C++ (Cpp) rotary_encoder_report_event示例

示例#1

文件： rotary_encoder.c 项目： 168519/linux

static irqreturn_t rotary_encoder_irq(int irq, void *dev_id)
{
	struct rotary_encoder *encoder = dev_id;
	int state;

	state = rotary_encoder_get_state(encoder->pdata);

	switch (state) {
	case 0x0:
		if (encoder->armed) {
			rotary_encoder_report_event(encoder);
			encoder->armed = false;
		}
		break;

	case 0x1:
	case 0x2:
		if (encoder->armed)
			encoder->dir = state - 1;
		break;

	case 0x3:
		encoder->armed = true;
		break;
	}

	return IRQ_HANDLED;
}

示例#2

文件： rotary_encoder.c 项目： Lyude/linux

static irqreturn_t rotary_encoder_irq(int irq, void *dev_id)
{
	struct rotary_encoder *encoder = dev_id;
	unsigned int state;

	mutex_lock(&encoder->access_mutex);

	state = rotary_encoder_get_state(encoder);

	switch (state) {
	case 0x0:
		if (encoder->armed) {
			rotary_encoder_report_event(encoder);
			encoder->armed = false;
		}
		break;

	case 0x1:
	case 0x3:
		if (encoder->armed)
			encoder->dir = 2 - state;
		break;

	case 0x2:
		encoder->armed = true;
		break;
	}

	mutex_unlock(&encoder->access_mutex);

	return IRQ_HANDLED;
}

示例#3

文件： rotary_encoder.c 项目： Lyude/linux

static irqreturn_t rotary_encoder_half_period_irq(int irq, void *dev_id)
{
	struct rotary_encoder *encoder = dev_id;
	unsigned int state;

	mutex_lock(&encoder->access_mutex);

	state = rotary_encoder_get_state(encoder);

	if (state & 1) {
		encoder->dir = ((encoder->last_stable - state + 1) % 4) - 1;
	} else {
		if (state != encoder->last_stable) {
			rotary_encoder_report_event(encoder);
			encoder->last_stable = state;
		}
	}

	mutex_unlock(&encoder->access_mutex);

	return IRQ_HANDLED;
}

示例#4

文件： rotary_encoder.c 项目： 168519/linux

static irqreturn_t rotary_encoder_half_period_irq(int irq, void *dev_id)
{
	struct rotary_encoder *encoder = dev_id;
	int state;

	state = rotary_encoder_get_state(encoder->pdata);

	switch (state) {
	case 0x00:
	case 0x03:
		if (state != encoder->last_stable) {
			rotary_encoder_report_event(encoder);
			encoder->last_stable = state;
		}
		break;

	case 0x01:
	case 0x02:
		encoder->dir = (encoder->last_stable + state) & 0x01;
		break;
	}

	return IRQ_HANDLED;
}

示例#5

文件： rotary_encoder.c 项目： Lyude/linux

static irqreturn_t rotary_encoder_quarter_period_irq(int irq, void *dev_id)
{
	struct rotary_encoder *encoder = dev_id;
	unsigned int state;

	mutex_lock(&encoder->access_mutex);

	state = rotary_encoder_get_state(encoder);

	if ((encoder->last_stable + 1) % 4 == state)
		encoder->dir = 1;
	else if (encoder->last_stable == (state + 1) % 4)
		encoder->dir = -1;
	else
		goto out;

	rotary_encoder_report_event(encoder);

out:
	encoder->last_stable = state;
	mutex_unlock(&encoder->access_mutex);

	return IRQ_HANDLED;
}