Update README.md

nieldk · Apr 13, 2020 · 551962c · 551962c
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commit 551962c
Showing 1 changed file with 9 additions and 4 deletions.
diff --git a/README.md b/README.md
@@ -1,5 +1,6 @@
-# avrdude
-avrdude patches for USBASP as a PDI programmer
+# avrdude for USBASP-PDI
+
+In order to use avrdude for USBASP-PDI you will also need to patch avrdude to understand how to use it.
 
 ## Instructions:
 ```
@@ -19,5 +20,9 @@ avrdude patches for USBASP as a PDI programmer
    $ ./bootstrap
    $ ./configure
    $ make
-```   
-To create a modified usbasp from a cheap usbasp china clone, look here http://szulat.blogspot.com/2012/08/atxmega-programmer-for-050.html
+
+4. Now you can run avrdude like this (flash.hex needs to be replaced with your file)
+   write flash: $ ./avrdude -c usbasp -p x32a4u -U flash:w:flash.hex:i
+   read flash to file (flash.bin is raw binary here): $ ./avrdude -c usbasp -p x32a4u -U flash:r:flash.hex:r
+
+Caveat: It seems libusb have issues on 64 bit Linux OS, so you may experience that you need to use a Windows box instead of Linux. Compilation for that is available, but I have attached a working binary in releases.