1. 测试了屏幕驱动,lvgl,触摸,驱动文件在Lib/Display当中。全部通过(修改了sdkconfig,以适配lvgl)

2. 新增了优雅的C语言错误处理
This commit is contained in:
Misaki
2025-08-25 11:07:52 +08:00
parent ec33aa0483
commit 7fa73d6183
23 changed files with 4495 additions and 16 deletions
+243
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#include "CST816.h"
#define POINT_NUM_MAX (1)
#define DATA_START_REG (0x02)
#define CHIP_ID_REG (0xA7)
#define AutoSleep_REG (0xFE)
static const char *TAG = "CST816";
esp_lcd_touch_handle_t tp = NULL;
static esp_err_t read_data(esp_lcd_touch_handle_t tp);
static bool 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 del(esp_lcd_touch_handle_t tp);
static esp_err_t i2c_read_bytes(esp_lcd_touch_handle_t tp, uint16_t reg, uint8_t *data, uint8_t len);
static esp_err_t i2c_write_bytes(esp_lcd_touch_handle_t tp, uint16_t reg, uint8_t* data, uint8_t len);
static esp_err_t reset(esp_lcd_touch_handle_t tp);
static esp_err_t read_id(esp_lcd_touch_handle_t tp);
static void AutoSleep(bool Sleep_State);
esp_err_t esp_lcd_touch_new_i2c_cst816(const esp_lcd_panel_io_handle_t io, const esp_lcd_touch_config_t *config, esp_lcd_touch_handle_t *tp)
{
ESP_RETURN_ON_FALSE(io, ESP_ERR_INVALID_ARG, TAG, "Invalid io");
ESP_RETURN_ON_FALSE(config, ESP_ERR_INVALID_ARG, TAG, "Invalid config");
ESP_RETURN_ON_FALSE(tp, ESP_ERR_INVALID_ARG, TAG, "Invalid touch handle");
/* Prepare main structure */
esp_err_t ret = ESP_OK;
esp_lcd_touch_handle_t cst816s = calloc(1, sizeof(esp_lcd_touch_t));
ESP_GOTO_ON_FALSE(cst816s, ESP_ERR_NO_MEM, err, TAG, "Touch handle malloc failed");
/* Communication interface */
cst816s->io = io;
/* Only supported callbacks are set */
cst816s->read_data = read_data;
cst816s->get_xy = get_xy;
cst816s->del = del;
/* Mutex */
cst816s->data.lock.owner = portMUX_FREE_VAL;
/* Save config */
memcpy(&cst816s->config, config, sizeof(esp_lcd_touch_config_t));
/* Prepare pin for touch interrupt */
if (cst816s->config.int_gpio_num != GPIO_NUM_NC) {
const gpio_config_t int_gpio_config = {
.mode = GPIO_MODE_INPUT,
.intr_type = (cst816s->config.levels.interrupt ? GPIO_INTR_POSEDGE : GPIO_INTR_NEGEDGE),
.pin_bit_mask = BIT64(cst816s->config.int_gpio_num)
};
ESP_GOTO_ON_ERROR(gpio_config(&int_gpio_config), err, TAG, "GPIO intr config failed");
/* Register interrupt callback */
if (cst816s->config.interrupt_callback) {
esp_lcd_touch_register_interrupt_callback(cst816s, cst816s->config.interrupt_callback);
}
}
/* Prepare pin for touch controller reset */
if (cst816s->config.rst_gpio_num != GPIO_NUM_NC) {
const gpio_config_t rst_gpio_config = {
.mode = GPIO_MODE_OUTPUT,
.pin_bit_mask = BIT64(cst816s->config.rst_gpio_num)
};
ESP_GOTO_ON_ERROR(gpio_config(&rst_gpio_config), err, TAG, "GPIO reset config failed");
}
/* Reset controller */
ESP_GOTO_ON_ERROR(reset(cst816s), err, TAG, "Reset failed");
/* Read product id */
ESP_GOTO_ON_ERROR(read_id(cst816s), err, TAG, "Read version failed");
*tp = cst816s;
AutoSleep(false);
return ESP_OK;
err:
if (cst816s) {
del(cst816s);
}
ESP_LOGE(TAG, "Initialization failed!");
return ret;
}
static esp_err_t read_data(esp_lcd_touch_handle_t tp)
{
typedef struct {
uint8_t num;
uint8_t x_h : 4;
uint8_t : 4;
uint8_t x_l;
uint8_t y_h : 4;
uint8_t : 4;
uint8_t y_l;
} data_t;
data_t point;
ESP_RETURN_ON_ERROR(i2c_read_bytes(tp, DATA_START_REG, (uint8_t *)&point, sizeof(data_t)), TAG, "I2C read failed");
portENTER_CRITICAL(&tp->data.lock);
point.num = (point.num > POINT_NUM_MAX ? POINT_NUM_MAX : point.num);
tp->data.points = point.num;
