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Fixed touch release issue using the interrupt pin (#3925)

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Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
This commit is contained in:
NP v/d Spek 2022-10-25 20:33:18 +02:00 committed by Jesse Hills
parent ca09693efa
commit 0220934e4c
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GPG key ID: BEAAE804EFD8E83A
2 changed files with 76 additions and 85 deletions
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159
esphome/components/xpt2046/xpt2046.cpp
View file

@ -20,8 +20,6 @@ void XPT2046Component::setup() {
this->irq_pin_->setup(); // INPUT
this->irq_pin_->pin_mode(gpio::FLAG_INPUT | gpio::FLAG_PULLUP);
this->irq_pin_->setup();
this->store_.pin = this->irq_pin_->to_isr();
this->irq_pin_->attach_interrupt(XPT2046TouchscreenStore::gpio_intr, &this->store_, gpio::INTERRUPT_FALLING_EDGE);
}
spi_setup();
@ -29,10 +27,10 @@ void XPT2046Component::setup() {
}
void XPT2046Component::loop() {
if ((this->irq_pin_ == nullptr) || (!this->store_.touch))
return;
this->store_.touch = false;
check_touch_();
if ((this->irq_pin_ != nullptr) && (this->store_.touch || this->touched)) {
this->store_.touch = false;
check_touch_();
}
}
void XPT2046Component::update() {
@ -45,94 +43,88 @@ void XPT2046Component::check_touch_() {
bool touch = false;
uint32_t now = millis();
this->z_raw = 0;
enable();
// In case the penirq pin is present only do the SPI transaction if it reports a touch (is low).
// The touch has to be also confirmed with checking the pressure over threshold
if ((this->irq_pin_ == nullptr) || !this->irq_pin_->digital_read()) {
enable();
int16_t touch_pressure_1 = read_adc_(0xB1 /* touch_pressure_1 */);
int16_t touch_pressure_2 = read_adc_(0xC1 /* touch_pressure_2 */);
int16_t touch_pressure_1 = read_adc_(0xB1 /* touch_pressure_1 */);
int16_t touch_pressure_2 = read_adc_(0xC1 /* touch_pressure_2 */);
this->z_raw = touch_pressure_1 + 0Xfff - touch_pressure_2;
this->z_raw = touch_pressure_1 + 4095 - touch_pressure_2;
touch = (this->z_raw >= this->threshold_);
if (touch) {
read_adc_(0xD1 /* X */); // dummy Y measure, 1st is always noisy
data[0] = read_adc_(0x91 /* Y */);
data[1] = read_adc_(0xD1 /* X */); // make 3 x-y measurements
data[2] = read_adc_(0x91 /* Y */);
data[3] = read_adc_(0xD1 /* X */);
data[4] = read_adc_(0x91 /* Y */);
}
touch = (this->z_raw >= this->threshold_);
if (touch) {
read_adc_(0x91 /* Y */); // dummy Y measure, 1st is always noisy
data[0] = read_adc_(0xD1 /* X */);
data[1] = read_adc_(0x91 /* Y */); // make 3 x-y measurements
data[2] = read_adc_(0xD1 /* X */);
data[3] = read_adc_(0x91 /* Y */);
data[4] = read_adc_(0xD1 /* X */);
data[5] = read_adc_(0xD0 /* X */); // Last X touch power down
disable();
if (touch) {
this->x_raw = best_two_avg(data[1], data[3], data[5]);
this->y_raw = best_two_avg(data[0], data[2], data[4]);
ESP_LOGVV(TAG, "Update [x, y] = [%d, %d], z = %d", this->x_raw, this->y_raw, this->z_raw);
TouchPoint touchpoint;
touchpoint.x = normalize(this->x_raw, this->x_raw_min_, this->x_raw_max_);
touchpoint.y = normalize(this->y_raw, this->y_raw_min_, this->y_raw_max_);
if (this->swap_x_y_) {
std::swap(touchpoint.x, touchpoint.y);
}
data[5] = read_adc_(0x90 /* Y */); // Last Y touch power down
if (this->invert_x_) {
