ad53xx: distinguish errors

2020-09-17 14:13:10 +00:00 · 2020-09-17 14:13:10 +00:00 · b15e388b5f
parent 868a9a1f0c
commit b15e388b5f
1 changed files with 2 additions and 0 deletions
--- a/artiq/coredevice/ad53xx.py
+++ b/artiq/coredevice/ad53xx.py
@ -178,6 +178,8 @@ class AD53xx:
        self.write_offset_dacs_mu(self.offset_dacs)
        if not blind:
            ctrl = self.read_reg(channel=0, op=AD53XX_READ_CONTROL)
+            if ctrl == 0xffff:
+                raise ValueError("DAC not found")
            if ctrl & 0b10000:
                raise ValueError("DAC over temperature")
            delay(25*us)