ESP32有两个I2C通道,任何引脚都可以设置为SDA或SCL。默认的I2C引脚是 GPIO 21 (SDA) GPIO 22 (SCL) 9.SPI 默认情况下,SPI的引脚映射是: 三、其他 1.中断 所有的GPIO都可以配置为中断 2.Strapping Pins ESP32芯片有如下的Strapping Pins: GPIO 0 GPIO 2 GPIO 4 GPIO 5 (开机时必须为高电平) GPIO 12 ...
ESP32有两个I2C通道,任何引脚都可以设置为SDA或SCL。在Arduino IDE下使用ESP32时,默认I2C引脚为: GPIO 21 (SDA) GPIO 22 (SCL) 如果你想在使用连线库时使用其他引脚,你只需要调用: Wire.begin(SDA, SCL); I2S(高速数位音讯传输标准协议) 在ESP32引脚上实际是标记为 DAC1 (GPIO 25)和 DAC2(GPIO 26) S...
ESP32 board comes with a single I2C bus that supports up to 120 I2C devices. By default, two SPI pins for SDA and SCL are defined at GPIO 21 and 22 respectively. However, using the commandwire.begin(SDA, SCL)we can configure any GPIO as an I2C interface. The following two GPIO pins...
28 IO04 GPIO04,输入,输出,高阻 I2C_SDA/ADC_4 VDD3P3_RTC UP/DOWN 27 IO05 GPIO05,输入,输出,高阻 I2C_SCL/ADC_5 VDD3P3_RTC UP/DOWN 26 3.3V 芯片电源,3.3V 25 GND 接地 24 PB_11 GPIO11,输入,输出,高阻 VDD_SPI VDD3P3_CPU UP/DOWN 23 IO07 GPIO07,输入,输出,高阻 SPI2_CS VDD3P...
GPIO 22 (SCL) If you want to use other pins when using the wire library, you just need to call: Wire.begin(SDA,SCL); Learn more about I2C communication protocol with the ESP32 using Arduino IDE:ESP32 I2C Communication (Set Pins, Multiple Bus Interfaces and Peripherals) ...
main.c硬件结构如下,EEPROM 芯片(AT24C02)的 SCL 及 SDA 引脚连接到了 STM32 的I2C 引脚中,结合上拉电阻,构成了 I2C 通讯总线,它们通过 I2C 总线交互。EEPROM 芯片的设备地址:一共有 7 位,其中高 4 位固定为:1010 b,低 3 位则由 A0/A1/A2 信号线的电平决定。设备地址如下图,图中的 R/W 是读写方...
GND液晶屏电源地 VCC液晶屏电源正(3.3V) SCL液晶屏SPI总线时钟信号 SDA液晶屏SPI总线写数据信号 RES液晶屏复位控制信号(低电平复位) DC液晶屏寄存器/数据选择控制信号(低电平:寄存器,高电平:数据) CS液晶屏片选控制信号(低电平使能) BLK液晶屏背光控制信号(高电平点亮,如不需要控制,请接3.3V) ...
在Arduino板上的R3布局(1.0 pinout), SDA(数据线)和SCL(时钟线)都在靠近AREF引脚的针头上。Arduino Due有两个I2C /TWI接口SDA1和SCL1靠近AREF pin,另外一个在20和21上。详情参考这里 注:当连接SDA/SCL引脚时上拉电阻需要被连接,mega2560的上拉电阻在 Arduino之Arduino UNO数据手册 的RX\TX两个LED可以指示...
GPIO21is SDA pin. GPIO22is SCL pin. We have posted an article on I2C LCD interfacing with ESP32. This post explains how to I2C pins. you can read the complete article: I2C LCD interfacing with ESP32 SPI Pins By default, ESP32 has two SPI communication channels VSPI and HSPI and the...
ESP32-WROVER based development board with 1.3 inch OLED (GPIO26-SDA, GPIO27-SCL) TP4056+DW06+LM39100 battery charging, 1 A charging/discharging, over-charging and over-discharging protection, LED indicator (red charging, green full), auto-download function, SD card slot, and a control ...