440 lines
13 KiB
C
440 lines
13 KiB
C
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/*
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* Copyright (c) 2006-2023, 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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* 2019-01-08 zylx first version
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*/
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#include <board.h>
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#ifdef BSP_USING_LCD
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#include <lcd_port.h>
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#include <rtdevice.h>
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#include <string.h>
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#define DRV_DEBUG
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#define LOG_TAG "drv.lcd"
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#include <drv_log.h>
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#define LCD_DEVICE(dev) (struct drv_lcd_device *)(dev)
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LTDC_HandleTypeDef LtdcHandle = {0};
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struct drv_lcd_device
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{
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struct rt_device parent;
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struct rt_device_graphic_info lcd_info;
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struct rt_semaphore lcd_lock;
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/* 0:front_buf is being used 1: back_buf is being used*/
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rt_uint8_t cur_buf;
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rt_uint8_t *front_buf;
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rt_uint8_t *back_buf;
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};
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struct drv_lcd_device _lcd;
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static rt_err_t drv_lcd_init(struct rt_device *device)
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{
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struct drv_lcd_device *lcd = LCD_DEVICE(device);
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/* nothing, right now */
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lcd = lcd;
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return RT_EOK;
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}
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#ifndef ART_PI_TouchGFX_LIB
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static rt_err_t drv_lcd_control(struct rt_device *device, int cmd, void *args)
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{
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struct drv_lcd_device *lcd = LCD_DEVICE(device);
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switch (cmd)
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{
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case RTGRAPHIC_CTRL_RECT_UPDATE:
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{
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/* update */
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if (_lcd.cur_buf)
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{
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/* back_buf is being used */
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memcpy(_lcd.front_buf, _lcd.lcd_info.framebuffer, LCD_BUF_SIZE);
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/* Configure the color frame buffer start address */
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LTDC_LAYER(&LtdcHandle, 0)->CFBAR &= ~(LTDC_LxCFBAR_CFBADD);
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LTDC_LAYER(&LtdcHandle, 0)->CFBAR = (uint32_t)(_lcd.front_buf);
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_lcd.cur_buf = 0;
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}
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else
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{
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/* front_buf is being used */
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memcpy(_lcd.back_buf, _lcd.lcd_info.framebuffer, LCD_BUF_SIZE);
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/* Configure the color frame buffer start address */
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LTDC_LAYER(&LtdcHandle, 0)->CFBAR &= ~(LTDC_LxCFBAR_CFBADD);
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LTDC_LAYER(&LtdcHandle, 0)->CFBAR = (uint32_t)(_lcd.back_buf);
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_lcd.cur_buf = 1;
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}
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rt_sem_take(&_lcd.lcd_lock, RT_TICK_PER_SECOND / 20);
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HAL_LTDC_Relaod(&LtdcHandle, LTDC_SRCR_VBR);
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}
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break;
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case RTGRAPHIC_CTRL_GET_INFO:
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{
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struct rt_device_graphic_info *info = (struct rt_device_graphic_info *)args;
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RT_ASSERT(info != RT_NULL);
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info->pixel_format = lcd->lcd_info.pixel_format;
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info->bits_per_pixel = 16;
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info->width = lcd->lcd_info.width;
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info->height = lcd->lcd_info.height;
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info->framebuffer = lcd->lcd_info.framebuffer;
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}
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break;
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default:
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return -RT_EINVAL;
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}
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return RT_EOK;
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}
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void HAL_LTDC_ReloadEventCallback(LTDC_HandleTypeDef *hltdc)
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{
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/* emable line interupt */
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__HAL_LTDC_ENABLE_IT(&LtdcHandle, LTDC_IER_LIE);
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}
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void HAL_LTDC_LineEventCallback(LTDC_HandleTypeDef *hltdc)
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{
