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ad53xx: ignore F3 (reserved)
Signed-off-by: Robert Jördens <rj@quartiq.de>
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@ -176,7 +176,7 @@ class AD53xx:
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(AD53XX_CMD_SPECIAL | AD53XX_SPECIAL_CONTROL | 0b0010) << 8)
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if not blind:
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ctrl = self.read_reg(channel=0, op=AD53XX_READ_CONTROL)
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if ctrl != 0b0010:
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if (ctrl & 0b10111) != 0b00010:
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raise ValueError("DAC CONTROL readback mismatch")
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delay(15*us)
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