基于Arduino做的TM1638的電子計時練習程序,可調亮度

ID:962653 · 發表于 2021-8-27 17:52

程序主題不長，本人萌新，制作了一個計時程序。
程序是利用Arduino軟件寫的，板子是Arduino UNO, 還有TM1638，8位數碼管。

該程序會從1數到100000，按鍵也可以使用，按第一個按鍵會使亮度降低，第二個會使亮度增高，亮度會利用數字上方的led燈顯示，共8級。
其余的按鍵則不會有用。
改程序并不長，寫法比較直白。程序將會列在下方，并有附件。謝謝大家。

Arduino源程序如下:
//-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
const int TM1638_STB = 7;
const int TM1638_CLK = 9;
const int TM1638_DIO = 8;

int brightness=0x88;                      //set light,0x88-0x8f
int Led_light=1;
//----------------------------------------------------------------
void writeByte(int value)
{
  unsigned char i;
  pinMode(TM1638_DIO,OUTPUT);
  for(i=0;i<8;i++)
  {
   digitalWrite(TM1638_CLK,LOW);
   if(value&0X01){
   digitalWrite(TM1638_DIO,HIGH);
   }
   else{
   digitalWrite(TM1638_DIO,LOW);
   }
   value>>=1;
   digitalWrite(TM1638_CLK,HIGH);
  }
  digitalWrite(TM1638_CLK,LOW);
}
//-----------------------------------------------------------------------
void sendCommand(uint8_t value)
{
  digitalWrite(TM1638_STB, LOW);
  writeByte(value);
  digitalWrite(TM1638_STB, HIGH);
}
//------------------------------------------------------------------------
void reset()
{
  sendCommand(0x40);                      // set auto increment mode
  digitalWrite(TM1638_STB, LOW);
  writeByte(0xc0);                         // set starting address to 0
  for(uint8_t i = 0; i < 8; i++)
  {
writeByte(0x00);
  }
  digitalWrite(TM1638_STB, HIGH);
}
//---------------------------------------------------------------------
void setup()
{
//Serial.begin(9600);                   // 初始化串口
  pinMode(TM1638_STB, OUTPUT);
  pinMode(TM1638_CLK, OUTPUT);
  pinMode(TM1638_DIO, OUTPUT);
  reset();
  sendCommand(brightness);
}
//---------------------------------------------------------------------
void loop()
{
  for(int i = 0;i < 10000000; i++)
  {
showNumber(i);
//------------------------------
buttonLoop();
//------------------------------
brightnessSet();
  }
}
//--------------------------------------------------------------------------
int readByte(void)                         //read a byte.
{
  unsigned char i;
  int value=0;;
  pinMode(TM1638_DIO,INPUT);                //set input mode.
  for(i=0;i<8;i++)
  {
value>>=1;
digitalWrite(TM1638_CLK,LOW);
delay(1);
if(digitalRead(TM1638_DIO)==HIGH)
   value|=0x80;
digitalWrite(TM1638_CLK,HIGH);
  }
  digitalWrite(TM1638_CLK,LOW);
  pinMode(TM1638_DIO,OUTPUT);//set output mode.
  return value;
}
//--------------------------------------------------------------------------
int readButtons(void)
{
  int buttons = 0;
  digitalWrite(TM1638_STB, LOW);
  pinMode(TM1638_DIO, OUTPUT);
  shiftOut(TM1638_DIO, TM1638_CLK, LSBFIRST, 0x42);
  pinMode(TM1638_DIO, INPUT);
  for (uint8_t i = 0; i < 4; i++)
  {
int v = readByte() << i;
buttons |= v;
  }
  pinMode(TM1638_DIO, OUTPUT);
  digitalWrite(TM1638_STB, HIGH);
  return buttons;
}
//--------------------------------------------------------------------------
void setLed(int value, int position)
{
  pinMode(TM1638_DIO, OUTPUT);
  sendCommand(0x44);
  digitalWrite(TM1638_STB, LOW);
  writeByte(0xC1 + (position << 1));
  writeByte(value);
  digitalWrite(TM1638_STB, HIGH);
}
//-----------------------------------------------------------------------
void showNumber(int number)
{
  const int digital[]={0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07, 0x7F, 0x6F};
  int pos = 7;
  while(pos >=0){
digitalWrite(TM1638_STB, LOW);
writeByte(0xc0 + pos * 2);
if(number > 0){
   int dig = number % 10;
   writeByte(digital[dig]);
   number /= 10;
}
else{
   writeByte(0);
}
digitalWrite(TM1638_STB, HIGH);
pos--;
  }
}
//------------------------------------------------------------------
void buttonLoop()
{
  int buttons = readButtons();
  int  xx;
  for(int position = 0; position < 8; position++)
  {
int mask = 0x01 << position;
  setLed(buttons & mask ? 1 : 0 , position); // ？前面條件為真，取：前面的1
  switch(brightness)
   {
   case 0x88:
            setLed(1 , 8);
   break;
   case 0x89:
            setLed(1 , 8);setLed(1 , 1);
   break;
   case 0x8a:
            setLed(1 , 8);setLed(1 , 1);setLed(1 , 2);
   break;
   case 0x8b:
            setLed(1 , 8);setLed(1 , 1);setLed(1 , 2);setLed(1 , 3);
   break;
   case 0x8c:
            setLed(1 , 8);setLed(1 , 1);setLed(1 , 2);setLed(1 , 3);setLed(1 , 4);
   break;
   case 0x8d:
            setLed(1 , 8);setLed(1 , 1);setLed(1 , 2);setLed(1 , 3);setLed(1 , 4);setLed(1 , 5);
   break;
   case 0x8e:
            setLed(1 , 8);setLed(1 , 1);setLed(1 , 2);setLed(1 , 3);setLed(1 , 4);setLed(1 , 5);setLed(1 , 6);
   break;
   case 0x8f:
            setLed(1 , 8);setLed(1 , 1);setLed(1 , 2);setLed(1 , 3);setLed(1 , 4);setLed(1 , 5);setLed(1 , 6);setLed(1 , 7);
   break;
   }
  }
}
//------------------------------------------------------------------
void brightnessSet()
{
  int buttons = readButtons();
switch(buttons)
{
case 1:
      if (brightness > 0x88)
      {
      brightness--;
      sendCommand(brightness);
      }
      else brightness = 0x88;
      delay(200);
break;
case 2:
      if (brightness < 0x8f)
      {
         brightness++;
      sendCommand(brightness);
      }
      else brightness = 0x8f;
      delay(200);
break;
}
}