Fix mouse coordinates, sequence BLE discovery/encryption, and prevent mouse from disabling on-screen keyboard
This commit is contained in:
Adolfo Reyna
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b581c2abc643da397b98d269bb63a6fed8f7efa94df054b00d3e333c387ddb78
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{"version":"1.0","algorithm":"sha256","created_at":"2025-11-29T02:16:24.972824+00:00","files":[{"path":"CMakeLists.txt","size":115,"hash":"ddcc34d3ac2ee5238581367fc4fd5d564d568f224dc47bc7718424c96775bc57"},{"path":"README.md","size":2415,"hash":"589710be7e62dac281b4bbc1261615b77a8e8247ac7e80af867ef772508b7f5f"},{"path":"esp_lcd_touch_ft6x36.c","size":12037,"hash":"42ec067b1ebb135f75ab8eb9a73b557037e72e39a62047117353d9b00e98d369"},{"path":"idf_component.yml","size":409,"hash":"2f7bf7b2b3218704fbc383c445a162c3bf62b39eede92de824b2fec9992e5cec"},{"path":"license.txt","size":11560,"hash":"3ddf9be5c28fe27dad143a5dc76eea25222ad1dd68934a047064e56ed2fa40c5"},{"path":"include/esp_lcd_touch_ft6x36.h","size":1698,"hash":"d5c5c521ccf4784cf3aca293ff671c55786565ee9301532bb887adac4129160a"}]}
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idf_component_register(
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SRCS "esp_lcd_touch_ft6x36.c"
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INCLUDE_DIRS "include"
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REQUIRES "esp_lcd"
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)
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# ESP LCD Touch FT6x36 Controller
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[](https://components.espressif.com/components/lambage/esp_lcd_touch_ft6x36)
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This repository is forked from https://github.com/cfscn/esp_lcd_touch_ft6x36
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Implementation of the FT6x36 touch controller with esp_lcd_touch component.
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| Touch controller | Communication interface | Component name | Link to datasheet |
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| :--------------: | :---------------------: | :------------: | :---------------: |
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| FT6x36 | I2C | esp_lcd_touch_ft6x36 | [PDF](https://www.buydisplay.com/download/ic/FT6236-FT6336-FT6436L-FT6436_Datasheet.pdf) |
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[^1]: **NOTE:** This controller should work via I2C or SPI communication interface. But it was tested on HW only via I2C communication interface.
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## Add to project
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Packages from this repository are uploaded to [Espressif's component service](https://components.espressif.com/).
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You can add them to your project via `idf.py add-dependancy`, e.g.
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```
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idf.py add-dependency esp_lcd_touch_ft6x36==1.0.0
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```
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Alternatively, you can create `idf_component.yml`. More is in [Espressif's documentation](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/tools/idf-component-manager.html).
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## Example use
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I2C initialization of the touch component.
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```
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esp_lcd_panel_io_i2c_config_t io_config = ESP_LCD_TOUCH_IO_I2C_FT6x36_CONFIG();
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esp_lcd_touch_config_t tp_cfg = {
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.x_max = CONFIG_LCD_HRES,
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.y_max = CONFIG_LCD_VRES,
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.rst_gpio_num = -1,
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.int_gpio_num = -1,
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.levels = {
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.reset = 0,
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.interrupt = 0,
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},
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.flags = {
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.swap_xy = 0,
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.mirror_x = 0,
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.mirror_y = 0,
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},
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};
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esp_lcd_touch_handle_t tp;
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esp_lcd_touch_new_i2c_ft6x36(io_handle, &tp_cfg, &tp);
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```
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Read data from the touch controller and store it in RAM memory. It should be called regularly in poll.
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```
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esp_lcd_touch_read_data(tp);
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```
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Get one X and Y coordinates with strength of touch.
