suservo coredevice driver: mask ftw to avoid erroneous sign extension

2019-05-22 17:23:06 +01:00 · 2019-05-22 17:23:06 +01:00 · adf3df2bb5
parent 704b5c6305
commit adf3df2bb5
1 changed files with 1 additions and 1 deletions
--- a/artiq/coredevice/suservo.py
+++ b/artiq/coredevice/suservo.py
@ -284,7 +284,7 @@ class Channel:
        """
        base = (self.servo_channel << 8) | (profile << 3)
        self.servo.write(base + 0, ftw >> 16)
-        self.servo.write(base + 6, ftw)
+        self.servo.write(base + 6, (ftw & 0xffff))
        self.servo.write(base + 4, offs)
        self.servo.write(base + 2, pow_)