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Tasmota/tasmota/tasmota_xdrv_driver/xdrv_54_lvgl.ino

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/*
xdrv_54_lvgl.ino - LVLG integration
Copyright (C) 2021 Stephan Hadinger, Berry language by Guan Wenliang https://github.com/Skiars/berry
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef ESP32
#if defined(USE_LVGL) && defined(USE_UNIVERSAL_DISPLAY)
#include <renderer.h>
#include "lvgl.h"
#include "tasmota_lvgl_assets.h" // force compilation of assets
#define XDRV_54 54
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
struct LVGL_Glue {
lv_display_t *lv_display = nullptr;
lv_indev_t *lv_indev = nullptr;
void *lv_pixel_buf = nullptr;
void *lv_pixel_buf2 = nullptr;
Ticker tick;
File * screenshot = nullptr;
};
LVGL_Glue * lvgl_glue;
// **************************************************
// Logging
// **************************************************
#if LV_USE_LOG
#ifdef USE_BERRY
static void lvbe_debug(lv_log_level_t, const char *msg);
static void lvbe_debug(lv_log_level_t, const char *msg) {
be_writebuffer("LVG: ", sizeof("LVG: "));
be_writebuffer(msg, strlen(msg));
}
#endif
#endif
/************************************************************
* Main screen refresh function
************************************************************/
// This is the flush function required for LittlevGL screen updates.
// It receives a bounding rect and an array of pixel data (conveniently
// already in 565 format, so the Earth was lucky there).
void lv_flush_callback(lv_display_t *disp, const lv_area_t *area, uint8_t *color_p);
void lv_flush_callback(lv_display_t *disp, const lv_area_t *area, uint8_t *color_p) {
uint16_t width = (area->x2 - area->x1 + 1);
uint16_t height = (area->y2 - area->y1 + 1);
// check if we are currently doing a screenshot
if (lvgl_glue->screenshot != nullptr) {
// save pixels to file
int32_t btw = (width * height * LV_COLOR_DEPTH + 7) / 8;
yield(); // ensure WDT does not fire
while (btw > 0) {
if (btw > 0) { // if we had a previous error (ex disk full) don't try to write anymore
int32_t ret = lvgl_glue->screenshot->write((const uint8_t*) color_p, btw);
if (ret >= 0) {
btw -= ret;
} else {
btw = 0; // abort
}
}
}
lv_disp_flush_ready(disp);
return; // ok
}
uint32_t pixels_len = width * height;
uint32_t chrono_start = millis();
renderer->setAddrWindow(area->x1, area->y1, area->x1+width, area->y1+height);
renderer->pushColors((uint16_t *)color_p, pixels_len, true);
renderer->setAddrWindow(0,0,0,0);
uint32_t chrono_time = millis() - chrono_start;
lv_disp_flush_ready(disp);
if (pixels_len >= 10000 && (!renderer->lvgl_param.use_dma)) {
if (HighestLogLevel() >= LOG_LEVEL_DEBUG_MORE) {
AddLog(LOG_LEVEL_DEBUG_MORE, D_LOG_LVGL "Refreshed %d pixels in %d ms (%i pix/ms)", pixels_len, chrono_time,
chrono_time > 0 ? pixels_len / chrono_time : -1);
}
}
}
/************************************************************
* Emulation of stdio for FreeType
*
************************************************************/
#ifdef USE_UFILESYS
#include <FS.h>
#include "ZipReadFS.h"
extern FS *ffsp;
extern FS *ufsp;
FS lv_zip_ufsp(ZipReadFSImplPtr(new ZipReadFSImpl(&ffsp, "/sd/", &ufsp)));
extern "C" {
typedef void lvbe_FILE;
// FILE * fopen ( const char * filename, const char * mode );
lvbe_FILE * lvbe_fopen(const char * filename, const char * mode ) {
// Add "/" prefix
String file_path = "/";
file_path += filename;
File f = lv_zip_ufsp.open(file_path, mode);
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fopen(%s) -> %i", file_path.c_str(), (int32_t)f);
// AddLog(LOG_LEVEL_INFO, "LVG: F=%*_H", sizeof(f), &f);
if (f) {
File * f_ptr = new File(f); // copy to dynamic object
*f_ptr = f; // TODO is this necessary?
