Прошло 2 года.

lib/epdiy/examples/http-server/main/epd.c

@@ -0,0 +1,44 @@
+#include "epd.h"
+
+static EpdiyHighlevelState hl;
+static EpdData data;
+
+static inline void checkError(enum EpdDrawError err) {
+    if (err != EPD_DRAW_SUCCESS) {
+        ESP_LOGE("demo", "draw error: %X", err);
+    }
+}
+
+EpdData n_epd_data() {
+    return data;
+}
+
+void n_epd_setup(const EpdDisplay_t* display) {
+    epd_init(&epd_board_v7, display, EPD_LUT_64K);
+    epd_set_vcom(1560);
+    hl = epd_hl_init(EPD_BUILTIN_WAVEFORM);
+    epd_set_rotation(EPD_ROT_LANDSCAPE);
+    data.width = epd_rotated_display_width();
+    data.height = epd_rotated_display_height();
+    data.temperature = epd_ambient_temperature();
+}
+
+void n_epd_clear() {
+    epd_poweron();
+    epd_fullclear(&hl, data.temperature);
+    epd_poweroff();
+}
+
+void n_epd_draw(uint8_t* content, int x, int y, int width, int height) {
+    uint8_t* fb = epd_hl_get_framebuffer(&hl);
+    EpdRect area = {
+        .x = x,
+        .y = y,
+        .width = width,
+        .height = height,
+    };
+    epd_draw_rotated_image(area, content, fb);
+    epd_poweron();
+    checkError(epd_hl_update_screen(&hl, MODE_GC16, data.temperature));
+    epd_poweroff();
+}