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```
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uint16_t touch_x[1];
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uint16_t touch_y[1];
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uint16_t touch_strength[1];
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uint8_t touch_cnt = 0;
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bool touchpad_pressed = esp_lcd_touch_get_coordinates(tp, touch_x, touch_y, touch_strength, &touch_cnt, 1);
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```
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/*
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* SPDX-FileCopyrightText: 2025 CFSoft Systems (Chengdu) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdio.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_system.h"
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#include "esp_err.h"
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#include "esp_log.h"
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#include "esp_check.h"
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#include "driver/gpio.h"
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#include "esp_lcd_panel_io.h"
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#include "esp_lcd_touch.h"
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static const char *TAG = "FT6x36";
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/* Registers */
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#define FT62XX_G_FT5201ID 0xA8 // FocalTech's panel ID
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#define FT62XX_REG_NUMTOUCHES 0x02 // Number of touch points
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#define FT62XX_NUM_X 0x33 // Touch X position
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#define FT62XX_NUM_Y 0x34 // Touch Y position
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#define FT62XX_REG_MODE 0x00 // Device mode, either WORKING or FACTORY
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#define FT62XX_REG_READDATA 0x00 // Read data from register
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#define FT62XX_REG_CALIBRATE 0x02 // Calibrate mode
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#define FT62XX_REG_WORKMODE 0x00 // Work mode
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#define FT62XX_REG_FACTORYMODE 0x40 // Factory mode
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#define FT62XX_REG_THRESHHOLD 0x80 // Threshold for touch detection
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#define FT62XX_REG_POINTRATE 0x88 // Point rate
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#define FT62XX_REG_FIRMVERS 0xA6 // Firmware version
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#define FT62XX_REG_CHIPID 0xA3 // Chip selecting
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#define FT62XX_REG_VENDID 0xA8 // FocalTech's panel ID
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#define FT62XX_VENDID 0x11 // FocalTech's panel ID
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#define FT6336_VENDID 0x88 // FocalTech's panel ID
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#define FT6206_CHIPID 0x06 // Chip selecting
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#define FT3236_CHIPID 0x33 // Chip selecting
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#define FT6236_CHIPID 0x36 // Chip selecting
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#define FT6236U_CHIPID 0x64 // Chip selecting
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#define FT6336U_CHIPID 0x64 // Chip selecting
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#define FT62XX_DEFAULT_THRESHOLD 128 // Default threshold for touch detection
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/*******************************************************************************
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* Function definitions
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*******************************************************************************/
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static esp_err_t esp_lcd_touch_ft6x36_read_data(esp_lcd_touch_handle_t tp);
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static bool esp_lcd_touch_ft6x36_get_xy(esp_lcd_touch_handle_t tp, uint16_t *x, uint16_t *y, uint16_t *strength, uint8_t *point_num, uint8_t max_point_num);
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static esp_err_t esp_lcd_touch_ft6x36_del(esp_lcd_touch_handle_t tp);
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/* I2C read */
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static esp_err_t touch_ft6x36_i2c_write(esp_lcd_touch_handle_t tp, uint8_t reg, uint8_t data);
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static esp_err_t touch_ft6x36_i2c_read(esp_lcd_touch_handle_t tp, uint8_t reg, uint8_t *data, uint8_t len);
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/* FT6x36 init */
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static esp_err_t touch_ft6x36_init(esp_lcd_touch_handle_t tp);
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/* FT6x36 reset */
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static esp_err_t touch_ft6x36_reset(esp_lcd_touch_handle_t tp);
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/*******************************************************************************
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* Public API functions
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*******************************************************************************/
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esp_err_t esp_lcd_touch_new_i2c_ft6x36(const esp_lcd_panel_io_handle_t io, const esp_lcd_touch_config_t *config, esp_lcd_touch_handle_t *out_touch)
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{
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esp_err_t ret = ESP_OK;
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assert(config != NULL);
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assert(out_touch != NULL);
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/* Prepare main structure */
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esp_lcd_touch_handle_t esp_lcd_touch_ft6x36 = heap_caps_calloc(1, sizeof(esp_lcd_touch_t), MALLOC_CAP_DEFAULT);
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ESP_GOTO_ON_FALSE(esp_lcd_touch_ft6x36, ESP_ERR_NO_MEM, err, TAG, "no mem for FT6x36 controller");
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/* Communication interface */
