75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
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/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-02-01 Rudy Lo The first version
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*/
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#include <lvgl.h>
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#include <rtthread.h>
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#include "lv_conf.h"
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#include "drv_rgb_lcd.h"
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#define DRV_DEBUG
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#define LOG_TAG "drv.lvgl"
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#include <drv_log.h>
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/*A static or global variable to store the buffers*/
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static lv_disp_draw_buf_t disp_buf;
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/*Descriptor of a display driver*/
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static lv_disp_drv_t disp_drv;
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static lv_color_t *lcdbuf_1;
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static lv_color_t *lcdbuf_2;
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/*Flush the content of the internal buffer the specific area on the display
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*You can use DMA or any hardware acceleration to do this operation in the background but
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*'lv_disp_flush_ready()' has to be called when finished.*/
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static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
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{
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/* color_p is a buffer pointer; the buffer is provided by LVGL */
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LCD->L[0].ADDR = (uint32_t)color_p;
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LCD->CR |= (1 << LCD_CR_VBPRELOAD_Pos);
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while(LCD->CR & LCD_CR_VBPRELOAD_Msk) __NOP();
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/*IMPORTANT!!!
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*Inform the graphics library that you are ready with the flushing*/
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lv_disp_flush_ready(disp_drv);
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}
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void lv_port_disp_init(void)
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{
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struct swm_rgb_lcd_device *rgb_lcd;
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rgb_lcd = (struct swm_rgb_lcd_device *)rt_device_find("rgb_lcd");
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lcdbuf_1 = (lv_color_t *)rgb_lcd->lcd_info.framebuffer;
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lcdbuf_2 = (lv_color_t *)rt_malloc_align(LCD_BUF_SIZE,4);
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if(lcdbuf_2 == RT_NULL)
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{
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LOG_E("init lcd buffer failed!\n");
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return;
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}
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/*Initialize `disp_buf` with the buffer(s). With only one buffer use NULL instead buf_2 */
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lv_disp_draw_buf_init(&disp_buf, lcdbuf_1, lcdbuf_2, LV_HOR_RES * LV_VER_RES);
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lv_disp_drv_init(&disp_drv); /*Basic initialization*/
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/*Set the resolution of the display*/
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disp_drv.hor_res = LV_HOR_RES;
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disp_drv.ver_res = LV_VER_RES;
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/*Set a display buffer*/
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disp_drv.draw_buf = &disp_buf;
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/*Used to copy the buffer's content to the display*/
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disp_drv.flush_cb = disp_flush;
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/*Required for Example 3)*/
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disp_drv.full_refresh = 1;
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/*Finally register the driver*/
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lv_disp_drv_register(&disp_drv);
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}
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