Enhance the HotmailNotifier project so that the LEDs' individual brightness can be controlled individually via software PWM.

LUFA/ManPages/AlternativeStacks.txt

@@ -0,0 +1,37 @@
+/** \file
+ *
+ *  This file contains special DoxyGen information for the generation of the main page and other special
+ *  documentation pages. It is not a project source file.
+ */
+
+/**
+ *  \page Page_AlternativeStacks Alternative USB AVR Stacks
+ *
+ *  LUFA is not the only stack available for the USB AVRs, although it is perhaps the best (\see Page_WhyUseLUFA).
+ *  In the interests of completeness and user choice, other known USB AVR stacks are listed here.
+ *
+ *  - Atmel USB AVR Stack (<i>Atmel Inc.</i>) \n
+ *    <b>Cost:</b> Free \n
+ *    <b>License:</b> Atmel Limited License (see Atmel download for details) \n
+ *    <b>Website:</b> http://atmel.com/dyn/products/app_notes.asp?family_id=607#USB \n
+ *    <b>Description:</b> This is the official Atmel USB AVR stack, for their 8-bit USB AVR lineup. Each series of
+ *                        USB AVR is seperated into a seperate download stack, which is both AVR-GCC and IAR compatible.
+ *
+ *  - Dr. Stefan Salewski's AT90USB1287 Stack (<i>Dr. Stefan Salewski</i>) \n
+ *    <b>Cost:</b> Free \n
+ *    <b>License:</b> GPL \n
+ *    <b>Website:</b> http://www.ssalewski.de/AT90USB_firmware.html.en \n
+ *    <b>Description:</b> This is a GPL'd library specifically designed for the AT90USB1287, by Dr. Stefan Salewski, a
+ *                        German Physicist. It compiles for AVR-GCC and can potentially be modified to work on other USB
+ *                        AVR models.
+ *
+ *  - PJRC Teensy Stack (<i>Paul Stoffregen</i>) \n
+ *    <b>Cost:</b> Free \n
+ *    <b>License:</b> BSD \n
+ *    <b>Website:</b> http://www.pjrc.com/teensy/usb_debug_only.html \n
+ *    <b>Description:</b> Not so much a complete stack as a collection of USB enabled demos, this library is specifically
+ *                        designed for the PJRC Teensy line of USB AVRs, and thus may need to be modified for other USB AVR
+ *                        chips. These code samples shows the inner workings of the USB controller, without all the abstraction
+ *                        present in most other USB AVR stacks. 
+ */
+ 

LUFA/ManPages/FutureChanges.txt

@@ -17,6 +17,7 @@
   *      -# Add ability to get number of bytes not written with pipe/endpoint write routines after an error
   *      -# Add standardized descriptor names to class driver structures
   *      -# Correct mishandling of error cases in Mass Storage demos
+  *      -# Add TPI programming support to the AVRISP project
   *  - Documentation/Support
   *      -# Remake AVRStudio project files
   *      -# Add detailed overviews of how each demo works

LUFA/ManPages/MainPage.txt

@@ -33,8 +33,9 @@
  *  <b>Subsections:</b>
  *  - \subpage Page_WhyUseLUFA Why Use LUFA?
  *  - \subpage Page_LUFAvsAtmelStack How does LUFA compare to the Atmel USB AVR stack?
+ *  - \subpage Page_AlternativeStacks Alternative USB AVR Stacks
  *  - \subpage Page_Licence Project licence
- *  - \subpage Page_Donating Donating to Support this Project
+ *  - \subpage Page_Donating Donating to support this project
  *  - \subpage Page_LibraryApps Overview of included Demos, Bootloaders and Projects
  *
  *  <small><i>Logo design by EDIGMA.COM</i></small>

Projects/HotmailNotifier/HotmailNotifier.c

@@ -60,6 +60,39 @@ USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
 			},
 	};
 
