add some code

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idf_component_register(SRCS "esp_lcd_touch_ft5x06.c" INCLUDE_DIRS "include" REQUIRES "esp_lcd")

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# ESP LCD Touch FT5x06 Controller
[![Component Registry](https://components.espressif.com/components/espressif/esp_lcd_touch_ft5x06/badge.svg)](https://components.espressif.com/components/espressif/esp_lcd_touch_ft5x06)
Implementation of the FT5x06 touch controller with esp_lcd_touch component.
| Touch controller | Communication interface | Component name | Link to datasheet |
| :--------------: | :---------------------: | :------------: | :---------------: |
| FT5x06 | I2C (SPI [^1]) | esp_lcd_touch_ft5x06 | [PDF](https://www.displayfuture.com/Display/datasheet/controller/FT5x06.pdf) |
[^1]: **NOTE:** This controller should work via I2C or SPI communication interface. But it was tested on HW only via I2C communication interface.
## Add to project
Packages from this repository are uploaded to [Espressif's component service](https://components.espressif.com/).
You can add them to your project via `idf.py add-dependancy`, e.g.
```
idf.py add-dependency esp_lcd_touch_ft5x06==1.0.0
```
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).
## Example use
I2C initialization of the touch component.
```
esp_lcd_panel_io_i2c_config_t io_config = ESP_LCD_TOUCH_IO_I2C_FT5x06_CONFIG();
esp_lcd_touch_config_t tp_cfg = {
.x_max = CONFIG_LCD_HRES,
.y_max = CONFIG_LCD_VRES,
.rst_gpio_num = -1,
.int_gpio_num = -1,
.levels = {
.reset = 0,
.interrupt = 0,
},
.flags = {
.swap_xy = 0,
.mirror_x = 0,
.mirror_y = 0,
},
};
esp_lcd_touch_handle_t tp;
esp_lcd_touch_new_i2c_ft5x06(io_handle, &tp_cfg, &tp);
```
Read data from the touch controller and store it in RAM memory. It should be called regularly in poll.
```
esp_lcd_touch_read_data(tp);
```
Get one X and Y coordinates with strength of touch.
```
uint16_t touch_x[1];
uint16_t touch_y[1];
uint16_t touch_strength[1];
uint8_t touch_cnt = 0;
bool touchpad_pressed = esp_lcd_touch_get_coordinates(tp, touch_x, touch_y, touch_strength, &touch_cnt, 1);
```

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/*
* SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_system.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_check.h"
#include "driver/gpio.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_touch.h"
static const char *TAG = "FT5x06";
/* Registers */
#define FT5x06_DEVICE_MODE (0x00)
#define FT5x06_GESTURE_ID (0x01)
#define FT5x06_TOUCH_POINTS (0x02)
#define FT5x06_TOUCH1_EV_FLAG (0x03)
#define FT5x06_TOUCH1_XH (0x03)
#define FT5x06_TOUCH1_XL (0x04)
#define FT5x06_TOUCH1_YH (0x05)
#define FT5x06_TOUCH1_YL (0x06)
#define FT5x06_TOUCH2_EV_FLAG (0x09)
#define FT5x06_TOUCH2_XH (0x09)
#define FT5x06_TOUCH2_XL (0x0A)
#define FT5x06_TOUCH2_YH (0x0B)
#define FT5x06_TOUCH2_YL (0x0C)
#define FT5x06_TOUCH3_EV_FLAG (0x0F)
#define FT5x06_TOUCH3_XH (0x0F)
#define FT5x06_TOUCH3_XL (0x10)
#define FT5x06_TOUCH3_YH (0x11)
#define FT5x06_TOUCH3_YL (0x12)
