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3260ba3161164c577a905cdf363eda31a05d021e
TencentOS-tiny/board/STM32F746NGH6_discovery/BSP/hal_stm_lvgl/tft/tft.c
supowang 3260ba3161 add LittlevGL demo 
add LittlevGL demo on stm32f746 discovery board
2019-10-12 14:57:31 +08:00

676 lines
22 KiB
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/**
* @file tft.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_conf.h"
#include "lvgl/lvgl.h"
#include <string.h>
#include <stdlib.h>
#include "tft.h"
#include "stm32f7xx.h"
#include "stm32746g_discovery.h"
#include "stm32746g_discovery_sdram.h"
#include "stm32746g_discovery_ts.h"
#include "../Components/rk043fn48h/rk043fn48h.h"
/*********************
* DEFINES
*********************/
#if LV_COLOR_DEPTH != 16 && LV_COLOR_DEPTH != 24 && LV_COLOR_DEPTH != 32
#error LV_COLOR_DEPTH must be 16, 24, or 32
#endif
/**
* @brief LCD status structure definition
*/
#define LCD_OK ((uint8_t)0x00)
#define LCD_ERROR ((uint8_t)0x01)
#define LCD_TIMEOUT ((uint8_t)0x02)
/**
* @brief LCD special pins
*/
/* Display enable pin */
#define LCD_DISP_PIN GPIO_PIN_12
#define LCD_DISP_GPIO_PORT GPIOI
#define LCD_DISP_GPIO_CLK_ENABLE() __HAL_RCC_GPIOI_CLK_ENABLE()
#define LCD_DISP_GPIO_CLK_DISABLE() __HAL_RCC_GPIOI_CLK_DISABLE()
/* Backlight control pin */
#define LCD_BL_CTRL_PIN GPIO_PIN_3
#define LCD_BL_CTRL_GPIO_PORT GPIOK
#define LCD_BL_CTRL_GPIO_CLK_ENABLE() __HAL_RCC_GPIOK_CLK_ENABLE()
#define LCD_BL_CTRL_GPIO_CLK_DISABLE() __HAL_RCC_GPIOK_CLK_DISABLE()
#define CPY_BUF_DMA_STREAM DMA2_Stream0
#define CPY_BUF_DMA_CHANNEL DMA_CHANNEL_0
#define CPY_BUF_DMA_STREAM_IRQ DMA2_Stream0_IRQn
#define CPY_BUF_DMA_STREAM_IRQHANDLER DMA2_Stream0_IRQHandler
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/*These 3 functions are needed by LittlevGL*/
static void ex_disp_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t * color_p);
#if LV_USE_GPU
static void gpu_mem_blend(lv_disp_drv_t *disp_drv, lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa);
static void gpu_mem_fill(lv_disp_drv_t *disp_drv, lv_color_t * dest_buf, lv_coord_t dest_width, const lv_area_t * fill_area, lv_color_t color);
#endif
static uint8_t LCD_Init(void);
static void LCD_LayerRgb565Init(uint32_t FB_Address);
static void LCD_DisplayOn(void);
static void DMA_Config(void);
static void DMA_TransferComplete(DMA_HandleTypeDef *han);
static void DMA_TransferError(DMA_HandleTypeDef *han);
#if LV_USE_GPU
static void DMA2D_Config(void);
#endif
/**********************
* STATIC VARIABLES
**********************/
#if LV_USE_GPU
static DMA2D_HandleTypeDef Dma2dHandle;
#endif
static LTDC_HandleTypeDef hLtdcHandler;
#if LV_COLOR_DEPTH == 16
typedef uint16_t uintpixel_t;
#elif LV_COLOR_DEPTH == 24 || LV_COLOR_DEPTH == 32
typedef uint32_t uintpixel_t;
#endif
/* You can try to change buffer to internal ram by uncommenting line below and commenting
* SDRAM one. */
//static uintpixel_t my_fb[TFT_HOR_RES * TFT_VER_RES];
static __IO uintpixel_t * my_fb = (__IO uintpixel_t*) (SDRAM_DEVICE_ADDR);
static DMA_HandleTypeDef DmaHandle;
static int32_t x1_flush;
static int32_t y1_flush;
static int32_t x2_flush;
static int32_t y2_fill;
static int32_t y_fill_act;
static const lv_color_t * buf_to_flush;
static lv_disp_t *our_disp = NULL;
/**********************
* MACROS
**********************/
/**
