135 lines
4.3 KiB
C++
135 lines
4.3 KiB
C++
#include "esp_log.h"
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "epdiy_epaper.h"
|
|
#include "epd_driver.h"
|
|
#include "epd_highlevel.h"
|
|
|
|
EpdiyHighlevelState hl;
|
|
uint16_t flushcalls = 0;
|
|
uint8_t * framebuffer;
|
|
uint8_t temperature = 25;
|
|
|
|
/* Display initialization routine */
|
|
void epdiy_init(void)
|
|
{
|
|
epd_init(EPD_OPTIONS_DEFAULT);
|
|
hl = epd_hl_init(EPD_BUILTIN_WAVEFORM);
|
|
framebuffer = epd_hl_get_framebuffer(&hl);
|
|
epd_poweron();
|
|
//Clear all always in init:
|
|
epd_fullclear(&hl, temperature);
|
|
}
|
|
|
|
/* 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.
|
|
if (image_area.width % 2) {
|
|
value_index += i / image_area.width;
|
|
}
|
|
|
|
// 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;
|
|
|
|
int xx = image_area.x + i % image_area.width;
|
|
if (xx < 0 || xx >= EPD_WIDTH) {
|
|
continue;
|
|
}
|
|
int yy = image_area.y + i / image_area.width;
|
|
if (yy < 0 || yy >= EPD_HEIGHT) {
|
|
continue;
|
|
}
|
|
uint8_t *buf_ptr = &framebuffer[yy * EPD_WIDTH / 2 + xx / 2];
|
|
if (xx % 2) {
|
|
*buf_ptr = (*buf_ptr & 0x0F) | (val << 4);
|
|
} else {
|
|
*buf_ptr = (*buf_ptr & 0xF0) | val;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
uint16_t w = lv_area_get_width(area);
|
|
uint16_t h = lv_area_get_height(area);
|
|
|
|
EpdRect update_area = {
|
|
.x = (uint16_t)area->x1,
|
|
.y = (uint16_t)area->y1,
|
|
.width = w,
|
|
.height = h
|
|
};
|
|
|
|
uint8_t* buf = (uint8_t *) color_map;
|
|
// Buffer debug
|
|
/*
|
|
for (int index=0; index<400; index++) {
|
|
printf("%x ", buf[index]);
|
|
} */
|
|
|
|
// 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,(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);
|
|
}
|
|
|
|
/*
|
|
* Called for each pixel. Designed with the idea to fill the buffer directly, not to set each pixel, see:
|
|
* https://forum.lvgl.io/t/lvgl-port-to-be-used-with-epaper-displays/5630/3
|
|
*/
|
|
void epdiy_set_px_cb(lv_disp_drv_t * disp_drv, uint8_t* buf,
|
|
lv_coord_t buf_w, lv_coord_t x, lv_coord_t y,
|
|
lv_color_t color, lv_opa_t opa)
|
|
{
|
|
// Test using RGB232
|
|
int16_t epd_color = 255;
|
|
if ((int16_t)color.full<250) {
|
|
epd_color = (int16_t)color.full/3;
|
|
}
|
|
|
|
//Instead of using epd_draw_pixel: Set pixel directly in buffer
|
|
uint16_t idx = (int16_t)y * buf_w / 2 + (int16_t)x / 2;
|
|
if (x % 2) {
|
|
buf[idx] = (buf[idx] & 0x0F) | (epd_color & 0xF0);
|
|
} else {
|
|
buf[idx] = (buf[idx] & 0xF0) | (epd_color >> 4);
|
|
}
|
|
|
|
// Directly in framebuffer for epaper
|
|
/* uint8_t *buf_ptr = &framebuffer[(int16_t)y * buf_w / 2 + (int16_t)x / 2];
|
|
if (x % 2) {
|
|
*buf_ptr = (*buf_ptr & 0x0F) | (epd_color & 0xF0);
|
|
} else {
|
|
*buf_ptr = (*buf_ptr & 0xF0) | (epd_color >> 4);
|
|
} */
|
|
}
|
|
|
|
/* 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
|
|
/*
|
|
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;
|
|
} |