X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=doc%2Fusage.inc;h=dd795bdd4125f7a0ad55987a1a0ba35d000ce12c;hp=29587b7e7e4f4afc3d16f3af307a8bddbdd849d2;hb=3fd320ea38f2945f5611a09a0e48d16db467d105;hpb=f5944ba4eb3f419f8cad461872d048b5adf7b566

diff --git a/doc/usage.inc b/doc/usage.inc
index 29587b7e..dd795bdd 100644
--- a/doc/usage.inc
+++ b/doc/usage.inc
@@ -238,14 +238,16 @@
 		ifdef::radio[disabled, and the radio goes into transmit-only mode.]
 		ifndef::radio[disabled.]
 		The only way to get out of this
-		mode is to power the flight computer down.
+		mode is to power the flight computer down. See below for how to get the flight
+		computer to come up in Flight/Pad mode at power on.
 
 		Idle::
 		The flight computer is ready to communicate over USB
 		ifdef::radio[and in packet mode over the radio.]
 		You can configure
 		the flight computer, download data or display
-		the current state.
+		the current state. See below for how to get the flight
+		computer to come up in Idle mode at power on.
 
 		ifdef::telemetrum,easymega,telemega[]
 		For flight computers with accelerometers (TeleMetrum,
@@ -321,3 +323,22 @@
 		different kind of battery to any of these will destroy
 		the board.
 		endif::telemega,easymega,telemetrum[]
+
+	=== Using Packet Link Mode
+
+		All AltusMetrum flight computers that have a radio can
+		communicate with the ground station software for
+		configuration and other operations using the Packet
+		Link mode. This uses radio communication instead of a
+		USB cable. To set this up, the ground station software
+		must be configured to the correct data rate, frequency
+		and callsign.
+
+		You can monitor Packet Link mode from TeleBT or
+		TeleDongle by watching the LEDs. Each time the device
+		transmits, the red LED will flash. When the link is
+		busy, or when the link is not working, the device will
+		transmit 10 times per second, so the LED will flash
+		rapidly. When the link is working and there is no data
+		to send, the link will flash once per second, and the
+		LED will flash more slowly.