Diff: rtc.cpp

Revision:

0:397b5462e6d7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rtc.cpp	Thu Nov 15 06:55:25 2018 +0000
@@ -0,0 +1,123 @@
+/***********************************
+name:   rtc.cpp    Version: 0.2
+author: PE HTL BULME
+email:  pe@bulme.at
+description:
+    Implementation portion of class rtc 
+    real time clock on himbed0
+      
+***********************************/
+
+#include "mbed.h"
+#include "const.h"
+#include "rtc.h"
+
+RTC::~RTC()
+{}
+
+#ifdef TARGET_LPC11XX
+// Default constructor
+RTC::RTC() : i2c(p28, p27)              // HIMBED M0
+{
+    i2c.frequency(40000);               // I2C Frequenz 40kHz
+    char init1[2] = {0x6, 0x00};
+    char init2[2] = {0x7, 0xff};
+    i2c.write(0x40, init1, 2);
+    i2c.write(0x40, init2, 2);
+
+}
+
+// Param. constructor with pins sda and scl
+RTC::RTC(PinName sda, PinName scl) :  i2c(sda, scl)  //_sda(sda), _scl(scl)   // no I2C default constructor
+{
+    i2c.frequency(40000);               // I2C Frequenz 40kHz
+    char init1[2] = {0x6, 0x00};
+    char init2[2] = {0x7, 0xff};
+    i2c.write(0x40, init1, 2);
+    i2c.write(0x40, init2, 2);
+}
+
+char RTC::rtc_read(char address)
+{
+    char value;
+    i2c.start();
+    //i2c.write(RTC8563_ADR_RD, &address, true);
+    i2c.write(RTC8563_ADR_WR);
+    i2c.write(address);
+    i2c.start();
+    i2c.write(RTC8563_ADR_RD);
+    value = i2c.read(0);
+    i2c.stop();
+    return value;
+}
+void RTC::rtc_write(char address, char value)
+{
+    i2c.start();
+    //i2c.write(RTC8563_ADR_WR, &address, value, true);
+    i2c.write(RTC8563_ADR_WR);
+    i2c.write(address);
+    i2c.write(value);
+    i2c.stop();
+}
+
+void RTC::rtc_init()
+{
+    // Format
+    // 2015/03/31
+    // 22:10:00
+
+    week_val = 0x01;                // Tu
+    rtc_write(CONTROL1, 0x20);      // stop
+    rtc_write(CONTROL2, 0x00);
+    rtc_write(YEARS, (0x15));
+    rtc_write(MONTHS, (0x03));
+    rtc_write(DAYS, (0x31));
+    rtc_write(HOURS, (0x22));
+    rtc_write(MINUTES, (0x10));
+    rtc_write(SECONDS, (0x00));
+    rtc_write(WEEKDAYS, week_val);
+    rtc_write(CLOCKOUT_FREQ, 0x00); // 0x83 = TE on & 1Hz
+    rtc_write(TIMER_CINTROL, 0x00);
+    rtc_write(CONTROL1, 0x00);      // start
+}
+
+void RTC::rtc_alarm()   // Setting up RTC alarm
+{
+    rtc_write(CONTROL1, 0x20);      // stop
+    rtc_write(CONTROL2, 0x02);      // AIE - alarm interrupt enabled
+    rtc_write(DAY_ALARM, (0x80) );
+    rtc_write(HOUR_ALARM, (0x97));
+    rtc_write(MINUTE_ALARM, (0x02));
+    rtc_write(WEEKDAY_ALARM, (0x80));
+    rtc_write(CONTROL1, 0x00);      // start
+}
+#else
+
+// Default constructor
+RTC::RTC() 
+{}
+RTC::RTC(PinName sda, PinName scl) // :  i2c(sda, scl)  //_sda(sda), _scl(scl)   // no I2C default constructor
+{}
+
+char RTC::rtc_read(char address) {
+    return 0x21;
+}
+
+void RTC::rtc_write(char address, char value)
+{ }
+
+void RTC::rtc_init()
+{
+    // Format
+    // 2015/03/31
+    // 22:10:00
+}
+
+void RTC::rtc_alarm()   // Setting up RTC alarm
+{}
+#endif
+
+//-----------------INTERNAL USE ONLY ----------------------------
+void RTC::error()
+{
+}
\ No newline at end of file