Beginings of a codeplug compiler. #50

bin/goodwatch-txt2cp.py

@@ -0,0 +1,56 @@
+#!/usr/bin/python2
+
+## This quick and dirty tool converts a textfile of frequencies and
+## names into a GoodWatch codeplug, for storage in information flash
+## at 0x1800.  Use cc430-bsl.py to write the codeplug to flash.
+
+import sys, argparse;
+
+
+def freqbytes(freq):
+    """Converts a frequency to three FREQ bytes.  Assumes 26MHz xtal."""
+    freqMult = (0x10000 / 1000000.0) / 26.0;
+    num=int(freq*1e6*freqMult);
+    FREQ2=(num>>16) & 0xFF;
+    FREQ1=(num>> 8) & 0xFF;
+    FREQ0= num      & 0xFF
+    return FREQ2, FREQ1, FREQ0;
+
+def handleline(line):
+    """Handles one line of the file."""
+    if len(line)==0:   #Empty line.
+        return;
+    elif line[0]=='#': #Comment
+        return;
+    else:
+        # This is a real line.  First word ought to be the frequency,
+        # and the second word ought to be the name (8 characters or
+        # less).  Further words would be flags, but we ignore them for
+        # now.
+        words=line.split();
+        freq=float(words[0]);
+        name=words[1];
+        assert(len(name)<=8);
+        (FREQ2, FREQ1, FREQ0) = freqbytes(freq);
+        print("%8s := %f = 0x%02x%02x%02x" % (
+            name, freq,
+            FREQ2, FREQ1, FREQ0));
+        
+    
+def convertcodeplug(infile, outfile):
+    """Converts a codeplug textfile into an intel hex file for flashing."""
+    i=open(infile,'r');
+    for line in i:
+        handleline(line.strip());
+
+
+
+if __name__=='__main__':
+    parser = argparse.ArgumentParser(description='GoodWatch Codeplug Compiler')
+    parser.add_argument('-i','--input', help='Input Textfile');
+    parser.add_argument('-o','--output', help='Output Intel Hex File');
+    
+    args=parser.parse_args();
+
+    if args.input!=None and args.output!=None:
+        convertcodeplug(args.input, args.output);