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esp_lcd_touch_ft6x36->io = io;
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/* Only supported callbacks are set */
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esp_lcd_touch_ft6x36->read_data = esp_lcd_touch_ft6x36_read_data;
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esp_lcd_touch_ft6x36->get_xy = esp_lcd_touch_ft6x36_get_xy;
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esp_lcd_touch_ft6x36->del = esp_lcd_touch_ft6x36_del;
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/* Mutex */
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esp_lcd_touch_ft6x36->data.lock.owner = portMUX_FREE_VAL;
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/* Save config */
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memcpy(&esp_lcd_touch_ft6x36->config, config, sizeof(esp_lcd_touch_config_t));
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/* Prepare pin for touch interrupt */
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if (esp_lcd_touch_ft6x36->config.int_gpio_num != GPIO_NUM_NC)
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{
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const gpio_config_t int_gpio_config = {
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.mode = GPIO_MODE_INPUT,
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.intr_type = (esp_lcd_touch_ft6x36->config.levels.interrupt ? GPIO_INTR_POSEDGE : GPIO_INTR_NEGEDGE),
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.pin_bit_mask = BIT64(esp_lcd_touch_ft6x36->config.int_gpio_num)};
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ret = gpio_config(&int_gpio_config);
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ESP_GOTO_ON_ERROR(ret, err, TAG, "GPIO config failed");
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/* Register interrupt callback */
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if (esp_lcd_touch_ft6x36->config.interrupt_callback)
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{
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esp_lcd_touch_register_interrupt_callback(esp_lcd_touch_ft6x36, esp_lcd_touch_ft6x36->config.interrupt_callback);
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}
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}
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/* Prepare pin for touch controller reset */
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if (esp_lcd_touch_ft6x36->config.rst_gpio_num != GPIO_NUM_NC)
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{
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const gpio_config_t rst_gpio_config = {
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.mode = GPIO_MODE_OUTPUT,
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.pin_bit_mask = BIT64(esp_lcd_touch_ft6x36->config.rst_gpio_num)};
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ret = gpio_config(&rst_gpio_config);
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ESP_GOTO_ON_ERROR(ret, err, TAG, "GPIO config failed");
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}
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/* Reset controller */
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ret = touch_ft6x36_reset(esp_lcd_touch_ft6x36);
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ESP_GOTO_ON_ERROR(ret, err, TAG, "FT6x36 reset failed");
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/* Init controller */
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ret = touch_ft6x36_init(esp_lcd_touch_ft6x36);
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ESP_GOTO_ON_ERROR(ret, err, TAG, "FT6x36 init failed");
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*out_touch = esp_lcd_touch_ft6x36;
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err:
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if (ret != ESP_OK)
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{
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ESP_LOGE(TAG, "Error (0x%x)! Touch controller FT6x36 initialization failed!", ret);
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if (esp_lcd_touch_ft6x36)
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{
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esp_lcd_touch_ft6x36_del(esp_lcd_touch_ft6x36);
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}
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}
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return ret;
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}
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static esp_err_t esp_lcd_touch_ft6x36_read_data(esp_lcd_touch_handle_t tp)
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{
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esp_err_t err;
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uint8_t data[16];
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uint8_t points, touches;
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size_t i = 0;
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assert(tp != NULL);
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/* Read number of touched points */
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err = touch_ft6x36_i2c_read(tp, FT62XX_REG_NUMTOUCHES, &points, 1);
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ESP_RETURN_ON_ERROR(err, TAG, "I2C read error!");
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if (points > 2 || points == 0)
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{
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return ESP_OK;
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}
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/* Number of touched points */
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points = (points > CONFIG_ESP_LCD_TOUCH_MAX_POINTS ? CONFIG_ESP_LCD_TOUCH_MAX_POINTS : points);
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err = touch_ft6x36_i2c_read(tp, FT62XX_REG_READDATA, data, 16);
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ESP_RETURN_ON_ERROR(err, TAG, "I2C read error!");
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/* Number of touched points */
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touches = data[0x02];
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/* Check if the number of touched points is correct */
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if (points != touches)
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{
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return ESP_OK;
