I'm working on a project with an Overo & Palo 43 combination. One of
my sensors uses an SPI interface. However, in looking at the schematic
for the Palo 43 it appears that the MISO line on the expansion header
(GPIO173_SPI1_MISO) is being driven by a bus transceiver (IC U$4G$3
which is reportedly a SN74AVCB164245) from the touch panel controller.
The output enable pin on the schematic shows it hardwired to ground
(enabled) so the transceiver is always driving that line. Since the
line is being driven by that transceiver I don't see how it can be
hooked it up to something else without the two fighting. Has anyone
used the SPI interface on the Palo 43 expansion header successfully for
data input to the Overo?