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

Diff: RTC8563.cpp

Revision:
2:f75062350241
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RTC8563.cpp	Thu Apr 16 10:25:33 2015 +0000
@@ -0,0 +1,63 @@
+//
+//  @ Project : RTC Date Time Clock
+//  @ File Name : RTC8563.cpp
+//  @ Date : 06.04.2015
+//  @ Author : Franz Pucher
+//  @ Copyright : pe@bulme.at
+//
+ 
+#include "mbed.h"
+#include "const.h"
+ 
+#include "RTC8563.h"
+ 
+RTC8563::RTC8563() : i2c(p28, p27)  // delete void and add call to base constructor 
+{
+    // Initialise I2C
+    i2c.frequency(40000);              
+    char init1[2] = {0x6, 0x00};
+    char init2[2] = {0x7, 0xff};
+    i2c.write(0x40, init1, 2);
+    i2c.write(0x40, init2, 2);
+}
+ 
+RTC8563::RTC8563(PinName sda, PinName scl) : i2c(sda, scl) 
+{
+   // Initialise I2C
+    i2c.frequency(40000);              
+    char init1[2] = {0x6, 0x00};
+    char init2[2] = {0x7, 0xff};
+    i2c.write(0x40, init1, 2);
+    i2c.write(0x40, init2, 2);
+}
+ 
+char RTC8563::rtc_read(char address)
+{
+    char value;
+    i2c.start();
+    i2c.write(RTC8563_ADR);
+    i2c.write(address);
+    i2c.start();
+    i2c.write(RTC8563_ADR | _READ);
+    value = i2c.read(0);
+    i2c.stop();
+ 
+    return value;
+}
+ 
+void RTC8563::rtc_write(char address, char value)
+{
+    i2c.start();
+    i2c.write(RTC8563_ADR);
+    i2c.write(address);
+    i2c.write(value);
+    i2c.stop();
+}
+ 
+void RTC8563::rtc_init()
+{
+}
+ 
+void RTC8563::rtc_alarm()
+{
+}
\ No newline at end of file