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UM025503-0814 Shell Commands

Zilog Educational Platform

User Manual

specifying the pins to set)

Example: setpins PA FF on : Will set all pins of Port A to 1s

Example 2.

To view a list of application shields integrated into the root shell, enter the

following command:

startshield list

The console will display the following response:

WLAN

BT

WoS

The Educational Platform ships with a System Test shield that will show if all of the avail-

able I/O outputs are in working order by turning each line’s LED ON.

Testing Shell Commands

To test a shell command, observe the following procedure.

1. Insert the shield into place and use the

setpins command to test PA thru PE and

seven individual ports, as follows:

Setpins PA FF ON

As a result, all pins on Port A are turned ON.

Setpins PA 55 ON

The command above turns on all alternating bits, as diagrammed below.

Weight 8 4 2 1 8 4 2 1 → 8 4 2 1 8 4 2 1

Bit 7 6 5 4 3 2 1 0

→ 7 6 5 4 3 2 1 0

PA = 0x55 0 1 0 1 0 1 0 1 PA = 0xFF 1 1 1 1 1 1 1 1

On Port A, bits 4 and 5 can be controlled only when the UART is not in use; otherwise,

these pins are used as the Tx and Rx signals.

2. Repeat Step 1

for ports PB, PC, PD and PE. All LEDs should illuminate.

Note:

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 37 38

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