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/**
******************************************************************************
* @file LCD_DSI/LCD_DSI_CmdMode_TearingEffect/Src/main.c
* @author MCD Application Team
* @brief This example describes how to configure and use LCD DSI to display an image
* of size WVGA in mode landscape (800x480) using the STM32F4xx HAL API and BSP.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "image_320x240_argb8888.h"
#include "life_augmented_argb8888.h"
#include <string.h>
#include <stdio.h>
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup LCD_DSI_Video_OneLayer
* @{
*/
/* Private typedef -----------------------------------------------------------*/
extern LTDC_HandleTypeDef hltdc_eval;
static DMA2D_HandleTypeDef hdma2d;
extern DSI_HandleTypeDef hdsi_eval;
/* Private define ------------------------------------------------------------*/
#define VSYNC 1
#define VBP 1
#define VFP 1
#define VACT 480
#define HSYNC 1
#define HBP 1
#define HFP 1
#define HACT 400 /* !!!! SCREEN DIVIDED INTO 2 AREAS !!!! */
#define LAYER0_ADDRESS (LCD_FB_START_ADDRESS)
#define LEFT_AREA 1
#define RIGHT_AREA 2
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
static int32_t pending_buffer = -1;
static int32_t active_area = 0;
static uint32_t ImageIndex = 0;
static const uint32_t * Images[] =
{
image_320x240_argb8888,
life_augmented_argb8888,
};
uint8_t pColLeft[] = {0x00, 0x00, 0x01, 0x8F}; /* 0 -> 399 */
uint8_t pColRight[] = {0x01, 0x90, 0x03, 0x1F}; /* 400 -> 799 */
uint8_t pPage[] = {0x00, 0x00, 0x01, 0xDF}; /* 0 -> 479 */
uint8_t pScanCol[] = {0x02, 0x15}; /* Scan @ 533 */
/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
static void OnError_Handler(uint32_t condition);
static void CopyPicture(uint32_t *pSrc,
uint32_t *pDst,
uint16_t x,
uint16_t y,
uint16_t xsize,
uint16_t ysize);
static uint8_t LCD_Init(void);
void LCD_LayertInit(uint16_t LayerIndex, uint32_t Address);
void LTDC_Init(void);
static void LCD_BriefDisplay(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief On Error Handler on condition TRUE.
* @param condition : Can be TRUE or FALSE
* @retval None
*/
static void OnError_Handler(uint32_t condition)
{
if(condition)
{
BSP_LED_On(LED3);
while(1) { ; } /* Blocking on error */
}
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
uint8_t lcd_status = LCD_OK;
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization: global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to 180 MHz */
SystemClock_Config();
/* Initialize the SDRAM */
BSP_SDRAM_Init();
/* Initialize the LCD */
lcd_status = LCD_Init();
OnError_Handler(lcd_status != LCD_OK);
/* Initialize LTDC layer 0 iused for Hint */
LCD_LayertInit(0, LAYER0_ADDRESS);
BSP_LCD_SelectLayer(0);
HAL_DSI_LongWrite(&hdsi_eval, 0, DSI_DCS_LONG_PKT_WRITE, 4, OTM8009A_CMD_CASET, pColLeft);
HAL_DSI_LongWrite(&hdsi_eval, 0, DSI_DCS_LONG_PKT_WRITE, 4, OTM8009A_CMD_PASET, pPage);
/* Update pitch : the draw is done on the whole physical X Size */
HAL_LTDC_SetPitch(&hltdc_eval, BSP_LCD_GetXSize(), 0);
/* Display example brief */
LCD_BriefDisplay();
/* Show first image */
CopyPicture((uint32_t *)Images[ImageIndex++], (uint32_t *)LAYER0_ADDRESS, 240, 160, 320, 240);
pending_buffer = 0;
active_area = LEFT_AREA;
HAL_DSI_LongWrite(&hdsi_eval, 0, DSI_DCS_LONG_PKT_WRITE, 2, OTM8009A_CMD_WRTESCN, pScanCol);
/* Infinite loop */
while (1)
{
if(pending_buffer < 0)
{
CopyPicture((uint32_t *)Images[ImageIndex++], (uint32_t *)LAYER0_ADDRESS, 240, 160, 320, 240);
if(ImageIndex >= 2)
{
ImageIndex = 0;
}
pending_buffer = 1;
HAL_DSI_LongWrite(&hdsi_eval, 0, DSI_DCS_LONG_PKT_WRITE, 2, OTM8009A_CMD_WRTESCN, pScanCol);
}
/* Wait some time before switching to next image */
HAL_Delay(2000);
}
}
/**
* @brief Tearing Effect DSI callback.
