Problem with getting right data from lookup table

Projects General Guidance
1

Hello everyone,
I have a amall project which take some float values and display them on 7 segment . Using multiplexing segment on serial line. when I run simple loop and get char from my array of segment dat its ok but when I try to get segment data from same array with other char variable it didnot get correct data. I am stuck with getting right data from my char array for 7 segment here is snp of my code please point out problem.
`void getDigitsFromFloat(float number)
{
//char digits[10];
char digit;
char numberStr[8];
dtostrf(number,6, 2, numberStr);
Serial.print("converotF: ");
Serial.println(numberStr);
for (char i=0;i<8;i++ )
{
if (isdigit(numberStr[i]))
digNumber[i] = (char)numberStr[i];
//else
// digit = (digit || 0b00001000);// add decimal point with last digits

    //digNumber[i]  = digit;
}

//digNumber = digits;

}
void print7seg(float cost)
{
getDigitsFromFloat(cost);
char lop=0;
for(char i = 0;i<4;i++)
{
lop = (char)digNumber[i];
shiftData(numTable[lop]); //shif data byte to serial for t segment
// Serial.print("lop: ");
//Serial.println(lop);
// Serial.print("TableNum: ");
//Serial.println(numTable[lop]); //in serial monitor its shows correct lop no but it did not take right no from numTable array??
}

//for(int i =0;i<13;i++)
shiftData(0);
//Latch the data

digitalWrite(Latch,LOW);
delay(5);
digitalWrite(Latch,HIGH);
}
`
Here is my serial monitor display please guide whats wrong with this code

2

Welcome to the forum

Please post your full sketch, using code tags when you do

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In my experience the easiest way to tidy up the code and add the code tags is as follows

Start by tidying up your code by using Tools/Auto Format in the IDE to make it easier to read. Then use Edit/Copy for Forum and paste what was copied in a new reply. Code tags will have been added to the code to make it easy to read in the forum thus making it easier to provide help.

3

Back at you. Welcome to the forum.

It will be clearer when you post the code as @UKHeliBob suggests.

digNumber[i] = (char)numberStr[i];

may not be doing anything useful. I think I can discern confusion between a character like '1' and a number like 1.

Characters for printing are dealt with by their ASCII code . The code for '1' is not 1.

To get the number from a character constant, you can subtract the code for '0'. Fortunately the digit characters are in order, so it works.

Maybe

lop = digNumber[i] - '0';

but like I say, hard to be sure.

a7

4

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