ref: 400b183c480845e1cd2c2f49f74baade00d2653c
dir: /demos/stm32f429_disco/stm/stm32f4_spl/src/stm32f4xx_hal_ltdc.c/
/**
******************************************************************************
* @file stm32f4xx_hal_ltdc.c
* @author MCD Application Team
* @version V1.0.0
* @date 18-February-2014
* @brief LTDC HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the LTDC peripheral:
* + Initialization and de-initialization functions
* + IO operation functions
* + Peripheral Control functions
* + Peripheral State and Errors functions
*
@verbatim
==============================================================================
##### How to use this driver #####
==============================================================================
[..]
(#) Program the required configuration through following parameters:
the LTDC timing, the horizontal and vertical polarity,
the pixel clock polarity, Data Enable polarity and the LTDC background color value
using HAL_LTDC_Init() function
(#) Program the required configuration through following parameters:
the pixel format, the blending factors, input alpha value, the window size
and the image size using HAL_LTDC_ConfigLayer() function for foreground
or/and background layer.
(#) Optionally, configure and enable the CLUT using HAL_LTDC_ConfigCLUT() and
HAL_LTDC_EnableCLUT functions.
(#) Optionally, enable the Dither using HAL_LTDC_EnableDither().
(#) Optionally, configure and enable the Color keying using HAL_LTDC_ConfigColorKeying()
and HAL_LTDC_EnableColorKeying functions.
(#) Optionally, configure LineInterrupt using HAL_LTDC_ProgramLineInterrupt()
function
(#) If needed, Reconfigure and change the pixel format value, the alpha value
value, the window size, the window position and the layer start address
for foreground or/and background layer using respectively the following
functions: HAL_LTDC_SetPixelFormat(), HAL_LTDC_SetAlpha(), HAL_LTDC_SetWindowSize(),
HAL_LTDC_SetWindowPosition(), HAL_LTDC_SetAddress.
(#) To control LTDC state you can use the following function: HAL_LTDC_GetState()
*** LTDC HAL driver macros list ***
=============================================
[..]
Below the list of most used macros in LTDC HAL driver.
(+) __HAL_LTDC_ENABLE: Enable the LTDC.
(+) __HAL_LTDC_DISABLE: Disable the LTDC.
(+) __HAL_LTDC_LAYER_ENABLE: Enable the LTDC Layer.
(+) __HAL_LTDC_LAYER_DISABLE: Disable the LTDC Layer.
(+) __HAL_LTDC_RELOAD_CONFIG: Reload Layer Configuration.
(+) __HAL_LTDC_GET_FLAG: Get the LTDC pending flags.
(+) __HAL_LTDC_CLEAR_FLAG: Clears the LTDC pending flags.
(+) __HAL_LTDC_ENABLE_IT: Enables the specified LTDC interrupts.
(+) __HAL_LTDC_DISABLE_IT: Disables the specified LTDC interrupts.
(+) __HAL_LTDC_GET_IT_SOURCE: Checks whether the specified LTDC interrupt has occurred or not.
[..]
