Initial dump.

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto
+
+# Custom for Visual Studio
+*.cs     diff=csharp
+*.sln    merge=union
+*.csproj merge=union
+*.vbproj merge=union
+*.fsproj merge=union
+*.dbproj merge=union
+
+# Standard to msysgit
+*.doc	 diff=astextplain
+*.DOC	 diff=astextplain
+*.docx diff=astextplain
+*.DOCX diff=astextplain
+*.dot  diff=astextplain
+*.DOT  diff=astextplain
+*.pdf  diff=astextplain
+*.PDF	 diff=astextplain
+*.rtf	 diff=astextplain
+*.RTF	 diff=astextplain

.gitignore

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+#################
+## Eclipse
+#################
+
+*.pydevproject
+.project
+.metadata
+bin/
+tmp/
+*.tmp
+*.bak
+*.swp
+*~.nib
+local.properties
+.classpath
+.settings/
+.loadpath
+
+# External tool builders
+.externalToolBuilders/
+
+# Locally stored "Eclipse launch configurations"
+*.launch
+
+# CDT-specific
+.cproject
+
+# PDT-specific
+.buildpath
+
+
+#################
+## Visual Studio
+#################
+
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.sln.docstates
+
+# Build results
+[Dd]ebug/
+[Rr]elease/
+*_i.c
+*_p.c
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.vspscc
+.builds
+*.dotCover
+
+## TODO: If you have NuGet Package Restore enabled, uncomment this
+#packages/
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opensdf
+*.sdf
+
+# Visual Studio profiler
+*.psess
+*.vsp
+
+# ReSharper is a .NET coding add-in
+_ReSharper*
+
+# Installshield output folder
+[Ee]xpress
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish
+
+# Others
+[Bb]in
+[Oo]bj
+sql
+TestResults
+*.Cache
+ClientBin
+stylecop.*
+~$*
+*.dbmdl
+Generated_Code #added for RIA/Silverlight projects
+
+# Backup & report files from converting an old project file to a newer
+# Visual Studio version. Backup files are not needed, because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+
+
+
+############
+## Windows
+############
+
+# Windows image file caches
+Thumbs.db
+
+# Folder config file
+Desktop.ini
+
+
+#############
+## Python
+#############
+
+*.py[co]
+
+# Packages
+*.egg
+*.egg-info
+dist
+build
+eggs
+parts
+bin
+var
+sdist
+develop-eggs
+.installed.cfg
+
+# Installer logs
+pip-log.txt
+
+# Unit test / coverage reports
+.coverage
+.tox
+
+#Translations
+*.mo
+
+#Mr Developer
+.mr.developer.cfg
+
+# Mac crap
+.DS_Store