touchpoint.x = 0xfff - touchpoint.x;
}
disable();
if (this->invert_y_) {
touchpoint.y = 0xfff - touchpoint.y;
}
if (touch) {
this->x_raw = best_two_avg(data[0], data[2], data[4]);
this->y_raw = best_two_avg(data[1], data[3], data[5]);
ESP_LOGVV(TAG, "Update [x, y] = [%d, %d], z = %d", this->x_raw, this->y_raw, this->z_raw);
TouchPoint touchpoint;
touchpoint.x = normalize(this->x_raw, this->x_raw_min_, this->x_raw_max_);
touchpoint.y = normalize(this->y_raw, this->y_raw_min_, this->y_raw_max_);
if (this->swap_x_y_) {
switch (static_cast<TouchRotation>(this->display_->get_rotation())) {
case ROTATE_0_DEGREES:
break;
case ROTATE_90_DEGREES:
std::swap(touchpoint.x, touchpoint.y);
}
if (this->invert_x_) {
touchpoint.x = 0xfff - touchpoint.x;
}
if (this->invert_y_) {
touchpoint.y = 0xfff - touchpoint.y;
}
switch (static_cast<TouchRotation>(this->display_->get_rotation())) {
case ROTATE_0_DEGREES:
break;
case ROTATE_90_DEGREES:
std::swap(touchpoint.x, touchpoint.y);
touchpoint.y = 0xfff - touchpoint.y;
break;
case ROTATE_180_DEGREES:
touchpoint.x = 0xfff - touchpoint.x;
touchpoint.y = 0xfff - touchpoint.y;
break;
case ROTATE_270_DEGREES:
std::swap(touchpoint.x, touchpoint.y);
touchpoint.x = 0xfff - touchpoint.x;
break;
}
touchpoint.x = (int16_t)((int) touchpoint.x * this->display_->get_width() / 0xfff);
touchpoint.y = (int16_t)((int) touchpoint.y * this->display_->get_height() / 0xfff);
if (!this->touched || (now - this->last_pos_ms_) >= this->report_millis_) {
ESP_LOGV(TAG, "Touching at [%03X, %03X] => [%3d, %3d]", this->x_raw, this->y_raw, touchpoint.x, touchpoint.y);
this->defer([this, touchpoint]() { this->send_touch_(touchpoint); });
this->x = touchpoint.x;
this->y = touchpoint.y;
this->touched = true;
this->last_pos_ms_ = now;
}
} else {
this->x_raw = this->y_raw = 0;
if (this->touched) {
ESP_LOGV(TAG, "Released [%d, %d]", this->x, this->y);
this->touched = false;
for (auto *listener : this->touch_listeners_)
listener->release();
}
break;
case ROTATE_180_DEGREES:
touchpoint.x = 0xfff - touchpoint.x;
touchpoint.y = 0xfff - touchpoint.y;
break;
case ROTATE_270_DEGREES:
std::swap(touchpoint.x, touchpoint.y);
touchpoint.x = 0xfff - touchpoint.x;
break;
}
touchpoint.x = (int16_t)((int) touchpoint.x * this->display_->get_width() / 0xfff);
touchpoint.y = (int16_t)((int) touchpoint.y * this->display_->get_height() / 0xfff);
if (!this->touched || (now - this->last_pos_ms_) >= this->report_millis_) {
ESP_LOGV(TAG, "Touching at [%03X, %03X] => [%3d, %3d]", this->x_raw, this->y_raw, touchpoint.x, touchpoint.y);
this->defer([this, touchpoint]() { this->send_touch_(touchpoint); });
this->x = touchpoint.x;
this->y = touchpoint.y;
this->touched = true;
this->last_pos_ms_ = now;
}
}
if (!touch && this->touched) {
this->x_raw = this->y_raw = this->z_raw = 0;
ESP_LOGV(TAG, "Released [%d, %d]", this->x, this->y);
this->touched = false;
for (auto *listener : this->touch_listeners_)
listener->release();
}
}
@ -203,6 +195,7 @@ int16_t XPT2046Component::read_adc_(uint8_t ctrl) { // NOLINT
uint8_t data[2];
write_byte(ctrl);
delay(1);
data[0] = read_byte();
data[1] = read_byte();

2
esphome/components/xpt2046/xpt2046.h
View file

@ -14,8 +14,6 @@ using namespace touchscreen;
struct XPT2046TouchscreenStore {
volatile bool touch;
ISRInternalGPIOPin pin;
static void gpio_intr(XPT2046TouchscreenStore *store);
};