(@) You can refer to the LTDC HAL driver header file for more useful macros
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"
/** @addtogroup STM32F4xx_HAL_Driver
* @{
*/
/** @defgroup LTDC
* @brief LTDC HAL module driver
* @{
*/
#ifdef HAL_LTDC_MODULE_ENABLED
#if defined(STM32F429xx) || defined(STM32F439xx)
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void LTDC_SetConfig(LTDC_HandleTypeDef *hltdc, LTDC_LayerCfgTypeDef *pLayerCfg, uint32_t LayerIdx);
/* Private functions ---------------------------------------------------------*/
/** @defgroup LTDC_Private_Functions
* @{
*/
/** @defgroup LTDC_Group1 Initialization and Configuration functions
* @brief Initialization and Configuration functions
*
@verbatim
===============================================================================
##### Initialization and Configuration functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Initialize and configure the LTDC
(+) De-initialize the LTDC
@endverbatim
* @{
*/
/**
* @brief Initializes the LTDC according to the specified
* parameters in the LTDC_InitTypeDef and create the associated handle.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LTDC_Init(LTDC_HandleTypeDef *hltdc)
{
uint32_t tmp = 0, tmp1 = 0;
/* Check the LTDC peripheral state */
if(hltdc == NULL)
{
return HAL_ERROR;
}
/* Check function parameters */
assert_param(IS_LTDC_ALL_INSTANCE(hltdc->Instance));
assert_param(IS_LTDC_HSYNC(hltdc->Init.HorizontalSync));
assert_param(IS_LTDC_VSYNC(hltdc->Init.VerticalSync));
assert_param(IS_LTDC_AHBP(hltdc->Init.AccumulatedHBP));
assert_param(IS_LTDC_AVBP(hltdc->Init.AccumulatedVBP));
assert_param(IS_LTDC_AAH(hltdc->Init.AccumulatedActiveH));
assert_param(IS_LTDC_AAW(hltdc->Init.AccumulatedActiveW));
assert_param(IS_LTDC_TOTALH(hltdc->Init.TotalHeigh));
assert_param(IS_LTDC_TOTALW(hltdc->Init.TotalWidth));
assert_param(IS_LTDC_HSPOL(hltdc->Init.HSPolarity));
assert_param(IS_LTDC_VSPOL(hltdc->Init.VSPolarity));
assert_param(IS_LTDC_DEPOL(hltdc->Init.DEPolarity));
assert_param(IS_LTDC_PCPOL(hltdc->Init.PCPolarity));
if(hltdc->State == HAL_LTDC_STATE_RESET)
{
/* Init the low level hardware */
HAL_LTDC_MspInit(hltdc);
}
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Configures the HS, VS, DE and PC polarity */
hltdc->Instance->GCR &= ~(LTDC_GCR_HSPOL | LTDC_GCR_VSPOL | LTDC_GCR_DEPOL | LTDC_GCR_PCPOL);
hltdc->Instance->GCR |= (uint32_t)(hltdc->Init.HSPolarity | hltdc->Init.VSPolarity | \
hltdc->Init.DEPolarity | hltdc->Init.PCPolarity);
/* Sets Synchronization size */
hltdc->Instance->SSCR &= ~(LTDC_SSCR_VSH | LTDC_SSCR_HSW);
tmp = (hltdc->Init.HorizontalSync << 16);
hltdc->Instance->SSCR |= (tmp | hltdc->Init.VerticalSync);
/* Sets Accumulated Back porch */
hltdc->Instance->BPCR &= ~(LTDC_BPCR_AVBP | LTDC_BPCR_AHBP);
tmp = (hltdc->Init.AccumulatedHBP << 16);
hltdc->Instance->BPCR |= (tmp | hltdc->Init.AccumulatedVBP);
/* Sets Accumulated Active Width */
hltdc->Instance->AWCR &= ~(LTDC_AWCR_AAH | LTDC_AWCR_AAW);
tmp = (hltdc->Init.AccumulatedActiveW << 16);
hltdc->Instance->AWCR |= (tmp | hltdc->Init.AccumulatedActiveH);
/* Sets Total Width */
hltdc->Instance->TWCR &= ~(LTDC_TWCR_TOTALH | LTDC_TWCR_TOTALW);
tmp = (hltdc->Init.TotalWidth << 16);
hltdc->Instance->TWCR |= (tmp | hltdc->Init.TotalHeigh);
/* Sets the background color value */
tmp = ((uint32_t)(hltdc->Init.Backcolor.Green) << 8);
tmp1 = ((uint32_t)(hltdc->Init.Backcolor.Red) << 16);
hltdc->Instance->BCCR &= ~(LTDC_BCCR_BCBLUE | LTDC_BCCR_BCGREEN | LTDC_BCCR_BCRED);
hltdc->Instance->BCCR |= (tmp1 | tmp | hltdc->Init.Backcolor.Blue);
/* Enable the transfer Error interrupt */
__HAL_LTDC_ENABLE_IT(hltdc, LTDC_IT_TE);
/* Enable the FIFO underrun interrupt */
__HAL_LTDC_ENABLE_IT(hltdc, LTDC_IT_FU);
/* Enable LTDC by setting LTDCEN bit */
__HAL_LTDC_ENABLE(hltdc);
/* Initialise the error code */
hltdc->ErrorCode = HAL_LTDC_ERROR_NONE;
/* Initialize the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
return HAL_OK;
}
/**
* @brief Deinitializes the LTDC peripheral registers to their default reset
* values.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_DeInit(LTDC_HandleTypeDef *hltdc)
{
/* DeInit the low level hardware */
HAL_LTDC_MspDeInit(hltdc);
/* Initialise the error code */
hltdc->ErrorCode = HAL_LTDC_ERROR_NONE;
/* Initialize the LTDC state*/
hltdc->State = HAL_LTDC_STATE_RESET;
/* Release Lock */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Initializes the LTDC MSP.
