C++ (Cpp) SET_LED_RED Examples

Example #1

File: LEDs.c Project: abhijithpecsol/ncsu-ece561-EmbeddedSystemsDesign

// Flash red LED for 100 ms
void flashRedLED(unsigned int periodMS){
	unsigned int subTimer = 0;
	unsigned int lastTime = timer1ms;
	unsigned int previousRed = TPM2_C0V;
	unsigned int previousGreen = TPM2_C1V;
	unsigned int previousBlue = TPM0_C1V;
	
	// make sure red LED is on
	if (previousRed != 0){
		SET_LED_RED(previousRed);
	}
	else {
		SET_LED_RED(200);
	}
	SET_LED_GREEN(0);
	SET_LED_BLUE(0);
	
	// turn the red led on for 100 ms
	while (subTimer < 100){
		if (lastTime != timer1ms){
			subTimer++;
			lastTime = timer1ms;
		}
	}
	
	// turn the LED off
	SET_LED_RED(previousRed);
	SET_LED_GREEN(previousGreen);
	SET_LED_BLUE(previousBlue);
}

Example #2

File: LEDs.c Project: abhijithpecsol/ncsu-ece561-EmbeddedSystemsDesign

	// rudimentary implementation
	void Control_RGB_LEDs(unsigned int red_on, unsigned int green_on, unsigned int blue_on){
		#if ALWAYS_RED == 1
		if (red_on || green_on || blue_on) {
				SET_LED_RED(PWM_ON);
		} else {
				SET_LED_RED(PWM_OFF);
		}
		#else
		if (red_on) {
				SET_LED_RED(PWM_ON);
		} else {
				SET_LED_RED(PWM_OFF);
		}
		if (green_on) {
				SET_LED_GREEN(PWM_ON);
		}	else {
				SET_LED_GREEN(PWM_OFF);
		} 
		if (blue_on) {
				SET_LED_BLUE(PWM_ON);
		}	else {
				SET_LED_BLUE(PWM_OFF);
		}
		#endif
	}

Example #3

File: LEDs.c Project: abhijithpecsol/ncsu-ece561-EmbeddedSystemsDesign

// Over a period of 1 second, fade out from the specified brightness
void fadeOutWhite(){
	unsigned int fadeFrequency = 0;
	unsigned int subTimer = 0;
	unsigned int lastTime = 0;
	static unsigned int fadeBrightness = 0;
	fadeBrightness = TPM2_C0V;
	
	// determine fade frequency
	if (fadeBrightness < 1000){
		fadeFrequency = 1000 / fadeBrightness;		
		if (1000 % fadeBrightness != 0){
			fadeFrequency++;										// round up to nearest whole int
		}
	}
	else {
		fadeFrequency = 1;
	}
	
	// over a period of 1 second, fade to brightness every fadeFrequency ms
	subTimer = 0;
	lastTime = timer1ms;
	while (subTimer <= 1000 || TPM2_C0V != 0){
		if ((timer1ms != lastTime)) {
			subTimer++;
			lastTime = timer1ms;
			if (subTimer % fadeFrequency == 0){
				fadeBrightness--;
				SET_LED_RED(fadeBrightness);
				SET_LED_GREEN(fadeBrightness);
				SET_LED_BLUE(fadeBrightness);
			}
		}
	}
	
	// make sure we are at the right brightness at 1 sec (we will be very close, if not exact)
	fadeBrightness = TPM2_C0V;
	while (fadeBrightness > 0){
		if (fadeBrightness < 5){
			fadeBrightness = 0;
		}
		else {
			fadeBrightness -= 5;
		}
		SET_LED_RED(fadeBrightness);
		SET_LED_GREEN(fadeBrightness);
		SET_LED_BLUE(fadeBrightness);
	}
}

Example #4

File: led.c Project: cancui/Atlas-Embedded-Software

void all_leds_on()
{
	cli();
	SET_LED_GREEN();
	SET_LED_RED();
	SET_LED_YELLOW();
	sei();
}

Example #5

File: led.c Project: cancui/Atlas-Embedded-Software

void delay_and_flash_100ms(uint8_t ms_100)
{
	bool green_status = ISSET_LED_GREEN();
	bool red_status = ISSET_LED_RED();
	bool yellow_status = ISSET_LED_YELLOW();

	while(ms_100--) {
		all_leds_on();
		_delay_ms(50);
		all_leds_off();
		_delay_ms(50);
	}
	
	if(green_status) {
		SET_LED_GREEN();
	}
	if(red_status) {
		SET_LED_RED();
	}
	if(yellow_status) {
		SET_LED_YELLOW();
	}
}

Example #6

File: LEDs.c Project: abhijithpecsol/ncsu-ece561-EmbeddedSystemsDesign

// Set the colors of the LEDs to whatever
void setLEDColor(unsigned int red, unsigned int green, unsigned int blue){
	SET_LED_RED(red);
	SET_LED_GREEN(green);
	SET_LED_BLUE(blue);
}