板子：stm32f407zgt6
屏幕：浦阳1.69触摸屏（该款触摸屏幕显示芯片为：ST7789。触摸芯片为：CST816）
教程：正点原子移植教程。
一、踩坑点
启动文件的stack_size要由0x400改为0x800,否则demo会白屏
lv_task_tc()可以放在一个定时器中断函数中，每5ms进入一次中断。
关键是修改lv_port_disp_template.c和lv_port_indev_template.c
lv_port_disp_template.c
/*** @file lv_port_disp_templ.c**//*Copy this file as "lv_port_disp.c" and set this value to "1" to enable content*/
#if 1/********************** INCLUDES*********************/
#include "lv_port_disp_template.h"
#include "../../lvgl.h"
#include "lcd.h"
#include "lcd_init.h"/********************** DEFINES*********************//*********************** TYPEDEFS**********************//*********************** STATIC PROTOTYPES**********************/
static void disp_init(void);static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p);
//static void gpu_fill(lv_disp_drv_t * disp_drv, lv_color_t * dest_buf, lv_coord_t dest_width,
// const lv_area_t * fill_area, lv_color_t color);/*********************** STATIC VARIABLES**********************//*********************** MACROS**********************//*********************** GLOBAL FUNCTIONS**********************/void lv_port_disp_init(void)
{/*-------------------------* Initialize your display* -----------------------*/disp_init();/*-----------------------------* Create a buffer for drawing*----------------------------*//* Example for 1) */static lv_disp_draw_buf_t draw_buf_dsc_1;static lv_color_t buf_1[LCD_W * 150]; /*A buffer for 10 rows*/lv_disp_draw_buf_init(&draw_buf_dsc_1, buf_1, NULL, LCD_W* 150); /*Initialize the display buffer*//* Example for 2) */
// static lv_disp_draw_buf_t draw_buf_dsc_2;
// static lv_color_t buf_2_1[MY_DISP_HOR_RES * 10]; /*A buffer for 10 rows*/
// static lv_color_t buf_2_2[MY_DISP_HOR_RES * 10]; /*An other buffer for 10 rows*/
// lv_disp_draw_buf_init(&draw_buf_dsc_2, buf_2_1, buf_2_2, MY_DISP_HOR_RES * 10); /*Initialize the display buffer*//* Example for 3) also set disp_drv.full_refresh = 1 below*/
// static lv_disp_draw_buf_t draw_buf_dsc_3;
// static lv_color_t buf_3_1[MY_DISP_HOR_RES * MY_DISP_VER_RES]; /*A screen sized buffer*/
// static lv_color_t buf_3_2[MY_DISP_HOR_RES * MY_DISP_VER_RES]; /*Another screen sized buffer*/
// lv_disp_draw_buf_init(&draw_buf_dsc_3, buf_3_1, buf_3_2, MY_DISP_VER_RES * LV_VER_RES_MAX); /*Initialize the display buffer*//*-----------------------------------* Register the display in LVGL*----------------------------------*/static lv_disp_drv_t disp_drv; /*Descriptor of a display driver*/lv_disp_drv_init(&disp_drv); /*Basic initialization*//*Set up the functions to access to your display*//*Set the resolution of the display*/disp_drv.hor_res = LCD_W;disp_drv.ver_res = LCD_H;/*Used to copy the buffer's content to the display*/disp_drv.flush_cb = disp_flush;/*Set a display buffer*/disp_drv.draw_buf = &draw_buf_dsc_1;/*Required for Example 3)*///disp_drv.full_refresh = 1/* Fill a memory array with a color if you have GPU.* Note that, in lv_conf.h you can enable GPUs that has built-in support in LVGL.* But if you have a different GPU you can use with this callback.*///disp_drv.gpu_fill_cb = gpu_fill;/*Finally register the driver*/lv_disp_drv_register(&disp_drv);
}/*********************** STATIC FUNCTIONS**********************//*Initialize your display and the required peripherals.*/
static void disp_init(void)
{LCD_Init();
}/*Flush the content of the internal buffer the specific area on the display*You can use DMA or any hardware acceleration to do this operation in the background but*'lv_disp_flush_ready()' has to be called when finished.*/
static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
{LCD_Color_Fill(area->x1, area->y1, area->x2, area->y2,(u16*)color_p);lv_disp_flush_ready(disp_drv);