* @param hltdc : pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @retval None
*/
__weak void HAL_LTDC_MspInit(LTDC_HandleTypeDef* hltdc)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_LTDC_MspInit could be implemented in the user file
*/
}
/**
* @brief DeInitializes the LTDC MSP.
* @param hltdc : pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @retval None
*/
__weak void HAL_LTDC_MspDeInit(LTDC_HandleTypeDef* hltdc)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_LTDC_MspDeInit could be implemented in the user file
*/
}
/**
* @}
*/
/** @defgroup LTDC_Group2 IO operation functions
* @brief IO operation functions
*
@verbatim
===============================================================================
##### IO operation functions #####
===============================================================================
[..] This section provides function allowing to:
(+) Handle LTDC interrupt request
@endverbatim
* @{
*/
/**
* @brief Handles LTDC interrupt request.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @retval HAL status
*/
void HAL_LTDC_IRQHandler(LTDC_HandleTypeDef *hltdc)
{
/* Transfer Error Interrupt management ***************************************/
if(__HAL_LTDC_GET_FLAG(hltdc, LTDC_FLAG_TE) != RESET)
{
if(__HAL_LTDC_GET_IT_SOURCE(hltdc, LTDC_IT_TE) != RESET)
{
/* Disable the transfer Error interrupt */
__HAL_LTDC_DISABLE_IT(hltdc, LTDC_IT_TE);
/* Clear the transfer error flag */
__HAL_LTDC_CLEAR_FLAG(hltdc, LTDC_FLAG_TE);
/* Update error code */
hltdc->ErrorCode |= HAL_LTDC_ERROR_TE;
/* Change LTDC state */
hltdc->State = HAL_LTDC_STATE_ERROR;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
/* Transfer error Callback */
HAL_LTDC_ErrorCallback(hltdc);
}
}
/* FIFO underrun Interrupt management ***************************************/
if(__HAL_LTDC_GET_FLAG(hltdc, LTDC_FLAG_FU) != RESET)
{
if(__HAL_LTDC_GET_IT_SOURCE(hltdc, LTDC_IT_FU) != RESET)
{
/* Disable the FIFO underrun interrupt */
__HAL_LTDC_DISABLE_IT(hltdc, LTDC_IT_FU);
/* Clear the FIFO underrun flag */
__HAL_LTDC_CLEAR_FLAG(hltdc, LTDC_FLAG_FU);
/* Update error code */
hltdc->ErrorCode |= HAL_LTDC_ERROR_FU;
/* Change LTDC state */
hltdc->State = HAL_LTDC_STATE_ERROR;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
/* Transfer error Callback */
HAL_LTDC_ErrorCallback(hltdc);
}
}
/* Line Interrupt management ************************************************/
if(__HAL_LTDC_GET_FLAG(hltdc, LTDC_FLAG_LI) != RESET)
{
if(__HAL_LTDC_GET_IT_SOURCE(hltdc, LTDC_IT_LI) != RESET)
{
/* Disable the Line interrupt */
__HAL_LTDC_DISABLE_IT(hltdc, LTDC_IT_LI);
/* Clear the Line interrupt flag */
__HAL_LTDC_CLEAR_FLAG(hltdc, LTDC_FLAG_LI);
/* Change LTDC state */
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
/* Line interrupt Callback */
HAL_LTDC_LineEvenCallback(hltdc);
}
}
}
/**
* @brief Error LTDC callback.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @retval None
*/
__weak void HAL_LTDC_ErrorCallback(LTDC_HandleTypeDef *hltdc)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_LTDC_ErrorCallback could be implemented in the user file
*/
}
/**
* @brief Line Event callback.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @retval None
*/
__weak void HAL_LTDC_LineEvenCallback(LTDC_HandleTypeDef *hltdc)
{
/* NOTE : This function Should not be modified, when the callback is needed,
the HAL_LTDC_LineEvenCallback could be implemented in the user file
*/
}
/**
* @}
*/
/** @defgroup LTDC_Group3 Peripheral Control functions
* @brief Peripheral Control functions
*
@verbatim
===============================================================================
##### Peripheral Control functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Configure the LTDC foreground or/and background parameters.
