HIMBED_3AHELI / Mbed 2 deprecated rtc_func

Functions and formatted printing of time and date for RTC8563

Dependencies:   mbed

Inhalt

I2C RTC on HIMBED

/media/uploads/bulmecisco/rtc.jpg

Definition der benannten Konstanten für die Register des PCF8563 (Tabelle 4)
Praeprozessor-Direktiven #define werden durch benannte Konstante ersetzt

const.h

/***********************************
name:   const.h    Version: 0.1
author: PE HTL BULME
email:  pe@bulme.at
description:
  Named constants definitions for registers 
  PCF8563 RTC on HIMBED M0 - LPC11U24 
***********************************/

#ifndef CONST_H
#define CONST_H

// Address of RTC
const int RTC8563_ADR = 0xA2;
// Control and status
const int CONTROL1 = 0x00;
const int CONTROL2 = 0x01;
// Time and date
const int SECONDS = 0x02;   
const int MINUTES = 0x03;
const int HOURS = 0x04;
const int DAYS = 0x05;
const int WEEKDAYS = 0x06;
const int MONTHS = 0x07;
const int YEARS = 0x08;
// Alarm
const int MINUTE_ALARM = 0x09;
const int HOUR_ALARM = 0x0A;
const int DAY_ALARM = 0x0B;
const int WEEKDAY_ALARM = 0x0C;
// Clock and timer
const int CLOCKOUT_FREQ = 0x0D;
const int TIMER_CINTROL = 0x0E;
const int _READ = 0x01;

#endif

Register organisation

/media/uploads/bulmecisco/register.jpg

Terminal program

Mit einem Terminal Programm (z.B. HTERM) können die Werte von der seriellen Schnittstelle (COM-Port) angezeigt werden:

/media/uploads/bulmecisco/hterm.jpg

Next

main.cpp@0:32ae5fd83722, 2015-04-05 (annotated)

Committer:
bulmecisco
Date:
Sun Apr 05 09:55:01 2015 +0000
Revision:
0:32ae5fd83722
Child:
1:554eb6675279
Functions and formatted printing of time and date for real time clock chip RTC8563

