update readme, add id / alt code instruction

This commit is contained in:
Junzi Sun 2018-06-21 17:38:59 +02:00
parent 82b912bc05
commit 54b2038a41

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@ -124,6 +124,21 @@ messages. But the reference position shall be with in 180NM (airborne)
or 45NM (surface) of the true position. or 45NM (surface) of the true position.
Decode altitude replies in DF4 / DF20
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.. code:: python
pms.common.altcode(msg) # Downlink format must be 4 or 20
Decode identity replies in DF5 / DF21
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.. code:: python
pms.common.idcode(msg) # Downlink format must be 5 or 21
Common Mode-S functions Common Mode-S functions
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