(+) Set the active layer.
(+) Configure the color keying.
(+) Configure the C-LUT.
(+) Enable / Disable the color keying.
(+) Enable / Disable the C-LUT.
(+) Update the layer position.
(+) Update the layer size.
(+) update pixel format on the fly the.
(+) update transparency on the fly the.
(+) update address on the fly.
@endverbatim
* @{
*/
/**
* @brief Configure the LTDC Layer according to the specified
* parameters in the LTDC_InitTypeDef and create the associated handle.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param pLayerCfg: pointer to a LTDC_LayerCfgTypeDef structure that contains
* the configuration information for the Layer.
* @param LayerIdx: LTDC Layer index
* This parameter can be one of the following values:
* 0 or 1
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LTDC_ConfigLayer(LTDC_HandleTypeDef *hltdc, LTDC_LayerCfgTypeDef *pLayerCfg, uint32_t LayerIdx)
{
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Check the parameters */
assert_param(IS_LTDC_LAYER(LayerIdx));
assert_param(IS_LTDC_PIXEL_FORMAT(pLayerCfg->PixelFormat));
assert_param(IS_LTDC_BLENDING_FACTOR1(pLayerCfg->BlendingFactor1));
assert_param(IS_LTDC_BLENDING_FACTOR2(pLayerCfg->BlendingFactor2));
assert_param(IS_LTDC_HCONFIGST(pLayerCfg->WindowX0));
assert_param(IS_LTDC_HCONFIGSP(pLayerCfg->WindowX1));
assert_param(IS_LTDC_VCONFIGST(pLayerCfg->WindowY0));
assert_param(IS_LTDC_VCONFIGSP(pLayerCfg->WindowY1));
assert_param(IS_LTDC_ALPHA(pLayerCfg->Alpha0));
assert_param(IS_LTDC_CFBLL(pLayerCfg->ImageWidth));
assert_param(IS_LTDC_CFBLNBR(pLayerCfg->ImageHeight));
/* Copy new layer configuration into handle structure */
hltdc->LayerCfg[LayerIdx] = *pLayerCfg;
/* Configure the LTDC Layer */
LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);
/* Sets the Reload type */
hltdc->Instance->SRCR = LTDC_SRCR_IMR;
/* Initialize the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Configure the color keying.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param RGBValue: the color key value
* @param LayerIdx: LTDC Layer index
* This parameter can be one of the following values:
* 0 or 1
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_ConfigColorKeying(LTDC_HandleTypeDef *hltdc, uint32_t RGBValue, uint32_t LayerIdx)
{
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Check the parameters */
assert_param(IS_LTDC_LAYER(LayerIdx));
/* Configures the default color values */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CKCR &= ~(LTDC_LxCKCR_CKBLUE | LTDC_LxCKCR_CKGREEN | LTDC_LxCKCR_CKRED);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CKCR = RGBValue;
/* Sets the Reload type */
hltdc->Instance->SRCR = LTDC_SRCR_IMR;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Load the color lookup table.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param pCLUT: pointer to the color lookup table address.
* @param CLUTSize: the color lookup table size.
