Convert hello_interp.c:times_table to µPython #58
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Not useful for efficient calculation of times-tables (it is not) but a nice way to show accessing hardware registers in the rp2040 from µPython
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Not sure how useful this would be, but I thought it would be nice to show that you can access a lot of what is written in the data sheets from micropython without too much hassle. |
lurch
reviewed
Jan 6, 2023
interp/interp.py
Outdated
| from machine import mem32 | ||
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| # initialise lane 0 on interp: set that we are using all 32 bits | ||
| mem32[0xD0000000 | 0xAC] = 0x1F << 10 |
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It's not up to me whether this PR gets merged or not, but IMHO it'd be much easier to read if you had
SIO_BASE = 0xD0000000
INTERP0_ACCUM0 = 0x80
INTERP0_BASE0 = 0x88
INTERP0_POP_LANE0 = 0x94
INTERP0_CTRL_LANE0 = 0xACat the top of the file, and then this line could become:
mem32[SIO_BASE + INTERP0_CTRL_LANE0] = 0x1F << 10(note that I've also changed the | to a +, which is probably more readable to most Python programmers?)
EDIT: I lifted those names directly from https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf
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Excellent suggestion, thank you. Done.
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Not useful for efficient calculation of times-tables (it is not) but a nice way to show accessing hardware registers in the rp2040 from µPython.