From d3f092ce989c1270ca72fb07c19f2f4dc7bba163 Mon Sep 17 00:00:00 2001 From: Sebastien Bourdeauducq Date: Sat, 11 Jun 2016 10:26:35 -0600 Subject: [PATCH] doc: add warning about pipistrello current draw --- doc/manual/core_device.rst | 2 ++ 1 file changed, 2 insertions(+) diff --git a/doc/manual/core_device.rst b/doc/manual/core_device.rst index 0c5677d0c..36c36be69 100644 --- a/doc/manual/core_device.rst +++ b/doc/manual/core_device.rst @@ -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: +--------------+------------+--------------+