2023-12-12 23:56:01 +01:00
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/**************************************************************************/
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/*!
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Author: Gustavo Ambrozio
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Based on work by: Atsushi Sasaki (https://github.com/aselectroworks/Arduino-FT6336U)
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*/
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/**************************************************************************/
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#include "ft63x6.h"
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#include "esphome/core/log.h"
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// Registers
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// Reference: https://focuslcds.com/content/FT6236.pdf
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namespace esphome {
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namespace ft63x6 {
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static const uint8_t FT63X6_ADDR_TOUCH_COUNT = 0x02;
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static const uint8_t FT63X6_ADDR_TOUCH1_ID = 0x05;
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static const uint8_t FT63X6_ADDR_TOUCH1_X = 0x03;
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static const uint8_t FT63X6_ADDR_TOUCH1_Y = 0x05;
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static const uint8_t FT63X6_ADDR_TOUCH2_ID = 0x0B;
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static const uint8_t FT63X6_ADDR_TOUCH2_X = 0x09;
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static const uint8_t FT63X6_ADDR_TOUCH2_Y = 0x0B;
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static const char *const TAG = "FT63X6Touchscreen";
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void FT63X6Touchscreen::setup() {
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ESP_LOGCONFIG(TAG, "Setting up FT63X6Touchscreen Touchscreen...");
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if (this->interrupt_pin_ != nullptr) {
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this->interrupt_pin_->pin_mode(gpio::FLAG_INPUT | gpio::FLAG_PULLUP);
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this->interrupt_pin_->setup();
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this->attach_interrupt_(this->interrupt_pin_, gpio::INTERRUPT_FALLING_EDGE);
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}
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if (this->reset_pin_ != nullptr) {
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this->reset_pin_->setup();
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}
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this->hard_reset_();
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// Get touch resolution
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this->x_raw_max_ = 320;
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this->y_raw_max_ = 480;
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}
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void FT63X6Touchscreen::update_touches() {
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int touch_count = this->read_touch_count_();
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if (touch_count == 0) {
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return;
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}
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uint8_t touch_id = this->read_touch_id_(FT63X6_ADDR_TOUCH1_ID); // id1 = 0 or 1
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int16_t x = this->read_touch_coordinate_(FT63X6_ADDR_TOUCH1_X);
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int16_t y = this->read_touch_coordinate_(FT63X6_ADDR_TOUCH1_Y);
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2023-12-18 20:23:22 +01:00
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this->add_raw_touch_position_(touch_id, x, y);
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2023-12-12 23:56:01 +01:00
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if (touch_count >= 2) {
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touch_id = this->read_touch_id_(FT63X6_ADDR_TOUCH2_ID); // id2 = 0 or 1(~id1 & 0x01)
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x = this->read_touch_coordinate_(FT63X6_ADDR_TOUCH2_X);
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y = this->read_touch_coordinate_(FT63X6_ADDR_TOUCH2_Y);
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2023-12-18 20:23:22 +01:00
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this->add_raw_touch_position_(touch_id, x, y);
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2023-12-12 23:56:01 +01:00
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}
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}
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void FT63X6Touchscreen::hard_reset_() {
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if (this->reset_pin_ != nullptr) {
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this->reset_pin_->digital_write(false);
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delay(10);
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this->reset_pin_->digital_write(true);
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}
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}
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void FT63X6Touchscreen::dump_config() {
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ESP_LOGCONFIG(TAG, "FT63X6 Touchscreen:");
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LOG_I2C_DEVICE(this);
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LOG_PIN(" Interrupt Pin: ", this->interrupt_pin_);
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LOG_PIN(" Reset Pin: ", this->reset_pin_);
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}
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uint8_t FT63X6Touchscreen::read_touch_count_() { return this->read_byte_(FT63X6_ADDR_TOUCH_COUNT); }
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// Touch functions
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uint16_t FT63X6Touchscreen::read_touch_coordinate_(uint8_t coordinate) {
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uint8_t read_buf[2];
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read_buf[0] = this->read_byte_(coordinate);
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read_buf[1] = this->read_byte_(coordinate + 1);
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return ((read_buf[0] & 0x0f) << 8) | read_buf[1];
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}
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uint8_t FT63X6Touchscreen::read_touch_id_(uint8_t id_address) { return this->read_byte_(id_address) >> 4; }
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uint8_t FT63X6Touchscreen::read_byte_(uint8_t addr) {
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uint8_t byte = 0;
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this->read_byte(addr, &byte);
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return byte;
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}
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} // namespace ft63x6
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} // namespace esphome
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