* Initialize your display here
*/
void tft_init(void)
{
/* There is only one display on STM32 */
if(our_disp != NULL)
abort();
/* LCD Initialization */
LCD_Init();
/* LCD Initialization */
LCD_LayerRgb565Init((uint32_t)my_fb);
/* Enable the LCD */
LCD_DisplayOn();
DMA_Config();
#if LV_USE_GPU != 0
DMA2D_Config();
#endif
/*-----------------------------
* Create a buffer for drawing
*----------------------------*/
/* LittlevGL requires a buffer where it draws the objects. The buffer's has to be greater than 1 display row*/
static lv_disp_buf_t disp_buf_1;
static lv_color_t buf1_1[LV_HOR_RES_MAX * 10]; /*A buffer for 10 rows*/
lv_disp_buf_init(&disp_buf_1, buf1_1, NULL, LV_HOR_RES_MAX * 10); /*Initialize the display buffer*/
/*-----------------------------------
* Register the display in LittlevGL
*----------------------------------*/
lv_disp_drv_t disp_drv; /*Descriptor of a display driver*/
lv_disp_drv_init(&disp_drv); /*Basic initialization*/
/*Set up the functions to access to your display*/
/*Set the resolution of the display*/
disp_drv.hor_res = 480;
disp_drv.ver_res = 272;
/*Used to copy the buffer's content to the display*/
disp_drv.flush_cb = ex_disp_flush;
/*Set a display buffer*/
disp_drv.buffer = &disp_buf_1;
#if LV_USE_GPU
/*Optionally add functions to access the GPU. (Only in buffered mode, LV_VDB_SIZE != 0)*/
/*Blend two color array using opacity*/
disp_drv.gpu_blend_cb = gpu_mem_blend;
/*Fill a memory array with a color*/
disp_drv.gpu_fill_cb = gpu_mem_fill;
#endif
/*Finally register the driver*/
our_disp = lv_disp_drv_register(&disp_drv);
}
/**********************
* STATIC FUNCTIONS
**********************/
/* Flush the content of the internal buffer the specific area on the display
* You can use DMA or any hardware acceleration to do this operation in the background but
* 'lv_flush_ready()' has to be called when finished
* This function is required only when LV_VDB_SIZE != 0 in lv_conf.h*/
static void ex_disp_flush(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t * color_p)
{
int32_t x1 = area->x1;
int32_t x2 = area->x2;
int32_t y1 = area->y1;
int32_t y2 = area->y2;
/*Return if the area is out the screen*/
if(x2 < 0) return;
if(y2 < 0) return;
if(x1 > TFT_HOR_RES - 1) return;
if(y1 > TFT_VER_RES - 1) return;
/*Truncate the area to the screen*/
int32_t act_x1 = x1 < 0 ? 0 : x1;
int32_t act_y1 = y1 < 0 ? 0 : y1;
int32_t act_x2 = x2 > TFT_HOR_RES - 1 ? TFT_HOR_RES - 1 : x2;
int32_t act_y2 = y2 > TFT_VER_RES - 1 ? TFT_VER_RES - 1 : y2;
x1_flush = act_x1;
y1_flush = act_y1;
x2_flush = act_x2;
y2_fill = act_y2;
y_fill_act = act_y1;
buf_to_flush = color_p;
/*##-7- Start the DMA transfer using the interrupt mode #*/
/* Configure the source, destination and buffer size DMA fields and Start DMA Stream transfer */
/* Enable All the DMA interrupts */
HAL_StatusTypeDef err;
uint32_t length = (x2_flush - x1_flush + 1);
#if LV_COLOR_DEPTH == 24 || LV_COLOR_DEPTH == 32
length *= 2; /* STM32 DMA uses 16-bit chunks so multiply by 2 for 32-bit color */
#endif
err = HAL_DMA_Start_IT(&DmaHandle,(uint32_t)buf_to_flush, (uint32_t)&my_fb[y_fill_act * TFT_HOR_RES + x1_flush],
length);
if(err != HAL_OK)
{
while(1); /*Halt on error*/
}
}
#if LV_USE_GPU != 0
/**
* Copy pixels to destination memory using opacity
* @param dest a memory address. Copy 'src' here.
