Fix Printer bootloader top level documentation.

[pub/lufa.git] / Bootloaders / Incomplete / MassStorage / BootloaderMassStorage.c

diff --git a/Bootloaders/Incomplete/MassStorage/BootloaderMassStorage.c b/Bootloaders/Incomplete/MassStorage/BootloaderMassStorage.c
index 14d1eb0..9303471 100644 (file)
--- a/Bootloaders/Incomplete/MassStorage/BootloaderMassStorage.c
+++ b/Bootloaders/Incomplete/MassStorage/BootloaderMassStorage.c
@@ -30,8 +30,7 @@
 
 /** \file
  *
- *  Main source file for the MassStorage demo. This file contains the main tasks of
- *  the demo and is responsible for the initial application hardware configuration.
+ *  Main source file for the Mass Storage class bootloader. This file contains the complete bootloader logic.
  */
 
 #include "BootloaderMassStorage.h"
@@ -62,8 +61,8 @@ USB_ClassInfo_MS_Device_t Disk_MS_Interface =
        };
 
 
-/** Main program entry point. This routine contains the overall program flow, including initial
- *  setup of all components and the main program loop.
+/** Main program entry point. This routine configures the hardware required by the application, then
+ *  enters a loop to run the application tasks in sequence.
  */
 int main(void)
 {
@@ -96,17 +95,31 @@ void SetupHardware(void)
        /* Hardware Initialization */
        LEDs_Init();
        USB_Init();
+
+       /* Bootloader active LED toggle timer initialization */
+       TIMSK1 = (1 << TOIE1);
+       TCCR1B = ((1 << CS11) | (1 << CS10));
 }
 
-/** Event handler for the library USB Connection event. */
+/** ISR to periodically toggle the LEDs on the board to indicate that the bootloader is active. */
+ISR(TIMER1_OVF_vect, ISR_BLOCK)
+{
+       LEDs_ToggleLEDs(LEDS_LED1 | LEDS_LED2);
+}
+
+/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs. */
 void EVENT_USB_Device_Connect(void)
 {
+       /* Indicate USB enumerating */
        LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 }
 
-/** Event handler for the library USB Disconnection event. */
+/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via
+ *  the status LEDs and stops the Mass Storage management task.
+ */
 void EVENT_USB_Device_Disconnect(void)
 {
+       /* Indicate USB not ready */
        LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 }
 
@@ -115,8 +128,10 @@ void EVENT_USB_Device_ConfigurationChanged(void)
 {
        bool ConfigSuccess = true;
 
+       /* Setup Mass Storage Data Endpoints */
        ConfigSuccess &= MS_Device_ConfigureEndpoints(&Disk_MS_Interface);
 
+       /* Indicate endpoint configuration success or failure */
        LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
 }