* @param hdsi: pointer to a DSI_HandleTypeDef structure that contains
* the configuration information for the DSI.
* @retval None
*/
void HAL_DSI_TearingEffectCallback(DSI_HandleTypeDef *hdsi)
{
/* Mask the TE */
HAL_DSI_ShortWrite(hdsi, 0, DSI_DCS_SHORT_PKT_WRITE_P1, OTM8009A_CMD_TEOFF, 0x00);
/* Refresh the right part of the display */
HAL_DSI_Refresh(hdsi);
}
/**
* @brief End of Refresh DSI callback.
* @param hdsi: pointer to a DSI_HandleTypeDef structure that contains
* the configuration information for the DSI.
* @retval None
*/
void HAL_DSI_EndOfRefreshCallback(DSI_HandleTypeDef *hdsi)
{
if(pending_buffer >= 0)
{
if(active_area == LEFT_AREA)
{
/* Disable DSI Wrapper */
__HAL_DSI_WRAPPER_DISABLE(hdsi);
/* Update LTDC configuration */
LTDC_LAYER(&hltdc_eval, 0)->CFBAR = LAYER0_ADDRESS + 400 * 4;
__HAL_LTDC_RELOAD_IMMEDIATE_CONFIG(&hltdc_eval);
/* Enable DSI Wrapper */
__HAL_DSI_WRAPPER_ENABLE(hdsi);
HAL_DSI_LongWrite(hdsi, 0, DSI_DCS_LONG_PKT_WRITE, 4, OTM8009A_CMD_CASET, pColRight);
/* Refresh the right part of the display */
HAL_DSI_Refresh(hdsi);
}
else if(active_area == RIGHT_AREA)
{
/* Disable DSI Wrapper */
__HAL_DSI_WRAPPER_DISABLE(&hdsi_eval);
/* Update LTDC configuration */
LTDC_LAYER(&hltdc_eval, 0)->CFBAR = LAYER0_ADDRESS;
__HAL_LTDC_RELOAD_IMMEDIATE_CONFIG(&hltdc_eval);
/* Enable DSI Wrapper */
__HAL_DSI_WRAPPER_ENABLE(&hdsi_eval);
HAL_DSI_LongWrite(hdsi, 0, DSI_DCS_LONG_PKT_WRITE, 4, OTM8009A_CMD_CASET, pColLeft);
pending_buffer = -1;
}
}
active_area = (active_area == LEFT_AREA)? RIGHT_AREA : LEFT_AREA;
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 180000000
* HCLK(Hz) = 180000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 8000000
* PLL_M = 8
* PLL_N = 360
* PLL_P = 2
* PLL_Q = 7
* PLL_R = 6
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 5
* @param None
* @retval None
*/
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
/* Enable Power Control clock */
__HAL_RCC_PWR_CLK_ENABLE();
/* The voltage scaling allows optimizing the power consumption when the device is
clocked below the maximum system frequency, to update the voltage scaling value
regarding system frequency refer to product datasheet. */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
#if defined(USE_STM32469I_DISCO_REVA)
RCC_OscInitStruct.PLL.PLLM = 25;
#else
RCC_OscInitStruct.PLL.PLLM = 8;
#endif /* USE_STM32469I_DISCO_REVA */
RCC_OscInitStruct.PLL.PLLN = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
RCC_OscInitStruct.PLL.PLLR = 6;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
while(1) { ; }
}
/* Activate the OverDrive to reach the 180 MHz Frequency */
ret = HAL_PWREx_EnableOverDrive();
if(ret != HAL_OK)
{
while(1) { ; }
}
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
if(ret != HAL_OK)
{
while(1) { ; }
}
}
/**
* @brief Initializes the DSI LCD.
