path: root/digital/dev2/doc/dev2.txt
diff options
authorNicolas Schodet2010-07-01 21:52:10 +0200
committerNicolas Schodet2010-07-01 21:52:10 +0200
commitbb2e0fc1fbe21b2ef4128fa666922df63768acd4 (patch)
tree459d9e9a30e1559327997d1bb946ec27cccc76ab /digital/dev2/doc/dev2.txt
parentae5bd4f87a9d9405520b8d365c293bea6eda9dbf (diff)
digital/dev2/doc: document dev2 usage, closes #132
Diffstat (limited to 'digital/dev2/doc/dev2.txt')
1 files changed, 31 insertions, 0 deletions
diff --git a/digital/dev2/doc/dev2.txt b/digital/dev2/doc/dev2.txt
index 3ae9a0e2..0c3b7f28 100644
--- a/digital/dev2/doc/dev2.txt
+++ b/digital/dev2/doc/dev2.txt
@@ -13,6 +13,9 @@ serial ports, you should load the generic serial driver:
Then look at kernel messages to locate the new serial devices (/dev/ttyUSBx).
+If two functions are presents in the same firmware, two serial devices should
+be detected.
Controlling the output
@@ -24,9 +27,37 @@ You can also use it to deselect an output so that no current flows into it.
It can also be used to control GPIO when available in the loaded firmware.
+To select an output:
+ -s *1 to 4*
+To make all output unconnected:
+ -u
+Before powering off connected boards, you should deselect outputs so that it
+is not powered by dev2 I/O pins.
About the vendor and product ID
They come from LUFA, the USB library we use for dev2. This is not supposed to
be done in a commercial USB product, but this is OK for hobbyists. That's why
dev2ctl parses the product name to make sure it talks to the right device.
+Changing firmware
+The dev2 firmware can be updated using the USB bootloader. First of all,
+switch the board in DFU mode:
+ --dfu
+Then you can use a DFU programmer to update the firmware. For example:
+ dfu-programmer at90usb162 erase
+ dfu-programmer at90usb162 flash dev2_gpio.hex
+Then the uploaded firmware can be started and used directly:
+ dfu-programmer at90usb162 start