我们在编译ATTINY85和ATTINY84的时候，特别是用arduino IDE的时候，一定要特别注意，他这个引脚都不是一一对应的。下面我们来看一下他是如何对应的呢？
这是attiny84对应arduino引脚的表格。
所以我们在对引脚进行编程控制的时候要看清楚对应的引脚。
下面是attiny85的表格：
好，现在我们来试一下串口：
#include "SoftwareSerial.h"
const int Rx = 3;
const int Tx = 4;
SoftwareSerial mySerial(Rx, Tx);
void setup()
{ pinMode(Rx, INPUT);
pinMode(Tx, OUTPUT);
mySerial.begin(9600);
void loop()
{ mySerial.println(val); }
注意，由于这个单片机没有串口，所以我们只能使用软串口实现串口的功能，但是注意，波特率不要设的太高，9600就可以了。设置的太高，软串口可能会读写出错。
下面是85的软串口测试程序：
#include "SoftwareSerial.h"
const int LED = 1; // this is physical pin 6 for the LED
const int ANTENNA = 2; // this is physical pin 7, connect wire as antenna
const int Rx = 3; // this is physical pin 2
const int Tx = 4; // this is physical pin 3
SoftwareSerial mySerial(Rx, Tx);
int val = 0; // variable to store antenna readings
void setup()
{
pinMode(LED, OUTPUT); // tell Arduino LED is an output
pinMode(Rx, INPUT);
pinMode(Tx, OUTPUT);
mySerial.begin(9600); // send serial data at 9600 bits/sec
}
void loop()
{
digitalWrite(LED, HIGH); // turn LED ON
delay(500);
digitalWrite(LED, LOW); // turn off
delay(500);
val = analogRead(ANTENNA); // read the ANTENNA
mySerial.println(val); // send the value to Serial Monitor, ^Cmd-M
digitalWrite(LED, HIGH); // turn LED ON
delay(10); digitalWrite(LED, LOW); // turn off
delay(500);
}
下面是attiny84的串口程序，来对比一下：
#include "SoftwareSerial.h"
const int LED = 5; // this is physical pin 8 for the LED
const int ANTENNA = 1; // this is physical pin 12, connect wire as antenna
const int Rx = 7; // this is physical pin 6
const int Tx = 6; // this is physical pin 7
SoftwareSerial mySerial(Rx, Tx);
int val = 0; // variable to store antenna readings
void setup()
{
pinMode(LED, OUTPUT); // tell Arduino LED is an output
pinMode(Rx, INPUT);
pinMode(Tx, OUTPUT);
mySerial.begin(9600); // send serial data at 9600 bits/sec
}
void loop()
{
digitalWrite(LED, HIGH); // turn LED ON
delay(500);
digitalWrite(LED, LOW); // turn off
delay(500);
val = analogRead(ANTENNA); // read the ANTENNA
mySerial.println(val); // send the value to Serial Monitor, ^Cmd-M
digitalWrite(LED, HIGH); // turn LED ON
delay(10);
digitalWrite(LED, LOW); // turn off
delay(500);
}
以上程序来自于：http://www.instructables.com/id/ATtiny85-ATtiny84-Analog-Pins-Serial-Communication/