/* Fill all coordinates */
for (int i = 0; i < point.num; i++) {
tp->data.coords[i].x = point.x_h << 8 | point.x_l;
tp->data.coords[i].y = point.y_h << 8 | point.y_l;
}
portEXIT_CRITICAL(&tp->data.lock);
return ESP_OK;
}
static bool 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)
{
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 del(esp_lcd_touch_handle_t tp)
{
/* 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);
}
}
if (tp->config.rst_gpio_num != GPIO_NUM_NC) {
gpio_reset_pin(tp->config.rst_gpio_num);
}
/* Release memory */
free(tp);
return ESP_OK;
}
static esp_err_t reset(esp_lcd_touch_handle_t tp)
{
Set_EXIO(TCA9554_EXIO1,false);
vTaskDelay(pdMS_TO_TICKS(10));
Set_EXIO(TCA9554_EXIO1,true);
vTaskDelay(pdMS_TO_TICKS(50));
return ESP_OK;
}
static esp_err_t read_id(esp_lcd_touch_handle_t tp)
{
uint8_t id;
ESP_RETURN_ON_ERROR(i2c_read_bytes(tp, CHIP_ID_REG, &id, 1), TAG, "I2C read failed");
ESP_LOGI(TAG, "IC id: %d", id);
return ESP_OK;
}
/*!
@brief Fall asleep automatically
*/
static void AutoSleep(bool Sleep_State) {
uint8_t Sleep_State_Set = (uint8_t)(!Sleep_State);
i2c_write_bytes(tp, AutoSleep_REG, &Sleep_State_Set, 1);
}
static esp_err_t i2c_read_bytes(esp_lcd_touch_handle_t tp, uint16_t reg, uint8_t *data, uint8_t len)
{
ESP_RETURN_ON_FALSE(data, ESP_ERR_INVALID_ARG, TAG, "Invalid data");
return esp_lcd_panel_io_rx_param(tp->io, reg, data, len);
}
static esp_err_t i2c_write_bytes(esp_lcd_touch_handle_t tp, uint16_t reg, uint8_t* data, uint8_t len)
{
assert(tp != NULL);
// *INDENT-OFF*
/* Write data */
return esp_lcd_panel_io_tx_param(tp->io, reg, data, len);
// *INDENT-ON*
}
/**
* @brief i2c master initialization
*/
esp_err_t Touch_I2C_Init(void)
{
int i2c_master_port = I2C_Touch_MASTER_NUM;
i2c_config_t conf = {
.mode = I2C_MODE_MASTER,
.sda_io_num = I2C_Touch_SDA_IO,
.scl_io_num = I2C_Touch_SCL_IO,
.sda_pullup_en = GPIO_PULLUP_ENABLE,
.scl_pullup_en = GPIO_PULLUP_ENABLE,
.master.clk_speed = I2C_Touch_MASTER_FREQ_HZ,
};
i2c_param_config(i2c_master_port, &conf);
return i2c_driver_install(i2c_master_port, conf.mode, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void Touch_Init(void)
{
ESP_ERROR_CHECK(Touch_I2C_Init());
ESP_LOGI(TAG, "I2C initialized successfully");
/********************* Touch *********************/
esp_lcd_panel_io_handle_t tp_io_handle = NULL;
esp_lcd_panel_io_i2c_config_t tp_io_config = ESP_LCD_TOUCH_IO_I2C_CST816_CONFIG();
ESP_LOGI(TAG, "Initialize touch IO (I2C)");
/* Touch IO handle */
ESP_ERROR_CHECK(esp_lcd_new_panel_io_i2c((esp_lcd_i2c_bus_handle_t)I2C_Touch_MASTER_NUM, &tp_io_config, &tp_io_handle));
esp_lcd_touch_config_t tp_cfg = {
.x_max = EXAMPLE_LCD_WIDTH,
.y_max = EXAMPLE_LCD_HEIGHT,
.rst_gpio_num = I2C_Touch_RST_IO,
.int_gpio_num = I2C_Touch_INT_IO,
.flags = {
.swap_xy = 0,
.mirror_x = 0,
.mirror_y = 0,
},
};
/* Initialize touch */
ESP_LOGI(TAG, "Initialize touch controller CST816");
ESP_ERROR_CHECK(esp_lcd_touch_new_i2c_cst816(tp_io_handle, &tp_cfg, &tp));
}
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/**
* @file
* @brief ESP LCD touch: CST820
*/
#pragma once
#include <inttypes.h>
#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"
#include "driver/i2c.h"
#include "esp_system.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_check.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_touch.h"
#include "TCA9554PWR.h"
#include "ST77916.h"
/**
* @brief Create a new CST816S touch driver
*
* @note The I2C communication should be initialized before use this function.
