[bsp][stm32] add lcd driver

bsp/stm32/libraries/HAL_Drivers/SConscript

@@ -41,6 +41,9 @@ if GetDepend(['RT_USING_ADC']):
 if GetDepend('BSP_USING_SDRAM'):
     src += ['drv_sdram.c']
 
+if GetDepend('BSP_USING_LCD'):
+    src += ['drv_lcd.c']
+
 if GetDepend('BSP_USING_ONCHIP_RTC'):
     src += ['drv_rtc.c']
 

bsp/stm32/libraries/HAL_Drivers/drv_lcd.c

+/*
+ * Copyright (c) 2006-2018, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2019-01-08     zylx         first version
+ */
+
+#include <rtthread.h>
+#include <rtdevice.h>
+#include <board.h>
+
+#ifdef BSP_USING_LCD
+#include <lcd_port.h>
+#include <string.h>
+#include "drv_gpio.h"
+
+//#define DRV_DEBUG
+#define LOG_TAG             "drv.lcd"
+#include <drv_log.h>
+
+#define LCD_DEVICE(dev)     (struct drv_lcd_device*)(dev)
+
+static LTDC_HandleTypeDef LtdcHandle = {0};
+
+struct drv_lcd_device
+{
+    struct rt_device parent;
+
+    struct rt_device_graphic_info lcd_info;
+
+    struct rt_semaphore lcd_lock;
+
+    /* 0:front_buf is being used 1: back_buf is being used*/
+    rt_uint8_t cur_buf;
+    rt_uint8_t *front_buf;
+    rt_uint8_t *back_buf;
+};
+
+struct drv_lcd_device _lcd;
+
+static rt_err_t drv_lcd_init(struct rt_device *device)
+{
+    struct drv_lcd_device *lcd = LCD_DEVICE(device);
+    /* nothing, right now */
+    lcd = lcd;
+    return RT_EOK;
+}
+
+static rt_err_t drv_lcd_control(struct rt_device *device, int cmd, void *args)
+{
+    struct drv_lcd_device *lcd = LCD_DEVICE(device);
+
+    switch (cmd)
+    {
+    case RTGRAPHIC_CTRL_RECT_UPDATE:
+    {
+        /* update */
+        if (_lcd.cur_buf)
+        {
+            /* back_buf is being used */
+            memcpy(_lcd.front_buf, _lcd.lcd_info.framebuffer, LCD_BUF_SIZE);
+            /* Configure the color frame buffer start address */
+            LTDC_LAYER(&LtdcHandle, 0)->CFBAR &= ~(LTDC_LxCFBAR_CFBADD);
+            LTDC_LAYER(&LtdcHandle, 0)->CFBAR = (uint32_t)(_lcd.front_buf);
+            _lcd.cur_buf = 0;
+        }
+        else
+        {
+            /* front_buf is being used */
+            memcpy(_lcd.back_buf, _lcd.lcd_info.framebuffer, LCD_BUF_SIZE);
+            /* Configure the color frame buffer start address */
+            LTDC_LAYER(&LtdcHandle, 0)->CFBAR &= ~(LTDC_LxCFBAR_CFBADD);
+            LTDC_LAYER(&LtdcHandle, 0)->CFBAR = (uint32_t)(_lcd.back_buf);
+            _lcd.cur_buf = 1;
+        }
+        rt_sem_take(&_lcd.lcd_lock, RT_TICK_PER_SECOND / 20);
+        HAL_LTDC_Relaod(&LtdcHandle, LTDC_SRCR_VBR);
+    }
+    break;
+
+    case RTGRAPHIC_CTRL_GET_INFO:
+    {
+        struct rt_device_graphic_info *info = (struct rt_device_graphic_info *)args;
+
+        RT_ASSERT(info != RT_NULL);
+        info->pixel_format  = lcd->lcd_info.pixel_format;
+        info->bits_per_pixel = 16;
+        info->width         = lcd->lcd_info.width;
+        info->height        = lcd->lcd_info.height;
+        info->framebuffer   = lcd->lcd_info.framebuffer;
+    }
+    break;
+    }
+
+    return RT_EOK;
+}
+
+void HAL_LTDC_ReloadEventCallback(LTDC_HandleTypeDef *hltdc)
+{
+    /* emable line interupt */
+    __HAL_LTDC_ENABLE_IT(&LtdcHandle, LTDC_IER_LIE);
+}
+
+void HAL_LTDC_LineEventCallback(LTDC_HandleTypeDef *hltdc)
+{
+    rt_sem_release(&_lcd.lcd_lock);
+}
+
+void LTDC_IRQHandler(void)
+{
+    rt_enter_critical();
+
+    HAL_LTDC_IRQHandler(&LtdcHandle);
+
+    rt_exit_critical();
+}
+
+rt_err_t stm32_lcd_init(struct drv_lcd_device *lcd)
+{
+    LTDC_LayerCfgTypeDef pLayerCfg = {0};
+
+    /* LTDC Initialization -------------------------------------------------------*/
+
+    /* Polarity configuration */
+    /* Initialize the horizontal synchronization polarity as active low */
+    LtdcHandle.Init.HSPolarity = LTDC_HSPOLARITY_AL;
+    /* Initialize the vertical synchronization polarity as active low */
