mirror of https://github.com/esphome/esphome.git
135 lines
4.5 KiB
C++
135 lines
4.5 KiB
C++
/**************************************************************************/
|
|
/*!
|
|
Author: Gustavo Ambrozio
|
|
Based on work by: Atsushi Sasaki (https://github.com/aselectroworks/Arduino-FT6336U)
|
|
*/
|
|
/**************************************************************************/
|
|
|
|
#include "ft63x6.h"
|
|
#include "esphome/core/log.h"
|
|
|
|
// Registers
|
|
// Reference: https://focuslcds.com/content/FT6236.pdf
|
|
namespace esphome {
|
|
namespace ft63x6 {
|
|
static const uint8_t FT6X36_ADDR_DEVICE_MODE = 0x00;
|
|
|
|
static const uint8_t FT63X6_ADDR_TD_STATUS = 0x02;
|
|
static const uint8_t FT63X6_ADDR_TOUCH1_STATE = 0x03;
|
|
static const uint8_t FT63X6_ADDR_TOUCH1_X = 0x03;
|
|
static const uint8_t FT63X6_ADDR_TOUCH1_ID = 0x05;
|
|
static const uint8_t FT63X6_ADDR_TOUCH1_Y = 0x05;
|
|
static const uint8_t FT63X6_ADDR_TOUCH1_WEIGHT = 0x07;
|
|
static const uint8_t FT63X6_ADDR_TOUCH1_MISC = 0x08;
|
|
static const uint8_t FT6X36_ADDR_THRESHHOLD = 0x80;
|
|
static const uint8_t FT6X36_ADDR_TOUCHRATE_ACTIVE = 0x88;
|
|
static const uint8_t FT63X6_ADDR_CHIP_ID = 0xA3;
|
|
|
|
static const char *const TAG = "FT63X6";
|
|
|
|
void FT63X6Touchscreen::setup() {
|
|
ESP_LOGCONFIG(TAG, "Setting up FT63X6 Touchscreen...");
|
|
if (this->interrupt_pin_ != nullptr) {
|
|
this->interrupt_pin_->pin_mode(gpio::FLAG_INPUT | gpio::FLAG_PULLUP);
|
|
this->interrupt_pin_->setup();
|
|
this->attach_interrupt_(this->interrupt_pin_, gpio::INTERRUPT_ANY_EDGE);
|
|
}
|
|
|
|
if (this->reset_pin_ != nullptr) {
|
|
this->reset_pin_->setup();
|
|
this->hard_reset_();
|
|
}
|
|
|
|
// Get touch resolution
|
|
if (this->x_raw_max_ == this->x_raw_min_) {
|
|
this->x_raw_max_ = 320;
|
|
}
|
|
if (this->y_raw_max_ == this->y_raw_min_) {
|
|
this->y_raw_max_ = 480;
|
|
}
|
|
uint8_t chip_id = this->read_byte_(FT63X6_ADDR_CHIP_ID);
|
|
if (chip_id != 0) {
|
|
ESP_LOGI(TAG, "FT6336U touch driver started chipid: %d", chip_id);
|
|
} else {
|
|
ESP_LOGE(TAG, "FT6336U touch driver failed to start");
|
|
}
|
|
this->write_byte(FT6X36_ADDR_DEVICE_MODE, 0x00);
|
|
this->write_byte(FT6X36_ADDR_THRESHHOLD, this->threshold_);
|
|
this->write_byte(FT6X36_ADDR_TOUCHRATE_ACTIVE, 0x0E);
|
|
}
|
|
|
|
void FT63X6Touchscreen::hard_reset_() {
|
|
if (this->reset_pin_ != nullptr) {
|
|
this->reset_pin_->digital_write(false);
|
|
delay(10);
|
|
this->reset_pin_->digital_write(true);
|
|
}
|
|
}
|
|
|
|
