6d7 17
fpucher 0:397b5462e6d7 18 #ifdef TARGET_LPC11XX
fpucher 0:397b5462e6d7 19 // Default constructor
fpucher 0:397b5462e6d7 20 RTC::RTC() : i2c(p28, p27) // HIMBED M0
fpucher 0:397b5462e6d7 21 {
fpucher 0:397b5462e6d7 22 i2c.frequency(40000); // I2C Frequenz 40kHz
fpucher 0:397b5462e6d7 23 char init1[2] = {0x6, 0x00};
fpucher 0:397b5462e6d7 24 char init2[2] = {0x7, 0xff};
fpucher 0:397b5462e6d7 25 i2c.write(0x40, init1, 2);
fpucher 0:397b5462e6d7 26 i2c.write(0x40, init2, 2);
fpucher 0:397b5462e6d7 27
fpucher 0:397b5462e6d7 28 }
fpucher 0:397b5462e6d7 29
fpucher 0:397b5462e6d7 30 // Param. constructor with pins sda and scl
fpucher 0:397b5462e6d7 31 RTC::RTC(PinName sda, PinName scl) : i2c(sda, scl) //_sda(sda), _scl(scl) // no I2C default constructor
fpucher 0:397b5462e6d7 32 {
fpucher 0:397b5462e6d7 33 i2c.frequency(40000); // I2C Frequenz 40kHz
fpucher 0:397b5462e6d7 34 char init1[2] = {0x6, 0x00};
fpucher 0:397b5462e6d7 35 char init2[2] = {0x7, 0xff};
fpucher 0:397b5462e6d7 36 i2c.write(0x40, init1, 2);
fpucher 0:397b5462e6d7 37 i2c.write(0x40, init2, 2);
fpucher 0:397b5462e6d7 38 }
fpucher 0:397b5462e6d7 39
fpucher 0:397b5462e6d7 40 char RTC::rtc_read(char address)
fpucher 0:397b5462e6d7 41 {
fpucher 0:397b5462e6d7 42 char value;
fpucher 0:397b5462e6d7 43 i2c.start();
fpucher 0:397b5462e6d7 44 //i2c.write(RTC8563_ADR_RD, &address, true);
fpucher 0:397b5462e6d7 45 i2c.write(RTC8563_ADR_WR);
fpucher 0:397b5462e6d7 46 i2c.write(address);
fpucher 0:397b5462e6d7 47 i2c.start();
fpucher 0:397b5462e6d7 48 i2c.write(RTC8563_ADR_RD);
fpucher 0:397b5462e6d7 49 value = i2c.read(0);
fpucher 0:397b5462e6d7 50 i2c.stop();
fpucher 0:397b5462e6d7 51 return value;
fpucher 0:397b5462e6d7 52 }
fpucher 0:397b5462e6d7 53 void RTC::rtc_write(char address, char value)
fpucher 0:397b5462e6d7 54 {
fpucher 0:397b5462e6d7 55 i2c.start();
fpucher 0:397b5462e6d7 56 //i2c.write(RTC8563_ADR_WR, &address, value, true);
fpucher 0:397b5462e6d7 57 i2c.write(RTC8563_ADR_WR);
fpucher 0:397b5462e6d7 58 i2c.write(address);
fpucher 0:397b5462e6d7 59 i2c.write(value);
fpucher 0:397b5462e6d7 60 i2c.stop();
fpucher 0:397b5462e6d7 61 }
fpucher 0:397b5462e6d7 62
fpucher 0:397b5462e6d7 63 void RTC::rtc_init()
fpucher 0:397b5462e6d7 64 {
fpucher 0:397b5462e6d7 65 // Format
fpucher 0:397b5462e6d7 66 // 2015/03/31
fpucher 0:397b5462e6d7 67 // 22:10:00
fpucher 0:397b5462e6d7 68
fpucher 0:397b5462e6d7 69 week_val = 0x01; // Tu
fpucher 0:397b5462e6d7 70 rtc_write(CONTROL1, 0x20); // stop