+/** Counter for the software PWM */
+static volatile uint8_t SoftPWM_Count;
+
+/** Duty cycle for the first software PWM channel */
+static volatile uint8_t SoftPWM_Channel1_Duty;
+
+/** Duty cycle for the second software PWM channel */
+static volatile uint8_t SoftPWM_Channel2_Duty;
+
+/** Duty cycle for the third software PWM channel */
+static volatile uint8_t SoftPWM_Channel3_Duty;
+
+
+/** Interrupt handler for managing the software PWM channels for the LEDs */
+ISR(TIMER0_COMPA_vect, ISR_BLOCK)
+{
+	uint8_t LEDMask = LEDS_ALL_LEDS;
+
+	if (++SoftPWM_Count == 0x1F)
+	  SoftPWM_Count = 0;
+
+	if (SoftPWM_Count >= SoftPWM_Channel1_Duty)
+	  LEDMask &= ~LEDS_LED1;
+
+	if (SoftPWM_Count >= SoftPWM_Channel2_Duty)
+	  LEDMask &= ~LEDS_LED2;
+
+	if (SoftPWM_Count >= SoftPWM_Channel3_Duty)
+	  LEDMask &= ~LEDS_LED3;
+	  
+	LEDs_SetAllLEDs(LEDMask);
+}
+
 /** Standard file stream for the CDC interface when set up, so that the virtual CDC COM port can be
  *  used like any regular character stream in the C APIs
  */
@@ -77,11 +110,21 @@ int main(void)
 
 	for (;;)
 	{
-		/* Read next character - if a '1' turn on red led, if a '0' turn on green LED */
+		/* Read in next LED colour command from the host */
-		if (fgetc(&USBSerialStream) == '1')
+		uint8_t ColorUpdate = fgetc(&USBSerialStream);
-		  LEDs_SetAllLEDs(LEDS_LED3);
+		
-		else
+		/* Top 3 bits select the LED, bottom three control the brightness */
-		  LEDs_SetAllLEDs(LEDS_LED2);
+		uint8_t Channel = (ColorUpdate & 0b11100000);
+		uint8_t Duty    = (ColorUpdate & 0b00011111);
+		
+		if (Channel & (1 << 5))
+		  SoftPWM_Channel1_Duty = Duty;
+		
+		if (Channel & (1 << 6))
+		  SoftPWM_Channel2_Duty = Duty;
+
+		if (Channel & (1 << 7))
+		  SoftPWM_Channel3_Duty = Duty;
 
 		CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
 		USB_USBTask();
@@ -101,15 +144,18 @@ void SetupHardware(void)
 	/* Hardware Initialization */
 	LEDs_Init();
 	USB_Init();
+	
+	/* Timer Initialization */
+	OCR0A  = 100;
+	TCCR0A = (1 << WGM01);
+	TCCR0B = (1 << CS00);
+	TIMSK0 = (1 << OCIE0A);
 }
 
 /** Event handler for the library USB Configuration Changed event. */
 void EVENT_USB_Device_ConfigurationChanged(void)
 {
-	LEDs_SetAllLEDs(LEDS_ALL_LEDS);
+	CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
-
-	if (!(CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface)))
-	  	LEDs_SetAllLEDs(LEDS_LED1 | LEDS_LED3);
 }
 
 /** Event handler for the library USB Unhandled Control Request event. */

Projects/HotmailNotifier/WindowsApp/MailNotifier.cs

@@ -12,18 +12,20 @@ namespace TestWinForms
     public partial class MailNotifier : Form
     {
         private MessengerAPI.Messenger Messenger;
-		private RegistryKey AppRegKey;
+        private RegistryKey AppRegKey;
+
+        private const int LIGHT_MAX = 0x1F;
 
         public MailNotifier()
         {
             InitializeComponent();
 