return f_ptr;
}
return nullptr;
}
// int fclose ( FILE * stream );
int lvbe_fclose(lvbe_FILE * stream) {
File * f_ptr = (File*) stream;
f_ptr->close();
delete f_ptr;
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fclose(%p)", f_ptr);
return 0;
}
// size_t fread ( void * ptr, size_t size, size_t count, FILE * stream );
size_t lvbe_fread(void * ptr, size_t size, size_t count, lvbe_FILE * stream) {
File * f_ptr = (File*) stream;
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fread (%p, %i, %i, %p)", ptr, size, count, f_ptr);
int32_t ret = f_ptr->read((uint8_t*) ptr, size * count);
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fread -> %i", ret);
if (ret < 0) { // error
ret = 0;
}
return ret;
}
// int fseek ( FILE * stream, long int offset, int origin );
int lvbe_fseek(lvbe_FILE * stream, long int offset, int origin ) {
File * f_ptr = (File*) stream;
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fseek(%p, %i, %i)", f_ptr, offset, origin);
fs::SeekMode mode = fs::SeekMode::SeekSet;
if (SEEK_CUR == origin) {
mode = fs::SeekMode::SeekCur;
} else if (SEEK_END == origin) {
mode = fs::SeekMode::SeekEnd;
}
bool ok = f_ptr->seek(offset, mode);
return ok ? 0 : -1;
}
// long int ftell ( FILE * stream );
int lvbe_ftell(lvbe_FILE * stream) {
File * f_ptr = (File*) stream;
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_ftell(%p) -> %i", f_ptr, f_ptr->position());
return f_ptr->position();
}
}
#endif // USE_UFILESYS
/************************************************************
* Callbacks for file system access from LVGL
*
* Useful to load fonts or images from file system
************************************************************/
#ifdef USE_UFILESYS
static void * lvbe_fs_open(lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode);
static void * lvbe_fs_open(lv_fs_drv_t * drv, const char * path, lv_fs_mode_t mode) {
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fs_open(%p, %p, %s, %i) %i", drv, file_p, path, mode, sizeof(File));
const char * modes = nullptr;
switch (mode) {
case LV_FS_MODE_WR: modes = "w"; break;
case LV_FS_MODE_RD: modes = "r"; break;
case LV_FS_MODE_WR | LV_FS_MODE_RD: modes = "rw"; break;
}
if (modes == nullptr) {
AddLog(LOG_LEVEL_INFO, "LVG: fs_open, unsupported mode %d", mode);
return nullptr;
}
return (void*) lvbe_fopen(path, modes);
}
static lv_fs_res_t lvbe_fs_close(lv_fs_drv_t * drv, void * file_p);
static lv_fs_res_t lvbe_fs_close(lv_fs_drv_t * drv, void * file_p) {
return lvbe_fclose((void*)file_p);
}
static lv_fs_res_t lvbe_fs_read(lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
static lv_fs_res_t lvbe_fs_read(lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br) {
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fs_read(%p, %p, %p, %i, %p)", drv, file_p, buf, btr, br);
File * f_ptr = (File*) file_p;
// AddLog(LOG_LEVEL_INFO, "LVG: F=%*_H", sizeof(File), f_ptr);
int32_t ret = f_ptr->read((uint8_t*) buf, btr);
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fs_read -> %i", ret);
if (ret >= 0) {
*br = ret;
return LV_FS_RES_OK;
} else {
return LV_FS_RES_UNKNOWN;
}
}
static lv_fs_res_t lvbe_fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
static lv_fs_res_t lvbe_fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw) {
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fs_write(%p, %p, %p, %i, %p)", drv, file_p, buf, btw, bw);
File * f_ptr = (File*) file_p;
int32_t ret = f_ptr->write((const uint8_t*) buf, btw);
if (ret >= 0) {
*bw = ret;
return LV_FS_RES_OK;
} else {
return LV_FS_RES_UNKNOWN;
}
}
static lv_fs_res_t lvbe_fs_tell(lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
static lv_fs_res_t lvbe_fs_tell(lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p) {
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fs_tell(%p, %p, %p)", drv, file_p, pos_p);
