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doc: add warning about pipistrello current draw

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Sebastien Bourdeauducq 2016-06-11 10:26:35 -06:00
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commit d3f092ce98
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doc/manual/core_device.rst
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@ -160,6 +160,8 @@ The low-cost Pipistrello FPGA board can be used as a lower-cost but slower alter
.. warning:: Windows is not supported.
.. warning:: The Pipistrello draws a high current over USB, and that current increases when the FPGA design is active. If you experience problems such as intermittent board freezes or USB errors, try connecting it to a self-powered USB hub.
When plugged to an adapter, the NIST QC1 hardware can be used. The TTL lines are mapped to RTIO channels as follows:
+--------------+------------+--------------+