first working version, but still prints a junkdata after the text, formatstrings doesn't work

src/Dezibot.cpp

@@ -15,10 +15,11 @@
 Dezibot::Dezibot():multiColorLight(){};
 
 void Dezibot::begin(void) {
-    infraredLight.begin();
-    lightDetection.begin();    
-    motion.begin();
-    multiColorLight.begin();
+    //infraredLight.begin();
+    //lightDetection.begin();    
+    //motion.begin();
+    //multiColorLight.begin();
+    display.begin();
 };
 
 

src/Dezibot.h

@@ -17,6 +17,7 @@
 #include "multiColorLight/MultiColorLight.h"
 #include "motionDetection/MotionDetection.h"
 #include "infraredLight/InfraredLight.h"
+#include "display/Display.h"
 
 
 class Dezibot {
@@ -30,6 +31,7 @@ public:
     MultiColorLight multiColorLight;
     MotionDetection motionDetection;
     InfraredLight infraredLight;
+    Display display;
     void begin(void);
 /*
 Display display

src/display/Display.cpp

@@ -1,75 +1,77 @@
 #include "Display.h"
 #include "CharTable.h"
+#include "Wire.h"
 
 void Display::sendDisplayCMD(uint8_t cmd){
+    Wire.beginTransmission(DisplayAdress);
+    Wire.write(cmd_byte);
+    Wire.write(cmd);
+    Wire.endTransmission();
 
 };
 void Display::begin(void){
     //TODO: change pin to #defines, first check if Wire.begin was already called
     Wire.begin(1,2);
     //set Mux Ratio
-    sendDisplayCMD(client,muxRatio);
-    sendDisplayCMD(client,0x3f);
+    sendDisplayCMD(muxRatio);
+    sendDisplayCMD(0x3f);
 
-    sendDisplayCMD(client,setOffset);
-    sendDisplayCMD(client,0x00);
+    sendDisplayCMD(setOffset);
+    sendDisplayCMD(0x00);
 
-    sendDisplayCMD(client, setStartLine);
+    sendDisplayCMD(setStartLine);
 
 
     /*x-flip*/
-    //sendDisplayCMD(client,setSegmentMap);
-    sendDisplayCMD(client, setSegmentReMap);
+    //sendDisplayCMD(setSegmentMap);
+    //sendDisplayCMD(setSegmentReMap);
     
     /*mapping of the rows*/
-    sendDisplayCMD(client,setComHardwareConfig);
-    sendDisplayCMD(client,0x10);
+    //sendDisplayCMD(setComHardwareConfig);
+    //sendDisplayCMD(0x10);
 
     /*y-flip*/
-    //sendDisplayCMD(client, setComDirectionNormal);
-    sendDisplayCMD(client, setComDirectionFlipped);
+    //sendDisplayCMD( setComDirectionNormal);
+    //sendDisplayCMD(setComDirectionFlipped);
 
-    sendDisplayCMD(client, setContrast);
-    sendDisplayCMD(client, 0x7f);
+    //sendDisplayCMD(setContrast);
+    //sendDisplayCMD(0x7f);
 
-    sendDisplayCMD(client,stopCompleteOn);
+    sendDisplayCMD(stopCompleteOn);
 
     /*which pixels are bright: normal = 1s are bright, inverese= 0s are bright*/
-    sendDisplayCMD(client, setNormalMode);
-    //sendDisplayCMD(client, setInverseMode);
+    sendDisplayCMD( setNormalMode);
+    //sendDisplayCMD( setInverseMode);
 
-    sendDisplayCMD(client, setOscFreq);
-    sendDisplayCMD(client,0x80);
+    sendDisplayCMD( setOscFreq);
+    sendDisplayCMD(0x80);
 
-    sendDisplayCMD(client,setChargePump);
-    sendDisplayCMD(client,0x14);
+    sendDisplayCMD(setChargePump);
+    sendDisplayCMD(0x14);
 
