Digital Input/Output Pins (Dio #); Gumstix Ir Serial Pins - Quanser qbot User Manual

Quanser Qbot: User Manual
Figure 5: Qbot PCB showing available pins for the PWM output, Digital Input/Output
and Analog Input pins, serial pins, and jumpers for INT/EXT power

4.1.2.1. Digital Input/Output Pins (DIO #)

The DIO channels (0 to 6) are set as inputs by default. The DIO channels need to be con-
figured as either inputs (or outputs, but not both) using the HIL Initialize block. Also, if an
output needs to be in a known state on power up, it is recommended that a 10k resistor is
put from the I/O to 5V or GND as needed.
There is a final digital channel (7) that is a fixed output, and it is represented by an LED
labeled DIO7.

4.1.2.2. Gumstix IR Serial Pins

The Qbot provides a TTL serial connection to the Gumstix IR serial port (port number 2).
The serial port consists of ground (GND), receive (GUMSTIX IR RXD), transmit (GUM-
STIX IR TXD), and power (+3.3V or +5.0V) pins. The serial port is accessed through the
QUARC Stream blockset or Stream API. For more information on accessing serial data see
Document Number: 830  Revision: 7  Page: 5