*
* @param io LCD panel IO handle, it should be created by `esp_lcd_new_panel_io_i2c()`
* @param config Touch panel configuration
* @param tp Touch panel handle
* @return
* - ESP_OK: on success
*/
esp_err_t esp_lcd_touch_new_i2c_cst816s(const esp_lcd_panel_io_handle_t io, const esp_lcd_touch_config_t *config, esp_lcd_touch_handle_t *tp);
/**
* @brief I2C address of the CST816S controller
*
*/
#define ESP_LCD_TOUCH_IO_I2C_CST816S_ADDRESS (0x15)
/**
* @brief Touch IO configuration structure
*
*/
#define ESP_LCD_TOUCH_IO_I2C_CST816_CONFIG() \
{ \
.dev_addr = ESP_LCD_TOUCH_IO_I2C_CST816S_ADDRESS, \
.control_phase_bytes = 1, \
.dc_bit_offset = 0, \
.lcd_cmd_bits = 8, \
.flags = \
{ \
.disable_control_phase = 1, \
} \
}
// I2C settings
#define I2C_Touch_SDA_IO 1 /*!< GPIO number used for I2C master data */
#define I2C_Touch_SCL_IO 3 /*!< GPIO number used for I2C master clock */
#define I2C_Touch_INT_IO 4 /*!< GPIO number used for I2C master data */
#define I2C_Touch_RST_IO -1 /*!< GPIO number used for I2C master clock */
#define I2C_Touch_MASTER_NUM 1 /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
#define I2C_Touch_MASTER_FREQ_HZ 400000 /*!< I2C master clock frequency */
extern esp_lcd_touch_handle_t tp;
void Touch_Init(void);
@@ -0,0 +1,258 @@
/*
* SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <stdlib.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"
#include "esp_system.h"
#include "esp_err.h"
#include "esp_check.h"
#include "esp_log.h"
#include "esp_lcd_touch.h"
static const char *TAG = "TP";
/*******************************************************************************
* Function definitions
*******************************************************************************/
/*******************************************************************************
* Local variables
*******************************************************************************/
/*******************************************************************************
* Public API functions
*******************************************************************************/
esp_err_t esp_lcd_touch_enter_sleep(esp_lcd_touch_handle_t tp)
{
assert(tp != NULL);
if (tp->enter_sleep == NULL) {
ESP_LOGE(TAG, "Sleep mode not supported!");
return ESP_FAIL;
} else {
return tp->enter_sleep(tp);
}
}
esp_err_t esp_lcd_touch_exit_sleep(esp_lcd_touch_handle_t tp)
{
assert(tp != NULL);
if (tp->exit_sleep == NULL) {
ESP_LOGE(TAG, "Sleep mode not supported!");
return ESP_FAIL;
} else {
return tp->exit_sleep(tp);
}
}
esp_err_t esp_lcd_touch_read_data(esp_lcd_touch_handle_t tp)
{
assert(tp != NULL);
assert(tp->read_data != NULL);
return tp->read_data(tp);
}
bool esp_lcd_touch_get_coordinates(esp_lcd_touch_handle_t tp, uint16_t *x, uint16_t *y, uint16_t *strength, uint8_t *point_num, uint8_t max_point_num)
{
bool touched = false;
assert(tp != NULL);
assert(x != NULL);
assert(y != NULL);
assert(tp->get_xy != NULL);
touched = tp->get_xy(tp, x, y, strength, point_num, max_point_num);
if (!touched) {
return false;
}
/* Process coordinates by user */
if (tp->config.process_coordinates != NULL) {
tp->config.process_coordinates(tp, x, y, strength, point_num, max_point_num);