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rt_sem_release(&_lcd.lcd_lock);
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}
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#endif
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void LTDC_IRQHandler(void)
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{
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rt_interrupt_enter();
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HAL_LTDC_IRQHandler(&LtdcHandle);
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rt_interrupt_leave();
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}
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rt_err_t stm32_lcd_init(struct drv_lcd_device *lcd)
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{
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LTDC_LayerCfgTypeDef pLayerCfg = {0};
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/* LTDC Initialization -------------------------------------------------------*/
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/* Polarity configuration */
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/* Initialize the horizontal synchronization polarity as active low */
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LtdcHandle.Init.HSPolarity = LTDC_HSPOLARITY_AL;
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/* Initialize the vertical synchronization polarity as active low */
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LtdcHandle.Init.VSPolarity = LTDC_VSPOLARITY_AL;
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/* Initialize the data enable polarity as active low */
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LtdcHandle.Init.DEPolarity = LTDC_DEPOLARITY_AL;
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/* Initialize the pixel clock polarity as input pixel clock */
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LtdcHandle.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
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/* Timing configuration */
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/* Horizontal synchronization width = Hsync - 1 */
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LtdcHandle.Init.HorizontalSync = LCD_HSYNC_WIDTH - 1;
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/* Vertical synchronization height = Vsync - 1 */
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LtdcHandle.Init.VerticalSync = LCD_VSYNC_HEIGHT - 1;
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/* Accumulated horizontal back porch = Hsync + HBP - 1 */
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LtdcHandle.Init.AccumulatedHBP = LCD_HSYNC_WIDTH + LCD_HBP - 1;
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/* Accumulated vertical back porch = Vsync + VBP - 1 */
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LtdcHandle.Init.AccumulatedVBP = LCD_VSYNC_HEIGHT + LCD_VBP - 1;
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/* Accumulated active width = Hsync + HBP + Active Width - 1 */
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LtdcHandle.Init.AccumulatedActiveW = LCD_HSYNC_WIDTH + LCD_HBP + lcd->lcd_info.width - 1;
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/* Accumulated active height = Vsync + VBP + Active Heigh - 1 */
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LtdcHandle.Init.AccumulatedActiveH = LCD_VSYNC_HEIGHT + LCD_VBP + lcd->lcd_info.height - 1;
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/* Total height = Vsync + VBP + Active Heigh + VFP - 1 */
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LtdcHandle.Init.TotalHeigh = LtdcHandle.Init.AccumulatedActiveH + LCD_VFP;
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/* Total width = Hsync + HBP + Active Width + HFP - 1 */
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LtdcHandle.Init.TotalWidth = LtdcHandle.Init.AccumulatedActiveW + LCD_HFP;
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/* Configure R,G,B component values for LCD background color */
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LtdcHandle.Init.Backcolor.Blue = 0;
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LtdcHandle.Init.Backcolor.Green = 0;
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LtdcHandle.Init.Backcolor.Red = 0;
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LtdcHandle.Instance = LTDC;
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/* Layer1 Configuration ------------------------------------------------------*/
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/* Windowing configuration */
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pLayerCfg.WindowX0 = 0;
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pLayerCfg.WindowX1 = lcd->lcd_info.width;
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pLayerCfg.WindowY0 = 0;
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pLayerCfg.WindowY1 = lcd->lcd_info.height;
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/* Pixel Format configuration*/
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if (lcd->lcd_info.pixel_format == RTGRAPHIC_PIXEL_FORMAT_RGB565)
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{
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pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
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}
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else if (lcd->lcd_info.pixel_format == RTGRAPHIC_PIXEL_FORMAT_ARGB888)
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{
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pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_ARGB8888;
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}
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else if (lcd->lcd_info.pixel_format == RTGRAPHIC_PIXEL_FORMAT_RGB888)
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{
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pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB888;
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}
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else if (lcd->lcd_info.pixel_format == RTGRAPHIC_PIXEL_FORMAT_RGB888)
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{
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pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB888;
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}
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else
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{
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LOG_E("unsupported pixel format");
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return -RT_ERROR;
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}
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/* Start Address configuration : frame buffer is located at FLASH memory */