I2C_Slave_Tiny.ino

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+
+#define F_CPU 8000000
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+#include "TinyWireS.h"
+//#include "usiTwiSlave.h"
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+#define I2C_SLAVE_ADDR  0x2F
+#define PIN_2__PB_3     3   // ATtiny Pin 2 // used by adc3
+#define PIN_3__PB_4     4   // ATtiny Pin 3 // used as pwm
+#define PIN_6__PB_1     1   // ATtiny Pin 6
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+bool          bTrigger[] = {false, false};
+unsigned int  uiPwm[]    = {0, 0};
+uint8_t       u8Received = 0;
+uint8_t       u8Command  = 0;
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+void initADC() {
+
+  ADCSRA =  (1 << ADPS2) |    // set prescaler to 64, bit 2 ~~ for 8MHz below is valid
+            (1 << ADPS1) |    // set prescaler to 64, bit 1 ~~ 1 1 0 = ps64 = 125kHz
+            (0 << ADPS0);     // set prescaler to 64, bit 0 ~~ 1 1 1 = ps128 = 62.5kHz  
+
+  ADCSRA |= (1 << ADATE);     // set auto trigger enable
+  ADCSRA |= (0 << ADTS2) |    // set free running mode, bit 2   
+            (0 << ADTS1) |    // set free running mode, bit 1   
+            (0 << ADTS0);     // set free running mode, bit 0   
+
+
+  ADMUX =   (1 << REFS2) |    // Sets ref. voltage to VCC, bit 3 ~~ i2c makes use of ADREF pin, only internal vref can be used
+            (1 << REFS1) |    // Sets ref. voltage to VCC, bit 1 ~~ 0 1 0 Internal 1.1V Voltage Reference.
+            (0 << REFS0);     // Sets ref. voltage to VCC, bit 0 ~~ 1 1 0 Internal 2.56V Voltage Reference without external bypass capacitor, disconnected from PB0 (AREF)
+
+  ADMUX =   (0 << MUX3)  |    // MUX bit 3 ~~ 0 0 0 0 = ADC0 --> PB4 | Pin3, needs RESET fuse disabled, mcu can then not be reprogrammed.
+            (0 << MUX2)  |    // MUX bit 2 ~~ 0 0 0 1 = ADC1 --> PB2 | Pin7
+            (1 << MUX1)  |    // MUX bit 1 ~~ 0 0 1 0 = ADC2 --> PB4 | Pin3
+            (1 << MUX0);      // MUX bit 0 ~~ 0 0 1 1 = ADC3 --> PB3 | Pin2
+
+  ADCSRA |= (1 << ADEN);      // Enable ADC
+
+  ADCSRA |= (1 << ADSC);      // start ADC measurement
+  ADCL;ADCH;                  // The first ADC conversion result after switching voltage reference source may be inaccurate, and the user is advised to discard this result.
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+void initPWM() {
+
+  //DDRB |= (1 << PB4) | (1 << PB1); // same as pinMode(PIN_3__PB_4, OUTPUT); ??
+
+  // PWM pins are 3 (OC1B), 5 (OC0A), and 6 (OC0B)
+
+  TCCR0A =
+      (0 << COM0A1) |   // set OC0A on compare match, clear at BOTTOM
+      (0 << COM0A0) |   // set OC0A on compare match, clear at BOTTOM
+      (1 << COM0B1) |   // set OC0B on compare match, clear at BOTTOM
+      (0 << COM0B0) |   // set OC0B on compare match, clear at BOTTOM
+      //(-)
+      //(-)
+      (1 << WGM01)  |   // 0 1 1 = Fast PWM mode (1/3)
+      (1 << WGM00);     // 0 1 1 = Fast PWM mode (2/3)
+
+  // 1001 0001
+
+  TCCR0B =
+      (0 << FOC0A) |
+      (0 << FOC0B) |
+      //(-)
+      //(-)
+      (0 << WGM02)  |   // 0 1 1 = Fast PWM mode (3/3)
+      (1 << CS02)   |
+      (0 << CS01)   |
+      (0 << CS00);
+      // 0 0 1 -- No prescaling)
+      // 0 1 0 -- 8 (From prescaler)
+      // 0 1 1 -- 64 (From prescaler)
+      // 1 0 0 -- 256 (From prescaler)
+      // 1 0 1 -- 1024 (From prescaler)
+
+  TCCR1 = 0<<PWM1A | 0<<COM1A0 | 1<<CS10;
+  GTCCR = 1<<PWM1B | 2<<COM1B0;
+  /*
+  TIMSK = 
+      //(-)
+      (0 << OCIE1A) | 
+      (0 << OCIE1B) | 
+      (0 << OCIE0A) |
+      (1 << OCIE0B) | 
+      (0 << TOIE1);
+      (1 << TOIE0);
+      //(-)
+  */
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+void setup(){
+  initPWM();
+  initADC();
+  pinMode(PIN_3__PB_4, OUTPUT); // yellow led, debugging (near ground), pwm
+  pinMode(PIN_6__PB_1, OUTPUT); // green led, programming, pwm value set
+  TinyWireS.begin(I2C_SLAVE_ADDR);
+}
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+void loop() {
+
+  if (TinyWireS.available()) {
+
+    //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    u8Command = TinyWireS.receive();
+    //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    if (u8Command == 0x01) {
+      //digitalWrite(PIN_6__PB_1,HIGH);
+      u8Received = TinyWireS.receive();
+      uiPwm[0] = (TinyWireS.receive() << 8) + u8Received;
+      OCR0B = lowByte(255 - uiPwm[0]);
+      //digitalWrite(PIN_6__PB_1,LOW);
+    }
+    //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    else if (u8Command == 0x02) {
+      //digitalWrite(PIN_6__PB_1,HIGH);
+      u8Received = TinyWireS.receive();
+      uiPwm[1] = (TinyWireS.receive() << 8) + u8Received;
+      OCR1B = lowByte(uiPwm[1]);
+      //digitalWrite(PIN_6__PB_1,LOW);
+    }
+    //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    else if (u8Command == 0x03) {
+      // single conversion on ADC 2 --->
+      /* //<--- Free Running Conversion
+      ADMUX =   (0 << MUX3)  |    // MUX bit 3 ~~ 0 0 0 0 = ADC0 --> PB4 | Pin3, needs RESET fuse disabled, mcu can then not be reprogrammed.
+                (0 << MUX2)  |    // MUX bit 2 ~~ 0 0 0 1 = ADC1 --> PB2 | Pin7
+                (1 << MUX1)  |    // MUX bit 1 ~~ 0 0 1 0 = ADC2 --> PB4 | Pin3
+                (1 << MUX0);      // MUX bit 0 ~~ 0 0 1 1 = ADC3 --> PB3 | Pin2
+      ADCSRA |= (1 << ADSC); // start ADC measurement, needed when auto trigger enable is 0 (= single conversion)
+      */ //<--- Free Running Conversion
+      // <--- Single Conversion on ADC 2
+
+      /*
+      TinyWireS.send(ADCL);  // read lower byte
+      TinyWireS.send(ADCH);  // read upper byte
+      */
+
+        TinyWireS.send(lowByte(uiPwm[0]));
+        TinyWireS.send(highByte(uiPwm[0]));
+    }
+    //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    else if (u8Command == 0x04) {
+      /*
+        // single conversion on ADC 0 --->
+        / * //<--- Free Running Conversion
+        ADMUX =   (0 << MUX3)  |    // MUX bit 3 ~~ 0 0 0 0 = ADC0 --> PB4 | Pin3, needs RESET fuse disabled, mcu can then not be reprogrammed.
+                  (0 << MUX2)  |    // MUX bit 2 ~~ 0 0 0 1 = ADC1 --> PB2 | Pin7
+                  (0 << MUX1)  |    // MUX bit 1 ~~ 0 0 1 0 = ADC2 --> PB4 | Pin3
+                  (0 << MUX0);      // MUX bit 0 ~~ 0 0 1 1 = ADC3 --> PB3 | Pin2
+        ADCSRA |= (1 << ADSC); // start ADC measurement, needed when auto trigger enable is 0 (= single conversion)
+        * / //<--- Free Running Conversion
+        // <--- single conversion on ADC 0
+        
+        TinyWireS.send(ADCL);  // read lower byte
+        TinyWireS.send(ADCH);  // read upper byte
+      */
+
+      TinyWireS.send(lowByte(uiPwm[1]));
+      TinyWireS.send(highByte(uiPwm[1]));
+    }
+    //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+  }
+}