#define FT5x06_TOUCH4_EV_FLAG (0x15)
#define FT5x06_TOUCH4_XH (0x15)
#define FT5x06_TOUCH4_XL (0x16)
#define FT5x06_TOUCH4_YH (0x17)
#define FT5x06_TOUCH4_YL (0x18)
#define FT5x06_TOUCH5_EV_FLAG (0x1B)
#define FT5x06_TOUCH5_XH (0x1B)
#define FT5x06_TOUCH5_XL (0x1C)
#define FT5x06_TOUCH5_YH (0x1D)
#define FT5x06_TOUCH5_YL (0x1E)
#define FT5x06_ID_G_THGROUP (0x80)
#define FT5x06_ID_G_THPEAK (0x81)
#define FT5x06_ID_G_THCAL (0x82)
#define FT5x06_ID_G_THWATER (0x83)
#define FT5x06_ID_G_THTEMP (0x84)
#define FT5x06_ID_G_THDIFF (0x85)
#define FT5x06_ID_G_CTRL (0x86)
#define FT5x06_ID_G_TIME_ENTER_MONITOR (0x87)
#define FT5x06_ID_G_PERIODACTIVE (0x88)
#define FT5x06_ID_G_PERIODMONITOR (0x89)
#define FT5x06_ID_G_AUTO_CLB_MODE (0xA0)
#define FT5x06_ID_G_LIB_VERSION_H (0xA1)
#define FT5x06_ID_G_LIB_VERSION_L (0xA2)
#define FT5x06_ID_G_CIPHER (0xA3)
#define FT5x06_ID_G_MODE (0xA4)
#define FT5x06_ID_G_PMODE (0xA5)
#define FT5x06_ID_G_FIRMID (0xA6)
#define FT5x06_ID_G_STATE (0xA7)
#define FT5x06_ID_G_FT5201ID (0xA8)
#define FT5x06_ID_G_ERR (0xA9)
/*******************************************************************************
* Function definitions
*******************************************************************************/
static esp_err_t esp_lcd_touch_ft5x06_read_data(esp_lcd_touch_handle_t tp);
static bool esp_lcd_touch_ft5x06_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);
static esp_err_t esp_lcd_touch_ft5x06_del(esp_lcd_touch_handle_t tp);
/* I2C read */
static esp_err_t touch_ft5x06_i2c_write(esp_lcd_touch_handle_t tp, uint8_t reg, uint8_t data);
static esp_err_t touch_ft5x06_i2c_read(esp_lcd_touch_handle_t tp, uint8_t reg, uint8_t *data, uint8_t len);
/* FT5x06 init */
static esp_err_t touch_ft5x06_init(esp_lcd_touch_handle_t tp);
/* FT5x06 reset */
static esp_err_t touch_ft5x06_reset(esp_lcd_touch_handle_t tp);
/*******************************************************************************
* Public API functions
*******************************************************************************/
esp_err_t esp_lcd_touch_new_i2c_ft5x06(const esp_lcd_panel_io_handle_t io, const esp_lcd_touch_config_t *config, esp_lcd_touch_handle_t *out_touch)
{
esp_err_t ret = ESP_OK;
assert(config != NULL);
assert(out_touch != NULL);
/* Prepare main structure */
esp_lcd_touch_handle_t esp_lcd_touch_ft5x06 = heap_caps_calloc(1, sizeof(esp_lcd_touch_t), MALLOC_CAP_DEFAULT);
ESP_GOTO_ON_FALSE(esp_lcd_touch_ft5x06, ESP_ERR_NO_MEM, err, TAG, "no mem for FT5x06 controller");
/* Communication interface */
esp_lcd_touch_ft5x06->io = io;
/* Only supported callbacks are set */
esp_lcd_touch_ft5x06->read_data = esp_lcd_touch_ft5x06_read_data;
esp_lcd_touch_ft5x06->get_xy = esp_lcd_touch_ft5x06_get_xy;
esp_lcd_touch_ft5x06->del = esp_lcd_touch_ft5x06_del;
/* Mutex */
esp_lcd_touch_ft5x06->data.lock.owner = portMUX_FREE_VAL;
/* Save config */
memcpy(&esp_lcd_touch_ft5x06->config, config, sizeof(esp_lcd_touch_config_t));
/* Prepare pin for touch interrupt */
if (esp_lcd_touch_ft5x06->config.int_gpio_num != GPIO_NUM_NC) {
const gpio_config_t int_gpio_config = {
