arduino I2C从机接收其他主机写入的数据怎么做呢
下面是和主机读取的代码，写入的话应该怎么做// Wire Slave Receiver
// by Nicholas Zambetti <http://www.zambetti.com>
// Demonstrates use of the Wire library
// Receives data as an I2C/TWI slave device
// Refer to the "Wire Master Writer" example for use with this
// Created 29 March 2006
// This example code is in the public domain.
#include <Wire.h>
int addr = 0;
void setup() {
Wire.begin(16); // join i2c bus with address #8
Wire.onReceive(receiveEvent); // register event
Wire.onRequest(ggyy);
Serial.begin(9600); // start serial for output
}
void loop() {
delay(100);
}
// function that executes whenever data is received from master
// this function is registered as an event, see setup()
void receiveEvent(int howMany)
{
while (1 < Wire.available())
{ // loop through all but the last
char c = Wire.read(); // receive byte as a character
Serial.print("char:");
Serial.print(c,HEX); // print the character
}
addr = Wire.read(); // receive byte as an integer
Serial.print("int:");
Serial.println(addr,HEX); // print the integer
W
}
void ggyy()
{
//Wire.write("5653454353453543"); // 送出 6 个char给IC 上的主机
if(addr == 0x03)
{
Wire.write(0x35);
}
if(addr == 0x04)
{
Wire.write(0x36);
}
}
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