-    sendDisplayCMD(client, activateDisplay);
+    sendDisplayCMD(activateDisplay);
+    for(int i = 0;i<128;i++){
+    Wire.beginTransmission(DisplayAdress);
+         Wire.write(0x00);
+    Wire.endTransmission();
+    }
     return;
 };
 void Display::clear(void){
     
     int index=0;
-    sendDisplayCMD(client,addressingMode);
-    sendDisplayCMD(client,0x00); //horizontal
-    printk(KERN_ALERT "DEBUG: Passed %s %d \n",__FUNCTION__,__LINE__);
-    sendDisplayCMD(client,colRange);
-    sendDisplayCMD(client,0x00);
-    sendDisplayCMD(client,0x7f);
-    printk(KERN_ALERT "DEBUG: Passed %s %d \n",__FUNCTION__,__LINE__);
-    sendDisplayCMD(client,pageRange);
-    sendDisplayCMD(client,0x00);
-    sendDisplayCMD(client,0x07);
-    printk(KERN_ALERT "DEBUG: Passed %s %d \n",__FUNCTION__,__LINE__);
-    i2c_data[0]=data_byte;
-    for(index=1;index<128*8;index++){i2c_data[index]=0x00;}
-    printk(KERN_ALERT "DEBUG: Passed %s %d \n",__FUNCTION__,__LINE__);
-    Wire.beginTransmission(DisplayAdress);
-    Wire.write(data_byte);
-    Wire.endTransmission();
+    sendDisplayCMD(addressingMode);
+    sendDisplayCMD(0x00); //horizontal
+    sendDisplayCMD(colRange);
+    sendDisplayCMD(0x00);
+    sendDisplayCMD(0x7f);
+    sendDisplayCMD(pageRange);
+    sendDisplayCMD(0x00);
+    sendDisplayCMD(0x07);
     //Wire only has a 32-Byte Buffer for transmission
     for(uint index= 0; index<4;index++){
         Wire.beginTransmission(DisplayAdress);
+        Wire.write(data_byte);
         for(uint bufferIndex = 0;bufferIndex<32;bufferIndex++){
             Wire.write(0x00);
         }
@@ -83,7 +85,7 @@ void Display::clear(void){
  * 
  * @param charAmount how many chars were added 
  */
-void Display::updateLine(int charAmount)
+void Display::updateLine(uint charAmount)
 {
     if(charAmount+this->charsOnCurrLine>16)
     {
@@ -92,16 +94,15 @@ void Display::updateLine(int charAmount)
     }
     else
     {
-        this->charsOnCurrLine = this->charAmount+this->charsOnCurrLine;
+        this->charsOnCurrLine = charAmount+this->charsOnCurrLine;
     }
 }
 
 
 void Display::print(char *value){
-    int i = 0;
     char nextchar;
 	/* write data to the buffer */
-    while(value && value != '\0') //check if pointer is still valid and string is not terminated 
+    while(value && value != "\0") //check if pointer is still valid and string is not terminated 
         {
 	        //check if input is a predefined cmd
             if(*value=='/')
@@ -109,7 +110,7 @@ void Display::print(char *value){
                 nextchar = *value+1;
                 if(nextchar=='c')
                 {
-                    Display::clearDisplay();
+                    this->clear();
                     this->currLine = 0; 
                     this->charsOnCurrLine = 0;
                 }
@@ -122,7 +123,7 @@ void Display::print(char *value){
                     }
                     while(this->charsOnCurrLine<17)
                     {
-                        Wire.beginTransmission(Display_Adress);
+                        Wire.beginTransmission(DisplayAdress);
                         for(int i = 0;i<9;i++){
                             Wire.write(font8x8_colwise[0][i]);
                         }
@@ -134,7 +135,6 @@ void Display::print(char *value){
                         }
                     }
                 }
-                i=i+1;
             }
             else
             {
@@ -145,10 +145,8 @@ void Display::print(char *value){
                 }
                 Wire.endTransmission();
             }
-                      
+            value++;     
         }
-   // }
-	
 	return;
 
 };

src/display/DisplayCMDs.h

@@ -21,4 +21,4 @@
 #define colRange 0x21
 #define pageRange 0x22
 
-#define DisplayAdress
+#define DisplayAdress 0x3C