File * f_ptr = (File*) file_p;
*pos_p = f_ptr->position();
return LV_FS_RES_OK;
}
static lv_fs_res_t lvbe_fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence);
static lv_fs_res_t lvbe_fs_seek(lv_fs_drv_t * drv, void * file_p, uint32_t pos, lv_fs_whence_t whence) {
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fs_seek(%p, %p, %i)", drv, file_p, pos);
File * f_ptr = (File*) file_p;
SeekMode seek;
switch (whence) {
case LV_FS_SEEK_SET: seek = SeekSet; break;
case LV_FS_SEEK_CUR: seek = SeekCur; break;
case LV_FS_SEEK_END: seek = SeekEnd; break;
default: return LV_FS_RES_UNKNOWN;
}
if (f_ptr->seek(pos, seek)) {
return LV_FS_RES_OK;
} else {
return LV_FS_RES_UNKNOWN;
}
}
static lv_fs_res_t lvbe_fs_size(lv_fs_drv_t * drv, void * file_p, uint32_t * size_p);
static lv_fs_res_t lvbe_fs_size(lv_fs_drv_t * drv, void * file_p, uint32_t * size_p) {
// AddLog(LOG_LEVEL_INFO, "LVG: lvbe_fs_size(%p, %p, %p)", drv, file_p, size_p);
File * f_ptr = (File*) file_p;
*size_p = f_ptr->size();
return LV_FS_RES_OK;
}
#endif // USE_UFILESYS
/*********************************************************************************************\
* Memory handler
* Use PSRAM if available
\*********************************************************************************************/
extern "C" {
/*
Use the following
extern void *lvbe_malloc(size_t size);
extern void lvbe_free(void *ptr);
extern void *lvbe_realloc(void *ptr, size_t size);
extern void *lvbe_calloc(size_t num, size_t size);
*/
void *lvbe_malloc(uint32_t size);
void *lvbe_realloc(void *ptr, size_t size);
void *lvbe_calloc(size_t num, size_t size);
#ifdef USE_BERRY_PSRAM
void *lvbe_malloc(uint32_t size) {
return special_malloc(size);
}
void *lvbe_realloc(void *ptr, size_t size) {
return special_realloc(ptr, size);
}
void *lvbe_calloc(size_t num, size_t size) {
return special_calloc(num, size);
}
#else // USE_BERRY_PSRAM
void *lvbe_malloc(uint32_t size) {
return malloc(size);
}
void *lvbe_realloc(void *ptr, size_t size) {
return realloc(ptr, size);
}
void *lvbe_calloc(size_t num, size_t size) {
return calloc(num, size);
}
#endif // USE_BERRY_PSRAM
void lvbe_free(void *ptr) {
free(ptr);
}
#ifdef USE_LVGL_PNG_DECODER
// for PNG decoder, use same allocators as LVGL
void* lodepng_malloc(size_t size) { return lvbe_malloc(size); }
void* lodepng_realloc(void* ptr, size_t new_size) { return lvbe_realloc(ptr, new_size); }
void lodepng_free(void* ptr) { lvbe_free(ptr); }
#endif // USE_LVGL_PNG_DECODER
}
// ARCHITECTURE-SPECIFIC TIMER STUFF ---------------------------------------
extern void lv_flush_callback(lv_display_t *disp, const lv_area_t *area, uint8_t * px_map);
// Tick interval for LittlevGL internal timekeeping; 1 to 10 ms recommended
static const int lv_tick_interval_ms = 5;
static void lv_tick_handler(void) { lv_tick_inc(lv_tick_interval_ms); }
// TOUCHSCREEN STUFF -------------------------------------------------------
uint32_t Touch_Status(int32_t sel);
//typedef void (*lv_indev_read_cb_t)(lv_indev_t * indev, lv_indev_data_t * data);
void lvgl_touchscreen_read(lv_indev_t *indev_drv, lv_indev_data_t *data);
void lvgl_touchscreen_read(lv_indev_t *indev_drv, lv_indev_data_t *data) {
data->point.x = Touch_Status(1); // Last-pressed coordinates
data->point.y = Touch_Status(2);
data->state = Touch_Status(0) ? LV_INDEV_STATE_PRESSED : LV_INDEV_STATE_RELEASED;
data->continue_reading = false; /*No buffering now so no more data read*/
// keep data for TS calibration
lv_ts_calibration.state = data->state;
if (data->state == LV_INDEV_STATE_PRESSED) { // if not pressed, the data may be invalid
lv_ts_calibration.x = data->point.x;
lv_ts_calibration.y = data->point.y;
lv_ts_calibration.raw_x = Touch_Status(-1);
lv_ts_calibration.raw_y = Touch_Status(-2);
}
}
// Actual RAM usage will be 2X these figures, since using 2 DMA buffers...
