# third_party_u8g2

**Repository Path**: talkweb_oh/third_party_u8g2

## Basic Information

- **Project Name**: third_party_u8g2
- **Description**: 适配OH轻量设备的OLED库
- **Primary Language**: C
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 1
- **Forks**: 0
- **Created**: 2021-09-29
- **Last Updated**: 2025-02-05

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

[![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/olikraus/u8g2) 

![https://raw.githubusercontent.com/wiki/olikraus/u8g2/ref/u8g2_logo_transparent_orange.png](https://raw.githubusercontent.com/wiki/olikraus/u8g2/ref/u8g2_logo_transparent_orange.png) 


U8g2: Library for monochrome displays, version 2

U8g2 is a monochrome graphics library for embedded devices. 
U8g2 supports monochrome OLEDs and LCDs, which include the following controllers:
SSD1305, SSD1306, SSD1309, SSD1322, SSD1325, SSD1327, SSD1329, SSD1606, SSD1607, 
SH1106, SH1107, SH1108, SH1122, T6963, RA8835, LC7981, PCD8544, PCF8812, HX1230, 
UC1601, UC1604, UC1608, UC1610, UC1611, UC1701, ST7565, ST7567, ST7588, ST75256, NT7534, IST3020, ST7920, LD7032, KS0108, SED1520, SBN1661, IL3820, MAX7219 
(see [here](https://github.com/olikraus/u8g2/wiki/u8g2setupcpp) for a full list).

The Arduino library U8g2 can be installed from the library manager of the Arduino IDE. U8g2 also includes U8x8 library:
 * U8g2
   * Includes all graphics procedures (line/box/circle draw).
   * Supports many fonts. (Almost) no restriction on the font height.
   * Requires some memory in the microcontroller to render the display.
 * U8x8
   * Text output only (character) device.
   * Only fonts allowed with fit into a 8x8 pixel grid.
   * Writes directly to the display. No buffer in the microcontroller required.

[Setup Guide and Reference Manual](https://github.com/olikraus/u8g2/wiki)


## OpenHarmony使用帮助
参考 example 下的示例工程

目前使用I2C进行驱动，如果要调整请修改 hals/src/u8g2OH.c 文件

```c
// for Talkweb Niobe 开发板
void Hal_I2cInit()
{
    IoTGpioInit(WIFI_IOT_IO_NAME_GPIO_13);
    IoTGpioInit(WIFI_IOT_IO_NAME_GPIO_14);
    IotIoSetFunc(WIFI_IOT_IO_NAME_GPIO_13, IoT_IO_FUNC_GPIO_13_I2C0_SDA);
    IotIoSetFunc(WIFI_IOT_IO_NAME_GPIO_14, IoT_IO_FUNC_GPIO_14_I2C0_SCL);
    IoTI2cInit(WIFI_IOT_I2C_IDX_0, OLED_I2C_BAUDRATE);
}
```



### Talkweb Niobe 

![](./figures/niobe.jpg)


### 润和 wifiiot_hispark_pegasus 

![](./figures/wifiiot_hispark_pegasus.jpg)


### 使用方式

复制 example 下的 u8g2MyDemo 目录，到 applications\app 目录下， 调整 BUILD.gn

```gn
import("//build/lite/config/component/lite_component.gni")

lite_component("app") {
    features = [
        "u8g2MyDemo:u8g2_example"
    ]
}
```

编译 ~

### note
* 默认只支持SSD1306 OLED,如果有其他屏幕的需求，可以去改 third_party\u8g2\BUILD.gn 
* 默认附带海思3861的管脚复用定义
* 默认支持OpenHarmony2.0 以及 OpenHarmony2.2