Управление светодиодной лентой RGB. Отладочная плата STM32F103C8T6. Схема. Прошивка.

В проекте использована недорогая отладочная плата с контроллером STM32F103C8T6.

ПРОШИВКА

Прошивка 2019-09-16

nt main(void) {
	initGpio();
	initTimer();
	initAdc();

	while(1) {
		while(!ADC_GetFlagStatus(ADC2, ADC_FLAG_EOC)) {}
		ADC_ClearFlag(ADC2, ADC_FLAG_EOC);
		levelAdc = ADC2->DR;

		if (levelAdc < MIN_ADC_LEVEL) {
			color = counter;
		}
		else {color = levelAdc;}

		if (color > MAX_ADC_LEVEL) {color = MAX_ADC_LEVEL;}

		if ((color >= MIN_ADC_LEVEL) & (color < (COLOR_CHANGE_PART))) {
		// red=max, green++, blue=min
			red = MAX_ADC_LEVEL;
			green = color * 8;
			blue = 0;
		}
		if ((color >= (COLOR_CHANGE_PART)) & (color < (2 * COLOR_CHANGE_PART))) {
		// red--, green=max, blue=min
			red = (COLOR_CHANGE_PART - (color - COLOR_CHANGE_PART)) * 8;
			green = MAX_ADC_LEVEL;
			blue = 0;
		}
		if ((color >= (2 * COLOR_CHANGE_PART)) & (color < (3 * COLOR_CHANGE_PART))) {
		// red=min, green=max, blue++
			red = 0;
			green = MAX_ADC_LEVEL;
			blue = (color - (2 * COLOR_CHANGE_PART)) * 8;
		}
		if ((color >= (3 * COLOR_CHANGE_PART)) & (color < (4 * COLOR_CHANGE_PART))) {
			// red=min, green--, blue=max
			red = 0;
			green = (COLOR_CHANGE_PART - (color - (3 * COLOR_CHANGE_PART))) * 8;
			blue = MAX_ADC_LEVEL;
		}
		if ((color >= (4 * COLOR_CHANGE_PART)) & (color < (5 * COLOR_CHANGE_PART))) {
			// red++, green=min, blue=max
			red = (color - (4 * COLOR_CHANGE_PART)) * 8;
			green = 0;
			blue = MAX_ADC_LEVEL;
		}
		if ((color >= (5 * COLOR_CHANGE_PART)) & (color < (6 * COLOR_CHANGE_PART))) {
			// red=max, green=min, blue--
			red = MAX_ADC_LEVEL;
			green = 0;
			blue = (COLOR_CHANGE_PART - (color - (5 * COLOR_CHANGE_PART))) * 8;
		}

		if (color >= (6 * COLOR_CHANGE_PART)) {
		// red++, green++, blue++
			red = (color - 6 * COLOR_CHANGE_PART) * 4;
			green = (color - 6 * COLOR_CHANGE_PART) * 4;
			blue = (color - 6 * COLOR_CHANGE_PART) * 4;
		}

		TIM4->CCR1 = green;
		TIM4->CCR2 = red;
		TIM4->CCR3 = blue;
	}
}

// IRQ TIM3 20mS
void TIM3_IRQHandler(void) {
	counter++;	// 3000 * 20mS = 60 S
	if (counter >= (MAX_ADC_LEVEL - 2 * COLOR_CHANGE_PART)) {counter = 0;}
	TIM_ClearFlag(TIM3, TIM_FLAG_Update);
}