113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/*
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* Copyright (c) 2019 Jan Van Winkel <jan.van_winkel@dxplore.eu>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/kernel.h>
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#include <lvgl.h>
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#include "lvgl_display.h"
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void lvgl_flush_cb_mono(lv_disp_drv_t *disp_drv, const lv_area_t *area, lv_color_t *color_p)
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{
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uint16_t w = area->x2 - area->x1 + 1;
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uint16_t h = area->y2 - area->y1 + 1;
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struct lvgl_disp_data *data = (struct lvgl_disp_data *)disp_drv->user_data;
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const struct device *display_dev = data->display_dev;
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const bool is_epd = data->cap.screen_info & SCREEN_INFO_EPD;
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const bool is_last = lv_disp_flush_is_last(disp_drv);
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if (is_epd && !data->blanking_on && !is_last) {
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/*
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* Turn on display blanking when using an EPD
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* display. This prevents updates and the associated
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* flicker if the screen is rendered in multiple
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* steps.
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*/
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display_blanking_on(display_dev);
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data->blanking_on = true;
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}
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struct display_buffer_descriptor desc = {
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.buf_size = (w * h) / 8U,
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.width = w,
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.pitch = w,
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.height = h,
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.frame_incomplete = !is_last,
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};
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display_write(display_dev, area->x1, area->y1, &desc, (void *)color_p);
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if (data->cap.screen_info & SCREEN_INFO_DOUBLE_BUFFER) {
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display_write(display_dev, area->x1, area->y1, &desc, (void *)color_p);
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}
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if (is_epd && is_last && data->blanking_on) {
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/*
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* The entire screen has now been rendered. Update the
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* display by disabling blanking.
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*/
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display_blanking_off(display_dev);
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data->blanking_on = false;
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}
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lv_disp_flush_ready(disp_drv);
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}
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void lvgl_set_px_cb_mono(lv_disp_drv_t *disp_drv, uint8_t *buf, lv_coord_t buf_w, lv_coord_t x,
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lv_coord_t y, lv_color_t color, lv_opa_t opa)
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{
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struct lvgl_disp_data *data = (struct lvgl_disp_data *)disp_drv->user_data;
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uint8_t *buf_xy;
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uint8_t bit;
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if (data->cap.screen_info & SCREEN_INFO_MONO_VTILED) {
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buf_xy = buf + x + y / 8 * buf_w;
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if (data->cap.screen_info & SCREEN_INFO_MONO_MSB_FIRST) {
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bit = 7 - y % 8;
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} else {
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bit = y % 8;
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}
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} else {
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buf_xy = buf + x / 8 + y * buf_w / 8;
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if (data->cap.screen_info & SCREEN_INFO_MONO_MSB_FIRST) {
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bit = 7 - x % 8;
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} else {
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bit = x % 8;
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}
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}
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if (data->cap.current_pixel_format == PIXEL_FORMAT_MONO10) {
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if (color.full == 0) {
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*buf_xy &= ~BIT(bit);
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} else {
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*buf_xy |= BIT(bit);
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}
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} else {
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if (color.full == 0) {
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*buf_xy |= BIT(bit);
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} else {
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*buf_xy &= ~BIT(bit);
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}
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}
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}
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void lvgl_rounder_cb_mono(lv_disp_drv_t *disp_drv, lv_area_t *area)
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{
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struct lvgl_disp_data *data = (struct lvgl_disp_data *)disp_drv->user_data;
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if (data->cap.screen_info & SCREEN_INFO_X_ALIGNMENT_WIDTH) {
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area->x1 = 0;
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area->x2 = data->cap.x_resolution - 1;
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} else {
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if (data->cap.screen_info & SCREEN_INFO_MONO_VTILED) {
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area->y1 &= ~0x7;
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area->y2 |= 0x7;
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} else {
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area->x1 &= ~0x7;
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area->x2 |= 0x7;
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}
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}
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}
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