mirror of
https://github.com/travisgoodspeed/goodwatch
synced 2024-11-21 23:58:31 +00:00
84 lines
2.5 KiB
Python
Executable File
84 lines
2.5 KiB
Python
Executable File
#!/usr/bin/python2
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## This quick and dirty tool converts a textfile of frequencies and
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## names into a GoodWatch codeplug, for storage in the firmware image.
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## Previously, we converted it to an Intel Hex image that loaded at
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## 0x1800, but this caused problems with mspdebug's tilib driver,
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## which can't seem to unlock info flash.
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import sys, argparse;
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def freqbytes(freq):
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"""Converts a frequency to three FREQ bytes. Assumes 26MHz xtal."""
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freqMult = (0x10000 / 1000000.0) / 26.0;
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num=int(freq*1e6*freqMult);
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FREQ2=(num>>16) & 0xFF;
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FREQ1=(num>> 8) & 0xFF;
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FREQ0= num & 0xFF
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return FREQ2, FREQ1, FREQ0;
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codeplugadr=0x1800;
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def handleline(line):
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"""Handles one line of the file."""
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global codeplugadr;
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if len(line)==0: #Empty line.
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return;
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elif line[0]=='#': #Comment
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return;
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else:
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# This is a real line. First word ought to be the frequency,
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# and the second word ought to be the name (8 characters or
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# less). Further words would be flags, but we ignore them for
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# now.
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LEN=12;
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words=line.split();
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freq=float(words[0]);
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name=words[1];
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namehex=name.encode('hex');
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assert(len(name)<=8);
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while len(namehex)<16:
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namehex='20'+namehex;
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FLAGS=0;
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(FREQ2, FREQ1, FREQ0) = freqbytes(freq);
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hexline="\"\\x%02x\\x%02x\\x%02x\\x%02x\" \"%s\"" % (
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FLAGS, FREQ2,FREQ1,FREQ0, namehex.decode("hex")
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);
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line="%s //%s \n" %(
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hexline, name
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);
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codeplugadr=codeplugadr+12;
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return line;
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def convertcodeplug(infile, outfile):
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"""Converts a codeplug textfile into an intel hex file for flashing."""
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i=open(infile,'r');
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o=open(outfile,'w');
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o.write("/* Auto-generated codeplug string by goodwatch-txt2cpstr.py. */\n\n");
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o.write("const char codeplugstr[]=\n");
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for line in i:
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ihl=handleline(line.strip());
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if(ihl!=None):
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o.write(ihl);
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o.write(";\n");
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i.close();
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o.close();
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if __name__=='__main__':
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parser = argparse.ArgumentParser(description='GoodWatch Codeplug Compiler')
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parser.add_argument('-i','--input', help='Input Textfile');
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parser.add_argument('-o','--output', help='Output Intel Hex File');
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args=parser.parse_args();
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if args.input!=None and args.output!=None:
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convertcodeplug(args.input, args.output);
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