* @param LayerIdx: LTDC Layer index
* This parameter can be one of the following values:
* 0 or 1
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_ConfigCLUT(LTDC_HandleTypeDef *hltdc, uint32_t *pCLUT, uint32_t CLUTSize, uint32_t LayerIdx)
{
uint32_t tmp = 0;
uint32_t counter = 0;
uint32_t pcounter = 0;
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Check the parameters */
assert_param(IS_LTDC_LAYER(LayerIdx));
for(counter = 0; (counter < CLUTSize); counter++)
{
tmp = ((counter << 24) | ((uint32_t)(*pCLUT) & 0xFF) | ((uint32_t)(*pCLUT) & 0xFF00) | ((uint32_t)(*pCLUT) & 0xFF0000));
pcounter = (uint32_t)pCLUT + sizeof(*pCLUT);
pCLUT = (uint32_t *)pcounter;
/* Specifies the C-LUT address and RGB value */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CLUTWR = tmp;
}
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Enable the color keying.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param LayerIdx: LTDC Layer index
* This parameter can be one of the following values:
* 0 or 1
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_EnableColorKeying(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Check the parameters */
assert_param(IS_LTDC_LAYER(LayerIdx));
/* Enable LTDC color keying by setting COLKEN bit */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CR |= (uint32_t)LTDC_LxCR_COLKEN;
/* Sets the Reload type */
hltdc->Instance->SRCR = LTDC_SRCR_IMR;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Disable the color keying.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param LayerIdx: LTDC Layer index
* This parameter can be one of the following values:
* 0 or 1
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_DisableColorKeying(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Check the parameters */
assert_param(IS_LTDC_LAYER(LayerIdx));
/* Disable LTDC color keying by setting COLKEN bit */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CR &= ~(uint32_t)LTDC_LxCR_COLKEN;
/* Sets the Reload type */
hltdc->Instance->SRCR = LTDC_SRCR_IMR;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Enable the color lookup table.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param LayerIdx: LTDC Layer index
* This parameter can be one of the following values:
* 0 or 1
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_EnableCLUT(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Check the parameters */
assert_param(IS_LTDC_LAYER(LayerIdx));
/* Disable LTDC color lookup table by setting CLUTEN bit */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CR |= (uint32_t)LTDC_LxCR_CLUTEN;
/* Sets the Reload type */
hltdc->Instance->SRCR = LTDC_SRCR_IMR;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Disable the color lookup table.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param LayerIdx: LTDC Layer index
* This parameter can be one of the following values:
* 0 or 1
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_DisableCLUT(LTDC_HandleTypeDef *hltdc, uint32_t LayerIdx)
{
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Check the parameters */
assert_param(IS_LTDC_LAYER(LayerIdx));
/* Disable LTDC color lookup table by setting CLUTEN bit */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CR &= ~(uint32_t)LTDC_LxCR_CLUTEN;
/* Sets the Reload type */
hltdc->Instance->SRCR = LTDC_SRCR_IMR;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Enables Dither.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_EnableDither(LTDC_HandleTypeDef *hltdc)
{
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Enable Dither by setting DTEN bit */
LTDC->GCR |= (uint32_t)LTDC_GCR_DTEN;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Disables Dither.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_DisableDither(LTDC_HandleTypeDef *hltdc)
{
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Disable Dither by setting DTEN bit */
LTDC->GCR &= ~(uint32_t)LTDC_GCR_DTEN;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Set the LTDC window size.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param XSize: LTDC Pixel per line
* @param YSize: LTDC Line number
* @param LayerIdx: LTDC Layer index
* This parameter can be one of the following values:
* 0 or 1
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_SetWindowSize(LTDC_HandleTypeDef *hltdc, uint32_t XSize, uint32_t YSize, uint32_t LayerIdx)
{
LTDC_LayerCfgTypeDef *pLayerCfg;
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Get layer configuration from handle structure */