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pLayerCfg.FBStartAdress = (uint32_t)lcd->front_buf;
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/* Alpha constant (255 totally opaque) */
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pLayerCfg.Alpha = 255;
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/* Default Color configuration (configure A,R,G,B component values) */
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pLayerCfg.Alpha0 = 0;
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pLayerCfg.Backcolor.Blue = 0;
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pLayerCfg.Backcolor.Green = 0;
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pLayerCfg.Backcolor.Red = 0;
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/* Configure blending factors */
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/* Constant Alpha value: pLayerCfg.Alpha / 255
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C: Current Layer Color
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Cs: Background color
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BC = Constant Alpha x C + (1 - Constant Alpha ) x Cs */
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/* BlendingFactor1: Pixel Alpha x Constant Alpha */
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pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_CA;
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/* BlendingFactor2: 1 - (Pixel Alpha x Constant Alpha) */
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pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
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/* Configure the number of lines and number of pixels per line */
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pLayerCfg.ImageWidth = lcd->lcd_info.width;
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pLayerCfg.ImageHeight = lcd->lcd_info.height;
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/* Configure the LTDC */
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if (HAL_LTDC_Init(&LtdcHandle) != HAL_OK)
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{
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LOG_E("LTDC init failed");
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return -RT_ERROR;
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}
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/* Configure the Background Layer*/
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if (HAL_LTDC_ConfigLayer(&LtdcHandle, &pLayerCfg, 0) != HAL_OK)
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{
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LOG_E("LTDC layer init failed");
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return -RT_ERROR;
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}
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else
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{
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/* enable LTDC interrupt */
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HAL_NVIC_SetPriority(LTDC_IRQn, 1, 0);
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HAL_NVIC_EnableIRQ(LTDC_IRQn);
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LOG_D("LTDC init success");
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return RT_EOK;
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}
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}
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#if defined(LCD_BACKLIGHT_USING_PWM)
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void turn_on_lcd_backlight(void)
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{
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struct rt_device_pwm *pwm_dev;
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/* turn on the LCD backlight */
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pwm_dev = (struct rt_device_pwm *)rt_device_find(LCD_PWM_DEV_NAME);
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/* pwm frequency:100K = 10000ns */
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rt_pwm_set(pwm_dev, LCD_PWM_DEV_CHANNEL, 10000, 10000);
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rt_pwm_enable(pwm_dev, LCD_PWM_DEV_CHANNEL);
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}
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#elif defined(LCD_BACKLIGHT_USING_GPIO)
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void turn_on_lcd_backlight(void)
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{
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rt_pin_mode(LCD_BL_GPIO_NUM, PIN_MODE_OUTPUT);
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rt_pin_mode(LCD_DISP_GPIO_NUM, PIN_MODE_OUTPUT);
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rt_pin_write(LCD_DISP_GPIO_NUM, PIN_HIGH);
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rt_pin_write(LCD_BL_GPIO_NUM, PIN_HIGH);
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}
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#else
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void turn_on_lcd_backlight(void)
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{
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}
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#endif
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#ifdef RT_USING_DEVICE_OPS
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const static struct rt_device_ops lcd_ops =
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{
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drv_lcd_init,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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RT_NULL,
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drv_lcd_control
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};
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#endif
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int drv_lcd_hw_init(void)
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{
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rt_err_t result = RT_EOK;
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struct rt_device *device = &_lcd.parent;
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/* memset _lcd to zero */
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memset(&_lcd, 0x00, sizeof(_lcd));
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/* init lcd_lock semaphore */
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result = rt_sem_init(&_lcd.lcd_lock, "lcd_lock", 0, RT_IPC_FLAG_FIFO);
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if (result != RT_EOK)
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{
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LOG_E("init semaphore failed!\n");
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result = -RT_ENOMEM;
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goto __exit;
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}