* @param src pointer to pixel map. Copy it to 'dest'.
* @param length number of pixels in 'src'
* @param opa opacity (0, OPA_TRANSP: transparent ... 255, OPA_COVER, fully cover)
*/
static void gpu_mem_blend(lv_disp_drv_t *disp_drv, lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa)
{
/*Wait for the previous operation*/
HAL_DMA2D_PollForTransfer(&Dma2dHandle, 100);
Dma2dHandle.Init.Mode = DMA2D_M2M_BLEND;
/* DMA2D Initialization */
if(HAL_DMA2D_Init(&Dma2dHandle) != HAL_OK)
{
/* Initialization Error */
while(1);
}
Dma2dHandle.LayerCfg[1].InputAlpha = opa;
HAL_DMA2D_ConfigLayer(&Dma2dHandle, 1);
HAL_DMA2D_BlendingStart(&Dma2dHandle, (uint32_t) src, (uint32_t) dest, (uint32_t)dest, length, 1);
}
/**
* Copy pixels to destination memory using opacity
* @param dest a memory address. Copy 'src' here.
* @param src pointer to pixel map. Copy it to 'dest'.
* @param length number of pixels in 'src'
* @param opa opacity (0, OPA_TRANSP: transparent ... 255, OPA_COVER, fully cover)
*/
static void gpu_mem_fill(lv_disp_drv_t *disp_drv, lv_color_t * dest_buf, lv_coord_t dest_width,
const lv_area_t * fill_area, lv_color_t color)
{
/*Wait for the previous operation*/
HAL_DMA2D_PollForTransfer(&Dma2dHandle, 100);
Dma2dHandle.Init.Mode = DMA2D_R2M;
/* DMA2D Initialization */
if(HAL_DMA2D_Init(&Dma2dHandle) != HAL_OK)
{
/* Initialization Error */
while(1);
}
Dma2dHandle.LayerCfg[1].InputAlpha = 0xff;
HAL_DMA2D_ConfigLayer(&Dma2dHandle, 1);
lv_color_t * dest_buf_ofs = dest_buf;
dest_buf_ofs += dest_width * fill_area->y1;
dest_buf_ofs += fill_area->x1;
lv_coord_t area_w = lv_area_get_width(fill_area);
uint32_t i;
for(i = fill_area->y1; i <= fill_area->y2; i++) {
/*Wait for the previous operation*/
HAL_DMA2D_PollForTransfer(&Dma2dHandle, 100);
HAL_DMA2D_BlendingStart(&Dma2dHandle, (uint32_t) lv_color_to32(color), (uint32_t) dest_buf_ofs, (uint32_t)dest_buf_ofs, area_w, 1);
dest_buf_ofs += dest_width;
}
}
#endif
/**
* @brief Configure LCD pins, and peripheral clocks.
