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avr: Add SIMULAVR build option; don't show WATCHDOG or SERIAL_BAUD_U2X

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Add a CONFIG_SIMULAVR option to the Kbuild menus and don't directly
prompt users for CONFIG_WATCHDOG or CONFIG_SERIAL_BAUD_U2X.  The only
reason to disable these options would be if one were running on
simulavr.  This simplifies the user visible menu options.

Also, only show CONFIG_CLEAR_PRESCALER for at90usb1286 chips.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-05-28 11:04:59 -04:00
parent d2547ce6b0
commit 3af87e1c42
2 changed files with 21 additions and 7 deletions
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8
docs/Debugging.md
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@ -75,10 +75,10 @@ cd /patch/to/klipper
make menuconfig
```
and compile the micro-controller software for an AVR atmega644p,
disable the AVR watchdog timer, and set the MCU frequency
to 20000000. Then one can compile Klipper (run `make`) and then start
the simulation with:
and compile the micro-controller software for an AVR atmega644p, set
the MCU frequency to 20Mhz, and select SIMULAVR software emulation
support. Then one can compile Klipper (run `make`) and then start the
simulation with:
```
PYTHONPATH=/path/to/simulavr/src/python/ ./scripts/avrsim.py -m atmega644 -s 20000000 -b 250000 out/klipper.elf