1控制LED和继电器

除了 PA11和PA12其他都可以

void setup() {

  pinMode(PC13, OUTPUT);

  pinMode(PC14, OUTPUT);

  pinMode(PC15, OUTPUT);

  pinMode(PA0, OUTPUT);

  pinMode(PA1, OUTPUT);

  pinMode(PA2, OUTPUT);

  pinMode(PA3, OUTPUT);

  pinMode(PA4, OUTPUT);

  pinMode(PA5, OUTPUT);

  pinMode(PA6, OUTPUT);

  pinMode(PA7, OUTPUT);

  pinMode(PA8, OUTPUT);

  pinMode(PA9, OUTPUT);

  pinMode(PA10, OUTPUT);

//  pinMode(PA11, OUTPUT);  // CAN t0  不能用

//  pinMode(PA12, OUTPUT);  // CAN r0  不能用

  pinMode(PA15, OUTPUT);

  pinMode(PB0, OUTPUT);

  pinMode(PB1, OUTPUT);

  pinMode(PB2, OUTPUT);

  pinMode(PB3, OUTPUT);

  pinMode(PB4, OUTPUT);

  pinMode(PB5, OUTPUT);

  pinMode(PB6, OUTPUT);

  pinMode(PB7, OUTPUT);

  pinMode(PB8, OUTPUT);

  pinMode(PB9, OUTPUT);

  pinMode(PB10, OUTPUT);

  pinMode(PB11, OUTPUT);

  pinMode(PB12, OUTPUT);

  pinMode(PB13, OUTPUT);

  pinMode(PB14, OUTPUT);

  pinMode(PB15, OUTPUT);

}

void loop() {

  digitalWrite(PC13, HIGH);

  digitalWrite(PC14, HIGH);

  digitalWrite(PC15, HIGH);  

  digitalWrite(PA0, HIGH);

  digitalWrite(PA1, HIGH);

  digitalWrite(PA2, HIGH);

  digitalWrite(PA3, HIGH);

  digitalWrite(PA4, HIGH);

  digitalWrite(PA5, HIGH);

  digitalWrite(PA6, HIGH);

  digitalWrite(PA7, HIGH);

  digitalWrite(PA8, HIGH);

  digitalWrite(PA9, HIGH);

  digitalWrite(PA10, HIGH);

 // digitalWrite(PA11, HIGH);

 // digitalWrite(PA12, HIGH);

  digitalWrite(PA15, HIGH);  

  digitalWrite(PB0, HIGH);

  digitalWrite(PB1, HIGH);

  digitalWrite(PB2, HIGH);

  digitalWrite(PB3, HIGH);

  digitalWrite(PB4, HIGH);

  digitalWrite(PB5, HIGH);

  digitalWrite(PB6, HIGH);

  digitalWrite(PB7, HIGH);

  digitalWrite(PB8, HIGH);

  digitalWrite(PB9, HIGH);

  digitalWrite(PB10, HIGH);

  digitalWrite(PB11, HIGH);

  digitalWrite(PB12, HIGH);

  digitalWrite(PB13, HIGH);

  digitalWrite(PB14, HIGH);

  digitalWrite(PB15, HIGH);    

  delay(1000);              

  digitalWrite(PC13, LOW);

  digitalWrite(PC14, LOW);

  digitalWrite(PC15, LOW);  

  digitalWrite(PA0, LOW);

  digitalWrite(PA1, LOW);

  digitalWrite(PA2, LOW);

  digitalWrite(PA3, LOW);

  digitalWrite(PA4, LOW);

  digitalWrite(PA5, LOW);

  digitalWrite(PA6, LOW);

  digitalWrite(PA7, LOW);

  digitalWrite(PA8, LOW);

  digitalWrite(PA9, LOW);

  digitalWrite(PA10, LOW);

 // digitalWrite(PA11, LOW);

 // digitalWrite(PA12, LOW);

  digitalWrite(PA15, LOW);   

  digitalWrite(PB0, LOW);

  digitalWrite(PB1, LOW);

  digitalWrite(PB2, LOW);

  digitalWrite(PB3, LOW);

  digitalWrite(PB4, LOW);

  digitalWrite(PB5, LOW);

  digitalWrite(PB6, LOW);

  digitalWrite(PB7, LOW);

  digitalWrite(PB8, LOW);

  digitalWrite(PB9, LOW);

  digitalWrite(PB10, LOW);

  digitalWrite(PB11, LOW);

  digitalWrite(PB12, LOW);

  digitalWrite(PB13, LOW);

  digitalWrite(PB14, LOW);

  digitalWrite(PB15, LOW);    

  delay(1000);

}

　　

2 PWM控制

PWM引脚简易测试程序,总共有12个PWM引脚，16bit即65536级PWM，很精密了：

延迟给100微妙 多了少了都有问题，不正常转

void setup()

