Add EEPROM dump parser and the result (PW-SH1)

eeprom/extract.py

@@ -0,0 +1,106 @@
+#!/usr/bin/env python3
+
+"""
+EEPROM dump parser
+Supports Saleae Logic 2 format that has following columns:
+    - name
+    - type
+    - start_time
+    - duration
+    - ack
+    - address
+    - read
+    - data
+"""
+
+import sys
+from collections import namedtuple
+from dataclasses import dataclass
+
+from IPython import embed
+
+struct = namedtuple(
+    'struct',
+    [
+        'name',
+        'typ',
+        'start_time',
+        'duration',
+        'ack',
+        'address',
+        'read',
+        'data',
+    ],
+)
+
+
+def load(fn) -> list[struct]:
+    l = []
+    with open(fn, 'r') as f:
+        f.readline()
+        for line in f.readlines():
+            values = line.replace('"', '').strip().split(',')
+            s = struct(*values)
+            l.append(s)
+
+    return l
+
+
+def main():
+    @dataclass
+    class Chunk:
+        word_address: int
+        length: int
+        body: bytes
+
+    data = load(sys.argv[1])
+    chunks = []
+
+    di = iter(data)
+
+    while True:
+        try:
+            d = next(di)
+            if d.typ != 'start':
+                raise ValueError(f'unexpected type: {d.typ}, expected = start')
+        except StopIteration:
+            break
+
+        d = next(di)
+        if d.typ != 'address':
+            raise ValueError(f'unexpected type: {d.typ}, expected = address')
+
+        d1, d2 = next(di), next(di)
+        if d1.typ != 'data' or d2.typ != 'data':
+            raise ValueError(f'unexpected type: {d1.typ} and {d2.typ}, expected = data and data')
+
+        hi, lo = eval(d1.data), eval(d2.data)
+
+        d = next(di)
+        if d.typ != 'start':
+            raise ValueError(f'unexpected type: {d.typ}, expected = start')
+
+        d = next(di)
+        if d.typ != 'address':
+            raise ValueError(f'unexpected type: {d.typ}, expected = address')
+
+        body = []
+        while True:
+            d = next(di)
+            if d.typ == 'stop':
+                break
+            body.append(eval(d.data))
+
+        chunks.append(Chunk((hi << 8) + lo, len(body), bytes(body)))
+
+    with open(sys.argv[1] + '.bin', 'wb') as f:
+        for chunk in chunks:
+            f.write(chunk.body)
+
+    print('* Parse summary *')
+    for i, chunk in enumerate(chunks):
+        print(f'Chunk {i+1}: address={chunk.word_address}, length={chunk.length}')
+    print('Total length = {}'.format(sum(c.length for c in chunks)))
+
+
+main()