125 lines
3.4 KiB
C++
125 lines
3.4 KiB
C++
#pragma once
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#include "esphome/components/i2c/i2c.h"
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#include "esphome/components/touchscreen/touchscreen.h"
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#include "esphome/core/component.h"
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#include "esphome/core/hal.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace ft5x06 {
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static const char *const TAG = "ft5x06.touchscreen";
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enum VendorId {
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FT5X06_ID_UNKNOWN = 0,
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FT5X06_ID_1 = 0x51,
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FT5X06_ID_2 = 0x11,
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FT5X06_ID_3 = 0xCD,
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};
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enum FTCmd : uint8_t {
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FT5X06_MODE_REG = 0x00,
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FT5X06_ORIGIN_REG = 0x08,
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FT5X06_RESOLUTION_REG = 0x0C,
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FT5X06_VENDOR_ID_REG = 0xA8,
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FT5X06_TD_STATUS = 0x02,
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FT5X06_TOUCH_DATA = 0x03,
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FT5X06_I_MODE = 0xA4,
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FT5X06_TOUCH_MAX = 0x4C,
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};
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enum FTMode : uint8_t {
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FT5X06_OP_MODE = 0,
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FT5X06_SYSINFO_MODE = 0x10,
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FT5X06_TEST_MODE = 0x40,
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};
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static const size_t MAX_TOUCHES = 5; // max number of possible touches reported
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class FT5x06Touchscreen : public touchscreen::Touchscreen, public i2c::I2CDevice {
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public:
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void setup() override {
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esph_log_config(TAG, "Setting up FT5x06 Touchscreen...");
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// wait 200ms after reset.
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this->set_timeout(200, [this] { this->continue_setup_(); });
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}
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void continue_setup_(void) {
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uint8_t data[4];
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if (!this->set_mode_(FT5X06_OP_MODE))
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return;
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if (!this->err_check_(this->read_register(FT5X06_VENDOR_ID_REG, data, 1), "Read Vendor ID"))
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return;
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switch (data[0]) {
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case FT5X06_ID_1:
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case FT5X06_ID_2:
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case FT5X06_ID_3:
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this->vendor_id_ = (VendorId) data[0];
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esph_log_d(TAG, "Read vendor ID 0x%X", data[0]);
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break;
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default:
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esph_log_e(TAG, "Unknown vendor ID 0x%X", data[0]);
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this->mark_failed();
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return;
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}
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// reading the chip registers to get max x/y does not seem to work.
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this->x_raw_max_ = this->display_->get_width();
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this->y_raw_max_ = this->display_->get_height();
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esph_log_config(TAG, "FT5x06 Touchscreen setup complete");
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}
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void update_touches() override {
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uint8_t touch_cnt;
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uint8_t data[MAX_TOUCHES][6];
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if (!this->read_byte(FT5X06_TD_STATUS, &touch_cnt) || touch_cnt > MAX_TOUCHES) {
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esph_log_w(TAG, "Failed to read status");
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return;
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}
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if (touch_cnt == 0)
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return;
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if (!this->read_bytes(FT5X06_TOUCH_DATA, (uint8_t *) data, touch_cnt * 6)) {
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esph_log_w(TAG, "Failed to read touch data");
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return;
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}
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for (uint8_t i = 0; i != touch_cnt; i++) {
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uint8_t status = data[i][0] >> 6;
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uint8_t id = data[i][2] >> 3;
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uint16_t x = encode_uint16(data[i][0] & 0x0F, data[i][1]);
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uint16_t y = encode_uint16(data[i][2] & 0xF, data[i][3]);
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esph_log_d(TAG, "Read %X status, id: %d, pos %d/%d", status, id, x, y);
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if (status == 0 || status == 2) {
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this->add_raw_touch_position_(id, x, y);
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}
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}
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}
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void dump_config() override {
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esph_log_config(TAG, "FT5x06 Touchscreen:");
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esph_log_config(TAG, " Address: 0x%02X", this->address_);
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esph_log_config(TAG, " Vendor ID: 0x%X", (int) this->vendor_id_);
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}
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protected:
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bool err_check_(i2c::ErrorCode err, const char *msg) {
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if (err != i2c::ERROR_OK) {
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this->mark_failed();
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esph_log_e(TAG, "%s failed - err 0x%X", msg, err);
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return false;
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}
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return true;
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}
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bool set_mode_(FTMode mode) {
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return this->err_check_(this->write_register(FT5X06_MODE_REG, (uint8_t *) &mode, 1), "Set mode");
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}
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VendorId vendor_id_{FT5X06_ID_UNKNOWN};
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};
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} // namespace ft5x06
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} // namespace esphome
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