+    LtdcHandle.Init.VSPolarity = LTDC_VSPOLARITY_AL;
+    /* Initialize the data enable polarity as active low */
+    LtdcHandle.Init.DEPolarity = LTDC_DEPOLARITY_AL;
+    /* Initialize the pixel clock polarity as input pixel clock */
+    LtdcHandle.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
+
+    /* Timing configuration */
+    /* Horizontal synchronization width = Hsync - 1 */
+    LtdcHandle.Init.HorizontalSync = LCD_HSYNC_WIDTH - 1;
+    /* Vertical synchronization height = Vsync - 1 */
+    LtdcHandle.Init.VerticalSync = LCD_VSYNC_HEIGHT - 1;
+    /* Accumulated horizontal back porch = Hsync + HBP - 1 */
+    LtdcHandle.Init.AccumulatedHBP = LCD_HSYNC_WIDTH + LCD_HBP - 1;
+    /* Accumulated vertical back porch = Vsync + VBP - 1 */
+    LtdcHandle.Init.AccumulatedVBP = LCD_VSYNC_HEIGHT + LCD_VBP - 1;
+    /* Accumulated active width = Hsync + HBP + Active Width - 1 */
+    LtdcHandle.Init.AccumulatedActiveW = LCD_HSYNC_WIDTH + LCD_HBP + lcd->lcd_info.width - 1 ;
+    /* Accumulated active height = Vsync + VBP + Active Heigh - 1 */
+    LtdcHandle.Init.AccumulatedActiveH = LCD_VSYNC_HEIGHT + LCD_VBP + lcd->lcd_info.height - 1;
+    /* Total height = Vsync + VBP + Active Heigh + VFP - 1 */
+    LtdcHandle.Init.TotalHeigh = LtdcHandle.Init.AccumulatedActiveH + LCD_VFP;
+    /* Total width = Hsync + HBP + Active Width + HFP - 1 */
+    LtdcHandle.Init.TotalWidth = LtdcHandle.Init.AccumulatedActiveW + LCD_HFP;
+
+    /* Configure R,G,B component values for LCD background color */
+    LtdcHandle.Init.Backcolor.Blue = 0;
+    LtdcHandle.Init.Backcolor.Green = 0;
+    LtdcHandle.Init.Backcolor.Red = 0;
+
+    LtdcHandle.Instance = LTDC;
+
+    /* Layer1 Configuration ------------------------------------------------------*/
+
+    /* Windowing configuration */
+    pLayerCfg.WindowX0 = 0;
+    pLayerCfg.WindowX1 = lcd->lcd_info.width;
+    pLayerCfg.WindowY0 = 0;
+    pLayerCfg.WindowY1 = lcd->lcd_info.height;
+
+    /* Pixel Format configuration*/
+    if (lcd->lcd_info.pixel_format == RTGRAPHIC_PIXEL_FORMAT_RGB565)
+    {
+        pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
+    }
+    else if (lcd->lcd_info.pixel_format == RTGRAPHIC_PIXEL_FORMAT_ARGB888)
+    {
+        pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_ARGB8888;
+    }
+    else if (lcd->lcd_info.pixel_format == RTGRAPHIC_PIXEL_FORMAT_RGB888)
+    {
+        pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB888;
+    }
+    else if (lcd->lcd_info.pixel_format == RTGRAPHIC_PIXEL_FORMAT_RGB888)
+    {
+        pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB888;
+    }
+    else
+    {
+        LOG_E("unsupported pixel format");
+        return -RT_ERROR;
+    }
+
+    /* Start Address configuration : frame buffer is located at FLASH memory */
+    pLayerCfg.FBStartAdress = (uint32_t)lcd->front_buf;
+
+    /* Alpha constant (255 totally opaque) */
+    pLayerCfg.Alpha = 255;
+
+    /* Default Color configuration (configure A,R,G,B component values) */
+    pLayerCfg.Alpha0 = 255;
+    pLayerCfg.Backcolor.Blue = 0;
+    pLayerCfg.Backcolor.Green = 0;
+    pLayerCfg.Backcolor.Red = 0;
+
+    /* Configure blending factors */
+    /* Constant Alpha value:  pLayerCfg.Alpha / 255
+       C: Current Layer Color
+       Cs: Background color
+       BC = Constant Alpha x C + (1 - Constant Alpha ) x Cs */
+    /* BlendingFactor1: Pixel Alpha x Constant Alpha */
+    pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_CA;
+    /* BlendingFactor2: 1 - (Pixel Alpha x Constant Alpha) */
+    pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
+
+    /* Configure the number of lines and number of pixels per line */
+    pLayerCfg.ImageWidth = lcd->lcd_info.width;
+    pLayerCfg.ImageHeight = lcd->lcd_info.height;
+
