X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/1eefbf9041ba71667a0dcf351685512db1244499..3642ea0b9715cdf0196b10c9fc97898940eaefa6:/Bootloaders/CDC/BootloaderCDC.c

diff --git a/Bootloaders/CDC/BootloaderCDC.c b/Bootloaders/CDC/BootloaderCDC.c
index a6055d302..cb6a980cc 100644
--- a/Bootloaders/CDC/BootloaderCDC.c
+++ b/Bootloaders/CDC/BootloaderCDC.c
@@ -1,13 +1,13 @@
 /*
              LUFA Library
-     Copyright (C) Dean Camera, 2012.
+     Copyright (C) Dean Camera, 2015.
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*
-  Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2015  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 
   Permission to use, copy, modify, distribute, and sell this
   software and its documentation for any purpose is hereby granted
@@ -18,7 +18,7 @@
   advertising or publicity pertaining to distribution of the
   software without specific, written prior permission.
 
-  The author disclaim all warranties with regard to this
+  The author disclaims all warranties with regard to this
   software, including all implied warranties of merchantability
   and fitness.  In no event shall the author be liable for any
   special, indirect or consequential damages or any damages
@@ -72,7 +72,17 @@ void Application_Jump_Check(void)
 {
 	bool JumpToApplication = false;
 
-	#if ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
+	#if (BOARD == BOARD_LEONARDO)
+		/* Enable pull-up on the IO13 pin so we can use it to select the mode */
+		PORTC |= (1 << 7);
+		Delay_MS(10);
+
+		/* If IO13 is not jumpered to ground, start the user application instead */
+		JumpToApplication = ((PINC & (1 << 7)) != 0);
+
+		/* Disable pull-up after the check has completed */
+		PORTC &= ~(1 << 7);
+	#elif ((BOARD == BOARD_XPLAIN) || (BOARD == BOARD_XPLAIN_REV1))
 		/* Disable JTAG debugging */
 		JTAG_DISABLE();
 
@@ -81,22 +91,42 @@ void Application_Jump_Check(void)
 		Delay_MS(10);
 
 		/* If the TCK pin is not jumpered to ground, start the user application instead */
-		JumpToApplication |= ((PINF & (1 << 4)) != 0);
+		JumpToApplication = ((PINF & (1 << 4)) != 0);
 
 		/* Re-enable JTAG debugging */
 		JTAG_ENABLE();
+	#else
+		/* Check if the device's BOOTRST fuse is set */
+		if (boot_lock_fuse_bits_get(GET_HIGH_FUSE_BITS) & FUSE_BOOTRST)
+		{
+			/* If the reset source was not an external reset or the key is correct, clear it and jump to the application */
+			if (!(MCUSR & (1 << EXTRF)) || (MagicBootKey == MAGIC_BOOT_KEY))
+			  JumpToApplication = true;
+
+			/* Clear reset source */
+			MCUSR &= ~(1 << EXTRF);
+		}
+		else
+		{
+			/* If the reset source was the bootloader and the key is correct, clear it and jump to the application;
+			 * this can happen in the HWBE fuse is set, and the HBE pin is low during the watchdog reset */
+			if ((MCUSR & (1 << WDRF)) && (MagicBootKey == MAGIC_BOOT_KEY))
+				JumpToApplication = true;
+
+			/* Clear reset source */
+			MCUSR &= ~(1 << WDRF);
+		}
 	#endif
 
-	/* If the reset source was the bootloader and the key is correct, clear it and jump to the application */
-	if ((MCUSR & (1 << WDRF)) && (MagicBootKey == MAGIC_BOOT_KEY))
-	  JumpToApplication |= true;
+	/* Don't run the user application if the reset vector is blank (no app loaded) */
+	bool ApplicationValid = (pgm_read_word_near(0) != 0xFFFF);
 
 	/* If a request has been made to jump to the user application, honor it */
-	if (JumpToApplication)
+	if (JumpToApplication && ApplicationValid)
 	{
 		/* Turn off the watchdog */
-		MCUSR &= ~(1<<WDRF);
-		wdt_disable(); 
+		MCUSR &= ~(1 << WDRF);
+		wdt_disable();
 
 		/* Clear the boot key and jump to the user application */
 		MagicBootKey = 0;
@@ -127,9 +157,12 @@ int main(void)
 		USB_USBTask();
 	}
 
+	/* Wait a short time to end all USB transactions and then disconnect */
+	_delay_us(1000);
+
 	/* Disconnect from the host - USB interface will be reset later along with the AVR */
 	USB_Detach();
-	
+
 	/* Unlock the forced application start mode of the bootloader if it is restarted */
 	MagicBootKey = MAGIC_BOOT_KEY;
 
@@ -223,21 +256,29 @@ void EVENT_USB_Device_ControlRequest(void)
 			}
 
 			break;
+        case CDC_REQ_SetControlLineState:
+	        if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
+	        {
+	            Endpoint_ClearSETUP();
+	            Endpoint_ClearStatusStage();
+	        }
+
+	        break;
 	}
 }
 
 #if !defined(NO_BLOCK_SUPPORT)
 /** Reads or writes a block of EEPROM or FLASH memory to or from the appropriate CDC data endpoint, depending
- *  on the AVR910 protocol command issued.
+ *  on the AVR109 protocol command issued.
  *
- *  \param[in] Command  Single character AVR910 protocol command indicating what memory operation to perform
+ *  \param[in] Command  Single character AVR109 protocol command indicating what memory operation to perform
  */
 static void ReadWriteMemoryBlock(const uint8_t Command)
 {
 	uint16_t BlockSize;
 	char     MemoryType;
 
-	bool     HighByte = false;
+	uint8_t  HighByte = 0;
 	uint8_t  LowByte  = 0;
 
 	BlockSize  = (FetchNextCommandByte() << 8);
@@ -394,7 +435,7 @@ static void WriteNextResponseByte(const uint8_t Response)
 	Endpoint_Write_8(Response);
 }
 
-/** Task to read in AVR910 commands from the CDC data OUT endpoint, process them, perform the required actions
+/** Task to read in AVR109 commands from the CDC data OUT endpoint, process them, perform the required actions
  *  and send the appropriate response back to the host.
  */
 static void CDC_Task(void)
@@ -442,7 +483,7 @@ static void CDC_Task(void)
 	}
 	else if (Command == AVR109_COMMAND_SetCurrentAddress)
 	{
-		/* Set the current address to that given by the host */
+		/* Set the current address to that given by the host (translate 16-bit word address to byte address) */
 		CurrAddress   = (FetchNextCommandByte() << 9);
 		CurrAddress  |= (FetchNextCommandByte() << 1);
 
@@ -460,7 +501,7 @@ static void CDC_Task(void)
 		for (uint8_t CurrByte = 0; CurrByte < 7; CurrByte++)
 		  WriteNextResponseByte(SOFTWARE_IDENTIFIER[CurrByte]);
 	}
-	else if (Command == AVR109_COMMAND_ReadBootloaderVersion)
+	else if (Command == AVR109_COMMAND_ReadBootloaderSWVersion)
 	{
 		WriteNextResponseByte('0' + BOOTLOADER_VERSION_MAJOR);
 		WriteNextResponseByte('0' + BOOTLOADER_VERSION_MINOR);