*/
static void LCD_MspInit(void)
{
GPIO_InitTypeDef gpio_init_structure;
/* Enable the LTDC and DMA2D clocks */
__HAL_RCC_LTDC_CLK_ENABLE();
#if LV_USE_GPU != 0
__HAL_RCC_DMA2D_CLK_ENABLE();
#endif
/* Enable GPIOs clock */
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOG_CLK_ENABLE();
__HAL_RCC_GPIOI_CLK_ENABLE();
__HAL_RCC_GPIOJ_CLK_ENABLE();
__HAL_RCC_GPIOK_CLK_ENABLE();
LCD_DISP_GPIO_CLK_ENABLE();
LCD_BL_CTRL_GPIO_CLK_ENABLE();
/*** LTDC Pins configuration ***/
/* GPIOE configuration */
gpio_init_structure.Pin = GPIO_PIN_4;
gpio_init_structure.Mode = GPIO_MODE_AF_PP;
gpio_init_structure.Pull = GPIO_NOPULL;
gpio_init_structure.Speed = GPIO_SPEED_FAST;
gpio_init_structure.Alternate = GPIO_AF14_LTDC;
HAL_GPIO_Init(GPIOE, &gpio_init_structure);
/* GPIOG configuration */
gpio_init_structure.Pin = GPIO_PIN_12;
gpio_init_structure.Mode = GPIO_MODE_AF_PP;
gpio_init_structure.Alternate = GPIO_AF9_LTDC;
HAL_GPIO_Init(GPIOG, &gpio_init_structure);
/* GPIOI LTDC alternate configuration */
gpio_init_structure.Pin = GPIO_PIN_9 | GPIO_PIN_10 | \
GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
gpio_init_structure.Mode = GPIO_MODE_AF_PP;
gpio_init_structure.Alternate = GPIO_AF14_LTDC;
HAL_GPIO_Init(GPIOI, &gpio_init_structure);
/* GPIOJ configuration */
gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | \
GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7 | \
GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | \
GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
gpio_init_structure.Mode = GPIO_MODE_AF_PP;
gpio_init_structure.Alternate = GPIO_AF14_LTDC;
HAL_GPIO_Init(GPIOJ, &gpio_init_structure);
/* GPIOK configuration */
gpio_init_structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_4 | \
GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7;
gpio_init_structure.Mode = GPIO_MODE_AF_PP;
gpio_init_structure.Alternate = GPIO_AF14_LTDC;
HAL_GPIO_Init(GPIOK, &gpio_init_structure);
/* LCD_DISP GPIO configuration */
gpio_init_structure.Pin = LCD_DISP_PIN; /* LCD_DISP pin has to be manually controlled */
gpio_init_structure.Mode = GPIO_MODE_OUTPUT_PP;
HAL_GPIO_Init(LCD_DISP_GPIO_PORT, &gpio_init_structure);
/* LCD_BL_CTRL GPIO configuration */
gpio_init_structure.Pin = LCD_BL_CTRL_PIN; /* LCD_BL_CTRL pin has to be manually controlled */
gpio_init_structure.Mode = GPIO_MODE_OUTPUT_PP;
HAL_GPIO_Init(LCD_BL_CTRL_GPIO_PORT, &gpio_init_structure);
}
/**
* @brief Configure LTDC PLL.
*/
static void LCD_ClockConfig(void)
{
static RCC_PeriphCLKInitTypeDef periph_clk_init_struct;
/* RK043FN48H LCD clock configuration */
/* PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 Mhz */
/* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN = 192 Mhz */
/* PLLLCDCLK = PLLSAI_VCO Output/PLLSAIR = 192/5 = 38.4 Mhz */
/* LTDC clock frequency = PLLLCDCLK / LTDC_PLLSAI_DIVR_4 = 38.4/4 = 9.6Mhz */
periph_clk_init_struct.PeriphClockSelection = RCC_PERIPHCLK_LTDC;
periph_clk_init_struct.PLLSAI.PLLSAIN = 192;
periph_clk_init_struct.PLLSAI.PLLSAIR = RK043FN48H_FREQUENCY_DIVIDER;
periph_clk_init_struct.PLLSAIDivR = RCC_PLLSAIDIVR_4;
HAL_RCCEx_PeriphCLKConfig(&periph_clk_init_struct);
}
/**
* @brief Initializes the LCD.
