This feature allows use of a transmitter module 'caddy' PCB, which facilitates
automatic DSM2(X) or Fr-Sky transmitter module switching, without having to
swap TX module on the back of the radio. Two antennas are installed on the
radio instead of attempting to switch 2.4GHz RF signals, for reliability. The
TX Caddy circuit schematic and PCB layout can be found in the gruvin9x hardware
project.
I am not really expecting anyone else to implement this feature. But it's there
for those who might and adding it to trunk prevent me having to manually port
the feature to new versions, each time I update my field radio.
-- Gruvin
and compensated for main clock synchronisation to get accurate 8us bit
lengths, as measured on the logic analsyser.
Specifically, all 1 and 0 bits now measure 8.000us in length, instead of
varyting from 6.250us to 10.750us, as before.
NOTE: A similar len-5 / len+3 compensation is almost certainly required
to improve bit timing on the stock board, in software bit-bang mode,
but I did not want to commit such a change to trunk without being
able to bench test it first. The values might differ slightly, due
to the number of instruction cycles executed before the actual
PORT B bit toggle code is reached. But it will NOT be the same for
both 1 and 0 bits.
$ make ... PORTH_TIMING=YES
See code comments for details. This is used to analyse real-world timing of
mixer interrupt, setupPulses and PPM or DSM=SERIAL or DSM2=PPM data output
streams.
NOTE: Not compatible to SOUND=YES (SOMO14)
[sky9x / gruvin9x] Date / Time setting splitted into 2 lines (General Setup Menu)
[sky9x] Baudrate moved to the Hardware screen
[sky9x / gruvin9x] SD Manager better implementation
[sky9x] Short / Long switch press used in Function Switches
[sky9x] Bg Music Pause / Resume
[sky9x] Model Backup / Restore should be ok
[sky9x] SD unmounted when USB masstorage
[sky9x / gruvin9x] Header added to Model Backups
[sky9x / gruvin9x] Log file closed when Logging function stopped
+ Cleaning session
bsongis