void FT63X6Touchscreen::dump_config() {
|
|
ESP_LOGCONFIG(TAG, "FT63X6 Touchscreen:");
|
|
LOG_I2C_DEVICE(this);
|
|
LOG_PIN(" Interrupt Pin: ", this->interrupt_pin_);
|
|
LOG_PIN(" Reset Pin: ", this->reset_pin_);
|
|
LOG_UPDATE_INTERVAL(this);
|
|
}
|
|
|
|
void FT63X6Touchscreen::update_touches() {
|
|
uint16_t touch_id, x, y;
|
|
|
|
uint8_t touches = this->read_touch_number_();
|
|
ESP_LOGV(TAG, "Touches found: %d", touches);
|
|
if ((touches == 0x00) || (touches == 0xff)) {
|
|
// ESP_LOGD(TAG, "No touches detected");
|
|
return;
|
|
}
|
|
|
|
for (auto point = 0; point < touches; point++) {
|
|
if (((this->read_touch_event_(point)) & 0x01) == 0) { // checking event flag bit 6 if it is null
|
|
touch_id = this->read_touch_id_(point); // id1 = 0 or 1
|
|
x = this->read_touch_x_(point);
|
|
y = this->read_touch_y_(point);
|
|
if ((x == 0) && (y == 0)) {
|
|
ESP_LOGW(TAG, "Reporting a (0,0) touch on %d", touch_id);
|
|
}
|
|
this->add_raw_touch_position_(touch_id, x, y, this->read_touch_weight_(point));
|
|
}
|
|
}
|
|
}
|
|
|
|
uint8_t FT63X6Touchscreen::read_touch_number_() { return this->read_byte_(FT63X6_ADDR_TD_STATUS) & 0x0F; }
|
|
// Touch 1 functions
|
|
uint16_t FT63X6Touchscreen::read_touch_x_(uint8_t touch) {
|
|
uint8_t read_buf[2];
|
|
read_buf[0] = this->read_byte_(FT63X6_ADDR_TOUCH1_X + (touch * 6));
|
|
read_buf[1] = this->read_byte_(FT63X6_ADDR_TOUCH1_X + 1 + (touch * 6));
|
|
return ((read_buf[0] & 0x0f) << 8) | read_buf[1];
|
|
}
|
|
uint16_t FT63X6Touchscreen::read_touch_y_(uint8_t touch) {
|
|
uint8_t read_buf[2];
|
|
read_buf[0] = this->read_byte_(FT63X6_ADDR_TOUCH1_Y + (touch * 6));
|
|
read_buf[1] = this->read_byte_(FT63X6_ADDR_TOUCH1_Y + 1 + (touch * 6));
|
|
return ((read_buf[0] & 0x0f) << 8) | read_buf[1];
|
|
}
|
|
uint8_t FT63X6Touchscreen::read_touch_event_(uint8_t touch) {
|
|
return this->read_byte_(FT63X6_ADDR_TOUCH1_X + (touch * 6)) >> 6;
|
|
}
|
|
uint8_t FT63X6Touchscreen::read_touch_id_(uint8_t touch) {
|
|
return this->read_byte_(FT63X6_ADDR_TOUCH1_ID + (touch * 6)) >> 4;
|
|
}
|
|
uint8_t FT63X6Touchscreen::read_touch_weight_(uint8_t touch) {
|
|
return this->read_byte_(FT63X6_ADDR_TOUCH1_WEIGHT + (touch * 6));
|
|
}
|
|
uint8_t FT63X6Touchscreen::read_touch_misc_(uint8_t touch) {
|
|
return this->read_byte_(FT63X6_ADDR_TOUCH1_MISC + (touch * 6)) >> 4;
|
|
}
|
|
|
|
uint8_t FT63X6Touchscreen::read_byte_(uint8_t addr) {
|
|
uint8_t byte = 0;
|
|
this->read_byte(addr, &byte);
|
|
return byte;
|
|
}
|
|
|
|
} // namespace ft63x6
|
|
} // namespace esphome
|