#define LV_BUFFER_ROWS 60 // Most others have a bit more space
/************************************************************
* Initialize the display / touchscreen drivers then launch lvgl
*
* We use our own simplified mapping on top of Universal display
************************************************************/
extern Renderer *Init_uDisplay(const char *desc);
void start_lvgl(const char * uconfig);
void start_lvgl(const char * uconfig) {
if (lvgl_glue != nullptr) {
AddLog(LOG_LEVEL_DEBUG, D_LOG_LVGL "LVGL was already initialized");
return;
}
if (!renderer || uconfig) {
renderer = Init_uDisplay((char*)uconfig);
AddLog(LOG_LEVEL_ERROR, "LVG: Could not start Universal Display");
if (!renderer) return;
}
renderer->DisplayOnff(true);
// **************************************************
// Initialize LVGL
// **************************************************
lvgl_glue = new LVGL_Glue;
// Initialize lvgl_glue, passing in address of display & touchscreen
lv_init();
// Allocate LvGL display buffer (x2 because DMA double buffering)
bool status_ok = true;
size_t lvgl_buffer_size;
do {
uint32_t flushlines = renderer->lvgl_pars()->flushlines;
if (0 == flushlines) flushlines = LV_BUFFER_ROWS;
lvgl_buffer_size = renderer->width() * flushlines;
if (renderer->lvgl_pars()->use_dma) {
lvgl_buffer_size /= 2;
if (lvgl_buffer_size < 1000000) {
// allocate preferably in internal memory which is faster than PSRAM
AddLog(LOG_LEVEL_DEBUG, "LVG: Allocating buffer2 %i bytes in main memory (flushlines %i)", (lvgl_buffer_size * (LV_COLOR_DEPTH / 8)) / 1024, flushlines);
lvgl_glue->lv_pixel_buf2 = heap_caps_malloc_prefer(lvgl_buffer_size * (LV_COLOR_DEPTH / 8), 2, MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL, MALLOC_CAP_8BIT);
}
if (!lvgl_glue->lv_pixel_buf2) {
status_ok = false;
break;
}
}
// allocate preferably in internal memory which is faster than PSRAM
AddLog(LOG_LEVEL_DEBUG, "LVG: Allocating buffer1 %i KB in main memory (flushlines %i)", (lvgl_buffer_size * (LV_COLOR_DEPTH / 8)) / 1024, flushlines);
lvgl_glue->lv_pixel_buf = heap_caps_malloc_prefer(lvgl_buffer_size * (LV_COLOR_DEPTH / 8), 2, MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL, MALLOC_CAP_8BIT);
if (!lvgl_glue->lv_pixel_buf) {
status_ok = false;
break;
}
} while (0);
if (!status_ok) {
if (lvgl_glue->lv_pixel_buf) {
free(lvgl_glue->lv_pixel_buf);
lvgl_glue->lv_pixel_buf = NULL;
}
if (lvgl_glue->lv_pixel_buf2) {
free(lvgl_glue->lv_pixel_buf2);
lvgl_glue->lv_pixel_buf2 = NULL;
}
delete lvgl_glue;
lvgl_glue = nullptr;
AddLog(LOG_LEVEL_ERROR, "LVG: Could not allocate buffers");
return;
}
// Initialize LvGL display driver
lvgl_glue->lv_display = lv_display_create(renderer->width(), renderer->height());
lv_display_set_flush_cb(lvgl_glue->lv_display, lv_flush_callback);
lv_display_set_buffers(lvgl_glue->lv_display, lvgl_glue->lv_pixel_buf, lvgl_glue->lv_pixel_buf2, lvgl_buffer_size * (LV_COLOR_DEPTH / 8), LV_DISPLAY_RENDER_MODE_PARTIAL);
// Initialize LvGL input device (touchscreen already started)
lvgl_glue->lv_indev = lv_indev_create();
lv_indev_set_type(lvgl_glue->lv_indev, LV_INDEV_TYPE_POINTER);
lv_indev_set_read_cb(lvgl_glue->lv_indev, lvgl_touchscreen_read);
// ESP 32------------------------------------------------
lvgl_glue->tick.attach_ms(lv_tick_interval_ms, lv_tick_handler);
// -----------------------------------------
// Set the default background color of the display
// This is normally overriden by an opaque screen on top
#ifdef USE_BERRY
// By default set the display color to black and opacity to 100%
lv_obj_t * background = lv_layer_bottom();
lv_obj_set_style_bg_color(background, lv_color_hex(USE_LVGL_BG_DEFAULT), static_cast<uint32_t>(LV_PART_MAIN) | static_cast<uint32_t>(LV_STATE_DEFAULT));
