Serial.begin(9600); Serial.println(" I2C Scanner"); } void loop() { byte error, address; int nDevices; Serial.println("Scanning..."); nDevices = 0; for(address = 1; address < 127; address++ ) { // The i2c_scanner uses the return value of // the Write.endTransmisstion to see...
Wire.begin(SLAVE_ADDRESS); // join I2C bus as a slave with address 0x12 } void loop() { }[/code] i2c地址扫瞄 slave 建立後,就要看看 master 如果找到它了。 i2c scanner可以说是 master 板子的最基本例子,可以用作测试线路上连接了的设备的存在(只测试存在性,并非测试其功能)。 i2c_scanner 其实...
Serial.println("\nI2C Scanner"); } voidloop() { byteerror,address; intnDevices; Serial.println("Scanning..."); nDevices=0; for(address=1;address<127;address++) { // The i2c_scanner uses the return value of // the Write.endTransmisstion to see if // a device did acknowledge to ...
for (address = 1; address < 127; address++ ){ Wire.beginTransmission(address); error = Wire.endTransmission(); if (error == 0){ Serial.print("I2C device found at address 0x"); if (address < 16) Serial.print("0"); Serial.print(address, HEX); Serial.println(" !"); nDevices++; ...
Serial.println("\nI2C Scanner"); } void loop(){ byte error, address; int nDevices; Serial.println("Eagler8 Scanning..."); nDevices = 0; for (address = 1; address < 127; address++ ){ Wire.beginTransmission(address); error = Wire.endTransmission(); ...
1.首先我们需要包含使用I2C通信功能的Wire库和使用LCD功能的LCD库。还为 16x2 LCD 定义 LCD 引脚。在此处了解有关将 LCD 与 Arduino 连接的更多信息。 #include #include LiquidCrystal lcd(2, 7, 8, 9, 10, 11); 2. 在 void setup() 我们以波特率 9600 开始串行通信。
I2C (Inter-Integrated Circuit) 集成电路总线是I2CBus的简称,是一种串行通信总线,使用多主从架构。飞利浦公司在1980年代为了让主板,嵌入式系统或手机用以连接低速周边设备而发展。 I2C的正确读法为"I-squared-C"。I2C只使用两条双向漏极开路(Open Drain): 串行数据SDA及串行时钟频率SCL总线,且利用上拉电阻将两条总...
16.intnDevices; 17. 18.Serial.println("Scanning..."); 19. 20.nDevices = 0; 21.for(address = 1; address < 127; address++ ) 22.{ 23.// The i2c_scanner uses the return value of 24.// the Write.endTransmisstion to see if 25.// a device did acknowledge to the address. 26....
2、将如下代码烧入arduino,打开串口界面即可得到I2C设备的地址。 #include <Wire.h> void setup() { Wire.begin(); Serial.begin(9600); Serial.println("nI2C Scanner"); } void loop() { byte error, address; int nDevices; Serial.println("Scanning..."); ...
TWBR = 24; // 400kHz I2C clock (200kHz if CPU is 8MHz) #elif I2CDEV_IMPLEMENTATION == I2CDEV_BUILTIN_FASTWIRE Fastwire::setup(400, true); #endif Serial.begin(115200); while (!Serial); Serial.println(F("Initializing I2C devices...")); ...