56 lines
1.4 KiB
ReStructuredText
56 lines
1.4 KiB
ReStructuredText
.. _grove-lcd-sample:
|
|
|
|
Grove LCD
|
|
#########
|
|
|
|
Overview
|
|
********
|
|
|
|
This sample displays an incrementing counter through the Grove LCD, with
|
|
changing backlight.
|
|
|
|
Requirements
|
|
************
|
|
|
|
To use this sample, the following hardware is required:
|
|
|
|
* Arduino 101 or Quark D2000 Devboard
|
|
* `Grove LCD module`_
|
|
* `Grove Base Shield`_ [Optional]
|
|
|
|
Wiring
|
|
******
|
|
|
|
You will need to connect the Grove LCD via the Grove shield onto a board that
|
|
supports Arduino shields.
|
|
|
|
On some boards you will need to use 2 pull-up resistors (10k Ohm) between the
|
|
SCL/SDA lines and 3.3V.
|
|
|
|
.. note::
|
|
|
|
The I2C lines on Quark SE Sensor Subsystem does not have internal pull-up, so
|
|
external one is required.
|
|
|
|
Take note that even though SDA and SCL are connected to a 3.3V power source, the
|
|
Grove LCD VDD line needs to be connected to the 5V power line, otherwise
|
|
characters will not be displayed on the LCD (3.3V is enough to power just the
|
|
backlight).
|
|
|
|
|
|
Building and Running
|
|
********************
|
|
|
|
This sample should work on any board that has I2C enabled and has an Arduino
|
|
shield interface. For example, it can be run on the Quark D2000 DevBoard as
|
|
described below:
|
|
|
|
.. zephyr-app-commands::
|
|
:zephyr-app: samples/grove/lcd
|
|
:board: quark_d2000_crb
|
|
:goals: flash
|
|
:compact:
|
|
|
|
.. _Grove Base Shield: http://wiki.seeedstudio.com/wiki/Grove_-_Base_Shield
|
|
.. _Grove LCD module: http://wiki.seeed.cc/Grove-LCD_RGB_Backlight/
|