.mode = GPIO_MODE_INPUT,
.intr_type = (esp_lcd_touch_ft5x06->config.levels.interrupt ? GPIO_INTR_POSEDGE : GPIO_INTR_NEGEDGE),
.pin_bit_mask = BIT64(esp_lcd_touch_ft5x06->config.int_gpio_num)
};
ret = gpio_config(&int_gpio_config);
ESP_GOTO_ON_ERROR(ret, err, TAG, "GPIO config failed");
/* Register interrupt callback */
if (esp_lcd_touch_ft5x06->config.interrupt_callback) {
esp_lcd_touch_register_interrupt_callback(esp_lcd_touch_ft5x06, esp_lcd_touch_ft5x06->config.interrupt_callback);
}
}
/* Prepare pin for touch controller reset */
if (esp_lcd_touch_ft5x06->config.rst_gpio_num != GPIO_NUM_NC) {
const gpio_config_t rst_gpio_config = {
.mode = GPIO_MODE_OUTPUT,
.pin_bit_mask = BIT64(esp_lcd_touch_ft5x06->config.rst_gpio_num)
};
ret = gpio_config(&rst_gpio_config);
ESP_GOTO_ON_ERROR(ret, err, TAG, "GPIO config failed");
}
/* Reset controller */
ret = touch_ft5x06_reset(esp_lcd_touch_ft5x06);
ESP_GOTO_ON_ERROR(ret, err, TAG, "FT5x06 reset failed");
/* Init controller */
ret = touch_ft5x06_init(esp_lcd_touch_ft5x06);
ESP_GOTO_ON_ERROR(ret, err, TAG, "FT5x06 init failed");
*out_touch = esp_lcd_touch_ft5x06;
err:
if (ret != ESP_OK) {
ESP_LOGE(TAG, "Error (0x%x)! Touch controller FT5x06 initialization failed!", ret);
if (esp_lcd_touch_ft5x06) {
esp_lcd_touch_ft5x06_del(esp_lcd_touch_ft5x06);
}
}
return ret;
}
static esp_err_t esp_lcd_touch_ft5x06_read_data(esp_lcd_touch_handle_t tp)
{
esp_err_t err;
uint8_t data[30];
uint8_t points;
size_t i = 0;
assert(tp != NULL);
err = touch_ft5x06_i2c_read(tp, FT5x06_TOUCH_POINTS, &points, 1);
ESP_RETURN_ON_ERROR(err, TAG, "I2C read error!");
if (points > 5 || points == 0) {
return ESP_OK;
}
/* Number of touched points */
points = (points > CONFIG_ESP_LCD_TOUCH_MAX_POINTS ? CONFIG_ESP_LCD_TOUCH_MAX_POINTS : points);
err = touch_ft5x06_i2c_read(tp, FT5x06_TOUCH1_XH, data, 6 * points);
ESP_RETURN_ON_ERROR(err, TAG, "I2C read error!");
portENTER_CRITICAL(&tp->data.lock);
/* Number of touched points */
tp->data.points = points;
/* Fill all coordinates */
for (i = 0; i < points; i++) {
tp->data.coords[i].x = (((uint16_t)data[(i * 6) + 0] & 0x0f) << 8) + data[(i * 6) + 1];
tp->data.coords[i].y = (((uint16_t)data[(i * 6) + 2] & 0x0f) << 8) + data[(i * 6) + 3];
}
portEXIT_CRITICAL(&tp->data.lock);
return ESP_OK;
}
static bool esp_lcd_touch_ft5x06_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)
{
assert(tp != NULL);
assert(x != NULL);
assert(y != NULL);
assert(point_num != NULL);
assert(max_point_num > 0);
portENTER_CRITICAL(&tp->data.lock);
/* Count of points */
*point_num = (tp->data.points > max_point_num ? max_point_num : tp->data.points);
for (size_t i = 0; i < *point_num; i++) {
x[i] = tp->data.coords[i].x;
y[i] = tp->data.coords[i].y;
if (strength) {
strength[i] = tp->data.coords[i].strength;
}
}
/* Invalidate */
tp->data.points = 0;
portEXIT_CRITICAL(&tp->data.lock);
return (*point_num > 0);
}
static esp_err_t esp_lcd_touch_ft5x06_del(esp_lcd_touch_handle_t tp)
{
assert(tp != NULL);
/* Reset GPIO pin settings */
if (tp->config.int_gpio_num != GPIO_NUM_NC) {
