Added checksum calculator option for microcontroller. #1
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nazriel
approved these changes
Mar 12, 2019
lpc17prl.lua
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| if opts.mode == 'calculate' then | ||
| if not opts.fname then D.abort(2, "Binary file not provided") end | ||
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| local f, err = io.open(opts.fname, "r+b") |
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Usually you see such order for open-mode.
Suggested change
| local f, err = io.open(opts.fname, "r+b") | |
| local f, err = io.open(opts.fname, "rb") |
but what you wrote seems to be good as well :)
mkgorski
reviewed
Mar 13, 2019
lpc17prl.lua
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| local bytes = f:read(4) | ||
| local int32 = B.dec32LE(bytes) | ||
| sum = sum + int32 | ||
| D.yellow''(byteno,int32,B.hex(int32)) |
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Although it's convenient for development purposes - I think user is not interested in those values
lpc17prl.lua
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| local sum = 0 | ||
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| for byteno=1,7,1 do |
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nitpick: you can omit tailing 1:
for byteno=1,7 do
lpc17prl.lua
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| f:write(B.enc32LE(sum)) | ||
| f:close() | ||
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| D.green'File saved! Checksum:'(sum,B.hex(sum)) |
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Again - not sure if it's really needed.
lpc17prl.lua
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| D.green'File saved! Checksum:'(sum,B.hex(sum)) | ||
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| os.exit() |
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What if I'd like patch the file and write it to flash in one go?
Maybe we can think of supporting syntax like ./lpc17prl.lua -XW FILE
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Hello!
I would love to add this small functionality into your project!
Cheers,
smlkdev