fpucher 0:397b5462e6d7 71 rtc_write(CONTROL2, 0x00);
fpucher 0:397b5462e6d7 72 rtc_write(YEARS, (0x15));
fpucher 0:397b5462e6d7 73 rtc_write(MONTHS, (0x03));
fpucher 0:397b5462e6d7 74 rtc_write(DAYS, (0x31));
fpucher 0:397b5462e6d7 75 rtc_write(HOURS, (0x22));
fpucher 0:397b5462e6d7 76 rtc_write(MINUTES, (0x10));
fpucher 0:397b5462e6d7 77 rtc_write(SECONDS, (0x00));
fpucher 0:397b5462e6d7 78 rtc_write(WEEKDAYS, week_val);
fpucher 0:397b5462e6d7 79 rtc_write(CLOCKOUT_FREQ, 0x00); // 0x83 = TE on & 1Hz
fpucher 0:397b5462e6d7 80 rtc_write(TIMER_CINTROL, 0x00);
fpucher 0:397b5462e6d7 81 rtc_write(CONTROL1, 0x00); // start
fpucher 0:397b5462e6d7 82 }
fpucher 0:397b5462e6d7 83
fpucher 0:397b5462e6d7 84 void RTC::rtc_alarm() // Setting up RTC alarm
fpucher 0:397b5462e6d7 85 {
fpucher 0:397b5462e6d7 86 rtc_write(CONTROL1, 0x20); // stop
fpucher 0:397b5462e6d7 87 rtc_write(CONTROL2, 0x02); // AIE - alarm interrupt enabled
fpucher 0:397b5462e6d7 88 rtc_write(DAY_ALARM, (0x80) );
fpucher 0:397b5462e6d7 89 rtc_write(HOUR_ALARM, (0x97));
fpucher 0:397b5462e6d7 90 rtc_write(MINUTE_ALARM, (0x02));
fpucher 0:397b5462e6d7 91 rtc_write(WEEKDAY_ALARM, (0x80));
fpucher 0:397b5462e6d7 92 rtc_write(CONTROL1, 0x00); // start
fpucher 0:397b5462e6d7 93 }
fpucher 0:397b5462e6d7 94 #else
fpucher 0:397b5462e6d7 95
fpucher 0:397b5462e6d7 96 // Default constructor
fpucher 0:397b5462e6d7 97 RTC::RTC()
fpucher 0:397b5462e6d7 98 {}
fpucher 0:397b5462e6d7 99 RTC::RTC(PinName sda, PinName scl) // : i2c(sda, scl) //_sda(sda), _scl(scl) // no I2C default constructor
fpucher 0:397b5462e6d7 100 {}
fpucher 0:397b5462e6d7 101
fpucher 0:397b5462e6d7 102 char RTC::rtc_read(char address) {
fpucher 0:397b5462e6d7 103 return 0x21;
fpucher 0:397b5462e6d7 104 }
fpucher 0:397b5462e6d7 105
fpucher 0:397b5462e6d7 106 void RTC::rtc_write(char address, char value)
fpucher 0:397b5462e6d7 107 { }
fpucher 0:397b5462e6d7 108
fpucher 0:397b5462e6d7 109 void RTC::rtc_init()
fpucher 0:397b5462e6d7 110 {
fpucher 0:397b5462e6d7 111 // Format
fpucher 0:397b5462e6d7 112 // 2015/03/31
fpucher 0:397b5462e6d7 113 // 22:10:00
fpucher 0:397b5462e6d7 114 }
fpucher 0:397b5462e6d7 115
fpucher 0:397b5462e6d7 116 void RTC::rtc_alarm() // Setting up RTC alarm
fpucher 0:397b5462e6d7 117 {}
fpucher 0:397b5462e6d7 118 #endif
fpucher 0:397b5462e6d7 119
fpucher 0:397b5462e6d7 120 //-----------------INTERNAL USE ONLY ----------------------------
fpucher 0:397b5462e6d7 121 void RTC::error()
fpucher 0:397b5462e6d7 122 {
fpucher 0:397b5462e6d7 123 }