Diff: RTC.cpp

Revision:

0:34f429428d45

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RTC.cpp	Tue Mar 28 09:07:49 2017 +0000
@@ -0,0 +1,72 @@
+#include "mbed.h"
+#include "RTC.h"
+
+/* Pinfunktionen */
+I2C i2cRTC(PB_9,PB_8);
+
+/* Funktionen */
+void vfStopRTCOszi(){
+    char data[2];
+    data[0] = 0x00;
+    data[1] = 0x80;
+    i2cRTC.write(nRTCADRESS_W, data, 2);
+    }
+    
+void vfStartAndInitRTC(unsigned char bSeconds, 
+                       unsigned char bMinutes, 
+                       unsigned char bHours, 
+                       unsigned char bDay, 
+                       unsigned char bDate,
+                       unsigned char bMonth,
+                       unsigned char bYear,
+                       unsigned char bControl){
+    char acCalendar[9];
+    acCalendar[0] = 0x00;
+    acCalendar[1] = cfDezToBcd(bSeconds);
+    acCalendar[2] = cfDezToBcd(bMinutes);
+    acCalendar[3] = cfDezToBcd(bHours);
+    acCalendar[4] = cfDezToBcd(bDay);
+    acCalendar[5] = cfDezToBcd(bDate);
+    acCalendar[6] = cfDezToBcd(bMonth);
+    acCalendar[7] = cfDezToBcd(bYear);
+    acCalendar[8] = cfDezToBcd(bControl);    
+    i2cRTC.write(nRTCADRESS_W, acCalendar, 9);                           
+    }
+void vfSetTime(unsigned char bSeconds,
+               unsigned char bMinutes,
+               unsigned char bHours){
+    char acTime[4];
+    acTime[0] = 0x00;
+    acTime[1] = cfDezToBcd(bSeconds);               
+    acTime[2] = cfDezToBcd(bMinutes);
+    acTime[3] = cfDezToBcd(bHours);
+    i2cRTC.write(nRTCADRESS_W, acTime, 4);
+    }    
+
+    
+void vfGetTime(unsigned char *bSeconds,
+               unsigned char *bMinutes,
+               unsigned char *bHours){
+    char time[1];
+    char data[3];
+    time[0] = 0x00;     //Adresse des Sekunden-Registers
+    i2cRTC.write(nRTCADRESS_W, time, 1);
+    i2cRTC.read(nRTCADRESS_R, data, 3);
+    *bSeconds = bfBcdToDez((unsigned char)data[0]);
+    *bMinutes = bfBcdToDez((unsigned char)data[1]);
+    *bHours = bfBcdToDez((unsigned char)data[2]);                   
+    }
+    
+unsigned char bfBcdToDez(unsigned char bBcdValue){
+    unsigned char bDezValue = 0;
+    bDezValue = bBcdValue & 0x0F;
+    bDezValue = bDezValue + ((bBcdValue >> 4) * 10);
+    return bDezValue;
+    }
+    
+char cfDezToBcd(unsigned char bDezValue){
+    char cBcdValue = 0;
+    cBcdValue = bDezValue % 10;
+    cBcdValue = cBcdValue | (((bDezValue - (bDezValue%10)) / 10) << 4);
+    return cBcdValue;
+    }
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