* @retval LCD state
*/
static uint8_t LCD_Init(void)
{
/* Select the used LCD */
/* The RK043FN48H LCD 480x272 is selected */
/* Timing Configuration */
hLtdcHandler.Init.HorizontalSync = (RK043FN48H_HSYNC - 1);
hLtdcHandler.Init.VerticalSync = (RK043FN48H_VSYNC - 1);
hLtdcHandler.Init.AccumulatedHBP = (RK043FN48H_HSYNC + RK043FN48H_HBP - 1);
hLtdcHandler.Init.AccumulatedVBP = (RK043FN48H_VSYNC + RK043FN48H_VBP - 1);
hLtdcHandler.Init.AccumulatedActiveH = (RK043FN48H_HEIGHT + RK043FN48H_VSYNC + RK043FN48H_VBP - 1);
hLtdcHandler.Init.AccumulatedActiveW = (RK043FN48H_WIDTH + RK043FN48H_HSYNC + RK043FN48H_HBP - 1);
hLtdcHandler.Init.TotalHeigh = (RK043FN48H_HEIGHT + RK043FN48H_VSYNC + RK043FN48H_VBP + RK043FN48H_VFP - 1);
hLtdcHandler.Init.TotalWidth = (RK043FN48H_WIDTH + RK043FN48H_HSYNC + RK043FN48H_HBP + RK043FN48H_HFP - 1);
/* LCD clock configuration */
LCD_ClockConfig();
/* Initialize the LCD pixel width and pixel height */
hLtdcHandler.LayerCfg->ImageWidth = RK043FN48H_WIDTH;
hLtdcHandler.LayerCfg->ImageHeight = RK043FN48H_HEIGHT;
/* Background value */
hLtdcHandler.Init.Backcolor.Blue = 0;
hLtdcHandler.Init.Backcolor.Green = 0;
hLtdcHandler.Init.Backcolor.Red = 0;
/* Polarity */
hLtdcHandler.Init.HSPolarity = LTDC_HSPOLARITY_AL;
hLtdcHandler.Init.VSPolarity = LTDC_VSPOLARITY_AL;
hLtdcHandler.Init.DEPolarity = LTDC_DEPOLARITY_AL;
hLtdcHandler.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
hLtdcHandler.Instance = LTDC;
if(HAL_LTDC_GetState(&hLtdcHandler) == HAL_LTDC_STATE_RESET)
{
/* Initialize the LCD Msp: this __weak function can be rewritten by the application */
LCD_MspInit();
}
HAL_LTDC_Init(&hLtdcHandler);
/* Assert display enable LCD_DISP pin */
HAL_GPIO_WritePin(LCD_DISP_GPIO_PORT, LCD_DISP_PIN, GPIO_PIN_SET);
/* Assert backlight LCD_BL_CTRL pin */
HAL_GPIO_WritePin(LCD_BL_CTRL_GPIO_PORT, LCD_BL_CTRL_PIN, GPIO_PIN_SET);
BSP_SDRAM_Init();
uint32_t i;
for(i = 0; i < (TFT_HOR_RES * TFT_VER_RES) ; i++)
{
my_fb[i] = 0;
}
return LCD_OK;
}
static void LCD_LayerRgb565Init(uint32_t FB_Address)
{
LTDC_LayerCfgTypeDef layer_cfg;
/* Layer Init */
layer_cfg.WindowX0 = 0;
layer_cfg.WindowX1 = TFT_HOR_RES;
layer_cfg.WindowY0 = 0;
layer_cfg.WindowY1 = TFT_VER_RES;
#if LV_COLOR_DEPTH == 16
layer_cfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
#elif LV_COLOR_DEPTH == 24 || LV_COLOR_DEPTH == 32
layer_cfg.PixelFormat = LTDC_PIXEL_FORMAT_ARGB8888;
#else
#error Unsupported color depth (see tft.c)
#endif
layer_cfg.FBStartAdress = FB_Address;
layer_cfg.Alpha = 255;
layer_cfg.Alpha0 = 0;
layer_cfg.Backcolor.Blue = 0;
layer_cfg.Backcolor.Green = 0;
layer_cfg.Backcolor.Red = 0;
layer_cfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
layer_cfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
layer_cfg.ImageWidth = TFT_HOR_RES;
layer_cfg.ImageHeight = TFT_VER_RES;
HAL_LTDC_ConfigLayer(&hLtdcHandler, &layer_cfg, 0);
}
static void LCD_DisplayOn(void)
{
/* Display On */
__HAL_LTDC_ENABLE(&hLtdcHandler);
HAL_GPIO_WritePin(LCD_DISP_GPIO_PORT, LCD_DISP_PIN, GPIO_PIN_SET); /* Assert LCD_DISP pin */
