SW1 datasheet(5/20 Pages) 4DSYSTEMS

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microOLED Display Modules

uOLED-160G2

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4. Hardware Interface - Pins

The uOLED-160G2 provides both a hardware and

software interface. This section describes in detail the

hardware interface pins of the device.

4.1. Serial Ports – COM0 UART

The uOLED-160G2 has a dedicated hardware UART

that can communicate with external serial devices.

The primary features are:



Full-Duplex 8 bit data transmission and

reception through the TX and RX pins.



Data format: 8 bits, No Parity, 1 Stop bit.



Auto Baud feature.



Baud rates from 300 baud up to 600K baud.

The Serial port is also the primary interface for

downloading compiled 4DGL application code as well

as future PmmC/Firmware updates for the on-board

GOLDELOX

processor.

Refer

Section

PmmC/Firmware Programming for more details.

TX pin 3 (Serial Transmit):

Asynchronous Serial port Transmit pin, TX. The serial

output data is at TTL voltage levels. Connect this pin to

external serial device Rx signal.

Rx pin 5 (Serial Receive):

Asynchronous Serial port Receive pin, RX. Connect this

pin to external serial device Transmit Tx signal.

4.2. General Purpose I/O

There are 2 GPIO pins available, IO1 and IO2. Each

GPIO has a multitude of high level functions associated

with it and these can be selected within 4DGL user

application code.

Refer to the separate document titled

“Goldelox-4DGL-Internal-Functions.pdf”

for

complete set of built in 4DGL library functions.

IO1 pin 6 (General Purpose IO1):

General purpose IO1 pin. The following table lists the

available GPIO functions and features.

IO2 pin 4 (General Purpose IO2):

General purpose IO2 pin. The following tables lists the

available GPIO funcions and features

Note: Digital GPIO pins are 5.0V tolerant

Input/Output:

Both IO1 and IO2 pins can be programmed to be Inputs

or Outputs. Diagram below shows a LED connected to

IO1 (programmed as an output) and a button

connected to IO2 (programmed as an input).

Analogue to Digital Converter:

The IO1 pin can be programmed as an A/D input.

Option is available to select 8 bit or 10 bit resolution.

Diagram below is a circuit of a Light Dependent

Resistor (LDR) connected to IO1 to measure and

record changes in ambient light.

GPIO Functions and Features

Function

IO1

IO2

Digital Input

✓

Digital Output

✓

A/D Converter 8/10 bits

✓

Joystick – 5 position multi-

switch

✓

Dallas 1-Wire support

✓

Sound Generation, RTTL

Tune

✓

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