X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=doc%2Fcompanion.xsl;h=14e2194e3bd26d5f5aee4ccab14ae545d01a788b;hp=1215d9af14de27f9f82d8a0964d8b998ed1a65c1;hb=0a3e27e3a392be4cfe03d200068a7e69bb2f3fdb;hpb=d212d782bff977d609a9da1b805de4a2615fb474 diff --git a/doc/companion.xsl b/doc/companion.xsl index 1215d9af..14e2194e 100644 --- a/doc/companion.xsl +++ b/doc/companion.xsl @@ -1,5 +1,5 @@ -
@@ -44,18 +44,22 @@ The Companion Port provides two different functions: + Power. Both battery-level and 3.3V regulated power are available. Note that the amount of regulated power is not huge; TeleMetrum contains a 150mA regulator and uses, at peak, about 120mA or so. For applications needing more than a few dozen mA, placing a separate regulator on them and using the battery for power is probably a good idea. + + SPI. The flight computer operates as a SPI master, using a protocol defined in this document. Companion boards provide a matching SPI slave implementation which supplies telemetry information for the radio downlink during flight + @@ -85,9 +89,11 @@
SPI Message Formats + This section first defines the command message format sent from the flight computer to the companion board, and then the various reply message formats for each type of command message. +
Command Message