lv_obj_set_style_bg_opa(background, LV_OPA_COVER, static_cast<uint32_t>(LV_PART_MAIN) | static_cast<uint32_t>(LV_STATE_DEFAULT));
// lv_disp_set_bg_color(NULL, lv_color_from_uint32(USE_LVGL_BG_DEFAULT));
// lv_disp_set_bg_opa(NULL, LV_OPA_COVER);
lv_obj_set_style_bg_color(lv_screen_active(), lv_color_hex(USE_LVGL_BG_DEFAULT), static_cast<uint32_t>(LV_PART_MAIN) | static_cast<uint32_t>(LV_STATE_DEFAULT));
lv_obj_set_style_bg_opa(lv_screen_active(), LV_OPA_COVER, static_cast<uint32_t>(LV_PART_MAIN) | static_cast<uint32_t>(LV_STATE_DEFAULT));
#if LV_USE_LOG
lv_log_register_print_cb(lvbe_debug);
#endif // LV_USE_LOG
#endif
#ifdef USE_UFILESYS
// Add file system mapping
static lv_fs_drv_t drv; // LVGL8, needs to be static and not on stack
lv_fs_drv_init(&drv); /*Basic initialization*/
drv.letter = 'A'; /*An uppercase letter to identify the drive */
drv.ready_cb = nullptr; /*Callback to tell if the drive is ready to use */
drv.open_cb = &lvbe_fs_open; /*Callback to open a file */
drv.close_cb = &lvbe_fs_close; /*Callback to close a file */
drv.read_cb = &lvbe_fs_read; /*Callback to read a file */
drv.write_cb = &lvbe_fs_write; /*Callback to write a file */
drv.seek_cb = &lvbe_fs_seek; /*Callback to seek in a file (Move cursor) */
drv.tell_cb = &lvbe_fs_tell; /*Callback to tell the cursor position */
drv.dir_open_cb = nullptr; /*Callback to open directory to read its content */
drv.dir_read_cb = nullptr; /*Callback to read a directory's content */
drv.dir_close_cb = nullptr; /*Callback to close a directory */
// drv.user_data = nullptr; /*Any custom data if required*/
lv_fs_drv_register(&drv); /*Finally register the drive*/
#endif // USE_UFILESYS
#ifdef USE_LVGL_FREETYPE
// initialize the FreeType renderer
lv_freetype_init(USE_LVGL_FREETYPE_MAX_FACES);
// lv_freetype_init(USE_LVGL_FREETYPE_MAX_FACES,
// USE_LVGL_FREETYPE_MAX_SIZES,
// UsePSRAM() ? USE_LVGL_FREETYPE_MAX_BYTES_PSRAM : USE_LVGL_FREETYPE_MAX_BYTES);
#endif
#ifdef USE_LVGL_PNG_DECODER
lv_lodepng_init();
#endif // USE_LVGL_PNG_DECODER
// TODO check later about cache size
if (UsePSRAM()) {
lv_cache_set_max_size(LV_GLOBAL_DEFAULT()->img_cache, LV_IMG_CACHE_DEF_SIZE_PSRAM, nullptr);
} else {
lv_cache_set_max_size(LV_GLOBAL_DEFAULT()->img_cache, LV_IMG_CACHE_DEF_SIZE_NOPSRAM, nullptr);
}
AddLog(LOG_LEVEL_INFO, PSTR(D_LOG_LVGL "LVGL initialized"));
}
/*********************************************************************************************\
* Callable from Berry
\*********************************************************************************************/
bool lvgl_started(void);
bool lvgl_started(void) {
return (lvgl_glue != nullptr);
}
void lvgl_set_screenshot_file(File * file);
void lvgl_set_screenshot_file(File * file) {
lvgl_glue->screenshot = file;
}
void lvgl_reset_screenshot_file(void);
void lvgl_reset_screenshot_file(void) {
lvgl_glue->screenshot = nullptr;
}
File * lvgl_get_screenshot_file(void);
File * lvgl_get_screenshot_file(void) {
return lvgl_glue->screenshot;
}
/*********************************************************************************************\
* Interface
\*********************************************************************************************/
bool Xdrv54(uint32_t function) {
bool result = false;
switch (function) {
case FUNC_LOOP:
if (lvgl_glue) {
if (TasmotaGlobal.sleep > USE_LVGL_MAX_SLEEP) {
TasmotaGlobal.sleep = USE_LVGL_MAX_SLEEP; // sleep is max 10ms
}
lv_task_handler();
}
break;
case FUNC_ACTIVE:
result = true;
break;
}
return result;
}
#endif // defined(USE_LVGL) && defined(USE_UNIVERSAL_DISPLAY)
#endif // ESP32
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