Difference between revisions of "2.23inch OLED HAT"
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===Exampels=== | ===Exampels=== | ||
We provide examples for this module based on three popular hardware platform (STM32, Arduino and RaspberryPi). The libraries include supports Drawing points, lines, figures and displaying strings. | We provide examples for this module based on three popular hardware platform (STM32, Arduino and RaspberryPi). The libraries include supports Drawing points, lines, figures and displaying strings. | ||
| + | |||
| + | You can download the codes from [[#Demo codes] and unzip it to get examples. | ||
;STM32 examples | ;STM32 examples | ||
| − | STM32 example is based on | + | STM32 example is based on Waveshare ([https://www.waveshare.com/xnucleo-f103rb.htm XNULCEO-F103RB]) |
{|class=wikitable style="text-align:center" | {|class=wikitable style="text-align:center" | ||
| + | |+ I2C Interface | ||
!2.23inch OLED HAT!!STM32 Board | !2.23inch OLED HAT!!STM32 Board | ||
|- | |- | ||
| Line 87: | Line 90: | ||
|CLK||PB13 | |CLK||PB13 | ||
|} | |} | ||
| + | {|class="wikitable" style="text-align:center" | ||
| + | |+ SPI interface | ||
| + | !2.23inch OLED HAT!!STM32 Board | ||
| + | |- | ||
| + | |VCC||3.3V | ||
| + | |- | ||
| + | |GND||GND | ||
| + | |- | ||
| + | |DIN||PB15 | ||
| + | |- | ||
| + | |CLK||PB13 | ||
| + | |- | ||
| + | |CS||PB12 | ||
| + | |- | ||
| + | |DC||PC6 | ||
| + | |- | ||
| + | |RST||PC2 | ||
| + | |} | ||
| + | *Connect | ||
==Resource== | ==Resource== | ||
Revision as of 04:08, 4 September 2019
| ||
Instruction
This is a 2.23inch OLED display within controller.You can directly add it on Raspberry Pi by the 40 PIN pinheader, or connect it to other hardware platform via the IIC and SPI interfaces.The interface of 2.23inch OLED HAT is default SPI, you can also switch to I2C by soldering the resitors on the back of OLED.
Specification
| Controller | SSD1305 |
| Interface | SPI/I2C (default SPI) |
| Display size | 2.23inch |
| Pixel size | 0.41mm x 0.39mm |
| Display color | White |
| Working voltage | 3.3V |
Usage Guide
PINS
| PIN | Description |
|---|---|
| VCC | 3.3V/5V |
| GND | GND |
| DIN | MOSI of SPI interface / SDA of I2C interface |
| CLK | SCLK of SPI interface / SCL of I2C interface |
| CS | Chip select of SPI interface (Low active) / GND when set to I2C itnerface |
| DC | Command / Data selection (SPI) / GND (I2C) |
The interface of 2.23inch OLED HAT is default SPI interface, that is 0R resistors are soldered to SPI sides. If you want to use I2C interface, you need to solder the 0R resistors to I2C side,
Working principle
SSD1305 is a controller for 132*64 resolution OLED, however, this 2.23inch OLED HAT has only 128*32 resolution, therefore only part of SSD1305's buffer are used.
- I2C
At the begging, the Master device sends a byte (7 bits address and 1 bit R/W)to slaver device and wait for a response.
After getting response, the Master device sends a control byte, this byte tells slave device the data followed later is command or data.
Then Master device will send data or command to slaver device.
For more details please refer to Page22 Figure 8-6 of Datasheet
- SPI
For details of the SPI communicating, you can refer to Datasheet Page21 Figure8-5.
Exampels
We provide examples for this module based on three popular hardware platform (STM32, Arduino and RaspberryPi). The libraries include supports Drawing points, lines, figures and displaying strings.
You can download the codes from [[#Demo codes] and unzip it to get examples.
- STM32 examples
STM32 example is based on Waveshare (XNULCEO-F103RB)
| 2.23inch OLED HAT | STM32 Board |
|---|---|
| VCC | 3.3V |
| GND | GND |
| DIN | PB15 |
| CLK | PB13 |
| 2.23inch OLED HAT | STM32 Board |
|---|---|
| VCC | 3.3V |
| GND | GND |
| DIN | PB15 |
| CLK | PB13 |
| CS | PB12 |
| DC | PC6 |
| RST | PC2 |
- Connect
Resource
Documents
Demo codes
Dimension
FAQ
...
Supports
Support
If you require technical support, please go to the Support page and open a ticket.