mirror of https://github.com/arendst/Tasmota.git
72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
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/*
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* Test program for displaying a grayscale pattern.
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*
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* Use this to calibrate grayscale timings for new displays or test alternative waveforms.
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*/
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#include "esp_heap_caps.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "sdkconfig.h"
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#include <string.h>
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#include "epd_driver.h"
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#include "epd_highlevel.h"
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#define WAVEFORM EPD_BUILTIN_WAVEFORM
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EpdiyHighlevelState hl;
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void write_grayscale_pattern(bool direction, uint8_t* fb) {
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static uint8_t grayscale_line[EPD_WIDTH / 2];
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if (direction) {
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for (uint32_t i = 0; i < EPD_WIDTH / 2; i++) {
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uint8_t segment = i / (EPD_WIDTH / 16 / 2);
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grayscale_line[i] = (segment << 4) | segment;
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}
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} else {
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for (uint32_t i = 0; i < EPD_WIDTH / 2; i++) {
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uint8_t segment = (EPD_WIDTH / 2 - i - 1) / (EPD_WIDTH / 16 / 2);
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grayscale_line[i] = (segment << 4) | segment;
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}
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}
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for (uint32_t y = 0; y < EPD_HEIGHT; y++) {
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memcpy(fb + EPD_WIDTH / 2 * y, grayscale_line, EPD_WIDTH / 2);
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}
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}
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void loop() {
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uint8_t* fb = epd_hl_get_framebuffer(&hl);
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write_grayscale_pattern(false, fb);
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int temperature = 25; //epd_ambient_temperature();
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epd_poweron();
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epd_clear();
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enum EpdDrawError err = epd_hl_update_screen(&hl, MODE_GC16, temperature);
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epd_poweroff();
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vTaskDelay(5000);
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write_grayscale_pattern(true, fb);
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epd_poweron();
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err = epd_hl_update_screen(&hl, MODE_GC16, temperature);
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epd_poweroff();
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vTaskDelay(100000);
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}
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void IRAM_ATTR app_main() {
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epd_init(EPD_OPTIONS_DEFAULT);
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hl = epd_hl_init(WAVEFORM);
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while (1) {
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loop();
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};
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}
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