Each of the six available timers now handles two consecutive PWM output
channels. This also implements support for changing the group PWM
frequency in a similar manner to the ChibiOS HAL.
Enabling/disabling the timer would apply the setting to whole groups of
channels. Fix to poke the comparator so that the setting only applies to
the particular channel.
Conveniently, though not necessarily intentionally, this avoids
truncating the output pulse and causing unexpected reactions from
servos. This also preserves the old behavior.
If you over allocate the number of analog channels this results in a
crash. It's easy to trigger this if you have voltage only monitors as we
still eat up a current input channel, regarless of if we use it. There
are only 16 channels at this time on ChibiOS, so if you have 9 voltage
only battery monitors you are out.
This PR improves that situation by only allocating channels when needed,
and in the case where we run out we now set a ConfigError, which on a
flight controller is much more friendly then a instant segfault the
moment we read a battery monitor. NOTE: on AP_Periph this takes the
node off the bus, rather then just sitting in the bootloader. This was
consideted acceptable as the current behaviour was to segfault and then
sit in the bootloader, unless you made new firmware that limited the
number of channels allocated it wasn't possible to recover in this
situation anyways.
We're using a value off the wire before it has been validated. That value is used to limit indexing into a buffer, and that buffer isn't big enough to handle all possible "bad" values that index could take on. Note that "read" here returns int16_t....
This makes SIM_ENGINE_FAIL work a little more intuitively, since it is
usually used to simulate a complete failure.
Also, drive-by fix of the SIM_ENGINE_MUL documentation.
kills heavy peripherals
../../libraries/AP_Quicktune/AP_Quicktune.cpp: In member function 'void AP_Quicktune::update(bool)':
../../libraries/AP_Quicktune/AP_Quicktune.cpp:177:32: error: 'vehicle' is not a member of 'AP'
177 | const auto &vehicle = *AP::vehicle();
| ^~~~~~~
compilation terminated due to -Wfatal-errors.
[ 688/1225] Compiling libraries/AP_TemperatureSensor/AP_TemperatureSensor_TSYS03.cpp
Waf: Leaving directory `/home/pbarker/rc/ardupilot/build/CubeOrange-periph-heavy'