HAL_GPIO_WritePin(LCD_BL_CTRL_GPIO_PORT, LCD_BL_CTRL_PIN, GPIO_PIN_SET); /* Assert LCD_BL_CTRL pin */
}
static void DMA_Config(void)
{
/*## -1- Enable DMA2 clock #################################################*/
__HAL_RCC_DMA2_CLK_ENABLE();
/*##-2- Select the DMA functional Parameters ###############################*/
DmaHandle.Init.Channel = CPY_BUF_DMA_CHANNEL; /* DMA_CHANNEL_0 */
DmaHandle.Init.Direction = DMA_MEMORY_TO_MEMORY; /* M2M transfer mode */
DmaHandle.Init.PeriphInc = DMA_PINC_ENABLE; /* Peripheral increment mode Enable */
DmaHandle.Init.MemInc = DMA_MINC_ENABLE; /* Memory increment mode Enable */
DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD; /* Peripheral data alignment : 16bit */
DmaHandle.Init.MemDataAlignment = DMA_PDATAALIGN_HALFWORD; /* memory data alignment : 16bit */
DmaHandle.Init.Mode = DMA_NORMAL; /* Normal DMA mode */
DmaHandle.Init.Priority = DMA_PRIORITY_HIGH; /* priority level : high */
DmaHandle.Init.FIFOMode = DMA_FIFOMODE_ENABLE; /* FIFO mode enabled */
DmaHandle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_1QUARTERFULL; /* FIFO threshold: 1/4 full */
DmaHandle.Init.MemBurst = DMA_MBURST_SINGLE; /* Memory burst */
DmaHandle.Init.PeriphBurst = DMA_PBURST_SINGLE; /* Peripheral burst */
/*##-3- Select the DMA instance to be used for the transfer : DMA2_Stream0 #*/
DmaHandle.Instance = CPY_BUF_DMA_STREAM;
/*##-4- Initialize the DMA stream ##########################################*/
if(HAL_DMA_Init(&DmaHandle) != HAL_OK)
{
while(1)
{
}
}
/*##-5- Select Callbacks functions called after Transfer complete and Transfer error */
HAL_DMA_RegisterCallback(&DmaHandle, HAL_DMA_XFER_CPLT_CB_ID, DMA_TransferComplete);
HAL_DMA_RegisterCallback(&DmaHandle, HAL_DMA_XFER_ERROR_CB_ID, DMA_TransferError);
/*##-6- Configure NVIC for DMA transfer complete/error interrupts ##########*/
HAL_NVIC_SetPriority(CPY_BUF_DMA_STREAM_IRQ, 0, 0);
HAL_NVIC_EnableIRQ(CPY_BUF_DMA_STREAM_IRQ);
}
/**
* @brief DMA conversion complete callback
* @note This function is executed when the transfer complete interrupt
* is generated
* @retval None
*/
static void DMA_TransferComplete(DMA_HandleTypeDef *han)
{
y_fill_act ++;
if(y_fill_act > y2_fill) {
lv_disp_flush_ready(&our_disp->driver);
} else {
uint32_t length = (x2_flush - x1_flush + 1);
buf_to_flush += x2_flush - x1_flush + 1;
/*##-7- Start the DMA transfer using the interrupt mode ####################*/
/* Configure the source, destination and buffer size DMA fields and Start DMA Stream transfer */
/* Enable All the DMA interrupts */
#if LV_COLOR_DEPTH == 24 || LV_COLOR_DEPTH == 32
length *= 2; /* STM32 DMA uses 16-bit chunks so multiply by 2 for 32-bit color */
#endif
if(HAL_DMA_Start_IT(han,(uint32_t)buf_to_flush, (uint32_t)&my_fb[y_fill_act * TFT_HOR_RES + x1_flush],
length) != HAL_OK)
{
while(1); /*Halt on error*/
}
}
}
/**
* @brief DMA conversion error callback
* @note This function is executed when the transfer error interrupt
* is generated during DMA transfer
* @retval None
*/
static void DMA_TransferError(DMA_HandleTypeDef *han)
{
}
/**
* @brief This function handles DMA Stream interrupt request.