}
/* Software coordinates adjustment needed */
bool sw_adj_needed = ((tp->config.flags.mirror_x && (tp->set_mirror_x == NULL)) ||
(tp->config.flags.mirror_y && (tp->set_mirror_y == NULL)) ||
(tp->config.flags.swap_xy && (tp->set_swap_xy == NULL)));
/* Adjust all coordinates */
for (int i = 0; (sw_adj_needed && i < *point_num); i++) {
/* Mirror X coordinates (if not supported by HW) */
if (tp->config.flags.mirror_x && tp->set_mirror_x == NULL) {
x[i] = tp->config.x_max - x[i];
}
/* Mirror Y coordinates (if not supported by HW) */
if (tp->config.flags.mirror_y && tp->set_mirror_y == NULL) {
y[i] = tp->config.y_max - y[i];
}
/* Swap X and Y coordinates (if not supported by HW) */
if (tp->config.flags.swap_xy && tp->set_swap_xy == NULL) {
uint16_t tmp = x[i];
x[i] = y[i];
y[i] = tmp;
}
}
return touched;
}
#if (CONFIG_ESP_LCD_TOUCH_MAX_BUTTONS > 0)
esp_err_t esp_lcd_touch_get_button_state(esp_lcd_touch_handle_t tp, uint8_t n, uint8_t *state)
{
assert(tp != NULL);
assert(state != NULL);
*state = 0;
if (tp->get_button_state) {
return tp->get_button_state(tp, n, state);
} else {
return ESP_ERR_NOT_SUPPORTED;
}
return ESP_OK;
}
#endif
esp_err_t esp_lcd_touch_set_swap_xy(esp_lcd_touch_handle_t tp, bool swap)
{
assert(tp != NULL);
tp->config.flags.swap_xy = swap;
/* Is swap supported by HW? */
if (tp->set_swap_xy) {
return tp->set_swap_xy(tp, swap);
}
return ESP_OK;
}
esp_err_t esp_lcd_touch_get_swap_xy(esp_lcd_touch_handle_t tp, bool *swap)
{
assert(tp != NULL);
assert(swap != NULL);
/* Is swap supported by HW? */
if (tp->get_swap_xy) {
return tp->get_swap_xy(tp, swap);
} else {
*swap = tp->config.flags.swap_xy;
}
return ESP_OK;
}
esp_err_t esp_lcd_touch_set_mirror_x(esp_lcd_touch_handle_t tp, bool mirror)
{
assert(tp != NULL);
tp->config.flags.mirror_x = mirror;
/* Is mirror supported by HW? */
if (tp->set_mirror_x) {
return tp->set_mirror_x(tp, mirror);
}
return ESP_OK;
}
esp_err_t esp_lcd_touch_get_mirror_x(esp_lcd_touch_handle_t tp, bool *mirror)
{
assert(tp != NULL);
assert(mirror != NULL);
/* Is swap supported by HW? */
if (tp->get_mirror_x) {
return tp->get_mirror_x(tp, mirror);
} else {
*mirror = tp->config.flags.mirror_x;
}
return ESP_OK;
}
esp_err_t esp_lcd_touch_set_mirror_y(esp_lcd_touch_handle_t tp, bool mirror)
{
assert(tp != NULL);
tp->config.flags.mirror_y = mirror;
/* Is mirror supported by HW? */
if (tp->set_mirror_y) {
return tp->set_mirror_y(tp, mirror);
}
return ESP_OK;
}
esp_err_t esp_lcd_touch_get_mirror_y(esp_lcd_touch_handle_t tp, bool *mirror)
{
assert(tp != NULL);
assert(mirror != NULL);
/* Is swap supported by HW? */
if (tp->get_mirror_y) {
return tp->get_mirror_y(tp, mirror);
} else {
*mirror = tp->config.flags.mirror_y;
}
return ESP_OK;
}
esp_err_t esp_lcd_touch_del(esp_lcd_touch_handle_t tp)
{
assert(tp != NULL);
if (tp->del != NULL) {
return tp->del(tp);
}
return ESP_OK;
}
esp_err_t esp_lcd_touch_register_interrupt_callback(esp_lcd_touch_handle_t tp, esp_lcd_touch_interrupt_callback_t callback)
{
esp_err_t ret = ESP_OK;
assert(tp != NULL);
/* Interrupt pin is not selected */
if (tp->config.int_gpio_num == GPIO_NUM_NC) {
return ESP_ERR_INVALID_ARG;
}
tp->config.interrupt_callback = callback;
