Digilent 410-229P - Manual (Page 3)

chipKIT Pmod Shield-Uno Reference Manual
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is providing the pull-ups or if I 2 C #1 isn’t being used and the pull-ups are interfering with the use of the
pins. The on-board pull-ups are enabled by install shorting blocks on JP10 and JP11. Removing the
shorting blocks disables the pull-ups.
Digilent has several small I/O modules available that can be connected using the I
2 C connector.
These include a 3-axis accelerometer, 4-channel, 12-bit A/D converter, serial character LCD panel, 3-
axis gyroscope, real-time clock/calendar, and an I/O expander.
SPI Connector
The SPI connector pins are as follows: Pin 1 (MISO), Pin 3 (SCK), Pin 4 (MOSI), and Pin 5 (SS).
These signals also appear on connector J8 of the Uno32.
Jumpers JP5 and JP7 on the Uno32 are used to select whether the Uno32 operates as a Master
(transmit on MOSI, receive on MISO) or a Slave (transmit on MISO, receive on MOSI) device. The
shorting blocks on JP5 and JP7 are normally placed in the Master position for the Uno32 to function
as an SPI master. Also, jumper JP4 on the Uno32 is used to select PWM output (in RD4 position) or
the SPI SS function on Pin 5 (in RG9 position).