At any given time only the master will be able to initiate the communication. Since there is more than one slave in the bus, the master has to refer to each slave using a different address. When addressed only the slave with that particular address will reply back with the information whil...
https://github.com/TFmini/TFmini-I2C-MasterExample_Arduino 通讯时序如下图所示: 节选代码段: #include <Wire.h> // I2C head file void setup() { // put your setup code here, to run once: Serial.begin(115200); // Initiate the Wire library and join the I2C bus as a master or Slave....
在OpenMV和Arduino中,#你可以通过释放I2C外设,再重新初始化外设,来恢复功能。#OpenMV上的硬件I2C总线都是2bus = pyb.I2C(2, pyb.I2C.SLAVE, addr=0x12) bus.deinit()#完全关闭设备bus = pyb.I2C(2, pyb.I2C.SLAVE, addr=0x12)print("Waiting for Arduino...")#请注意,为了正常同步工作,OpenMV Cam必...
Master Reader/Slave Writer: 编程两个Arduino板之间通过I2C交流,另外一个设置为主读从写(Master Reader/Slave Sender)。 Master Writer/Slave receiver:编程两个Arduino板之间通过I2C交流,另外一个设置为主写从收(Master Writer/Slave Receiver)。 SFR Ranger Reader: 通过I2C读取超声波测距仪接口。
Master Reader/Slave Writer: 编程两个Arduino板之间通过I2C交流,另外一个设置为主读从写(Master Reader/Slave Sender)。 Master Writer/Slave receiver:编程两个Arduino板之间通过I2C交流,另外一个设置为主写从收(Master Writer/Slave Receiver)。 SFR Ranger Reader: 通过I2C读取超声波测距仪接口。
Arduino是Master(主机),MPU6050是Slave(从机): Wire.beginTransmission(MPU6050_ADDRESS);发送了S开始标志,AD器件地址,还有一个 W 写数据位,接下来MPU6050会响应ACK应答 Wire.write(0x6B);发送了寄存器地址(RA),然后ACK应答 Wire.write(0x00);发送要写入PWR_MGMT_1寄存器的数据(DATA),然后ACK Wire.endTransmission...
Arduino I2C 我们有两种模式 - 主代码和从代码 - 使用I2C连接两个Arduino板。它们是: Master Transmitter / Slave Receiver 主发射器/从接收器 Master Receiver / Slave Transmitter 主接收器/从发射器 主发射器/从接收器 让我们现在看看什么是主发送器和从接收器。
Initiate the Wire library and join the I2C bus as a master or slave. This should normally be called only once. Syntax 语法 Wire.begin(address) Parameters 参数 address: the 7-bit slave address (optional); if not specified, join the bus as a master. Returns 返回 None Wire.requestFrom()...
masterserial.println(“slave received from master:”); /prints in serial monitorserial.println(slavereceived);delay(500);lcd.clear();通过旋转一侧的电位器,您可以在另一侧看到lcd上的变化值:以上就是在arduino中进行i2c通信的方式,这里我们不仅使用两个arduino开发板来演示通过i2c通信发送数据,而且还演示了...
The 7 bit I2C slave address registerAddress -uint8_t Address of the register you wish to access (as per the datasheet) *data -uint8_t Array of bytes numberBytes -uint8_t The number of bytes in the array to be sent Returns: