diff options
| -rw-r--r-- | Bootup Logo/python_logo_converter/img2ts100.py | 45 |
1 files changed, 22 insertions, 23 deletions
diff --git a/Bootup Logo/python_logo_converter/img2ts100.py b/Bootup Logo/python_logo_converter/img2ts100.py index 26bc8fed..8587c7f7 100644 --- a/Bootup Logo/python_logo_converter/img2ts100.py +++ b/Bootup Logo/python_logo_converter/img2ts100.py @@ -8,7 +8,7 @@ import sys try: from PIL import Image, ImageOps except ImportError as error: - raise ImportError("{}: {} requres Python Imaging Library (PIL). " + raise ImportError("{}: {} requres Python Imaging Library (PIL). " "Install with `pip` or OS-specific package " "management tool." .format(error, sys.argv[0])) @@ -32,29 +32,32 @@ def split16(word): return (word >> 8) & 0xff, word & 0xff -def intel_hex_line(file, record_type, offset, data): - """write a line of data in Intel hex format""" +def intel_hex_line(record_type, offset, data): + """generate a line of data in Intel hex format""" # length, address offset, record type record_length = len(data) - file.write(':{:02X}{:04X}{:02X}'.format(record_length, offset, record_type)) + yield ':{:02X}{:04X}{:02X}'.format(record_length, offset, record_type) # data - map(lambda byte: file.write("{:02X}".format(byte)), data) + for byte in data: + yield "{:02X}".format(byte) # compute and write checksum (with DOS line ending for compatibility/safety) - file.write("{:02X}\r\n" - .format((((sum(data, # sum data ... - record_length # ... and other ... - + sum(split16(offset)) # ... fields ... - + record_type) # ... on line - & 0xff) # low 8 bits - ^ 0xff) # two's ... - + 1) # ... complement - & 0xff)) # low 8 bits + yield "{:02X}\r\n".format((((sum(data, # sum data ... + record_length # ... and other ... + + sum(split16(offset)) # ... fields ... + + record_type) # ... on line + & 0xff) # low 8 bits + ^ 0xff) # two's ... + + 1) # ... complement + & 0xff) # low 8 bits def intel_hex(file, bytes_, start_address=0x0): """write block of data in Intel hex format""" + def write(generator): + file.write(''.join(generator)) + if len(bytes_) % INTELHEX_BYTES_PER_LINE != 0: raise ValueError("Program error: Size of LCD data is not evenly divisible by {}" .format(INTELHEX_BYTES_PER_LINE)) @@ -62,25 +65,21 @@ def intel_hex(file, bytes_, start_address=0x0): address_lo = start_address & 0xffff address_hi = (start_address >> 16) & 0xffff - intel_hex_line(file, - INTELHEX_EXTENDED_LINEAR_ADDRESS_RECORD, - 0, - split16(address_hi)) + write(intel_hex_line(INTELHEX_EXTENDED_LINEAR_ADDRESS_RECORD, 0, + split16(address_hi))) size_written = 0 while size_written < INTELHEX_MINIMUM_SIZE: offset = address_lo for line_start in range(0, len(bytes_), INTELHEX_BYTES_PER_LINE): - intel_hex_line(file, - INTELHEX_DATA_RECORD, - offset, - bytes_[line_start:line_start + INTELHEX_BYTES_PER_LINE]) + write(intel_hex_line(INTELHEX_DATA_RECORD, offset, + bytes_[line_start:line_start + INTELHEX_BYTES_PER_LINE])) size_written += INTELHEX_BYTES_PER_LINE if size_written >= INTELHEX_MINIMUM_SIZE: break offset += INTELHEX_BYTES_PER_LINE - intel_hex_line(file, INTELHEX_END_OF_FILE_RECORD, 0, ()) + write(intel_hex_line(INTELHEX_END_OF_FILE_RECORD, 0, ())) def img2hex(input_filename, |