if (callback != NULL) {
ret = gpio_install_isr_service(0);
/* ISR service can be installed from user before, then it returns invalid state */
if (ret != ESP_OK && ret != ESP_ERR_INVALID_STATE) {
ESP_LOGE(TAG, "GPIO ISR install failed");
return ret;
}
/* Add GPIO ISR handler */
ret = gpio_intr_enable(tp->config.int_gpio_num);
ESP_RETURN_ON_ERROR(ret, TAG, "GPIO ISR install failed");
ret = gpio_isr_handler_add(tp->config.int_gpio_num, (gpio_isr_t)tp->config.interrupt_callback, tp);
ESP_RETURN_ON_ERROR(ret, TAG, "GPIO ISR install failed");
} else {
/* Remove GPIO ISR handler */
ret = gpio_isr_handler_remove(tp->config.int_gpio_num);
ESP_RETURN_ON_ERROR(ret, TAG, "GPIO ISR remove handler failed");
ret = gpio_intr_disable(tp->config.int_gpio_num);
ESP_RETURN_ON_ERROR(ret, TAG, "GPIO ISR disable failed");
}
return ESP_OK;
}
@@ -0,0 +1,413 @@
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief ESP LCD touch
*/
#pragma once
#include <stdbool.h>
#include "sdkconfig.h"
#include "esp_err.h"
#include "driver/gpio.h"
#include "esp_lcd_panel_io.h"
#include "freertos/FreeRTOS.h"
#include "freertos/semphr.h"
#ifdef __cplusplus
extern "C" {
#endif
#define CONFIG_ESP_LCD_TOUCH_MAX_POINTS 2
/**
* @brief Touch controller type
*
*/
typedef struct esp_lcd_touch_s esp_lcd_touch_t;
typedef esp_lcd_touch_t *esp_lcd_touch_handle_t;
/**
* @brief Touch controller interrupt callback type
*
*/
typedef void (*esp_lcd_touch_interrupt_callback_t)(esp_lcd_touch_handle_t tp);
/**
* @brief Touch Configuration Type
*
*/
typedef struct {
uint16_t x_max; /*!< X coordinates max (for mirroring) */
uint16_t y_max; /*!< Y coordinates max (for mirroring) */
gpio_num_t rst_gpio_num; /*!< GPIO number of reset pin */
gpio_num_t int_gpio_num; /*!< GPIO number of interrupt pin */
struct {
unsigned int reset: 1; /*!< Level of reset pin in reset */
unsigned int interrupt: 1;/*!< Active Level of interrupt pin */
} levels;
struct {
unsigned int swap_xy: 1; /*!< Swap X and Y after read coordinates */
unsigned int mirror_x: 1; /*!< Mirror X after read coordinates */
unsigned int mirror_y: 1; /*!< Mirror Y after read coordinates */
} flags;
/*!< User callback called after get coordinates from touch controller for apply user adjusting */
void (*process_coordinates)(esp_lcd_touch_handle_t tp, uint16_t *x, uint16_t *y, uint16_t *strength, uint8_t *point_num, uint8_t max_point_num);
/*!< User callback called after the touch interrupt occured */
esp_lcd_touch_interrupt_callback_t interrupt_callback;
} esp_lcd_touch_config_t;
typedef struct {
uint8_t points; /*!< Count of touch points saved */
struct {
uint16_t x; /*!< X coordinate */
uint16_t y; /*!< Y coordinate */
uint16_t strength; /*!< Strength */
} coords[CONFIG_ESP_LCD_TOUCH_MAX_POINTS];
#if (CONFIG_ESP_LCD_TOUCH_MAX_BUTTONS > 0)
uint8_t buttons; /*!< Count of buttons states saved */
struct {
uint8_t status; /*!< Status of button */
} button[CONFIG_ESP_LCD_TOUCH_MAX_BUTTONS];
#endif
portMUX_TYPE lock; /*!< Lock for read/write */
} esp_lcd_touch_data_t;
/**
* @brief Declare of Touch Type
*
*/
struct esp_lcd_touch_s {
/**
* @brief set touch controller into sleep mode
*
* @note This function is usually blocking.
