参考:http://henrysbench.capnfatz.com/henrys-bench/arduino-projects-tips-and-more/arduino-quick-tip-find-your-i2c-address/ Arduino Quick Tip: Find Your I2C Address Contents[show] Don’t Get Hung Up When You Want t
https://www.arduino.cc/en/Tutorial/MasterReader 首先使用 Wire.begin() / Wire.begin(address),以主站或从站身份加入 I2C 总线。 https://www.arduino.cc/en/Reference/WireBegin 接下来,主站使用 Wire.requestFrom() 来指定从哪个从站请求数据。 https://www.arduino.cc/en/Reference/WireRequestFrom...
There are two roles in the operation of I2C, one is “master”, the other is “slave”. Only one master is allowed and can be connected to many slaves. Each slave has its unique address, which is used in the communication between master and the slave. I2C uses two pins, one is for...
bytes, because the Wire library has a buffer of 32 bytesvoidi2c_eeprom_write_page(intdeviceaddress,unsignedinteeaddresspage,byte*data,bytelength){Wire.beginTransmission(deviceaddress);Wire.write((int)(eeaddresspage>>8));// MSBWire.write((int)(eeaddresspage&0xFF));// LSBbytec;for(c=0;c<...
ESP32有两个I2C控制器（也称为端口），负责处理两条I2C总线上的通信。每个I2C控制器都可以作为主机或从机运行。引脚21 默认的SDA, 引脚22是默认的SCL IIC需要引入自带库 Wire.h Wire继承steam类 steam类有的他都有 void requestFrom(uint16_t address, uint8_t size, bool sendStop)请求完成后 ...
bus address is 0x63. By default, the "Si4735 Arduino Library" uses the 0x11 I²C bus address (SEN pin connected to GND). If you want to use the address 0x63 (SEN connected on +3.3V), see the functions (methods) getDeviceI2CAddress, setDeviceI2CAddress and setDeviceOtherI2CAddress...
This module is designed to communicate using the I2C protocol. So, at first, find the SDA and SCL pin of your Arduino uno or compatible board. If you are using Arduino uno board pin A4 and A5 is SDA and SCL pin respectively. Similarly, if you are using Arduino mega pins 20 and 21 ...
/** Uncomment this, if you have keys connected via i2c to a PCF8574 chip. */ //#define UI_HAS_I2C_KEYS// Under which address can the key status requested. This is the address of your PCF8574 where the keys are connected-#define UI_I2C_KEY_ADDRESS 0x40Ok, now the hard part. We...
uint16_t address; // Decoded address uint16_t command; // Decoded command uint16_t extra; // Used for Kaseikyo unknown vendor ID. Ticks used for decoding Distance protocol. uint16_t numberOfBits; // Number of bits received for data (address + command + parity) - to determine protocol...
模拟引脚的扩充可以使用ADS1115模块，这是一个I2C接口的16位ADC模块，每个模块可以扩充四路模拟输入接口。