Display a string in 7 segment display from serial read(A100)

Using Arduino Displays
1

I want to read data from Serial input and display the value in Seven Segment display.
Like input from Serial - A10
Display in 7 Segment display should be - A10
Internally all the values convert into ASCII. like 1 -> 49 , A -> 65 etc.
Could anyone help me or guide me how to proceed?

2

Lets start with your hardware. How are the displays connected? Is it a 3-unit display with common segment lines? Are the digits common-anode or common-cathode?

Are the digits coming in as ASCII letters? www.asciitable.com
I.e, 0 to 9 are 0x30 to 0x39 (decimal 48 to 57) while letter A to F are one set and a to f are another.

So you wait for a letter to come in, read it and subtract the appropriate amount depending on the range it was in, and send it to the display, or wait for 2 more, or wait until an ending character is received (such as Carriag Return, 0x0D), and ignoring any characters that are out of those ranges.

Once you have 3, or 1 or 2 and the end character, display them.

Make a font lookup table that will map the letters to the LED segments

byte fontTable[] = {
0b00111111, // 0 1 = segment on, DP-g-f-e-d-c-b-a
0b00000110, // 1
0b01011011, // 2
//etc.
}

with segments layed out as:
a
f b
g
e c
d DP if used

Send those to the hardware:
LEDsegments = fontTable[characterToDisplay];
Sending will depend on the hardware set up, and if you are multiplexing or not.

3

Hi Sir,

Yes it is common segment line. all the display connected parallel and it is common cathode.
How to select the CharacterToDisplay from Array?

4

Please let me know how to separate the character from one another if we pass alphanumeric value like A1?

5

I think we would need to see your code - posted according to the instructions - in order to work any further.