93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
#include "Gt911Touch.h"
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#include <Tactility/Log.h>
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#include <Tactility/hal/i2c/I2c.h>
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#include <esp_lcd_touch_gt911.h>
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#include <esp_err.h>
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#include <esp_lvgl_port.h>
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#define TAG "GT911"
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bool Gt911Touch::start(lv_display_t* display) {
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esp_lcd_panel_io_i2c_config_t io_config = ESP_LCD_TOUCH_IO_I2C_GT911_CONFIG();
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/**
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* When the interrupt pin is low, the address is 0x5D. Otherwise it is 0x14.
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* There is not reset pin, and the current driver fails when you only specify the interrupt pin.
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* Because of that, we don't use the interrupt pin and we'll simply scan the bus instead:
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*/
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if (tt::hal::i2c::masterHasDeviceAtAddress(configuration->port, ESP_LCD_TOUCH_IO_I2C_GT911_ADDRESS)) {
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io_config.dev_addr = ESP_LCD_TOUCH_IO_I2C_GT911_ADDRESS;
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} else if (tt::hal::i2c::masterHasDeviceAtAddress(configuration->port, ESP_LCD_TOUCH_IO_I2C_GT911_ADDRESS_BACKUP)) {
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io_config.dev_addr = ESP_LCD_TOUCH_IO_I2C_GT911_ADDRESS_BACKUP;
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} else {
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TT_LOG_E(TAG, "No device found on I2C bus");
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return false;
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}
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if (esp_lcd_new_panel_io_i2c(configuration->port, &io_config, &ioHandle) != ESP_OK) {
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TT_LOG_E(TAG, "Touch IO I2C creation failed");
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return false;
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}
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esp_lcd_touch_config_t config = {
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.x_max = configuration->xMax,
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.y_max = configuration->yMax,
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.rst_gpio_num = configuration->pinReset,
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.int_gpio_num = configuration->pinInterrupt,
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.levels = {
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.reset = configuration->pinResetLevel,
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.interrupt = configuration->pinInterruptLevel,
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},
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.flags = {
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.swap_xy = configuration->swapXy,
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.mirror_x = configuration->mirrorX,
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.mirror_y = configuration->mirrorY,
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},
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.process_coordinates = nullptr,
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.interrupt_callback = nullptr,
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.user_data = nullptr,
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.driver_data = nullptr
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};
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if (esp_lcd_touch_new_i2c_gt911(ioHandle, &config, &touchHandle) != ESP_OK) {
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TT_LOG_E(TAG, "Driver init failed");
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cleanup();
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return false;
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}
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const lvgl_port_touch_cfg_t touch_cfg = {
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.disp = display,
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.handle = touchHandle,
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};
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TT_LOG_I(TAG, "Adding touch to LVGL");
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deviceHandle = lvgl_port_add_touch(&touch_cfg);
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if (deviceHandle == nullptr) {
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TT_LOG_E(TAG, "Adding touch failed");
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cleanup();
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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 Gt911Touch::stop() {
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cleanup();
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return true;
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}
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void Gt911Touch::cleanup() {
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if (deviceHandle != nullptr) {
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lv_indev_delete(deviceHandle);
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deviceHandle = nullptr;
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touchHandle = nullptr;
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}
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if (ioHandle != nullptr) {
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esp_lcd_panel_io_del(ioHandle);
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ioHandle = nullptr;
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}
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}
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