* The ititialization is done as below:
* - DSI PLL ititialization
* - DSI ititialization
* - LTDC ititialization
* - OTM8009A LCD Display IC Driver ititialization
* @param None
* @retval LCD state
*/
static uint8_t LCD_Init(void)
{
static DSI_PHY_TimerTypeDef PhyTimings;
static DSI_CmdCfgTypeDef CmdCfg;
static DSI_LPCmdTypeDef LPCmd;
static DSI_PLLInitTypeDef dsiPllInit;
static RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
/* Toggle Hardware Reset of the DSI LCD using
* its XRES signal (active low) */
BSP_LCD_Reset();
/* Call first MSP Initialize only in case of first initialization
* This will set IP blocks LTDC, DSI and DMA2D
* - out of reset
* - clocked
* - NVIC IRQ related to IP blocks enabled
*/
BSP_LCD_MspInit();
/* LCD clock configuration */
/* PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 Mhz */
/* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN = 417 Mhz */
/* PLLLCDCLK = PLLSAI_VCO Output/PLLSAIR = 417 MHz / 5 = 83.4 MHz */
/* LTDC clock frequency = PLLLCDCLK / LTDC_PLLSAI_DIVR_2 = 83.4 / 2 = 41.7 MHz */
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LTDC;
PeriphClkInitStruct.PLLSAI.PLLSAIN = 417;
PeriphClkInitStruct.PLLSAI.PLLSAIR = 5;
PeriphClkInitStruct.PLLSAIDivR = RCC_PLLSAIDIVR_2;
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
/* Base address of DSI Host/Wrapper registers to be set before calling De-Init */
hdsi_eval.Instance = DSI;
HAL_DSI_DeInit(&(hdsi_eval));
#if defined(USE_STM32469I_DISCO_REVA)
dsiPllInit.PLLNDIV = 100;
dsiPllInit.PLLIDF = DSI_PLL_IN_DIV5;
#else
dsiPllInit.PLLNDIV = 125;
dsiPllInit.PLLIDF = DSI_PLL_IN_DIV2;
#endif /* USE_STM32469I_DISCO_REVA */
dsiPllInit.PLLODF = DSI_PLL_OUT_DIV1;
hdsi_eval.Init.NumberOfLanes = DSI_TWO_DATA_LANES;
hdsi_eval.Init.TXEscapeCkdiv = 0x4;
HAL_DSI_Init(&(hdsi_eval), &(dsiPllInit));
/* Configure the DSI for Command mode */
CmdCfg.VirtualChannelID = 0;
CmdCfg.HSPolarity = DSI_HSYNC_ACTIVE_HIGH;
CmdCfg.VSPolarity = DSI_VSYNC_ACTIVE_HIGH;
CmdCfg.DEPolarity = DSI_DATA_ENABLE_ACTIVE_HIGH;
CmdCfg.ColorCoding = DSI_RGB888;
CmdCfg.CommandSize = HACT;
CmdCfg.TearingEffectSource = DSI_TE_DSILINK;
CmdCfg.TearingEffectPolarity = DSI_TE_RISING_EDGE;
CmdCfg.VSyncPol = DSI_VSYNC_FALLING;
CmdCfg.AutomaticRefresh = DSI_AR_DISABLE;
CmdCfg.TEAcknowledgeRequest = DSI_TE_ACKNOWLEDGE_ENABLE;
HAL_DSI_ConfigAdaptedCommandMode(&hdsi_eval, &CmdCfg);
LPCmd.LPGenShortWriteNoP = DSI_LP_GSW0P_ENABLE;
LPCmd.LPGenShortWriteOneP = DSI_LP_GSW1P_ENABLE;
LPCmd.LPGenShortWriteTwoP = DSI_LP_GSW2P_ENABLE;
LPCmd.LPGenShortReadNoP = DSI_LP_GSR0P_ENABLE;
LPCmd.LPGenShortReadOneP = DSI_LP_GSR1P_ENABLE;
LPCmd.LPGenShortReadTwoP = DSI_LP_GSR2P_ENABLE;
LPCmd.LPGenLongWrite = DSI_LP_GLW_ENABLE;
