Displaying value on a 2 lines 4 digit 7-segment code

[ajit_nayak87]

Displaying value on 2 line 4 digit 7 segment code

I have using arduino Uno . I have used serial in parallel out to display the parameter. Here i am pasting the piece of code.

Totally i have 8 digit of 7 segment display.Dissect & Dissect2 split the value and place into segment

Currently i have test condition under current fault.
with below piece of function I could able to display 001.3 on top and UC-F at bottom.

I am looking for C function where i could able to display like

R01.3 on top and UC-F on bottom.someone help me coding to display character like mentioned.

const unsigned char DISPTABLE[28] = {0x03,0x9F,0x25,0x0D,0x99,0x49,0x41,0x1F,0x01,0x09,0x11,0x83,0x31,
						  			  //0  //1  //2  //3  //4  //5  //6  //7  //8  //9  //A  //U  //P
		              			     0xD1,0xE3,0x89,0x63,0xE1,0xF5,0xC1,0x61,0x71,0xF3,0xFD,0xD5,0x85,0xFF,0x91};
					     			  //h  //L  //Y  //C  //t  //r  //b   //E //F  //I  //-  //n //d  //blank //H


 
 float Rph_Current=13.0;
 float Yph_Current=0.0;
 float Bph_Current=1.0;





void Split(unsigned int Value) {		// Spliting of process value in digits form
	unsigned char a,Temp;
	for(a = 4; a >= 1 ; a--) {
		Temp = Value%10;
		Value = Value/10;
		LEDBuffer_1[a-1] = DISPTABLE[Temp];
	}
}



void Split_2(unsigned int Value) {			// Spliting of process value in digits form
	unsigned char a,Temp;
	for(a = 4; a >= 1 ; a--) {
		Temp = Value%10;
		Value = Value/10;
		LEDBuffer_1[a-1] = DISPTABLE[Temp];
	}

}


//*********************************************************************************
//              Current   scaling
//********************************************************************************
void current_scaling(unsigned int current) {
	if(current>=10000) {
		Dec_pt = 0;
		temp=current/10;
		Dissect(temp);
	} else {
		Dec_pt = 1 ;
		Dissect(current);
	}
}

void Faults(unsigned char Chr1,unsigned char Chr2,unsigned char Chr3,unsigned char Chr4,unsigned char Chr5,unsigned char Chr6,unsigned char Chr7,unsigned char Chr8) {

	LEDBuffer_1[0] = DISPTABLE[Chr1];
	LEDBuffer_1[1] = DISPTABLE[Chr2];
	LEDBuffer_1[2] = DISPTABLE[Chr3];
	LEDBuffer_1[3] = DISPTABLE[Chr4];
	LEDBuffer_1[4] = DISPTABLE[Chr5];
	LEDBuffer_1[5] = DISPTABLE[Chr6];
	LEDBuffer_1[6] = DISPTABLE[Chr7];
	LEDBuffer_1[7]=  DISPTABLE[Chr8];

}

void Display_par() {
	Disply_Par=1;

	switch(Disply_Par) {

		case 1: 
			Faults(18,0,0,0,11,16,23,21);
			//             (r,0,0,0,U,C,-,F)   
			Display_Current(18,Rph_Current);
			// current_scaling(Rph_Current);
			UnderCurr_Flag=0;
			break;

		case 2:
			Split_2(OL_Point);
			Faults(20,0,0,0,0,14,23,21); //Overload Error
			break;

		default :
			break;




	}

}

 

[KlausST]

Re: Displaying value on 2 line 4 digit 7 segment code

Hi,

R01.3

there is no "R" in your DISPTABLE, thus you can´t display it.

If you want to display it you need to
* decide which of the 7 segements should be active to show an "R".
* then decide which Hex code this is
* then add theis HEX code to your DISPTABLE

Klaus

 

[baileychic]

Re: Displaying value on 2 line 4 digit 7 segment code

Do you still want the code ?

Display is CCD (Common Cathode Display) or CAD (Common Anode Display) type ?

Provide circuit.

 

[kumarharsh]

Re: Displaying value on 2 line 4 digit 7 segment code

Hi,

I have analysed your code. According to how you made your code for each character, I found out that it's a Common Anode (Positive) display {As 7-segment LED's are getting ON when you are giving '0'}. Further, you just provided some related functions for us to analyse which according to me looks fine for the purpose required in your case. So, I logically guess that there is some error in your main function i.e. maybe in void loop() in your arduino C code due to which your data got missed or overlapped.