Прошло 2 года.

lib/epdiy/examples/vcom-kickback/main/main.c

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+/* Simple firmware for a ESP32 displaying a static image on an EPaper Screen */
+
+#include "esp_heap_caps.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "esp_log.h"
+#include "dragon.h"
+#include "epd_highlevel.h"
+#include "epdiy.h"
+#include "board/tps65185.h"
+
+EpdiyHighlevelState hl;
+
+// choose the default demo board depending on the architecture
+#ifdef CONFIG_IDF_TARGET_ESP32
+#define DEMO_BOARD epd_board_v6
+#elif defined(CONFIG_IDF_TARGET_ESP32S3)
+#define DEMO_BOARD epd_board_v7
+#endif
+int temperature = 25;
+
+void draw_dragon() {
+    EpdRect dragon_area = { .x = 0, .y = 0, .width = dragon_width, .height = dragon_height };
+    epd_poweron();
+    epd_fullclear(&hl, temperature);
+    epd_copy_to_framebuffer(dragon_area, dragon_data, epd_hl_get_framebuffer(&hl));
+    enum EpdDrawError _err = epd_hl_update_screen(&hl, MODE_GC16, temperature);
+    epd_poweroff();
+}
+
+void idf_loop() {
+    // make a full black | white print to force epdiy to send the update
+    epd_fill_rect(epd_full_screen(), 0, epd_hl_get_framebuffer(&hl));
+    epd_hl_update_screen(&hl, MODE_DU, temperature);
+    vTaskDelay(pdMS_TO_TICKS(1));
+    epd_fill_rect(epd_full_screen(), 255, epd_hl_get_framebuffer(&hl));
+    epd_hl_update_screen(&hl, MODE_DU, temperature);
+}
+
+void idf_setup() {
+    epd_init(&DEMO_BOARD, &ED097TC2, EPD_LUT_64K);
+    hl = epd_hl_init(&epdiy_NULL);
+    // starts the board in kickback more
+    tps_vcom_kickback();
+
+    // display starts to pass BLACK to WHITE but doing nothing+
+    // dince the NULL waveform is full of 0 "Do nothing for each pixel"
+    idf_loop();
+    // start measure and set ACQ bit:
+    tps_vcom_kickback_start();
+    int isrdy = 1;
+    int kickback_volt = 0;
+    while (kickback_volt == 0) {
+        idf_loop();
+        isrdy++;
+        kickback_volt = tps_vcom_kickback_rdy();
+    }
+    ESP_LOGI("vcom", "readings are of %d mV. It was ready in %d refreshes", kickback_volt, isrdy);
+
+    vTaskDelay(pdMS_TO_TICKS(2000));
+    esp_restart();
+}
+
+#ifndef ARDUINO_ARCH_ESP32
+void app_main() {
+    idf_setup();
+}
+#endif