zenermerps/lvgl_esp32_drivers
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Clean up example with buffer copy

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This commit is contained in:
martinberlin 2021-06-11 15:14:47 +02:00
parent c539322a36
commit cd28318973
1 changed files with 20 additions and 39 deletions
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59
lvgl_tft/epdiy_epaper_v2.cpp
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@ -1,21 +1,13 @@
#include "esp_log.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "epdiy_epaper.h"
#include "epd_driver.h"
#include "epd_highlevel.h"
// Usable size
#include <malloc.h>
/*********************
* DEFINES
*********************/
#define TAG "EPDIY"
EpdiyHighlevelState hl;
uint16_t flushcalls = 0;
uint8_t * framebuffer;
uint8_t temperature = 25;
/* Display initialization routine */
@ -25,35 +17,29 @@ void epdiy_init(void)
hl = epd_hl_init(EPD_BUILTIN_WAVEFORM);
framebuffer = epd_hl_get_framebuffer(&hl);
epd_poweron();
//Clear all always in init?
//Clear all always in init:
epd_fullclear(&hl, temperature);
}
uint16_t xo = 0;
uint16_t yo = 0;
uint16_t rx = 0;
uint16_t ry = 0;
uint16_t rw = 0;
uint16_t rh = 0;
/* A copy from epd_copy_to_framebuffer with temporary lenght prediction */
void buf_copy_to_framebuffer(EpdRect image_area, const uint8_t *image_data) {
assert(framebuffer != NULL);
for (uint32_t i = 0; i < image_area.width * image_area.height; i++) {
uint32_t value_index = i;
// for images of uneven width consume an additional nibble per row.
// For images of uneven width consume an additional nibble per row.
if (image_area.width % 2) {
value_index += i / image_area.width;
}
// Get out if we get the end of the buffer (image_data[value_index / 2]== '\0') 111684
// Get out if we get the end of the buffer. Question: How to detect the end without a lenght?
// Zero terminator check gets out before: (image_data[value_index / 2]== '\0')
// 111684 seems to be the last element in image_data
if (value_index / 2 > 111600) {
printf("FOUND END incr:%d img[idx]:%d Aw:%d Ah:%d\n", i,
value_index / 2,image_area.width,image_area.height);
break;
}
uint8_t val = (value_index % 2) ? (image_data[value_index / 2] & 0xF0) >> 4
: image_data[value_index / 2] & 0x0F;
@ -74,20 +60,18 @@ void buf_copy_to_framebuffer(EpdRect image_area, const uint8_t *image_data) {
}
}
/* Required by LVGL */
/* Required by LVGL. Sends the color_map to the screen with a partial update */
void epdiy_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map)
{
++flushcalls;
xo = area->x1;
yo = area->y1;
uint16_t w = lv_area_get_width(area);
uint16_t h = lv_area_get_height(area);
EpdRect update_area = {
.x = xo,
.y = yo,
.x = (uint16_t)area->x1,
.y = (uint16_t)area->y1,
.width = w,
.height = h,
.height = h
};
uint8_t* buf = (uint8_t *) color_map;
@ -97,15 +81,12 @@ void epdiy_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_ma
printf("%x ", buf[index]);
} */
// Does not work for full screen update yet (Should check large of bug)
if (flushcalls>0){
buf_copy_to_framebuffer(update_area, buf);
}
// Does not work for full screen update yet (Should check large of buf)
buf_copy_to_framebuffer(update_area, buf);
epd_hl_update_area(&hl, MODE_GC16, temperature, update_area); //update_area
printf("epdiy_flush %d x:%d y:%d w:%d h:%d\n", flushcalls,xo,yo,w,h);
//printf("epdiy_flush Rounder() x:%d y:%d w:%d h:%d\n",rx,ry,rw,rh);
printf("epdiy_flush %d x:%d y:%d w:%d h:%d\n", flushcalls,(uint16_t)area->x1,(uint16_t)area->y1,w,h);
/* Inform the graphics library that you are ready with the flushing */
lv_disp_flush_ready(drv);
}
@ -141,13 +122,13 @@ void epdiy_set_px_cb(lv_disp_drv_t * disp_drv, uint8_t* buf,
} */
}
/* Not used at the moment */
void epdiy_rounder_cb(lv_disp_drv_t *disp_drv, lv_area_t *area) {
// Print coordinates to understand what rounder is
/* rx = (int16_t)area->x1;
ry = (int16_t)area->y1;
rw = (int16_t)lv_area_get_width(area);
rh = (int16_t)lv_area_get_height(area);
printf("R x:%d y:%d y1:%d w:%d h:%d\n",rx,ry,area->y1,rw,rh); */
/*
uint16_t rw = (int16_t)lv_area_get_width(area);
uint16_t rh = (int16_t)lv_area_get_height(area);
printf("R x:%d y:%d w:%d h:%d\n",area->x1,area->y1,rw,rh); */
// Force y to be 0: Make some things better, screws other things
//area->y1 = 0;