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}
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portENTER_CRITICAL(&tp->data.lock);
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/* Number of touched points */
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tp->data.points = points;
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/* Fill all coordinates */
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for (i = 0; i < points; i++)
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{
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tp->data.coords[i].x = ((data[0x03 + i * 6] & 0x0F) << 8) | data[0x04 + i * 6];
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tp->data.coords[i].y = ((data[0x05 + i * 6] & 0x0F) << 8) | data[0x06 + i * 6];
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}
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portEXIT_CRITICAL(&tp->data.lock);
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return ESP_OK;
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}
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static bool esp_lcd_touch_ft6x36_get_xy(esp_lcd_touch_handle_t tp, uint16_t *x, uint16_t *y, uint16_t *strength, uint8_t *point_num, uint8_t max_point_num)
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{
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assert(tp != NULL);
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assert(x != NULL);
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assert(y != NULL);
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assert(point_num != NULL);
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assert(max_point_num > 0);
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portENTER_CRITICAL(&tp->data.lock);
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/* Count of points */
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*point_num = (tp->data.points > max_point_num ? max_point_num : tp->data.points);
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for (size_t i = 0; i < *point_num; i++)
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{
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x[i] = tp->data.coords[i].x;
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y[i] = tp->data.coords[i].y;
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if (strength)
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{
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strength[i] = tp->data.coords[i].strength;
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}
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}
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/* Invalidate */
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tp->data.points = 0;
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portEXIT_CRITICAL(&tp->data.lock);
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return (*point_num > 0);
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}
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static esp_err_t esp_lcd_touch_ft6x36_del(esp_lcd_touch_handle_t tp)
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{
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assert(tp != NULL);
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/* Reset GPIO pin settings */
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if (tp->config.int_gpio_num != GPIO_NUM_NC)
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{
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gpio_reset_pin(tp->config.int_gpio_num);
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if (tp->config.interrupt_callback)
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{
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gpio_isr_handler_remove(tp->config.int_gpio_num);
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}
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}
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/* Reset GPIO pin settings */
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if (tp->config.rst_gpio_num != GPIO_NUM_NC)
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{
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gpio_reset_pin(tp->config.rst_gpio_num);
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}
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free(tp);
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return ESP_OK;
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}
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/*******************************************************************************
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* Private API function
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*******************************************************************************/
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static esp_err_t touch_ft6x36_init(esp_lcd_touch_handle_t tp)
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{
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esp_err_t ret = ESP_OK;
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uint8_t vend_id, chip_id, firm_vers, point_rate, thresh, reg_val;
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assert(tp != NULL);
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/* Read vendor ID */
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ESP_RETURN_ON_ERROR(touch_ft6x36_i2c_read(tp, FT62XX_REG_VENDID, &vend_id, 1), TAG, "Read vendor ID error");
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/* Read chip ID */
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ESP_RETURN_ON_ERROR(touch_ft6x36_i2c_read(tp, FT62XX_REG_CHIPID, &chip_id, 1), TAG, "Read chip ID error");
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/* Read firmware version */
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ESP_RETURN_ON_ERROR(touch_ft6x36_i2c_read(tp, FT62XX_REG_FIRMVERS, &firm_vers, 1), TAG, "Read firmware version error");
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/* Read point rate */
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ESP_RETURN_ON_ERROR(touch_ft6x36_i2c_read(tp, FT62XX_REG_POINTRATE, &point_rate, 1), TAG, "Read point rate error");
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/* Read threshold */
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ESP_RETURN_ON_ERROR(touch_ft6x36_i2c_read(tp, FT62XX_REG_THRESHHOLD, &thresh, 1), TAG, "Read threshold error");
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/* Print out the values */
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ESP_LOGI(TAG, "Vend ID: 0x%02X", vend_id);
