167 lines
4.4 KiB
C++
167 lines
4.4 KiB
C++
// Author:Frankie.Chu
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// Date:9 April,2012
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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//
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// Modified record:
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//
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/*******************************************************************************/
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#include "TM1637.h"
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#include <Arduino.h>
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static int8_t TubeTab[] = {0x3f,0x06,0x5b,0x4f,
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0x66,0x6d,0x7d,0x07,
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0x7f,0x6f,0x77,0x7c,
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0x39,0x5e,0x79,0x71};//0~9,A,b,C,d,E,F
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TM1637::TM1637(uint8_t Clk, uint8_t Data)
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{
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Clkpin = Clk;
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Datapin = Data;
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pinMode(Clkpin,OUTPUT);
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pinMode(Datapin,OUTPUT);
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}
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void TM1637::init(void)
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{
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clearDisplay();
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}
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void TM1637::writeByte(int8_t wr_data)
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{
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uint8_t i,count1=0;
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for(i=0;i<8;i++) //sent 8bit data
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{
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digitalWrite(Clkpin,LOW);
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if(wr_data & 0x01)digitalWrite(Datapin,HIGH);//LSB first
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else digitalWrite(Datapin,LOW);
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wr_data >>= 1;
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digitalWrite(Clkpin,HIGH);
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}
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digitalWrite(Clkpin,LOW); //wait for the ACK
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digitalWrite(Datapin,HIGH);
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digitalWrite(Clkpin,HIGH);
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pinMode(Datapin,INPUT);
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while(digitalRead(Datapin))
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{
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count1 +=1;
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if(count1 == 200)//
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{
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pinMode(Datapin,OUTPUT);
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digitalWrite(Datapin,LOW);
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count1 =0;
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}
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pinMode(Datapin,INPUT);
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}
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pinMode(Datapin,OUTPUT);
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}
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//send start signal to TM1637
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void TM1637::start(void)
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{
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digitalWrite(Clkpin,HIGH);//send start signal to TM1637
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digitalWrite(Datapin,HIGH);
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digitalWrite(Datapin,LOW);
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digitalWrite(Clkpin,LOW);
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}
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//End of transmission
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void TM1637::stop(void)
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{
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digitalWrite(Clkpin,LOW);
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digitalWrite(Datapin,LOW);
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digitalWrite(Clkpin,HIGH);
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digitalWrite(Datapin,HIGH);
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}
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//display function.Write to full-screen.
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void TM1637::display(int8_t DispData[])
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{
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int8_t SegData[4];
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uint8_t i;
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for(i = 0;i < 4;i ++)
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{
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SegData[i] = DispData[i];
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}
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coding(SegData);
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start(); //start signal sent to TM1637 from MCU
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writeByte(ADDR_AUTO);//
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stop(); //
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start(); //
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writeByte(Cmd_SetAddr);//
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for(i=0;i < 4;i ++)
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{
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writeByte(SegData[i]); //
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}
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stop(); //
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start(); //
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writeByte(Cmd_DispCtrl);//
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stop(); //
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}
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//******************************************
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void TM1637::display(uint8_t BitAddr,int8_t DispData)
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{
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int8_t SegData;
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SegData = coding(DispData);
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start(); //start signal sent to TM1637 from MCU
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writeByte(ADDR_FIXED);//
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stop(); //
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start(); //
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writeByte(BitAddr|0xc0);//
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writeByte(SegData);//
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stop(); //
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start(); //
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writeByte(Cmd_DispCtrl);//
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stop(); //
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}
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void TM1637::clearDisplay(void)
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{
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display(0x00,0x7f);
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display(0x01,0x7f);
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display(0x02,0x7f);
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display(0x03,0x7f);
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}
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//To take effect the next time it displays.
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void TM1637::set(uint8_t brightness,uint8_t SetData,uint8_t SetAddr)
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{
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Cmd_SetData = SetData;
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Cmd_SetAddr = SetAddr;
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Cmd_DispCtrl = 0x88 + brightness;//Set the brightness and it takes effect the next time it displays.
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}
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//Whether to light the clock point ":".
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//To take effect the next time it displays.
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void TM1637::point(boolean PointFlag)
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{
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_PointFlag = PointFlag;
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}
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void TM1637::coding(int8_t DispData[])
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{
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uint8_t PointData;
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if(_PointFlag == POINT_ON)PointData = 0x80;
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else PointData = 0;
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for(uint8_t i = 0;i < 4;i ++)
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{
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if(DispData[i] == 0x7f)DispData[i] = 0x00;
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else DispData[i] = TubeTab[DispData[i]] + PointData;
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}
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}
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int8_t TM1637::coding(int8_t DispData)
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{
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uint8_t PointData;
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if(_PointFlag == POINT_ON)PointData = 0x80;
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else PointData = 0;
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if(DispData == 0x7f) DispData = 0x00 + PointData;//The bit digital tube off
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else DispData = TubeTab[DispData] + PointData;
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return DispData;
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}
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