+    /* Configure the LTDC */
+    if (HAL_LTDC_Init(&LtdcHandle) != HAL_OK)
+    {
+        LOG_E("LTDC init failed");
+        return -RT_ERROR;
+    }
+
+    /* Configure the Background Layer*/
+    if (HAL_LTDC_ConfigLayer(&LtdcHandle, &pLayerCfg, 0) != HAL_OK)
+    {
+        LOG_E("LTDC layer init failed");
+        return -RT_ERROR;
+    }
+    else
+    {
+        /* enable LTDC interrupt */
+        HAL_NVIC_SetPriority(LTDC_IRQn, 1, 0);
+        HAL_NVIC_EnableIRQ(LTDC_IRQn);
+        LOG_D("LTDC init success");
+        return RT_EOK;
+    }
+}
+#if defined(LCD_BACKLIGHT_USING_PWM)
+void turn_on_lcd_backlight(void)
+{
+    struct rt_device_pwm *pwm_dev;
+
+    /* turn on the LCD backlight */
+    pwm_dev = (struct rt_device_pwm *)rt_device_find(PWM_DEV_NAME);
+    /* pwm frequency:100K = 10000ns */
+    rt_pwm_set(pwm_dev, PWM_DEV_CHANNEL, 10000, 10000);
+    rt_pwm_enable(pwm_dev, PWM_DEV_CHANNEL);
+}
+#elif defined(LCD_BACKLIGHT_USING_GPIO)
+void turn_on_lcd_backlight(void)
+{
+    rt_pin_mode(LCD_BL_GPIO_NUM, PIN_MODE_OUTPUT);
+    rt_pin_mode(LCD_DISP_GPIO_NUM, PIN_MODE_OUTPUT);
+
+    rt_pin_write(LCD_DISP_GPIO_NUM, PIN_HIGH);
+    rt_pin_write(LCD_BL_GPIO_NUM, PIN_HIGH);
+}
+#endif
+
+#ifdef RT_USING_DEVICE_OPS
+const static struct rt_device_ops lcd_ops =
+{
+    drv_lcd_init,
+    RT_NULL,
+    RT_NULL,
+    RT_NULL,
+    RT_NULL,
+    drv_lcd_control
+};
+#endif
+
+int drv_lcd_hw_init(void)
+{
+    rt_err_t result = RT_EOK;
+    struct rt_device *device = &_lcd.parent;
+
+    /* memset _lcd to zero */
+    memset(&_lcd, 0x00, sizeof(_lcd));
+
+    /* init lcd_lock semaphore */
+    result = rt_sem_init(&_lcd.lcd_lock, "lcd_lock", 0, RT_IPC_FLAG_FIFO);
+    if (result != RT_EOK)
+    {
+        LOG_E("init semaphore failed!\n");
+        result = -RT_ENOMEM;
+        goto __exit;
+    }
+
+    /* config LCD dev info */
+    _lcd.lcd_info.height = LCD_HEIGHT;
+    _lcd.lcd_info.width = LCD_WIDTH;
+    _lcd.lcd_info.bits_per_pixel = LCD_BITS_PER_PIXEL;
+    _lcd.lcd_info.pixel_format = LCD_PIXEL_FORMAT;
+
+    /* malloc memory for Triple Buffering */
+    _lcd.lcd_info.framebuffer = rt_malloc(LCD_BUF_SIZE);
+    _lcd.back_buf = rt_malloc(LCD_BUF_SIZE);
+    _lcd.front_buf = rt_malloc(LCD_BUF_SIZE);
+    if (_lcd.lcd_info.framebuffer == RT_NULL || _lcd.back_buf == RT_NULL || _lcd.front_buf == RT_NULL)
+    {
+        LOG_E("init frame buffer failed!\n");
+        result = -RT_ENOMEM;
+        goto __exit;
+    }
+
+    /* memset buff to 0xFF */
+    memset(_lcd.lcd_info.framebuffer, 0xFF, LCD_BUF_SIZE);
+    memset(_lcd.back_buf, 0xFF, LCD_BUF_SIZE);
+    memset(_lcd.front_buf, 0xFF, LCD_BUF_SIZE);
+
+    device->type    = RT_Device_Class_Graphic;
+#ifdef RT_USING_DEVICE_OPS
+    device->ops     = &lcd_ops;
+#else
+    device->init    = drv_lcd_init;
+    device->control = drv_lcd_control;
+#endif
+
+    /* register lcd device */
+    rt_device_register(device, "lcd", RT_DEVICE_FLAG_RDWR);
+
+    /* init stm32 LTDC */
+    if (stm32_lcd_init(&_lcd) != RT_EOK)
+    {
+        result = -RT_ERROR;
+        goto __exit;
+    }
+    else
+    {
+        turn_on_lcd_backlight();
+    }
+
+__exit:
+    if (result != RT_EOK)
+    {
+        rt_sem_delete(&_lcd.lcd_lock);
+
+        if (_lcd.lcd_info.framebuffer)
+        {
+            rt_free(_lcd.lcd_info.framebuffer);
+        }
+
+        if (_lcd.back_buf)
+        {
+            rt_free(_lcd.back_buf);
+        }
+
+        if (_lcd.front_buf)
+        {
+            rt_free(_lcd.front_buf);
+        }
+    }
+    return result;
+}
+INIT_DEVICE_EXPORT(drv_lcd_hw_init);
+
+#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)
+    {
+        /* 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;
+        }
+        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 */

