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Fix checksum computation in python_logo_converter (#371)

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Philippe Teuwen
2018-10-16 22:28:03 +02:00
committed by Ben V. Brown
parent 40907a384e
commit 15f365d2bd
1 changed files with 8 additions and 7 deletions
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15
Bootup Logo/python_logo_converter/img2ts100.py
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@@ -43,13 +43,14 @@ def intel_hex_line(file, record_type, offset, data):
# compute and write checksum (with DOS line ending for compatibility/safety) # compute and write checksum (with DOS line ending for compatibility/safety)
file.write("{:02X}\r\n" file.write("{:02X}\r\n"
.format(((sum(data, # sum data ... .format((((sum(data, # sum data ...
record_length # ... and other ... record_length # ... and other ...
+ sum(split16(offset)) # ... fields ... + sum(split16(offset)) # ... fields ...
+ record_type) # ... on line + record_type) # ... on line
& 0xff) # low 8 bits & 0xff) # low 8 bits
^ 0xff) # two's ... ^ 0xff) # two's ...
+ 1)) # ... complement + 1) # ... complement
& 0xff)) # low 8 bits
def intel_hex(file, bytes_, start_address=0x0): def intel_hex(file, bytes_, start_address=0x0):