93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
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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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/**************************************************************************************************
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* NOTE: This file iis the first version that writes directly on the set_px callback
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* each pixel into the epaper display buffer. The second version is not epdiy_epaper.cpp
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* It writes *buf and then it comes as *color_map on the flush callback.
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* Feel free to experiment with this 2. epdiy_epaper.cpp works better to make a small UX
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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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/* 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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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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/* 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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// Debug where x y is printed, not all otherwise is too much Serial
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/* if ((int16_t)y%10==0 && flushcalls>0){
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if ((int16_t)x%2==0){
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printf("x%d y%d\n", (int16_t)x, (int16_t)y);
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}
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}
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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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int16_t x1 = (int16_t)x;
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int16_t y1 = (int16_t)y;
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//Instead of using epd_draw_pixel: Set pixel directly in buffer
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//epd_draw_pixel(x1, y1, epd_color, framebuffer);
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uint8_t *buf_ptr = &framebuffer[y1 * buf_w / 2 + x1 / 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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