gpio_reset_pin(tp->config.int_gpio_num);
if (tp->config.interrupt_callback) {
gpio_isr_handler_remove(tp->config.int_gpio_num);
}
}
/* Reset GPIO pin settings */
if (tp->config.rst_gpio_num != GPIO_NUM_NC) {
gpio_reset_pin(tp->config.rst_gpio_num);
}
free(tp);
return ESP_OK;
}
/*******************************************************************************
* Private API function
*******************************************************************************/
static esp_err_t touch_ft5x06_init(esp_lcd_touch_handle_t tp)
{
esp_err_t ret = ESP_OK;
// Valid touching detect threshold
ret |= touch_ft5x06_i2c_write(tp, FT5x06_ID_G_THGROUP, 70);
// valid touching peak detect threshold
ret |= touch_ft5x06_i2c_write(tp, FT5x06_ID_G_THPEAK, 60);
// Touch focus threshold
ret |= touch_ft5x06_i2c_write(tp, FT5x06_ID_G_THCAL, 16);
// threshold when there is surface water
ret |= touch_ft5x06_i2c_write(tp, FT5x06_ID_G_THWATER, 60);
// threshold of temperature compensation
ret |= touch_ft5x06_i2c_write(tp, FT5x06_ID_G_THTEMP, 10);
// Touch difference threshold
ret |= touch_ft5x06_i2c_write(tp, FT5x06_ID_G_THDIFF, 20);
// Delay to enter 'Monitor' status (s)
ret |= touch_ft5x06_i2c_write(tp, FT5x06_ID_G_TIME_ENTER_MONITOR, 2);
// Period of 'Active' status (ms)
ret |= touch_ft5x06_i2c_write(tp, FT5x06_ID_G_PERIODACTIVE, 12);
// Timer to enter 'idle' when in 'Monitor' (ms)
ret |= touch_ft5x06_i2c_write(tp, FT5x06_ID_G_PERIODMONITOR, 40);
return ret;
}
/* Reset controller */
static esp_err_t touch_ft5x06_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(10));
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(10));
}
return ESP_OK;
}
static esp_err_t touch_ft5x06_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_ft5x06_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);
}

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dependencies:
esp_lcd_touch:
public: true
version: ^1.0.4
idf: '>=4.4.2'
description: ESP LCD Touch FT5x06 - touch controller FT5x06
repository: git://github.com/espressif/esp-bsp.git
repository_info:
commit_sha: e5daac9acdfecafa1f56bc64b670543cb4d76d94
path: components/lcd_touch/esp_lcd_touch_ft5x06
url: https://github.com/espressif/esp-bsp/tree/master/components/lcd_touch/esp_lcd_touch_ft5x06
version: 1.0.7

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/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief ESP LCD touch: FT5x06
*/
#pragma once
#include "esp_lcd_touch.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Create a new FT5x06 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_ft5x06(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 FT5x06 controller
*
*/
#define ESP_LCD_TOUCH_IO_I2C_FT5x06_ADDRESS (0x38)
/**
* @brief Touch IO configuration structure
*
*/
#define ESP_LCD_TOUCH_IO_I2C_FT5x06_CONFIG() \
{ \
.dev_addr = ESP_LCD_TOUCH_IO_I2C_FT5x06_ADDRESS, \
.control_phase_bytes = 1, \
.dc_bit_offset = 0, \
.lcd_cmd_bits = 8, \
.flags = \
{ \
.disable_control_phase = 1, \
} \
}
#ifdef __cplusplus
}
#endif

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