nils
514983c158
Make the repo self-contained (no dependency on the parent firmware-tools/ checkout): copy in the patch/disasm/syx tools and the c2probe RP2040 C2 flash-reader/patcher firmware. - patch_usb1_to_cv.py : byte-level USB-1->CV patch (imported by roundtrip.py) - d8051.py : standalone 8051 disassembler - syx_extract.py : SysEx extractor - c2probe/ : RP2040 C2 flash reader + host scripts (c2probe.c, cdc/dump_flash/patch_c2/reflash_page/verify.py, CMake build) - RECOVERY.md : C2 flash recovery procedure - EFM8UB20_PINOUT.md : reverse-engineered QFP48 pinout + firmware pin usage - roundtrip.py : import local patch_usb1_to_cv (parent as fallback) - .gitignore : exclude c2probe/.venv, c2probe/build Verified: stock + patched round-trips still re-assemble byte-identical.
53 lines
1.9 KiB
Python
Executable File
53 lines
1.9 KiB
Python
Executable File
#!/usr/bin/env python3
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# cdc.py -- minimal host helper to talk to the c2probe CDC line protocol.
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# Uses termios (no pyserial). Usage:
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# ./cdc.py hello
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# ./cdc.py id2
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# ./cdc.py "read 2400 16"
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# Sends one command, prints all reply lines until a known terminator/prompt.
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import sys, os, termios, tty, time, select
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DEV = os.environ.get("C2PROBE_DEV", "/dev/cu.usbmodem2101")
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def open_port():
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fd = os.open(DEV, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
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attrs = termios.tcgetattr(fd)
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attrs[2] = termios.CS8 | termios.CLOCAL | termios.CREAD # cflag
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attrs[3] = 0 # lflag: raw
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attrs[4] = termios.B115200 # ispeed
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attrs[5] = termios.B115200 # ospeed
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# no flow control, no special chars
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attrs[0] = 0; attrs[1] = 0
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termios.tcsetattr(fd, termios.TCSANOW, attrs)
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return fd
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def drain(fd, t=0.15):
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r, _, _ = select.select([fd], [], [], t)
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if r:
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try: return os.read(fd, 4096).decode("utf-8", "replace")
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except BlockingIOError: return ""
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return ""
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def cmd(fd, line, timeout=3.0):
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os.write(fd, (line + "\n").encode())
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out = ""
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end = time.time() + timeout
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while time.time() < end:
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r, _, _ = select.select([fd], [], [], 0.1)
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if r:
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try: out += os.read(fd, 4096).decode("utf-8", "replace")
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except BlockingIOError: pass
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# stop once we have at least one complete line and the port goes quiet
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if "\n" in out:
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# give a short quiet window for any trailing lines
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r2, _, _ = select.select([fd], [], [], 0.08)
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if not r2:
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break
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return out
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if __name__ == "__main__":
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line = " ".join(sys.argv[1:]) if len(sys.argv) > 1 else "hello"
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fd = open_port()
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drain(fd, 0.3) # drop any startup/banner
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print(cmd(fd, line), end="")
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os.close(fd) |