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avrsim: Change default speed to 16Mhz and default baud to 250K 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2021-09-16 20:09:33 -04:00
parent 46167cae67
commit 59bd51d207
2 changed files with 7 additions and 8 deletions
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11
docs/Debugging.md
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@ -219,13 +219,12 @@ cd /path/to/klipper
make menuconfig
```
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:
and compile the micro-controller software for an AVR atmega644p 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
PYTHONPATH=/path/to/simulavr/src/python/ ./scripts/avrsim.py out/klipper.elf
```
Then, with simulavr running in another window, one can run the
@ -246,7 +245,7 @@ the directions above, but run avrsim.py with a command-line like the
following:
```
PYTHONPATH=/path/to/simulavr/src/python/ ./scripts/avrsim.py -m atmega644 -s 20000000 -b 250000 out/klipper.elf -t PORTA.PORT,PORTC.PORT
PYTHONPATH=/path/to/simulavr/src/python/ ./scripts/avrsim.py out/klipper.elf -t PORTA.PORT,PORTC.PORT
```
The above would create a file **avrsim.vcd** with information on each

4
scripts/avrsim.py
View File

@ -169,11 +169,11 @@ def main():
opts = optparse.OptionParser(usage)
opts.add_option("-m", "--machine", type="string", dest="machine",
default="atmega644", help="type of AVR machine to simulate")
opts.add_option("-s", "--speed", type="int", dest="speed", default=8000000,
opts.add_option("-s", "--speed", type="int", dest="speed", default=16000000,
help="machine speed")
opts.add_option("-r", "--rate", type="float", dest="pacing_rate",
default=0., help="real-time pacing rate")
opts.add_option("-b", "--baud", type="int", dest="baud", default=38400,
opts.add_option("-b", "--baud", type="int", dest="baud", default=250000,
help="baud rate of the emulated serial port")
opts.add_option("-t", "--trace", type="string", dest="trace",
help="signals to trace (? for help)")