mnl100: fix checksum

2025-09-07 09:31:38 +08:00 · 2025-09-07 09:31:38 +08:00 · 694daf4822
commit 694daf4822
parent 6e2b094d43
1 changed files with 1 additions and 1 deletions
--- a/mnl100.py
+++ b/mnl100.py
@ -6,7 +6,7 @@ def main():
    with serial.Serial("/dev/cuaU0", timeout=1., exclusive=True) as port:
        def transact(rdu):
            telegram = b"#!@" + rdu
-            telegram += bytes("{:02X}".format(sum(telegram)), "ascii")
+            telegram += bytes("{:02X}".format(sum(telegram) & 0xff), "ascii")
            telegram += b"\r"
            port.write(telegram)