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bulmecisco 0:32ae5fd83722 1 /***********************************
bulmecisco 0:32ae5fd83722 2 name: main.cpp Version: 0.1
bulmecisco 0:32ae5fd83722 3 author: PE HTL BULME
bulmecisco 0:32ae5fd83722 4 email: pe@bulme.at
bulmecisco 0:32ae5fd83722 5 description:
bulmecisco 0:32ae5fd83722 6 Real Time Clock (RTC8563)
bulmecisco 0:32ae5fd83722 7 on HIMBED M0 - LPC11U24
bulmecisco 0:32ae5fd83722 8 prints formatted time and date values to serial port
bulmecisco 0:32ae5fd83722 9 programed by Franz Wolf (wf@bulme.at)
bulmecisco 0:32ae5fd83722 10 ***********************************/
bulmecisco 0:32ae5fd83722 11 #include "mbed.h"
bulmecisco 0:32ae5fd83722 12
bulmecisco 0:32ae5fd83722 13 // Symbolic constants
bulmecisco 0:32ae5fd83722 14 #define RTC8563_ADR 0xA2
bulmecisco 0:32ae5fd83722 15 #define CONTROL1 0x00
bulmecisco 0:32ae5fd83722 16 #define CONTROL2 0x01
bulmecisco 0:32ae5fd83722 17 #define SECONDS 0x02
bulmecisco 0:32ae5fd83722 18 #define MINUTES 0x03
bulmecisco 0:32ae5fd83722 19 #define HOURS 0x04
bulmecisco 0:32ae5fd83722 20 #define DAYS 0x05
bulmecisco 0:32ae5fd83722 21 #define WEEKDAYS 0x06
bulmecisco 0:32ae5fd83722 22 #define MONTHS 0x07
bulmecisco 0:32ae5fd83722 23 #define YEARS 0x08
bulmecisco 0:32ae5fd83722 24 #define MINUTE_ALARM 0x09
bulmecisco 0:32ae5fd83722 25 #define HOUR_ALARM 0x0A
bulmecisco 0:32ae5fd83722 26 #define DAY_ALARM 0x0B
bulmecisco 0:32ae5fd83722 27 #define WEEKDAY_ALARM 0x0C
bulmecisco 0:32ae5fd83722 28 #define CLOCKOUT_FREQ 0x0D
bulmecisco 0:32ae5fd83722 29 #define TIMER_CINTROL 0x0E
bulmecisco 0:32ae5fd83722 30 #define TIMER 0x0F
bulmecisco 0:32ae5fd83722 31 #define _READ 0x01
bulmecisco 0:32ae5fd83722 32
bulmecisco 0:32ae5fd83722 33 // Wiring
bulmecisco 0:32ae5fd83722 34 Serial pc(USBTX, USBRX);
bulmecisco 0:32ae5fd83722 35 I2C i2c(p28, p27);
bulmecisco 0:32ae5fd83722 36
bulmecisco 0:32ae5fd83722 37 // Function prototyping
bulmecisco 0:32ae5fd83722 38 void printTime();
bulmecisco 0:32ae5fd83722 39 void rtc_init();
bulmecisco 0:32ae5fd83722 40 char rtc_read(char address);
bulmecisco 0:32ae5fd83722 41 void rtc_write(char address, char value);
bulmecisco 0:32ae5fd83722 42
bulmecisco 0:32ae5fd83722 43 // Global variables
bulmecisco 0:32ae5fd83722 44 char year, month, day, week;
bulmecisco 0:32ae5fd83722 45 char hour, minute, sec;
bulmecisco 0:32ae5fd83722 46
bulmecisco 0:32ae5fd83722 47 char week_val;
bulmecisco 0:32ae5fd83722 48 char week_chr[7][4] = {"MON","TUE","WED","THU","FRI","SAT","SUN"};
bulmecisco 0:32ae5fd83722 49
bulmecisco 0:32ae5fd83722 50 // Functiondefinitions
bulmecisco 0:32ae5fd83722 51 void printTime()
bulmecisco 0:32ae5fd83722 52 {
bulmecisco 0:32ae5fd83722 53 year = rtc_read(YEARS);
bulmecisco 0:32ae5fd83722 54 month = rtc_read(MONTHS);
bulmecisco 0:32ae5fd83722 55 day = rtc_read(DAYS);
bulmecisco 0:32ae5fd83722 56 week = rtc_read(WEEKDAYS);
bulmecisco 0:32ae5fd83722 57 hour = rtc_read(HOURS);
bulmecisco 0:32ae5fd83722 58 minute = rtc_read(MINUTES);
bulmecisco 0:32ae5fd83722 59 sec = rtc_read(SECONDS);
bulmecisco 0:32ae5fd83722 60
bulmecisco 0:32ae5fd83722 61 //Datum Ausgabe
