I don't really understand your suggestions Here in post #47.

I need you to be more specific about what you don't understand. Have you spent time looking at the code?

There are three state machines in my example and only one in yours, so I'd say that they are quite different.

 

The code from here...

The easiest way to do this is to use 3 switch statements - Each switch handles a different LED

This is a great way for a beginner to implement multitasking for simple control programs

I've made a skeleton program that you can build on - Fair warning though, I've just typed this out on my phone, check for bugs!

#include <stdbool.h>
#include <stdio.h>

enum ledState
{
    LED_ON,
    LED_OFF     
};

enum ledList
{
    LED1,
    LED2,
    LED3
};
 
// Updated in interrupt;
volatile bool Tick;
 
// TODO - ISR 10mS that switches "Tick" to true

// Turns LED outputs on/off   
void updateOutput(enum ledList ledNumber, enum ledState state)
{
    // TODO - Hardware specific code for outputs
}

int main(void)
{
    // One tick = 10mS
    const unsigned int led1OnTicks = 20;
    const unsigned int led1OffTicks = 25;
   
    const unsigned int led2OnTicks = 40;
    const unsigned int led2OffTicks = 50;
   
    const unsigned int led3OnTicks = 60;
    const unsigned int led3OffTicks = 75;
   
    enum ledState led1 = LED_OFF, led2 = LED_OFF, led3 = LED_OFF;
   
    int led1Ticks = led1OffTicks, led2Ticks = led2OffTicks, led3Ticks = led1OffTicks;
   
    while(1)
    {
        // blocking can be changed to more LED states if needed
        while(Tick == false)
        {
            continue;
        }
       
        Tick = false;
       
        switch(led1)
        {
            case LED_OFF:
           
                if(led1Ticks-- == 0)
                {
                    led1Ticks = led1OnTicks;
                    led1 = LED_ON;
           
                    updateOutput(LED1, LED_ON);
                }
                break;
           
            case LED_ON:
             
                if(led1Ticks-- == 0)
                {
                    led1Ticks = led1OffTicks;
                    led1 = LED_OFF;
           
                    updateOutput(LED1, LED_OFF);
                }
                break;
        }
       
        switch(led2)
        {
            case LED_OFF:
           
                if(led2Ticks-- == 0)
                {
                    led2Ticks = led2OnTicks;
                    led2 = LED_ON;
           
                    updateOutput(LED2, LED_ON);
                }
                break;
           
            case LED_ON:
             
                if(led2Ticks-- == 0)
                {
                    led2Ticks = led2OffTicks;
                    led2 = LED_OFF;
           
                    updateOutput(LED2, LED_OFF);
                }
                break;
        }
       
        switch(led3)
        {
            case LED_OFF:
           
                if(led3Ticks-- == 0)
                {
                    led3Ticks = led3OnTicks;
                    led3 = LED_ON;
           
                    updateOutput(LED3, LED_ON);
                }
                break;
           
            case LED_ON:
             
                if(led3Ticks-- == 0)
                {
                    led3Ticks = led3OffTicks;
                    led3 = LED_OFF;
           
                    updateOutput(LED3, LED_OFF);
                }
           
                break;
        }
    }
}

#include <stdbool.h>
#include <stdio.h>

enum ledState
{
    LED_ON,
    LED_OFF     
};

enum ledList
{
    LED1,
    LED2,
    LED3
};
 
// Updated in interrupt;
volatile bool Tick;
 
// TODO - ISR 10mS that switches "Tick" to true

// Turns LED outputs on/off   
void updateOutput(enum ledList ledNumber, enum ledState state)
{
    // TODO - Hardware specific code for outputs
}

int main(void)
{
    // One tick = 10mS
    const unsigned int led1OnTicks = 20;
    const unsigned int led1OffTicks = 25;
   
    const unsigned int led2OnTicks = 40;
    const unsigned int led2OffTicks = 50;
   
    const unsigned int led3OnTicks = 60;
    const unsigned int led3OffTicks = 75;
   
    enum ledState led1 = LED_OFF, led2 = LED_OFF, led3 = LED_OFF;
   
    int led1Ticks = led1OffTicks, led2Ticks = led2OffTicks, led3Ticks = led1OffTicks;
   
    while(1)
    {
        // blocking can be changed to more LED states if needed
        while(Tick == false)
        {
            continue;
        }
       
        Tick = false;
       
        switch(led1)
        {
            case LED_OFF:
           
                if(led1Ticks-- == 0)
                {
                    led1Ticks = led1OnTicks;
                    led1 = LED_ON;
           
                    updateOutput(LED1, LED_ON);
                }
                break;
           
            case LED_ON:
             
                if(led1Ticks-- == 0)
                {
                    led1Ticks = led1OffTicks;
                    led1 = LED_OFF;
           
                    updateOutput(LED1, LED_OFF);
                }
                break;
        }
       
        switch(led2)
        {
            case LED_OFF:
           
                if(led2Ticks-- == 0)
                {
                    led2Ticks = led2OnTicks;
                    led2 = LED_ON;
           
                    updateOutput(LED2, LED_ON);
                }
                break;
           
            case LED_ON:
             
                if(led2Ticks-- == 0)
                {
                    led2Ticks = led2OffTicks;
                    led2 = LED_OFF;
           
                    updateOutput(LED2, LED_OFF);
                }
                break;
        }
       
        switch(led3)
        {
            case LED_OFF:
           
                if(led3Ticks-- == 0)
                {
                    led3Ticks = led3OnTicks;
                    led3 = LED_ON;
           
                    updateOutput(LED3, LED_ON);
                }
                break;
           
            case LED_ON:
             
                if(led3Ticks-- == 0)
                {
                    led3Ticks = led3OffTicks;
                    led3 = LED_OFF;
           
                    updateOutput(LED3, LED_OFF);
                }
           
                break;
        }
    }
}