I've put together a simple library for I2C LCD displays using the HD44780 driver to perform most of the basic tasks that might be useful for simple projects. I'm posting mainly because these displays are freque
esp32 i2s lcd 一、基本概念及特性 IIC时钟信号由主机提供,属于同步通信协议 一般硬件设计时需要对I2C SDA和SCLK均加上拉,此时保持总线空闲态为全高。 因为接收和发送共用一根数据线,所以I2C是半双工网络 其传输速度最大值为1Mbps,可以配置为400Kbps、100Kbps(标准传输速度) 因为是半双工,所以整个读写过程一般是...
在这里了解更多关于用Arduino IDE编程ESP32的信息。 获取OLED模块的I2C地址: 这里OLED和ESP32之间使用I2C通信,所以我们需要显示器的I2C地址。128*64 OLED的I2C地址一般为0x3C。要找到OLED模块的I2C地址,将OLED模块与ESP32连接,上传以下代码并打开串行监视器。你会看到OLED的地址。此地址将在最终代码中使用。 利用ESP3...
Then, we’ll move to the Arduino Core libraries that implement drivers for the ESP32 I2C peripheral and how to use its API functions. It’s something similar to the commonly known Arduino Wire library as we’ll see. Without further ado, let’s get right into it!
class I2cLcd(LcdApi): """實現通過 PCF8574 連接 I2C 的 HD44780 字符 LCD。"""# 初始化 I2cLcd 類別 def __init__(self, i2c, i2c_addr, num_lines, num_columns): self.i2c = i2c # I2C 通訊 self.i2c_addr = i2c_addr # I2C 地址 ...
LCD Related Functions In order to initialise the LCD, we need to send some set of commands. The i2c-lcd library contains these commands and the functions which send these commands and data to the LCD. In order to send the command or data to the LCD, we need to follow some set of ste...
LCD都需要背光,而OLED不需要,因为它是自发光的。另外,OLED的功耗比LCD低得多,相同显示面积的功耗仅相当于LCD的1/3。OLED尺寸难以大型化,但是分辨率确可以做到很高,非常适合手持式移动设备。 这里用0.96 168x64常见的1.3寸OLED显示屏分为SPI和I2C两种通信方式,白色、蓝色、黄蓝双色三种颜色。 购买7pin,可以学习iic...
U8g2是一个用于嵌入式设备的单色图形库,全称为“Universal 8bit Graphics Library version2”。它由Oliver Kraus开发,专门为微控制器设计,用于驱动各种单色LCD和OLED显示屏。U8g2库支持多种不同的显示设备,包括各种尺寸和分辨率的显示屏。 U8g2库的特点包括: ...
Liquid Crystal I2C LCD Library (By: Robojax) 这个库不能用 使用LiquidCrystal_I2C By:Frank de Brabander的版本 INA226的库名是:INA226Lib /* INA226 Bi-directional Current/Power Monitor. Simple Example. Read more: http://www.jarzebski.pl/arduino/czujniki-i-sensory/cyfrowy-czujnik-pradu-mocy-ina...
esp32-i2c-lcd1602 Introduction This component provides useful access functions for the I2C-LCD1602 device, which is compatible with the HD44780 LCD controller. It uses a PCF8574A Remote 8-bit I/O Expander over the I2C bus, allowing the controller to be programmed via I2C using 4-bit mode....