LPCmd.LPDcsShortWriteNoP = DSI_LP_DSW0P_ENABLE;
LPCmd.LPDcsShortWriteOneP = DSI_LP_DSW1P_ENABLE;
LPCmd.LPDcsShortReadNoP = DSI_LP_DSR0P_ENABLE;
LPCmd.LPDcsLongWrite = DSI_LP_DLW_ENABLE;
HAL_DSI_ConfigCommand(&hdsi_eval, &LPCmd);
/* Configure DSI PHY HS2LP and LP2HS timings */
PhyTimings.ClockLaneHS2LPTime = 35;
PhyTimings.ClockLaneLP2HSTime = 35;
PhyTimings.DataLaneHS2LPTime = 35;
PhyTimings.DataLaneLP2HSTime = 35;
PhyTimings.DataLaneMaxReadTime = 0;
PhyTimings.StopWaitTime = 10;
HAL_DSI_ConfigPhyTimer(&hdsi_eval, &PhyTimings);
/* Initialize LTDC */
LTDC_Init();
/* Start DSI */
HAL_DSI_Start(&(hdsi_eval));
#if defined (USE_STM32469I_DISCO_REVC)
/* Initialize the NT35510 LCD Display IC Driver (3K138 LCD IC Driver) */
NT35510_Init(NT35510_FORMAT_RGB888, LCD_ORIENTATION_LANDSCAPE);
#else
/* Initialize the OTM8009A LCD Display IC Driver (KoD LCD IC Driver) */
OTM8009A_Init(OTM8009A_COLMOD_RGB888, LCD_ORIENTATION_LANDSCAPE);
#endif
LPCmd.LPGenShortWriteNoP = DSI_LP_GSW0P_DISABLE;
LPCmd.LPGenShortWriteOneP = DSI_LP_GSW1P_DISABLE;
LPCmd.LPGenShortWriteTwoP = DSI_LP_GSW2P_DISABLE;
LPCmd.LPGenShortReadNoP = DSI_LP_GSR0P_DISABLE;
LPCmd.LPGenShortReadOneP = DSI_LP_GSR1P_DISABLE;
LPCmd.LPGenShortReadTwoP = DSI_LP_GSR2P_DISABLE;
LPCmd.LPGenLongWrite = DSI_LP_GLW_DISABLE;
LPCmd.LPDcsShortWriteNoP = DSI_LP_DSW0P_DISABLE;
LPCmd.LPDcsShortWriteOneP = DSI_LP_DSW1P_DISABLE;
LPCmd.LPDcsShortReadNoP = DSI_LP_DSR0P_DISABLE;
LPCmd.LPDcsLongWrite = DSI_LP_DLW_DISABLE;
HAL_DSI_ConfigCommand(&hdsi_eval, &LPCmd);
HAL_DSI_ConfigFlowControl(&hdsi_eval, DSI_FLOW_CONTROL_BTA);
/* Refresh the display */
HAL_DSI_Refresh(&hdsi_eval);
return LCD_OK;
}
/**
* @brief Initialize the LTDC
* @param None
* @retval None
*/
void LTDC_Init(void)
{
/* DeInit */
hltdc_eval.Instance = LTDC;
HAL_LTDC_DeInit(&hltdc_eval);
/* LTDC Config */
/* Timing and polarity */
hltdc_eval.Init.HorizontalSync = HSYNC;
hltdc_eval.Init.VerticalSync = VSYNC;
hltdc_eval.Init.AccumulatedHBP = HSYNC+HBP;
hltdc_eval.Init.AccumulatedVBP = VSYNC+VBP;
hltdc_eval.Init.AccumulatedActiveH = VSYNC+VBP+VACT;
hltdc_eval.Init.AccumulatedActiveW = HSYNC+HBP+HACT;
hltdc_eval.Init.TotalHeigh = VSYNC+VBP+VACT+VFP;
hltdc_eval.Init.TotalWidth = HSYNC+HBP+HACT+HFP;
/* background value */
hltdc_eval.Init.Backcolor.Blue = 0;
hltdc_eval.Init.Backcolor.Green = 0;
hltdc_eval.Init.Backcolor.Red = 0;
/* Polarity */
hltdc_eval.Init.HSPolarity = LTDC_HSPOLARITY_AL;
hltdc_eval.Init.VSPolarity = LTDC_VSPOLARITY_AL;
hltdc_eval.Init.DEPolarity = LTDC_DEPOLARITY_AL;
hltdc_eval.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
hltdc_eval.Instance = LTDC;
HAL_LTDC_Init(&hltdc_eval);
}
/**
* @brief Initializes the LCD layers.
