How to control segments with SevSeg library

Question

The SevSeg library by Dean Reading seems to have a keyword to control individual segments on SSD's. I am using four common cathode, single digit displays. Does anyone know how to program individual segments?

#include "SevSeg.h"; 
SevSeg sevseg; 
void setup() {
 // put your setup code here, to run once:
 byte numDigits = 4;
 byte digitPins[] = {2, 3, 4, 5};
 byte segmentPins[] = {6, 7, 8, 9, 10, 11, 12, 13};
 bool resistorsOnSegments = false; // 'false' means resistors are on digit pins
 byte hardwareConfig = COMMON_CATHODE; // See README.md for options
 bool updateWithDelays = false; // Default 'false' is Recommended
 bool leadingZeros = false; // Use 'true' if you'd like to keep the leading zeros
 bool disableDecPoint = false; // Use 'true' if your decimal point doesn't exist or isn't connected. Then, you only need to specify 7 segmentPins[]
 sevseg.begin(hardwareConfig, numDigits, digitPins, segmentPins, 
 resistorsOnSegments,
 updateWithDelays, leadingZeros, disableDecPoint);
}
void loop() {
 // put your main code here, to run repeatedly:
 sevseg.setSegments();
 //sevseg.setNumber(1234,0);
 //sevseg.setChars("");
 //sevseg.blank();
 sevseg.refreshDisplay();
}

• jsotola: why did you not put a parameter into the setSegments() function call?
• BobaJFET: Because i don't yet know what parameter to put, or how to use the function.
• BobaJFET: tried that. displays a bunch of gibberish.
• BobaJFET: It is always the same if you just enter 1, or 2, or 25 etc.. I don't think that's how the function works. Displaying numbers with the setNumber function works perfectly however, so my displays are wired correctly.
• Juraj: what is unclear here github.com/DeanIsMe/SevSeg/blob/…

Answer 1

You can't with that library. The author has not provided any public methods that will do the job.

There are private methods (segmentOn and segmentOff) that might be usable, but you would have to modify the library to be able to access them.

• BobaJFET: Are 4 and 2 just arbitrary numbers you chose?
• Majenko: Yes. They are the segment number you want to turn on or off.
• BobaJFET: How would you specify which digit?
• Majenko: Probably with different numbers. Experiment and find out.
• BobaJFET: Last question.. Where should those functions be placed within the code? I'm getting "private within this context".