*
* @param tp: Touch handler
*
* @return
* - ESP_OK on success, otherwise returns ESP_ERR_xxx
*/
esp_err_t (*enter_sleep)(esp_lcd_touch_handle_t tp);
/**
* @brief set touch controller into normal mode
*
* @note This function is usually blocking.
*
* @param tp: Touch handler
*
* @return
* - ESP_OK on success, otherwise returns ESP_ERR_xxx
*/
esp_err_t (*exit_sleep)(esp_lcd_touch_handle_t tp);
/**
* @brief Read data from touch controller (mandatory)
*
* @note This function is usually blocking.
*
* @param tp: Touch handler
*
* @return
* - ESP_OK on success, otherwise returns ESP_ERR_xxx
*/
esp_err_t (*read_data)(esp_lcd_touch_handle_t tp);
/**
* @brief Get coordinates from touch controller (mandatory)
*
* @param tp: Touch handler
* @param x: Array of X coordinates
* @param y: Array of Y coordinates
* @param strength: Array of strengths
* @param point_num: Count of points touched (equals with count of items in x and y array)
* @param max_point_num: Maximum count of touched points to return (equals with max size of x and y array)
*
* @return
* - Returns true, when touched and coordinates readed. Otherwise returns false.
*/
bool (*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);
#if (CONFIG_ESP_LCD_TOUCH_MAX_BUTTONS > 0)
/**
* @brief Get button state (optional)
*
* @param tp: Touch handler
* @param n: Button index
* @param state: Button state
*
* @return
* - Returns true, when touched and coordinates readed. Otherwise returns false.
*/
esp_err_t (*get_button_state)(esp_lcd_touch_handle_t tp, uint8_t n, uint8_t *state);
#endif
/**
* @brief Swap X and Y after read coordinates (optional)
* If set, then not used SW swapping.
*
* @param tp: Touch handler
* @param swap: Set swap value
*
* @return
* - ESP_OK on success, otherwise returns ESP_ERR_xxx
*/
esp_err_t (*set_swap_xy)(esp_lcd_touch_handle_t tp, bool swap);
/**
* @brief Are X and Y coordinates swapped (optional)
*
* @param tp: Touch handler
* @param swap: Get swap value
*
* @return
* - ESP_OK on success, otherwise returns ESP_ERR_xxx
*/
esp_err_t (*get_swap_xy)(esp_lcd_touch_handle_t tp, bool *swap);
/**
* @brief Mirror X after read coordinates
* If set, then not used SW mirroring.
*
* @param tp: Touch handler
* @param mirror: Set X mirror value
*
* @return
* - ESP_OK on success, otherwise returns ESP_ERR_xxx
*/
esp_err_t (*set_mirror_x)(esp_lcd_touch_handle_t tp, bool mirror);
/**
* @brief Is mirrored X (optional)
*
* @param tp: Touch handler
* @param mirror: Get X mirror value
*
* @return
* - ESP_OK on success, otherwise returns ESP_ERR_xxx
*/
esp_err_t (*get_mirror_x)(esp_lcd_touch_handle_t tp, bool *mirror);
/**
* @brief Mirror Y after read coordinates
* If set, then not used SW mirroring.
*
* @param tp: Touch handler
* @param mirror: Set Y mirror value
*
* @return
* - ESP_OK on success, otherwise returns ESP_ERR_xxx
*/
esp_err_t (*set_mirror_y)(esp_lcd_touch_handle_t tp, bool mirror);
/**
* @brief Is mirrored Y (optional)
*
* @param tp: Touch handler
* @param mirror: Get Y mirror value
*
* @return
* - ESP_OK on success, otherwise returns ESP_ERR_xxx
*/
esp_err_t (*get_mirror_y)(esp_lcd_touch_handle_t tp, bool *mirror);
/**
* @brief Delete Touch
*
* @param tp: Touch handler
*
* @return
* - ESP_OK on success, otherwise returns ESP_ERR_xxx
*/
esp_err_t (*del)(esp_lcd_touch_handle_t tp);
/**
* @brief Configuration structure
*/
esp_lcd_touch_config_t config;
/**
* @brief Communication interface
*/
esp_lcd_panel_io_handle_t io;
/**
* @brief Data structure
*/
esp_lcd_touch_data_t data;
};
/**
* @brief Read data from touch controller
*
* @note This function is usually blocking.
