Method command_check

libsigrokdecode4DSL/decoders/sle44xx/pd.py:244–314

Interpret CTRL/ADDR/DATA command entry.

(self, ctrl, addr, data)

        self.state = 'CMD' if is_start else 'DATA'

    def command_check(self, ctrl, addr, data):
        '''Interpret CTRL/ADDR/DATA command entry.'''

        # See the Siemens Datasheet section 2.3 Commands. The abbreviated
        # text variants are my guesses, terse for readability at coarser
        # zoom levels.
        codes_table = {
            0x30: {
                'fmt': [
                    'read main memory, addr {addr:02x}',
                    'RD-M @{addr:02x}',
                ],
                'len': lambda ctrl, addr, data: self.max_addr - addr,
            },
            0x31: {
                'fmt': [
                    'read security memory',
                    'RD-S',
                ],
                'len': 4,
            },
            0x33: {
                'fmt': [
                    'compare verification data, addr {addr:02x}, data {data:02x}',
                    'CMP-V @{addr:02x} ={data:02x}',
                ],
                'proc': True,
            },
            0x34: {
                'fmt': [
                    'read protection memory, addr {addr:02x}',
                    'RD-P @{addr:02x}',
                ],
                'len': 4,
            },
            0x38: {
                'fmt': [
                    'update main memory, addr {addr:02x}, data {data:02x}',
                    'WR-M @{addr:02x} ={data:02x}',
                ],
                'proc': True,
            },
            0x39: {
                'fmt': [
                    'update security memory, addr {addr:02x}, data {data:02x}',
                    'WR-S @{addr:02x} ={data:02x}',
                ],
                'proc': True,
            },
            0x3c: {
                'fmt': [
                    'write protection memory, addr {addr:02x}, data {data:02x}',
                    'WR-P @{addr:02x} ={data:02x}',
                ],
                'proc': True,
            },
        }
        code = codes_table.get(ctrl, {})