{

        pinMode(PB0, PWM);

        pinMode(PA7, PWM);

        pinMode(PA6, PWM);

        pinMode(PA3, PWM);

        pinMode(PA2, PWM);

        pinMode(PA1, PWM);

        pinMode(PA0, PWM);

        pinMode(PB7, PWM);

        pinMode(PB6, PWM);

        pinMode(PA10, PWM);

        pinMode(PA9, PWM);

        pinMode(PA8, PWM);

}

void loop()

{

        for (int i = 1000; i < 65536; i++)

        {

                //delayMicroseconds(100);

              //  delay(1);

                  delay(20);

                pwmWrite(PB0, i);

                pwmWrite(PA7, i);

                pwmWrite(PA6, i);

                pwmWrite(PA3, i);

                pwmWrite(PA2, i);

                pwmWrite(PA1, i);

                pwmWrite(PA0, i);

                pwmWrite(PB7, i);

                pwmWrite(PB6, i);

                pwmWrite(PA10, i);

                pwmWrite(PA9, i);

                pwmWrite(PA8, i);

        }

         for (int i = 65536; i > 1000; i--)

        {

               // delayMicroseconds(100);

              //  delay(1);

                  delay(20);

                pwmWrite(PB0, i);

                pwmWrite(PA7, i);

                pwmWrite(PA6, i);

                pwmWrite(PA3, i);

                pwmWrite(PA2, i);

                pwmWrite(PA1, i);

                pwmWrite(PA0, i);

                pwmWrite(PB7, i);

                pwmWrite(PB6, i);

                pwmWrite(PA10, i);

                pwmWrite(PA9, i);

                pwmWrite(PA8, i);

        }

}

　　

int pins[12] = {0, 1, 2, 3, 6, 7, 8, 9, 10, 16, 22, 23};

void setup()

{

  for (int i = 0; i < 12; i++)

  {

    pinMode(pins[i], PWM);

  }

}

void loop()

{

  for (int i = 0; i < 100; i++)

  {

    for (int j = 0; j < 12; j++)

    {

      pwmWrite(pins[j], i * i);

    }

    delay(20);

  }

}

　

IO引脚读取

int value = digitalRead(pin);

ADC引脚

实际测试  0-4096  2的10次方

　

在pa7接一个光敏电阻，完全遮盖4095  手机强光基本几十

void setup()

{

  Serial.begin(115200);

  pinMode(PB0, INPUT_ANALOG);

  pinMode(PA7, INPUT_ANALOG);

  pinMode(PA6, INPUT_ANALOG);

  pinMode(PA5, INPUT_ANALOG);

  pinMode(PA4, INPUT_ANALOG);

  pinMode(PA3, INPUT_ANALOG);

  pinMode(PA2, INPUT_ANALOG);

  pinMode(PA1, INPUT_ANALOG);

  pinMode(PA0, INPUT_ANALOG);

  pinMode(PB1, INPUT_ANALOG);

}

void loop()

{

  delay(50);

  Serial.print("\tPB0="); Serial.print(analogRead(PB0));

  Serial.print("\tPA7="); Serial.print(analogRead(PA7));

  Serial.print("\tPA6="); Serial.print(analogRead(PA6));

  Serial.print("\tPA5="); Serial.print(analogRead(PA5));

  Serial.print("\tPA4="); Serial.print(analogRead(PA4));

  Serial.print("\tPA3="); Serial.print(analogRead(PA3));

  Serial.print("\tPA2="); Serial.print(analogRead(PA2));

  Serial.print("\tPA1="); Serial.print(analogRead(PA1));

  Serial.print("\tPA0="); Serial.print(analogRead(PA0));

  Serial.print("\tPB1="); Serial.println(analogRead(PB1));

}

　　

中断

　　

void onChange()

{

   if ( digitalRead(PA8) == LOW )

      Serial.println("Key Down");

   else

      Serial.println("Key UP");

}

void setup()

{

   Serial.begin(9600); //打开串口

   pinMode( PA8, INPUT);//设置管脚为输入

   //Enable中断管脚, 中断服务程序为onChange(), 监视引脚变化

 /*

LOW                  低电平触发

CHANGE            电平变化，高电平变低电平、低电平变高电平

RISING              上升沿触发

FALLING            下降沿触发

HIGH                 高电平触发(该中断模式仅适用于Arduino due)

 */

   attachInterrupt( PA8, onChange, CHANGE);

}

void loop()

{

  // 模拟长时间运行的进程或复杂的任务。

  for (int i = 0; i < 100; i++)

  {

    // 什么都不做，等待10毫秒

    delay(10);

  }

}

　　

允许的串口

总共3个硬件外接串口Serial1、Serial2、Serial3，一个USB虚拟串口Serial：

void setup()

{

  Serial.begin(115200);

  Serial1.begin(115200);  //TX=PA9,RX=PA10

  Serial2.begin(115200);  //TX=PA2,RX=PA3

  Serial3.begin(115200);  //TX=PB10,RX=PB11

}

void loop()

{

  delay(100);

  Serial.println("Test Serial");

  Serial1.println("Test Serial1");

  Serial2.println("Test Serial2");

  Serial3.println("Test Serial3");

}

　　

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