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ESP_LOGI(TAG, "Chip ID: 0x%02X", chip_id);
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ESP_LOGI(TAG, "Firm V: %d", firm_vers);
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ESP_LOGI(TAG, "Point Rate Hz: %d", point_rate);
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ESP_LOGI(TAG, "Thresh: %d", thresh);
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/* Dump all registers */
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ESP_LOGI(TAG, "Dumping all registers:");
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for (int16_t i = 0; i < 0x10; i++)
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{
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/* Read register */
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if (touch_ft6x36_i2c_read(tp, i, ®_val, 1) == ESP_OK)
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{
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ESP_LOGI(TAG, "I2C $%02X = 0x%02X", i, reg_val);
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}
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else
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{
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ESP_LOGE(TAG, "Failed to read register 0x%02X", i);
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}
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}
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/* Check if the values are valid */
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if (vend_id != FT62XX_VENDID && vend_id != FT6336_VENDID)
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{
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ESP_LOGE(TAG, "Invalid vendor ID: 0x%02X", vend_id);
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return ESP_FAIL;
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}
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/* Check if the chip ID is supported */
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if (chip_id != FT6206_CHIPID && chip_id != FT6236_CHIPID && chip_id != FT6236U_CHIPID && chip_id != FT6336U_CHIPID && chip_id != FT3236_CHIPID)
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{
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ESP_LOGE(TAG, "Unsupported chip ID: 0x%02X", chip_id);
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return ESP_FAIL;
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}
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/* Set to work mode */
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ret |= touch_ft6x36_i2c_write(tp, FT62XX_REG_MODE, FT62XX_REG_WORKMODE);
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||||
/* Set threshold */
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ret |= touch_ft6x36_i2c_write(tp, FT62XX_REG_THRESHHOLD, FT62XX_DEFAULT_THRESHOLD);
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||||
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||||
/* Set point rate */
|
||||
ret |= touch_ft6x36_i2c_write(tp, FT62XX_REG_POINTRATE, 0x0E);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Reset controller */
|
||||
static esp_err_t touch_ft6x36_reset(esp_lcd_touch_handle_t tp)
|
||||
{
|
||||
assert(tp != NULL);
|
||||
|
||||
if (tp->config.rst_gpio_num != GPIO_NUM_NC)
|
||||
{
|
||||
ESP_RETURN_ON_ERROR(gpio_set_level(tp->config.rst_gpio_num, tp->config.levels.reset), TAG, "GPIO set level error!");
|
||||
vTaskDelay(pdMS_TO_TICKS(20));
|
||||
ESP_RETURN_ON_ERROR(gpio_set_level(tp->config.rst_gpio_num, !tp->config.levels.reset), TAG, "GPIO set level error!");
|
||||
vTaskDelay(pdMS_TO_TICKS(500));
|
||||
}
|
||||
|
||||
return ESP_OK;
|
||||
}
|
||||
|
||||
static esp_err_t touch_ft6x36_i2c_write(esp_lcd_touch_handle_t tp, uint8_t reg, uint8_t data)
|
||||
{
|
||||
assert(tp != NULL);
|
||||
|
||||
// *INDENT-OFF*
|
||||
/* Write data */
|
||||
return esp_lcd_panel_io_tx_param(tp->io, reg, (uint8_t[]){data}, 1);
|
||||
// *INDENT-ON*
|
||||
}
|
||||
|
||||
static esp_err_t touch_ft6x36_i2c_read(esp_lcd_touch_handle_t tp, uint8_t reg, uint8_t *data, uint8_t len)
|
||||
{
|
||||
assert(tp != NULL);
|
||||
assert(data != NULL);
|
||||
|
||||
/* Read data */
|
||||
return esp_lcd_panel_io_rx_param(tp->io, reg, data, len);
|
||||
}
|
||||
@@ -0,0 +1,12 @@
|
||||
dependencies:
|
||||
esp_lcd_touch:
|
||||
public: true
|
||||
version: ^1.0.4
|
||||
idf: '>=4.4.2'
|
||||
description: ESP LCD Touch FT6x36 - touch controller FT6x36
|
||||
repository: git://github.com/lambage/esp_lcd_touch_ft6x36.git
|
||||
repository_info:
|
||||
commit_sha: c2772def5d1168bb3ba85c1334dd07ea99b977ec
|
||||
path: components/esp_lcd_touch_ft6x36
|
||||
url: https://github.com/espressif/esp-bsp/tree/master/components/lcd_touch
|
||||
version: 1.0.8
|
||||
@@ -0,0 +1,59 @@
|
||||
/*
|
||||
* SPDX-FileCopyrightText: 2025 CFSoft Systems (Chengdu) CO LTD
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file
|
||||
* @brief ESP LCD touch: FT6x36
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "esp_lcd_touch.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C"
|
||||
{
|
||||
#endif
|
||||
|
||||
/**
|
||||
* @brief Create a new FT6x36 touch driver
|
||||
*
|
||||
* @note The I2C communication should be initialized before use this function.
|
||||
*
|
||||
* @param io LCD/Touch panel IO handle
|
||||
* @param config: Touch configuration
|
||||
* @param out_touch: Touch instance handle
|
||||
* @return
|
||||
* - ESP_OK on success
|
||||
* - ESP_ERR_NO_MEM if there is no memory for allocating main structure
|
||||
*/
|
||||
esp_err_t esp_lcd_touch_new_i2c_ft6x36(const esp_lcd_panel_io_handle_t io, const esp_lcd_touch_config_t *config, esp_lcd_touch_handle_t *out_touch);
|
||||
|
||||
/**
|
||||
* @brief I2C address of the FT6x36 controller
|
||||
*
|
||||
*/
|
||||
#define ESP_LCD_TOUCH_IO_I2C_FT6x36_ADDRESS (0x38)
|
||||
|
||||
/**
|
||||
* @brief Touch IO configuration structure
|
||||
*
|
||||
*/
|
||||
#define ESP_LCD_TOUCH_IO_I2C_FT6x36_CONFIG() \
|
||||
{ \
|
||||
.dev_addr = ESP_LCD_TOUCH_IO_I2C_FT6x36_ADDRESS, \
|
||||
.control_phase_bytes = 1, \
|
||||
.dc_bit_offset = 0, \
|
||||
.lcd_cmd_bits = 8, \
|
||||
.flags = \
|
||||
{ \
|
||||
.disable_control_phase = 1, \
|
||||
} \
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
@@ -0,0 +1,202 @@
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
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|
||||
|
||||
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|
||||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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