bsp/stm32/libraries/HAL_Drivers/drv_sdram.c

@@ -5,7 +5,7 @@
  *
  * Change Logs:
  * Date           Author       Notes
- * 2018-12-04     zylx         The first version for STM32F4xx
+ * 2018-12-04     zylx         first version
  */
 
 #include <rtthread.h>

bsp/stm32/libraries/STM32F4xx_HAL/SConscript

@@ -84,13 +84,14 @@ if GetDepend(['RT_USING_MTD_NOR']):
 if GetDepend(['RT_USING_MTD_NAND']):
     src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_nand.c']
 
-if GetDepend(['BSP_USING_SDRAM']):
+if GetDepend(['BSP_USING_FMC']):
     src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_fmc.c']
     src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_fsmc.c']
+
+if GetDepend(['BSP_USING_SDRAM']):
     src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sdram.c']
 
 if GetDepend(['BSP_USING_EXT_FMC_IO']):
-    src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_fmc.c']
     src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_sram.c']
 
 if GetDepend(['BSP_USING_ON_CHIP_FLASH']):
@@ -98,6 +99,12 @@ if GetDepend(['BSP_USING_ON_CHIP_FLASH']):
     src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_flash_ex.c']
     src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_flash_ramfunc.c']
 
+if GetDepend(['BSP_USING_LTDC']):
+    src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_ltdc.c']
+    src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_ltdc_ex.c']
+    src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma2d.c']
+    src += ['STM32F4xx_HAL_Driver/Src/stm32f4xx_ll_dma2d.c']
+
 path = [cwd + '/STM32F4xx_HAL_Driver/Inc',
     cwd + '/CMSIS/Device/ST/STM32F4xx/Include',
     cwd + '/CMSIS/Include']