// Author:Fred.Chu // Date:9 April,2013 // // Applicable Module: // 4-Digit Display by catalex // 4-Digit Display (D4056A) by catalex // Store: http://www.aliexpress.com/store/1199788 // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2.1 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA // // Modified record: // Author: Nicu FLORICA (niq_ro) - http://www.tehnic.go.ro & http://www.arduinotehniq.com // Date: 25 november, 2015 // Note: put sign for degree, letter 'r' & 'h' // Date: 10 march, 2016 // Note: put sign for degree, letter 'r', 'h' & 'n' /*******************************************************************************/ #include "TM1637.h" #include static int8_t TubeTab[] = {0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c, 0x39,0x5e,0x79,0x71, 0x40,0x00,0x63,0x50,0x74,0x54 };//0~9,A,b,C,d,E,F,"-"," ",degree,r,h,n TM1637::TM1637(uint8_t Clk, uint8_t Data) { Clkpin = Clk; Datapin = Data; pinMode(Clkpin,OUTPUT); pinMode(Datapin,OUTPUT); } void TM1637::init(uint8_t DispType) { _DispType = DispType; BlankingFlag = 1; DecPoint = 3; clearDisplay(); } void TM1637::writeByte(int8_t wr_data) { uint8_t i,count1; for(i=0;i<8;i++) //sent 8bit data { digitalWrite(Clkpin,LOW); if(wr_data & 0x01)digitalWrite(Datapin,HIGH);//LSB first else digitalWrite(Datapin,LOW); delayMicroseconds(3); wr_data >>= 1; digitalWrite(Clkpin,HIGH); delayMicroseconds(3); } digitalWrite(Clkpin,LOW); //wait for the ACK digitalWrite(Datapin,HIGH); digitalWrite(Clkpin,HIGH); pinMode(Datapin,INPUT); while(digitalRead(Datapin)) { count1 +=1; if(count1 == 200)// { pinMode(Datapin,OUTPUT); digitalWrite(Datapin,LOW); count1 =0; } pinMode(Datapin,INPUT); } pinMode(Datapin,OUTPUT); } //send start signal to TM1637 void TM1637::start(void) { digitalWrite(Clkpin,HIGH);//send start signal to TM1637 digitalWrite(Datapin,HIGH); // delayMicroseconds(2); digitalWrite(Datapin,LOW); digitalWrite(Clkpin,LOW); } //End of transmission void TM1637::stop(void) { digitalWrite(Clkpin,LOW); // delayMicroseconds(2); digitalWrite(Datapin,LOW); // delayMicroseconds(2); digitalWrite(Clkpin,HIGH); // delayMicroseconds(2); digitalWrite(Datapin,HIGH); } //display function.Write to full-screen. void TM1637::display(int8_t DispData[]) { int8_t SegData[4]; uint8_t i; for(i = 0;i < 4;i ++) { SegData[i] = DispData[i]; } coding(SegData); start(); //start signal sent to TM1637 from MCU writeByte(ADDR_AUTO);// stop(); // start(); // writeByte(Cmd_SetAddr);// for(i=0;i < 4;i ++) { writeByte(SegData[i]); // } stop(); // start(); // writeByte(Cmd_DispCtrl);// stop(); // } //****************************************** void TM1637::display(uint8_t BitAddr,int8_t DispData) { int8_t SegData; SegData = coding(DispData); start(); //start signal sent to TM1637 from MCU writeByte(ADDR_FIXED);// stop(); // start(); // writeByte(BitAddr|0xc0);// writeByte(SegData);// stop(); // start(); // writeByte(Cmd_DispCtrl);// stop(); // } void TM1637::display(double Decimal) { int16_t temp; if(Decimal > 9999)return; else if(Decimal < -999)return; uint8_t i = 3; if(Decimal > 0) { for( ;i > 0; i --) { if(Decimal < 1000)Decimal *= 10; else break; } temp = (int)Decimal; if((Decimal - temp)>0.5)temp++; } else { for( ;i > 1; i --) { if(Decimal > -100)Decimal *= 10; else break; } temp = (int)Decimal; if((temp - Decimal)>0.5)temp--; } DecPoint = i; Serial.println(Decimal); BlankingFlag = 0; display(temp); } void TM1637::display(int16_t Decimal) { int8_t temp[4]; if((Decimal > 9999)||(Decimal < -999))return; if(Decimal < 0) { temp[0] = INDEX_NEGATIVE_SIGN; Decimal = abs(Decimal); temp[1] = Decimal/100; Decimal %= 100; temp[2] = Decimal / 10; temp[3] = Decimal % 10; if(BlankingFlag) { if(temp[1] == 0) { temp[1] = INDEX_BLANK; if(temp[2] == 0) temp[2] = INDEX_BLANK; } } } else { temp[0] = Decimal/1000; Decimal %= 1000; temp[1] = Decimal/100; Decimal %= 100; temp[2] = Decimal / 10; temp[3] = Decimal % 10; if(BlankingFlag) { if(temp[0] == 0) { temp[0] = INDEX_BLANK; if(temp[1] == 0) { temp[1] = INDEX_BLANK; if(temp[2] == 0) temp[2] = INDEX_BLANK; } } } } BlankingFlag = 1; display(temp); } void TM1637::clearDisplay(void) { display(0x00,0x7f); display(0x01,0x7f); display(0x02,0x7f); display(0x03,0x7f); } //To take effect the next time it displays. void TM1637::set(uint8_t brightness,uint8_t SetData,uint8_t SetAddr) { Cmd_SetData = SetData; Cmd_SetAddr = SetAddr; Cmd_DispCtrl = 0x88 + brightness;//Set the brightness and it takes effect the next time it displays. } //Whether to light the clock point ":". //To take effect the next time it displays. void TM1637::point(boolean PointFlag) { if(_DispType == D4036B) _PointFlag = PointFlag; } void TM1637::coding(int8_t DispData[]) { uint8_t PointData; if(_PointFlag == POINT_ON)PointData = 0x80; else PointData = 0; for(uint8_t i = 0;i < 4;i ++) { if(DispData[i] == 0x7f)DispData[i] = 0x00; else DispData[i] = TubeTab[DispData[i]] + PointData; } if((_DispType == D4056A)&&(DecPoint != 3)) { DispData[DecPoint] += 0x80; DecPoint = 3; } } int8_t TM1637::coding(int8_t DispData) { uint8_t PointData; if(_PointFlag == POINT_ON)PointData = 0x80; else PointData = 0; if(DispData == 0x7f) DispData = 0x00 + PointData;//The bit digital tube off else DispData = TubeTab[DispData] + PointData; return DispData; } /*void TM1637::coding(float Decimal,DispData[]) { uint16_t int_part; if(Decimal > 9999)return; else if(Decimal < -999)return; if(Decimal > 0) { uint8_t i = 0; for(i < 3; i ++) { if(Decimal < 1000)Decimal *= 10; else break; } } }*/