* @param LayerIndex: Layer foreground or background
* @param FB_Address: Layer frame buffer
* @retval None
*/
void LCD_LayertInit(uint16_t LayerIndex, uint32_t Address)
{
LCD_LayerCfgTypeDef Layercfg;
/* Layer Init */
Layercfg.WindowX0 = 0;
Layercfg.WindowX1 = BSP_LCD_GetXSize()/2;
Layercfg.WindowY0 = 0;
Layercfg.WindowY1 = BSP_LCD_GetYSize();
Layercfg.PixelFormat = LTDC_PIXEL_FORMAT_ARGB8888;
Layercfg.FBStartAdress = Address;
Layercfg.Alpha = 255;
Layercfg.Alpha0 = 0;
Layercfg.Backcolor.Blue = 0;
Layercfg.Backcolor.Green = 0;
Layercfg.Backcolor.Red = 0;
Layercfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
Layercfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
Layercfg.ImageWidth = BSP_LCD_GetXSize()/2;
Layercfg.ImageHeight = BSP_LCD_GetYSize();
HAL_LTDC_ConfigLayer(&hltdc_eval, &Layercfg, LayerIndex);
}
/**
* @brief Display Example description.
* @param None
* @retval None
*/
static void LCD_BriefDisplay(void)
{
BSP_LCD_SetFont(&Font24);
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
BSP_LCD_FillRect(0, 0, 800, 112);
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_FillRect(0, 112, 800, 368);
BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
BSP_LCD_DisplayStringAtLine(1, (uint8_t *)" LCD_DSI_CmdMode_TearingEffect");
BSP_LCD_SetFont(&Font16);
BSP_LCD_DisplayStringAtLine(4, (uint8_t *)"This example shows how to display images on LCD DSI and prevent");
BSP_LCD_DisplayStringAtLine(5, (uint8_t *)"Tearing Effect");
}
/**
* @brief Converts a line to an ARGB8888 pixel format.
* @param pSrc: Pointer to source buffer
* @param pDst: Output color
* @param xSize: Buffer width
* @param ColorMode: Input color mode
* @retval None
*/
static void CopyPicture(uint32_t *pSrc, uint32_t *pDst, uint16_t x, uint16_t y, uint16_t xsize, uint16_t ysize)
{
uint32_t destination = (uint32_t)pDst + (y * 800 + x) * 4;
uint32_t source = (uint32_t)pSrc;
/*##-1- Configure the DMA2D Mode, Color Mode and output offset #############*/
hdma2d.Init.Mode = DMA2D_M2M;
hdma2d.Init.ColorMode = DMA2D_ARGB8888;
hdma2d.Init.OutputOffset = 800 - xsize;
/*##-2- DMA2D Callbacks Configuration ######################################*/
hdma2d.XferCpltCallback = NULL;
/*##-3- Foreground Configuration ###########################################*/
hdma2d.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA;
hdma2d.LayerCfg[1].InputAlpha = 0xFF;
hdma2d.LayerCfg[1].InputColorMode = DMA2D_INPUT_ARGB8888;
hdma2d.LayerCfg[1].InputOffset = 0;
hdma2d.Instance = DMA2D;
/* DMA2D Initialization */
if(HAL_DMA2D_Init(&hdma2d) == HAL_OK)
{
if(HAL_DMA2D_ConfigLayer(&hdma2d, 1) == HAL_OK)
{
if (HAL_DMA2D_Start(&hdma2d, source, destination, xsize, ysize) == HAL_OK)
{
/* Polling For DMA transfer */
HAL_DMA2D_PollForTransfer(&hdma2d, 100);
}
}
}
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
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