Refer to the Getting started section
for details on selecting your wireless components.
Input/Outputs -- user controlled
drive when configured as Outputs
5V tolerant - use limiting resistor when connecting to a 5V supply
IO15 connected to LED
||Input/Outputs -- user
Open drain 4mA pulldown when configured as
||10 bit A/D inputs|
may also be used
as digital Input/Outputs IO(16-23) -- user controlled
used as analog lines, voltage levels should not exceed 3.3V
Dual Use AD pins
On reset or power up the AD pins are configured as AD
inputs. To change those to digital IOs, the user must individually specify
a control direction using INPUT x, OUTPUT x, DIR(x), or
IO(x) commands. After that they will remain digital IOs until the
next reset or power up.
All pins can be used for the software PWM function, and 8 pins
can be used for the hardware driven HWPWM function.
The wireless ARMmite default baud setting is 19.2Kb, and the
default setting for the BlueSmiRF and Xbee modules are 9600 baud. While
the defaults can be changed for these wireless modules, there is a potential
"chicken and egg" problem getting there. So if the 9600 baud jumper is
connected on RESET, the ARMmite will come up at that baud rate.
The wireless connections do not have sufficient control lines
such that RESET can be controlled from the PC, as well as the RTS line which is
used to load C programs. So the BASICtools and MakeItC will prompt you to
add a jumper or push the reset button where appropriate.
The wireless ARMmite primary power supply is 3.3V. This
voltage is available for user circuitry at 3 pins in the prototype area.
There is also a pad that is connected to the input power.
Input power for the wireless ARMmite require 5V or
greater. It may be a regulated 5V supply or an un-regulated 6V
supply. But it all cases it should not exceed 12V DC. IF YOU ARE USING A BlueSMiRF, this input power is applied
directly to the BlueSmiRF and it must not exceed 6V
. If you are using an unregulated wall transformer, check the open circuit
voltage and make sure it is within these limits.
If the all the connections are made to the USB breakout board
then 5V can be supplied from the USB. That is also available at the USB 5V
pad. When using power from the USB, it should be the only connection for
power (do not connect the 5-6V power).
suggested terminal strip On Shore Tech ED550/12DS or equivalent
3.5mm pitch connector (available at Digikey)