Using epdiy_set_px_cb *buf and returning *color_map in flush method to update only the part that is updated. Still buggy but working version
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martinberlin
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c539322a36
1 changed files with 154 additions and 0 deletions
154
lvgl_tft/epdiy_epaper_v2.cpp
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154
lvgl_tft/epdiy_epaper_v2.cpp
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#include "esp_log.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "epdiy_epaper.h"
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#include "epd_driver.h"
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#include "epd_highlevel.h"
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// Usable size
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#include <malloc.h>
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/*********************
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* DEFINES
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*********************/
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#define TAG "EPDIY"
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EpdiyHighlevelState hl;
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uint16_t flushcalls = 0;
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uint8_t * framebuffer;
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uint8_t temperature = 25;
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/* Display initialization routine */
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void epdiy_init(void)
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{
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epd_init(EPD_OPTIONS_DEFAULT);
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hl = epd_hl_init(EPD_BUILTIN_WAVEFORM);
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framebuffer = epd_hl_get_framebuffer(&hl);
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epd_poweron();
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//Clear all always in init?
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epd_fullclear(&hl, temperature);
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}
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uint16_t xo = 0;
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uint16_t yo = 0;
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uint16_t rx = 0;
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uint16_t ry = 0;
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uint16_t rw = 0;
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uint16_t rh = 0;
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void buf_copy_to_framebuffer(EpdRect image_area, const uint8_t *image_data) {
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assert(framebuffer != NULL);
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for (uint32_t i = 0; i < image_area.width * image_area.height; i++) {
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uint32_t value_index = i;
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// for images of uneven width consume an additional nibble per row.
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if (image_area.width % 2) {
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value_index += i / image_area.width;
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}
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// Get out if we get the end of the buffer (image_data[value_index / 2]== '\0') 111684
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if (value_index / 2 > 111600) {
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printf("FOUND END incr:%d img[idx]:%d Aw:%d Ah:%d\n", i,
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value_index / 2,image_area.width,image_area.height);
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break;
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}
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uint8_t val = (value_index % 2) ? (image_data[value_index / 2] & 0xF0) >> 4
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: image_data[value_index / 2] & 0x0F;
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int xx = image_area.x + i % image_area.width;
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if (xx < 0 || xx >= EPD_WIDTH) {
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continue;
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}
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int yy = image_area.y + i / image_area.width;
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if (yy < 0 || yy >= EPD_HEIGHT) {
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continue;
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}
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uint8_t *buf_ptr = &framebuffer[yy * EPD_WIDTH / 2 + xx / 2];
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if (xx % 2) {
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*buf_ptr = (*buf_ptr & 0x0F) | (val << 4);
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} else {
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*buf_ptr = (*buf_ptr & 0xF0) | val;
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}
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}
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}
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/* Required by LVGL */
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void epdiy_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map)
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{
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++flushcalls;
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xo = area->x1;
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yo = area->y1;
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uint16_t w = lv_area_get_width(area);
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uint16_t h = lv_area_get_height(area);
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EpdRect update_area = {
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.x = xo,
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.y = yo,
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.width = w,
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.height = h,
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};
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uint8_t* buf = (uint8_t *) color_map;
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// Buffer debug
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/*
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for (int index=0; index<400; index++) {
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printf("%x ", buf[index]);
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} */
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// Does not work for full screen update yet (Should check large of bug)
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if (flushcalls>0){
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buf_copy_to_framebuffer(update_area, buf);
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}
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epd_hl_update_area(&hl, MODE_GC16, temperature, update_area); //update_area
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printf("epdiy_flush %d x:%d y:%d w:%d h:%d\n", flushcalls,xo,yo,w,h);
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//printf("epdiy_flush Rounder() x:%d y:%d w:%d h:%d\n",rx,ry,rw,rh);
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/* Inform the graphics library that you are ready with the flushing */
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lv_disp_flush_ready(drv);
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}
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/*
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* Called for each pixel. Designed with the idea to fill the buffer directly, not to set each pixel, see:
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* https://forum.lvgl.io/t/lvgl-port-to-be-used-with-epaper-displays/5630/3
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*/
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void epdiy_set_px_cb(lv_disp_drv_t * disp_drv, uint8_t* buf,
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lv_coord_t buf_w, lv_coord_t x, lv_coord_t y,
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lv_color_t color, lv_opa_t opa)
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{
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// Test using RGB232
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int16_t epd_color = 255;
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if ((int16_t)color.full<250) {
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epd_color = (int16_t)color.full/3;
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}
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//Instead of using epd_draw_pixel: Set pixel directly in buffer
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uint16_t idx = (int16_t)y * buf_w / 2 + (int16_t)x / 2;
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if (x % 2) {
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buf[idx] = (buf[idx] & 0x0F) | (epd_color & 0xF0);
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} else {
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buf[idx] = (buf[idx] & 0xF0) | (epd_color >> 4);
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}
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// Directly in framebuffer for epaper
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/* uint8_t *buf_ptr = &framebuffer[(int16_t)y * buf_w / 2 + (int16_t)x / 2];
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if (x % 2) {
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*buf_ptr = (*buf_ptr & 0x0F) | (epd_color & 0xF0);
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} else {
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*buf_ptr = (*buf_ptr & 0xF0) | (epd_color >> 4);
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} */
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}
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void epdiy_rounder_cb(lv_disp_drv_t *disp_drv, lv_area_t *area) {
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// Print coordinates to understand what rounder is
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/* rx = (int16_t)area->x1;
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ry = (int16_t)area->y1;
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rw = (int16_t)lv_area_get_width(area);
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rh = (int16_t)lv_area_get_height(area);
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printf("R x:%d y:%d y1:%d w:%d h:%d\n",rx,ry,area->y1,rw,rh); */
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// Force y to be 0: Make some things better, screws other things
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//area->y1 = 0;
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}
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