altos: Add -Wshadow to CFLAGS

[fw/altos] / doc / usage.inc

diff --git a/doc/usage.inc b/doc/usage.inc
index 25fdd6d32899af59e183f941e7a892e2bfdc3eb9..dd795bdd4125f7a0ad55987a1a0ba35d000ce12c 100644 (file)
--- a/doc/usage.inc
+++ b/doc/usage.inc
@@ -167,13 +167,15 @@
                 signals, but no record of the flight will be
                 stored in on-board flash.
 
+               ifdef::easymega,telemega[]
                |Additional Igniters
                |four very short beeps
                |Continuity indication for the four additional pyro
-               |channels on TeleMega and EasyMega. One high tone for
-               |no continuity, one low tone for continuity. These are
-               |produced after the continuity indicators for the two
-               |primary igniter channels.
+                channels on TeleMega and EasyMega. One high tone for
+                no continuity, one low tone for continuity. These are
+                produced after the continuity indicators for the two
+                primary igniter channels.
+               endif::easymega,telemega[]
 
                |====
 
@@ -236,14 +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,
@@ -319,3 +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.