Added PC software

.gitignore

@@ -18,6 +18,7 @@ build/
 bld/
 [Bb]in/
 [Oo]bj/
+.research
 
 # Roslyn cache directories
 *.ide/
@@ -230,3 +231,4 @@ $RECYCLE.BIN/
 # Windows shortcuts
 *.lnk
 *.atsuo
+pc/hid_bootloader/test.hex

README.md

@@ -1,3 +1,10 @@
 # hid_bootloader
 
-USB HID bootloader for Atmel XMEGA devices. Needs an 8k bootloader section because the Atmel ASF USB stack is about 6k on its own.
+(C) 2015 Paul Qureshi
+Licence: GPL 3.0
+
+USB HID bootloader for Atmel XMEGA devices. Needs an 8k bootloader section because the Atmel ASF USB stack is about 6k on its own. The use of HID avoids the need for drivers on most operating systems.
+
+PC software uses HIDAPI (http://github.com/signal11/hidapi/commits/master).
+
+Currently supports 128k devices. Modify as required for other memory sizes.

firmware/build.txt

@@ -0,0 +1 @@
+Built with Atmel Studio 6.2 and ASF 6.2.1314.

pc/build.txt

@@ -0,0 +1 @@
+Built with Visual Studio 2013 Express.

pc/hid_bootloader.sln

@@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Express 2013 for Windows Desktop
+VisualStudioVersion = 12.0.31101.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "hid_bootloader", "hid_bootloader\hid_bootloader.vcxproj", "{BB669013-CF0A-4984-9E10-4C35D7EFD35B}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Release|Win32 = Release|Win32
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{BB669013-CF0A-4984-9E10-4C35D7EFD35B}.Debug|Win32.ActiveCfg = Debug|Win32
+		{BB669013-CF0A-4984-9E10-4C35D7EFD35B}.Debug|Win32.Build.0 = Debug|Win32
+		{BB669013-CF0A-4984-9E10-4C35D7EFD35B}.Release|Win32.ActiveCfg = Release|Win32
+		{BB669013-CF0A-4984-9E10-4C35D7EFD35B}.Release|Win32.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

pc/hid_bootloader/bootloader.h

@@ -0,0 +1,23 @@
+// bootloader.h
+
+#define	CMD_NOP							0x00
+#define CMD_WRITE_BUFFER				0x01
+#define CMD_READ_BUFFER					0x02
+#define CMD_ERASE_APP_SECTION			0x03
+#define CMD_READ_FLASH_CRCS				0x04
+#define CMD_READ_MCU_IDS				0x05
+#define CMD_READ_FUSES					0x06
+#define CMD_WRITE_PAGE					0x07
+#define CMD_READ_PAGE					0x08
+#define CMD_ERASE_USER_SIG_ROW			0x09
+#define CMD_WRITE_USER_SIG_ROW			0x0A
+#define CMD_READ_USER_SIG_ROW			0x0B
+
+
+#define	APP_SECTION_ERASE_TIMEOUT_MS	2000
+#define	APP_SECTION_NUM_PAGES			256
+#define	APP_SECTION_PAGE_SIZE			512
+#define	READ_FLASH_CRCS_TIMEOUT_MS		5000
+
+
+#define	HID_DATA_BYTES					32

pc/hid_bootloader/crc.cpp

@@ -0,0 +1,49 @@
+// crc.cpp
+
+#include <stdint.h>
+#include <stdlib.h>
+#include "crc.h"
+
+
+/**************************************************************************************************
+* Reverse bits in a uint32
+*/
+uint32_t reverse(uint32_t x)
+{
+	x = ((x & 0x55555555) << 1) | ((x >> 1) & 0x55555555);
+	x = ((x & 0x33333333) << 2) | ((x >> 2) & 0x33333333);
+	x = ((x & 0x0F0F0F0F) << 4) | ((x >> 4) & 0x0F0F0F0F);
+	x = (x << 24) | ((x & 0xFF00) << 8) |
+		((x >> 8) & 0xFF00) | (x >> 24);
+	return x;
+}
+
+/**************************************************************************************************
+* Slow but correct CRC32
+*/
+uint32_t crc32(uint8_t *buffer, uint32_t buffer_length)
+{
+	int32_t i, j;
+	uint32_t byte, crc;
+
+	i = 0;
+	crc = 0xFFFFFFFF;
+
+	while (buffer_length--)
+	{
+		byte = *buffer++;
+		byte = reverse(byte);
+
+		for (j = 0; j < 8; j++)
+		{
+			if ((int32_t)(crc ^ byte) < 0)
+				crc = (crc << 1) ^ 0x04C11DB7;
+			else
+				crc <<= 1;
+			byte <<= 1;
+		}
+		i++;
+	}
+
+	return reverse(~crc);
+}

pc/hid_bootloader/crc.h

@@ -0,0 +1,3 @@
+// crc.h
+
+extern uint32_t crc32(uint8_t *buffer, uint32_t buffer_length);