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/* config LCD dev info */
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_lcd.lcd_info.height = LCD_HEIGHT;
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_lcd.lcd_info.width = LCD_WIDTH;
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_lcd.lcd_info.bits_per_pixel = LCD_BITS_PER_PIXEL;
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_lcd.lcd_info.pixel_format = LCD_PIXEL_FORMAT;
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/* malloc memory for Triple Buffering */
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_lcd.lcd_info.framebuffer = rt_malloc_align(LCD_BUF_SIZE, LCD_BUF_SIZE);
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_lcd.back_buf = rt_malloc_align(LCD_BUF_SIZE, LCD_BUF_SIZE);
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_lcd.front_buf = rt_malloc_align(LCD_BUF_SIZE, LCD_BUF_SIZE);
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if (_lcd.lcd_info.framebuffer == RT_NULL || _lcd.back_buf == RT_NULL || _lcd.front_buf == RT_NULL)
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{
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LOG_E("init frame buffer failed!\n");
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result = -RT_ENOMEM;
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goto __exit;
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}
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/* memset buff to 0xFF */
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memset(_lcd.lcd_info.framebuffer, 0xFF, LCD_BUF_SIZE);
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memset(_lcd.back_buf, 0xFF, LCD_BUF_SIZE);
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memset(_lcd.front_buf, 0xFF, LCD_BUF_SIZE);
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device->type = RT_Device_Class_Graphic;
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#ifdef RT_USING_DEVICE_OPS
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device->ops = &lcd_ops;
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#else
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device->init = drv_lcd_init;
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#ifndef ART_PI_TouchGFX_LIB
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device->control = drv_lcd_control;
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#endif
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#endif
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/* register lcd device */
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rt_device_register(device, "lcd", RT_DEVICE_FLAG_RDWR);
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/* init stm32 LTDC */
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if (stm32_lcd_init(&_lcd) != RT_EOK)
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{
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result = -RT_ERROR;
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goto __exit;
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}
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else
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{
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turn_on_lcd_backlight();
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}
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__exit:
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if (result != RT_EOK)
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{
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rt_sem_detach(&_lcd.lcd_lock);
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if (_lcd.lcd_info.framebuffer)
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{
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rt_free(_lcd.lcd_info.framebuffer);
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}
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if (_lcd.back_buf)
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{
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rt_free(_lcd.back_buf);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (_lcd.front_buf)
|
||
|
|
{
|
||
|
|
rt_free(_lcd.front_buf);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
INIT_DEVICE_EXPORT(drv_lcd_hw_init);
|
||
|
|
|
||
|
|
#ifndef ART_PI_TouchGFX_LIB
|
||
|
|
#ifdef DRV_DEBUG
|
||
|
|
#ifdef FINSH_USING_MSH
|
||
|
|
int lcd_test()
|
||
|
|
{
|
||
|
|
struct drv_lcd_device *lcd;
|
||
|
|
lcd = (struct drv_lcd_device *)rt_device_find("lcd");
|
||
|
|
|
||
|
|
while (1)
|
||
|
|
{
|
||
|
|
if (lcd->lcd_info.pixel_format == RTGRAPHIC_PIXEL_FORMAT_RGB565)
|
||
|
|
{
|
||
|
|
/* red */
|
||
|
|
for (int i = 0; i < LCD_BUF_SIZE / 2; i++)
|
||
|
|
{
|
||
|
|
lcd->lcd_info.framebuffer[2 * i] = 0x00;
|
||
|
|
lcd->lcd_info.framebuffer[2 * i + 1] = 0xF8;
|
||
|
|
}
|
||
|
|
lcd->parent.control(&lcd->parent, RTGRAPHIC_CTRL_RECT_UPDATE, RT_NULL);
|
||
|
|
rt_thread_mdelay(1000);
|
||
|
|
/* green */
|
||
|
|
for (int i = 0; i < LCD_BUF_SIZE / 2; i++)
|
||
|
|
{
|
||
|
|
lcd->lcd_info.framebuffer[2 * i] = 0xE0;
|
||
|
|
lcd->lcd_info.framebuffer[2 * i + 1] = 0x07;
|
||
|
|
}
|
||
|
|
lcd->parent.control(&lcd->parent, RTGRAPHIC_CTRL_RECT_UPDATE, RT_NULL);
|
||
|
|
rt_thread_mdelay(1000);
|
||
|
|
/* blue */
|
||
|
|
for (int i = 0; i < LCD_BUF_SIZE / 2; i++)
|
||
|
|
{
|
||
|
|
lcd->lcd_info.framebuffer[2 * i] = 0x1F;
|
||
|
|
lcd->lcd_info.framebuffer[2 * i + 1] = 0x00;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (lcd->lcd_info.pixel_format == RTGRAPHIC_PIXEL_FORMAT_RGB888)
|
||
|
|
{
|
||
|
|
/* red */
|
||
|
|
for (int i = 0; i < LCD_BUF_SIZE / 3; i++)
|
||
|
|
{
|
||
|
|
lcd->lcd_info.framebuffer[3 * i] = 0x00;
|
||
|
|
lcd->lcd_info.framebuffer[3 * i + 1] = 0x00;
|
||
|
|
lcd->lcd_info.framebuffer[3 * i + 2] = 0xff;
|
||
|
|
}
|
||
|
|
lcd->parent.control(&lcd->parent, RTGRAPHIC_CTRL_RECT_UPDATE, RT_NULL);
|
||
|
|
rt_thread_mdelay(1000);
|
||
|
|
/* green */
|
||
|
|
for (int i = 0; i < LCD_BUF_SIZE / 3; i++)
|
||
|
|
{
|
||
|
|
lcd->lcd_info.framebuffer[3 * i] = 0x00;
|
||
|
|
lcd->lcd_info.framebuffer[3 * i + 1] = 0xff;
|
||
|
|
lcd->lcd_info.framebuffer[3 * i + 2] = 0x00;
|
||
|
|
}
|
||
|
|
lcd->parent.control(&lcd->parent, RTGRAPHIC_CTRL_RECT_UPDATE, RT_NULL);
|
||
|
|
rt_thread_mdelay(1000);
|
||
|
|
/* blue */
|
||
|
|
for (int i = 0; i < LCD_BUF_SIZE / 3; i++)
|
||
|
|
{
|
||
|
|
lcd->lcd_info.framebuffer[3 * i] = 0xff;
|
||
|
|
lcd->lcd_info.framebuffer[3 * i + 1] = 0x00;
|
||
|
|
lcd->lcd_info.framebuffer[3 * i + 2] = 0x00;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
lcd->parent.control(&lcd->parent, RTGRAPHIC_CTRL_RECT_UPDATE, RT_NULL);
|
||
|
|
rt_thread_mdelay(1000);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
MSH_CMD_EXPORT(lcd_test, lcd_test);
|
||
|
|
#endif /* FINSH_USING_MSH */
|
||
|
|
#endif /* DRV_DEBUG */
|
||
|
|
#endif /* BSP_USING_LCD */
|
||
|
|
#endif
|