Controller for LED-strips with chips ws2811. The code doesn't use SPI and I2C.

LedStripController.cpp

#include <iostream>
#include <chrono>
#include <thread>

void switchOnLeds(int firstLed, int lastLed);
void digitalWrite(int pin, bool statement);

int main()
{    
    switchOnLeds(0, 4);
}

void switchOnLeds(int firstLed, int lastLed) {
    const auto BIT_0_HIGH_VOLTAGE_TIME = std::chrono::nanoseconds(250);    //nanoseconds to start transfer the logical 0 for ws2811 in fast mode
    const auto BIT_0_LOW_VOLTAGE_TIME = std::chrono::nanoseconds(1000);    //nanoseconds to end transfer the logical 0 for ws2811 in fast mode

    const auto BIT_1_HIGH_VOLTAGE_TIME = std::chrono::nanoseconds(600);    //nanoseconds to start transfer the logical 1 for ws2811 in fast mode
    const auto BIT_1_LOW_VOLTAGE_TIME = std::chrono::nanoseconds(650);     //nanoseconds to end transfer the logical 1 for ws2811 in fast mode

    const int BITS_FOR_SINGLE_LED = 24;         //how many bits contains a signal for a single LED
    const int PIN = 4;                          //Output pin
    const int LEDS = 10;

    auto programStart = std::chrono::high_resolution_clock::now();
    for (int i = 0; i < LEDS; i++) {
        if (i >= firstLed && i <= lastLed) {
            for (int bit = 0; bit < BITS_FOR_SINGLE_LED; bit++) {                
                digitalWrite(PIN, true);
                std::this_thread::sleep_for(BIT_1_HIGH_VOLTAGE_TIME);                
                digitalWrite(PIN, false);
                std::this_thread::sleep_for(BIT_1_LOW_VOLTAGE_TIME);
            }
        }
        else {
            for (int bit = 0; bit < BITS_FOR_SINGLE_LED; bit++) {
                digitalWrite(PIN, true);
                std::this_thread::sleep_for(BIT_0_HIGH_VOLTAGE_TIME);
                digitalWrite(PIN, false);
                std::this_thread::sleep_for(BIT_0_LOW_VOLTAGE_TIME);
            }
        }
    }
    auto programFinish = std::chrono::high_resolution_clock::now();
    printf("Completed in ");
    std::cout << std::chrono::duration_cast<std::chrono::nanoseconds>(programFinish - programStart).count() << " ns but must be no longer as 300 000 nanoseconds on the Raspberry Pi 3b";
}


void digitalWrite(int pin, bool statement) {
    //something that change the statement of a single pin of the GPIO. This is a ready for use function in the wiringpi library
    //true = HIGH (3.3 VDC)
    //false = LOW (0 VDC)
}