             Messenger = new MessengerAPI.Messenger();
-			AppRegKey = Registry.CurrentUser.CreateSubKey("Software\\MailNotifier");
+            AppRegKey = Registry.CurrentUser.CreateSubKey("Software\\MailNotifier");
 
             for (int i = 1; i < 99; i++)
                 cmbComPort.Items.Add("COM" + i.ToString());
-           
+
             cmbComPort.SelectedIndex = System.Convert.ToInt32(AppRegKey.GetValue("Port", "1")) - 1;
             serSerialPort.PortName = cmbComPort.Text;
 
@@ -34,7 +36,9 @@ namespace TestWinForms
         private void MailNotifier_Load(object sender, EventArgs e)
         {
             Messenger.OnUnreadEmailChange += new MessengerAPI.DMessengerEvents_OnUnreadEmailChangeEventHandler(NewEmail);
-            NotifyLight(Messenger.get_UnreadEmailCount(MessengerAPI.MUAFOLDER.MUAFOLDER_INBOX) > 0);
+
+            bool UnreadMail = (Messenger.get_UnreadEmailCount(MessengerAPI.MUAFOLDER.MUAFOLDER_INBOX) > 0);
+            NotifyLight((!UnreadMail ? LIGHT_MAX : 0), (UnreadMail ? LIGHT_MAX : 0), 0);
 
             Hide();
         }
@@ -48,18 +52,23 @@ namespace TestWinForms
         private void NewEmail(MessengerAPI.MUAFOLDER folder, int amount, ref bool enableDefault)
         {
             if (folder == MessengerAPI.MUAFOLDER.MUAFOLDER_INBOX)
-                NotifyLight(amount > 0);
+            {
+                bool UnreadMail = (Messenger.get_UnreadEmailCount(MessengerAPI.MUAFOLDER.MUAFOLDER_INBOX) > 0);
+                NotifyLight((!UnreadMail ? LIGHT_MAX : 0), (UnreadMail ? LIGHT_MAX : 0), 0);
+            }
         }
 
-        private void NotifyLight(bool ShowGreen)
+        private void NotifyLight(int Red, int Green, int Blue)
         {
-            char[] buffer = new char[1];
+            byte[] buffer = new byte[3];
-            buffer[0] = ShowGreen ? '0' : '1';
+            buffer[0] = (byte)(0x80 | (Red & LIGHT_MAX));
+            buffer[1] = (byte)(0x40 | (Green & LIGHT_MAX));
+            buffer[2] = (byte)(0x20 | (Blue & LIGHT_MAX));
 
             try
             {
                 serSerialPort.Open();
-                serSerialPort.Write(buffer, 0, 1);
+                serSerialPort.Write(buffer, 0, buffer.Length);
                 serSerialPort.Close();
             }
             catch (Exception e)
@@ -78,15 +87,20 @@ namespace TestWinForms
             AppRegKey.SetValue("Port", cmbComPort.SelectedIndex + 1);
             serSerialPort.PortName = cmbComPort.Text;
 
-            for (int i = 0; i < 5; i++)
+            for (int i = 1; i < 10; i++)
+            {
+                NotifyLight((LIGHT_MAX / i), (LIGHT_MAX / (i * 10)), 0);
+                System.Threading.Thread.Sleep(10);
+            }
+
+            for (int i = 10; i > 0; i--)
             {
-                NotifyLight(true);
+                NotifyLight((LIGHT_MAX / i), (LIGHT_MAX / (i * 10)), 0);
-                System.Threading.Thread.Sleep(20);
+                System.Threading.Thread.Sleep(10);
-                NotifyLight(false);
-                System.Threading.Thread.Sleep(20);
             }
 
-            NotifyLight(Messenger.get_UnreadEmailCount(MessengerAPI.MUAFOLDER.MUAFOLDER_INBOX) > 0);
+            bool UnreadMail = (Messenger.get_UnreadEmailCount(MessengerAPI.MUAFOLDER.MUAFOLDER_INBOX) > 0);
+            NotifyLight((!UnreadMail ? LIGHT_MAX : 0), (UnreadMail ? LIGHT_MAX : 0), 0);
         }
 
         private void btnMinimize_Click(object sender, EventArgs e)