bulmecisco 0:32ae5fd83722 62 pc.printf("20%x%x/%x%x/%x%x %s\n",
bulmecisco 0:32ae5fd83722 63 ((year >> 4) & 0x03) , (year & 0x0F) ,
bulmecisco 0:32ae5fd83722 64 ((month >> 4) & 0x01), (month & 0x0F) ,
bulmecisco 0:32ae5fd83722 65 ((day >> 4) & 0x03), (day & 0x0F) ,
bulmecisco 0:32ae5fd83722 66 week_chr[week & 0x07]);
bulmecisco 0:32ae5fd83722 67
bulmecisco 0:32ae5fd83722 68 //Zeit Ausgabe
bulmecisco 0:32ae5fd83722 69 pc.printf("%x%x:%x%x:%x%x\n",
bulmecisco 0:32ae5fd83722 70 ((hour >> 4) & 0x03), (hour & 0x0F),
bulmecisco 0:32ae5fd83722 71 (minute >> 4), (minute & 0x0F) ,
bulmecisco 0:32ae5fd83722 72 (sec >> 4), (sec & 0x0F) );
bulmecisco 0:32ae5fd83722 73 }
bulmecisco 0:32ae5fd83722 74
bulmecisco 0:32ae5fd83722 75 void rtc_init()
bulmecisco 0:32ae5fd83722 76 {
bulmecisco 0:32ae5fd83722 77 pc.printf("Setting up RTC\n");
bulmecisco 0:32ae5fd83722 78
bulmecisco 0:32ae5fd83722 79 // Formatierung
bulmecisco 0:32ae5fd83722 80 // 2015/01/24
bulmecisco 0:32ae5fd83722 81 // 10:32:00
bulmecisco 0:32ae5fd83722 82
bulmecisco 0:32ae5fd83722 83 week_val = 0x04; // SAT
bulmecisco 0:32ae5fd83722 84 rtc_write(CONTROL1, 0x20); //stop
bulmecisco 0:32ae5fd83722 85 rtc_write(CONTROL2, 0x00);
bulmecisco 0:32ae5fd83722 86 rtc_write(YEARS, (0x15));
bulmecisco 0:32ae5fd83722 87 rtc_write(MONTHS, (0x03));
bulmecisco 0:32ae5fd83722 88 rtc_write(DAYS, (0x13));
bulmecisco 0:32ae5fd83722 89 rtc_write(HOURS, (0x14));
bulmecisco 0:32ae5fd83722 90 rtc_write(MINUTES, (0x47));
bulmecisco 0:32ae5fd83722 91 rtc_write(SECONDS, (0x00));
bulmecisco 0:32ae5fd83722 92 rtc_write(WEEKDAYS, week_val);
bulmecisco 0:32ae5fd83722 93 rtc_write(CLOCKOUT_FREQ, 0x00); // 0x83 = TE on & 1Hz
bulmecisco 0:32ae5fd83722 94 rtc_write(TIMER_CINTROL, 0x00);
bulmecisco 0:32ae5fd83722 95 rtc_write(CONTROL1, 0x00); //start
bulmecisco 0:32ae5fd83722 96 }
bulmecisco 0:32ae5fd83722 97
bulmecisco 0:32ae5fd83722 98 char rtc_read(char address)
bulmecisco 0:32ae5fd83722 99 {
bulmecisco 0:32ae5fd83722 100 char value;
bulmecisco 0:32ae5fd83722 101 i2c.start();
bulmecisco 0:32ae5fd83722 102 i2c.write(RTC8563_ADR);
bulmecisco 0:32ae5fd83722 103 i2c.write(address);
bulmecisco 0:32ae5fd83722 104 i2c.start();
bulmecisco 0:32ae5fd83722 105 i2c.write(RTC8563_ADR | _READ);
bulmecisco 0:32ae5fd83722 106 value = i2c.read(0);
bulmecisco 0:32ae5fd83722 107 i2c.stop();
bulmecisco 0:32ae5fd83722 108
bulmecisco 0:32ae5fd83722 109 return value;
bulmecisco 0:32ae5fd83722 110 }
bulmecisco 0:32ae5fd83722 111 void rtc_write(char address, char value)
bulmecisco 0:32ae5fd83722 112 {
bulmecisco 0:32ae5fd83722 113 i2c.start();
bulmecisco 0:32ae5fd83722 114 i2c.write(RTC8563_ADR);
bulmecisco 0:32ae5fd83722 115 i2c.write(address);
bulmecisco 0:32ae5fd83722 116 i2c.write(value);
bulmecisco 0:32ae5fd83722 117 i2c.stop();
bulmecisco 0:32ae5fd83722 118 }
bulmecisco 0:32ae5fd83722 119
bulmecisco 0:32ae5fd83722 120 // main program
bulmecisco 0:32ae5fd83722 121 int main()
bulmecisco 0:32ae5fd83722 122 {
bulmecisco 0:32ae5fd83722 123 rtc_init();
bulmecisco 0:32ae5fd83722 124 while(1) {
bulmecisco 0:32ae5fd83722 125 printTime();
bulmecisco 0:32ae5fd83722 126 wait(1);
bulmecisco 0:32ae5fd83722 127 }
bulmecisco 0:32ae5fd83722 128 }