}/*OPTIONAL: GPU INTERFACE*//*If your MCU has hardware accelerator (GPU) then you can use it to fill a memory with a color*/
//static void gpu_fill(lv_disp_drv_t * disp_drv, lv_color_t * dest_buf, lv_coord_t dest_width,
// const lv_area_t * fill_area, lv_color_t color)
//{
// /*It's an example code which should be done by your GPU*/
// int32_t x, y;
// dest_buf += dest_width * fill_area->y1; /*Go to the first line*/
//
// for(y = fill_area->y1; y <= fill_area->y2; y++) {
// for(x = fill_area->x1; x <= fill_area->x2; x++) {
// dest_buf[x] = color;
// }
// dest_buf+=dest_width; /*Go to the next line*/
// }
//}#else /*Enable this file at the top*//*This dummy typedef exists purely to silence -Wpedantic.*/
typedef int keep_pedantic_happy;
#endiflv_port_indev_template.c
/*** @file lv_port_indev_templ.c**//*Copy this file as "lv_port_indev.c" and set this value to "1" to enable content*/
#if 1/********************** INCLUDES*********************/
#include "lv_port_indev_template.h"
#include "lvgl.h"
#include "CST816.h"/********************** DEFINES*********************//*********************** TYPEDEFS**********************//*********************** STATIC PROTOTYPES**********************/static void touchpad_init(void);
static void touchpad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
static bool touchpad_is_pressed(void);
static void touchpad_get_xy(lv_coord_t * x, lv_coord_t * y);/*********************** STATIC VARIABLES**********************/
lv_indev_t * indev_touchpad;
extern CST816_Info CST816_Instance;/*********************** MACROS**********************//*********************** GLOBAL FUNCTIONS**********************/void lv_port_indev_init(void)
{/*** Here you will find example implementation of input devices supported by LittelvGL:* - Touchpad* - Mouse (with cursor support)* - Keypad (supports GUI usage only with key)* - Encoder (supports GUI usage only with: left, right, push)* - Button (external buttons to press points on the screen)** The `..._read()` function are only examples.* You should shape them according to your hardware*/static lv_indev_drv_t indev_drv;/*------------------* Touchpad* -----------------*//*Initialize your touchpad if you have*/touchpad_init();/*Register a touchpad input device*/lv_indev_drv_init(&indev_drv);indev_drv.type = LV_INDEV_TYPE_POINTER;indev_drv.read_cb = touchpad_read;indev_touchpad = lv_indev_drv_register(&indev_drv);}/*********************** STATIC FUNCTIONS**********************//*------------------* Touchpad* -----------------*//*Initialize your touchpad*/
static void touchpad_init(void)
{/*Your code comes here*/CST816_Init();CST816_RESET();
}/*Will be called by the library to read the touchpad*/
static void touchpad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
{static lv_coord_t last_x = 0;static lv_coord_t last_y = 0;/*Save the pressed coordinates and the state*/if(touchpad_is_pressed()) {touchpad_get_xy(&last_x, &last_y);data->state = LV_INDEV_STATE_PR;} else {data->state = LV_INDEV_STATE_REL;}/*Set the last pressed coordinates*/data->point.x = last_x;data->point.y = last_y;
}/*Return true is the touchpad is pressed*/
static bool touchpad_is_pressed(void)
{/*Your code comes here*/if(CST816_Get_FingerNum()!=0x00 && CST816_Get_FingerNum()!=0xFF){return true;}else{return false;}
}/*Get the x and y coordinates if the touchpad is pressed*/
static void touchpad_get_xy(lv_coord_t * x, lv_coord_t * y)
{/*Your code comes here*/CST816_Get_XY_AXIS();(*x) = CST816_Instance.X_Pos;(*y) = CST816_Instance.Y_Pos;
}#else /*Enable this file at the top*//*This dummy typedef exists purely to silence -Wpedantic.*/
typedef int keep_pedantic_happy;
#endif