* @param None
* @retval None
*/
void CPY_BUF_DMA_STREAM_IRQHANDLER(void)
{
/* Check the interrupt and clear flag */
HAL_DMA_IRQHandler(&DmaHandle);
}
#if LV_USE_GPU != 0
static void Error_Handler(void)
{
while(1)
{
}
}
/**
* @brief DMA2D Transfer completed callback
* @param hdma2d: DMA2D handle.
* @note This example shows a simple way to report end of DMA2D transfer, and
* you can add your own implementation.
* @retval None
*/
static void DMA2D_TransferComplete(DMA2D_HandleTypeDef *hdma2d)
{
}
/**
* @brief DMA2D error callbacks
* @param hdma2d: DMA2D handle
* @note This example shows a simple way to report DMA2D transfer error, and you can
* add your own implementation.
* @retval None
*/
static void DMA2D_TransferError(DMA2D_HandleTypeDef *hdma2d)
{
}
/**
* @brief DMA2D configuration.
* @note This function Configure the DMA2D peripheral :
* 1) Configure the Transfer mode as memory to memory with blending.
* 2) Configure the output color mode as RGB565 pixel format.
* 3) Configure the foreground
* - first image loaded from FLASH memory
* - constant alpha value (decreased to see the background)
* - color mode as RGB565 pixel format
* 4) Configure the background
* - second image loaded from FLASH memory
* - color mode as RGB565 pixel format
* @retval None
*/
static void DMA2D_Config(void)
{
/* Configure the DMA2D Mode, Color Mode and output offset */
Dma2dHandle.Init.Mode = DMA2D_M2M_BLEND;
#if LV_COLOR_DEPTH == 16
Dma2dHandle.Init.ColorMode = DMA2D_RGB565;
#elif LV_COLOR_DEPTH == 24 || LV_COLOR_DEPTH == 32
Dma2dHandle.Init.ColorMode = DMA2D_ARGB8888;
#endif
Dma2dHandle.Init.OutputOffset = 0x0;
/* DMA2D Callbacks Configuration */
Dma2dHandle.XferCpltCallback = DMA2D_TransferComplete;
Dma2dHandle.XferErrorCallback = DMA2D_TransferError;
/* Foreground Configuration */
Dma2dHandle.LayerCfg[1].AlphaMode = DMA2D_REPLACE_ALPHA;
Dma2dHandle.LayerCfg[1].InputAlpha = 0xFF;
#if LV_COLOR_DEPTH == 16
Dma2dHandle.LayerCfg[1].InputColorMode = DMA2D_INPUT_RGB565;
#elif LV_COLOR_DEPTH == 24 || LV_COLOR_DEPTH == 32
Dma2dHandle.LayerCfg[1].InputColorMode = DMA2D_INPUT_ARGB8888;
#endif
Dma2dHandle.LayerCfg[1].InputOffset = 0x0;
/* Background Configuration */
Dma2dHandle.LayerCfg[0].AlphaMode = DMA2D_REPLACE_ALPHA;
Dma2dHandle.LayerCfg[0].InputAlpha = 0xFF;
#if LV_COLOR_DEPTH == 16
Dma2dHandle.LayerCfg[0].InputColorMode = DMA2D_INPUT_RGB565;
#elif LV_COLOR_DEPTH == 24 || LV_COLOR_DEPTH == 32
Dma2dHandle.LayerCfg[0].InputColorMode = DMA2D_INPUT_ARGB8888;
#endif
Dma2dHandle.LayerCfg[0].InputOffset = 0x0;
Dma2dHandle.Instance = DMA2D;
/* DMA2D Initialization */
if(HAL_DMA2D_Init(&Dma2dHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
HAL_DMA2D_ConfigLayer(&Dma2dHandle, 0);
HAL_DMA2D_ConfigLayer(&Dma2dHandle, 1);
}
#endif
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