add .gitignore

.gitignore

@@ -0,0 +1,85 @@
+# A .gitignore for Keil projects.
+# Taken mostly from http://www.keil.com/support/man/docs/uv4/uv4_b_filetypes.htm
+
+# User-specific uVision files
+*.opt
+*.uvopt
+*.uvoptx
+*.uvgui
+*.uvgui.*
+*.uvguix.*
+
+# Listing files
+#*.cod
+#*.map
+#*.m51
+#*.m66
+*._ip
+*.i
+*.lst
+*/Listings/*.txt
+
+# define exception below if needed
+*.scr
+
+# Object and HEX files
+*.axf
+*.b[0-3][0-9]
+*.hex
+*.d
+*.crf
+*.elf
+*.hex
+*.h86
+*.obj
+*.o
+*.sbr
+*.htm
+
+# Build files
+# define exception below if needed
+*.bat
+*._ia
+*.__i
+*._ii
+
+# Generated output files
+/Listings/*
+/Objects/*
+
+# Debugger files
+# define exception below if needed
+*.ini
+
+# Other files
+*.build_log.htm
+*.cdb
+*.dep
+*.ic
+*.lin
+*.lnp
+*.orc
+# define exception below if needed
+*.pack
+# define exception below if needed
+*.pdsc
+*.plg
+# define exception below if needed
+*.sct
+*.sfd
+*.sfr
+
+# Miscellaneous
+*.tra
+*.fed
+*.l1p
+*.l2p
+*.iex
+
+
+/si/
+!*.bin
+!*.map
+
+# To explicitly override the above, define any exceptions here; e.g.:
+# !my_customized_scatter_file.sct