*
* @param tp: Touch handler
*
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG parameter error
* - ESP_FAIL sending command error, slave hasn't ACK the transfer
* - ESP_ERR_INVALID_STATE I2C driver not installed or not in master mode
* - ESP_ERR_TIMEOUT operation timeout because the bus is busy
*/
esp_err_t esp_lcd_touch_read_data(esp_lcd_touch_handle_t tp);
/**
* @brief Read coordinates from touch controller
*
* @param tp: Touch handler
* @param x: Array of X coordinates
* @param y: Array of Y coordinates
* @param strength: Array of the strengths (can be NULL)
* @param point_num: Count of points touched (equals with count of items in x and y array)
* @param max_point_num: Maximum count of touched points to return (equals with max size of x and y array)
*
* @return
* - Returns true, when touched and coordinates readed. Otherwise returns false.
*/
bool esp_lcd_touch_get_coordinates(esp_lcd_touch_handle_t tp, uint16_t *x, uint16_t *y, uint16_t *strength, uint8_t *point_num, uint8_t max_point_num);
#if (CONFIG_ESP_LCD_TOUCH_MAX_BUTTONS > 0)
/**
* @brief Get button state
*
* @param tp: Touch handler
* @param n: Button index
* @param state: Button state
*
* @return
* - ESP_OK on success
* - ESP_ERR_NOT_SUPPORTED if this function is not supported by controller
* - ESP_ERR_INVALID_ARG if bad button index
*/
esp_err_t esp_lcd_touch_get_button_state(esp_lcd_touch_handle_t tp, uint8_t n, uint8_t *state);
#endif
/**
* @brief Swap X and Y after read coordinates
*
* @param tp: Touch handler
* @param swap: Set swap value
*
* @return
* - ESP_OK on success
*/
esp_err_t esp_lcd_touch_set_swap_xy(esp_lcd_touch_handle_t tp, bool swap);
/**
* @brief Are X and Y coordinates swapped
*
* @param tp: Touch handler
* @param swap: Get swap value
*
* @return
* - ESP_OK on success
*/
esp_err_t esp_lcd_touch_get_swap_xy(esp_lcd_touch_handle_t tp, bool *swap);
/**
* @brief Mirror X after read coordinates
*
* @param tp: Touch handler
* @param mirror: Set X mirror value
*
* @return
* - ESP_OK on success
*/
esp_err_t esp_lcd_touch_set_mirror_x(esp_lcd_touch_handle_t tp, bool mirror);
/**
* @brief Is mirrored X
*
* @param tp: Touch handler
* @param mirror: Get X mirror value
*
* @return
* - ESP_OK on success
*/
esp_err_t esp_lcd_touch_get_mirror_x(esp_lcd_touch_handle_t tp, bool *mirror);
/**
* @brief Mirror Y after read coordinates
*
* @param tp: Touch handler
* @param mirror: Set Y mirror value
*
* @return
* - ESP_OK on success
*/
esp_err_t esp_lcd_touch_set_mirror_y(esp_lcd_touch_handle_t tp, bool mirror);
/**
* @brief Is mirrored Y
*
* @param tp: Touch handler
* @param mirror: Get Y mirror value
*
* @return
* - ESP_OK on success
*/
esp_err_t esp_lcd_touch_get_mirror_y(esp_lcd_touch_handle_t tp, bool *mirror);
/**
* @brief Delete touch (free all allocated memory and restart HW)
*
* @param tp: Touch handler
*
* @return
* - ESP_OK on success
*/
esp_err_t esp_lcd_touch_del(esp_lcd_touch_handle_t tp);
/**
* @brief Register user callback called after the touch interrupt occured
*
* @param tp: Touch handler
* @param callback: Interrupt callback
*
* @return
* - ESP_OK on success
*/
esp_err_t esp_lcd_touch_register_interrupt_callback(esp_lcd_touch_handle_t tp, esp_lcd_touch_interrupt_callback_t callback);
/**
* @brief Enter sleep mode
*
* @param tp: Touch handler
*
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if parameter is invalid
*/
esp_err_t esp_lcd_touch_enter_sleep(esp_lcd_touch_handle_t tp);
/**
* @brief Exit sleep mode
*
* @param tp: Touch handler
*
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if parameter is invalid
*/
esp_err_t esp_lcd_touch_exit_sleep(esp_lcd_touch_handle_t tp);
#ifdef __cplusplus
}
#endif