Diff: TM1636.cpp

Revision:

0:864e710889fa

Child:

1:e4450fb0849a

diff -r 000000000000 -r 864e710889fa TM1636.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TM1636.cpp	Thu May 18 08:02:54 2017 +0000
@@ -0,0 +1,177 @@
+//  Author:Frankie.Chu
+//  Date:9 April,2012
+//
+//  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:
+//
+/*******************************************************************************/
+#include "TM1636.h"
+#include "mbed.h"
+
+static int8_t TubeTab[] = {0x3f,0x06,0x5b,0x4f,
+                           0x66,0x6d,0x7d,0x07,
+                           0x7f,0x6f,0x77,0x7c,
+                           0x39,0x5e,0x79,0x71,
+                           0x40,0x00};				//0~9,A,b,C,d,E,F,"-"," "
+                                                 
+TM1636::TM1636(PinName Clk, PinName Data) 
+	: Clkpin(Clk), Datapin(Data)
+{
+  	Datapin.output();
+  	Clkpin.output();    
+}
+
+/*Set the default brightness is BRIGHT_TYPICAL and clear the display*/
+void TM1636::init(void)
+{
+	set(BRIGHTEST);
+	clearDisplay();
+}
+
+void TM1636::writeByte(int8_t wr_data)
+{
+	uint8_t i,count1;   
+	for(i=0;i<8;i++)        								// sent 8bit data
+	{
+		Clkpin = LOW;     
+		if(wr_data & 0x01) Datapin = HIGH;					// LSB first
+		else Datapin = LOW;
+		wr_data >>= 1;      
+		Clkpin = HIGH;
+	}  
+	Clkpin = LOW; 											//wait for the ACK
+	Datapin = HIGH;
+	Clkpin = HIGH;
+	Datapin.input();   
+	while(Datapin)    
+	{ 
+		count1 +=1;
+		if(count1 == 200)
+		{
+			Datapin.output();
+			Datapin = LOW;
+			count1 =0;
+		}
+		Datapin.input();  
+	}
+	Datapin.output();
+}
+
+//send start signal to TM1636
+void TM1636::start(void)
+{
+	Clkpin = HIGH;											//send start signal to TM1637
+	Datapin = HIGH;
+	Datapin = LOW; 
+	Clkpin = LOW;
+}
+
+//End of transmission
+void TM1636::stop(void)
+{
+	Clkpin = LOW;
+	Datapin = LOW;
+	Clkpin = HIGH;
+	Datapin = HIGH;
+}
+
+//display function.Write to full-screen.
+void TM1636::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 TM1636::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 TM1636::clearDisplay(void)
+{
+	display(0x00,0x7f);
+	display(0x01,0x7f);
+	display(0x02,0x7f);
+	display(0x03,0x7f);  
+}
+
+//To take effect the next time it displays.
+void TM1636::set(uint8_t brightness,uint8_t SetData,uint8_t SetAddr)
+{
+	_brightness = brightness;
+	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 TM1636::point(bool PointFlag)
+{
+	_PointFlag = PointFlag;
+}
+
+void TM1636::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;
+	}
+}
+
+int8_t TM1636::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;
+}