pLayerCfg = &hltdc->LayerCfg[LayerIdx];
/* Check the parameters (Layers parameters)*/
assert_param(IS_LTDC_LAYER(LayerIdx));
assert_param(IS_LTDC_HCONFIGST(pLayerCfg->WindowX0));
assert_param(IS_LTDC_HCONFIGSP(pLayerCfg->WindowX1));
assert_param(IS_LTDC_VCONFIGST(pLayerCfg->WindowY0));
assert_param(IS_LTDC_VCONFIGSP(pLayerCfg->WindowY1));
assert_param(IS_LTDC_CFBLL(XSize));
assert_param(IS_LTDC_CFBLNBR(YSize));
/* update horizontal start/stop */
pLayerCfg->WindowX0 = 0;
pLayerCfg->WindowX1 = XSize + pLayerCfg->WindowX0;
/* update vertical start/stop */
pLayerCfg->WindowY0 = 0;
pLayerCfg->WindowY1 = YSize + pLayerCfg->WindowY0;
/* Reconfigures the color frame buffer pitch in byte */
pLayerCfg->ImageWidth = XSize;
/* Reconfigures the frame buffer line number */
pLayerCfg->ImageHeight = YSize;
/* Set LTDC parameters */
LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);
/* Sets the Reload type */
hltdc->Instance->SRCR = LTDC_SRCR_IMR;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Set the LTDC window position.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param X0: LTDC window X offset
* @param Y0: LTDC window Y offset
* @param LayerIdx: LTDC Layer index
* This parameter can be one of the following values:
* 0 or 1
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_SetWindowPosition(LTDC_HandleTypeDef *hltdc, uint32_t X0, uint32_t Y0, uint32_t LayerIdx)
{
LTDC_LayerCfgTypeDef *pLayerCfg;
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Get layer configuration from handle structure */
pLayerCfg = &hltdc->LayerCfg[LayerIdx];
/* Check the parameters */
assert_param(IS_LTDC_LAYER(LayerIdx));
assert_param(IS_LTDC_HCONFIGST(pLayerCfg->WindowX0));
assert_param(IS_LTDC_HCONFIGSP(pLayerCfg->WindowX1));
assert_param(IS_LTDC_VCONFIGST(pLayerCfg->WindowY0));
assert_param(IS_LTDC_VCONFIGSP(pLayerCfg->WindowY1));
/* update horizontal start/stop */
pLayerCfg->WindowX0 = X0;
pLayerCfg->WindowX1 = X0 + pLayerCfg->ImageWidth;
/* update vertical start/stop */
pLayerCfg->WindowY0 = Y0;
pLayerCfg->WindowY1 = Y0 + pLayerCfg->ImageHeight;
/* Set LTDC parameters */
LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);
/* Sets the Reload type */
hltdc->Instance->SRCR = LTDC_SRCR_IMR;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Reconfigure the pixel format.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param Pixelformat: new pixel format value.
* @param LayerIdx: LTDC Layer index.
* This parameter can be one of the following values:
* 0 or 1.
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_SetPixelFormat(LTDC_HandleTypeDef *hltdc, uint32_t Pixelformat, uint32_t LayerIdx)
{
LTDC_LayerCfgTypeDef *pLayerCfg;
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Check the parameters */
assert_param(IS_LTDC_LAYER(LayerIdx));
assert_param(IS_LTDC_PIXEL_FORMAT(Pixelformat));
/* Get layer configuration from handle structure */
pLayerCfg = &hltdc->LayerCfg[LayerIdx];
/* Reconfigure the pixel format */
pLayerCfg->PixelFormat = Pixelformat;
/* Set LTDC parameters */
LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);
/* Sets the Reload type */
hltdc->Instance->SRCR = LTDC_SRCR_IMR;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Reconfigure the layer alpha value.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param Alpha: new alpha value.
* @param LayerIdx: LTDC Layer index
* This parameter can be one of the following values:
* 0 or 1
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_SetAlpha(LTDC_HandleTypeDef *hltdc, uint32_t Alpha, uint32_t LayerIdx)
{
LTDC_LayerCfgTypeDef *pLayerCfg;
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Check the parameters */
assert_param(IS_LTDC_ALPHA(Alpha));
assert_param(IS_LTDC_LAYER(LayerIdx));
/* Get layer configuration from handle structure */
pLayerCfg = &hltdc->LayerCfg[LayerIdx];
/* Reconfigure the Alpha value */
pLayerCfg->Alpha = Alpha;
/* Set LTDC parameters */
LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);
/* Sets the Reload type */
hltdc->Instance->SRCR = LTDC_SRCR_IMR;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Reconfigure the frame buffer Address.
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param Address: new address value.
* @param LayerIdx: LTDC Layer index.
* This parameter can be one of the following values:
* 0 or 1.
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_SetAddress(LTDC_HandleTypeDef *hltdc, uint32_t Address, uint32_t LayerIdx)
{
LTDC_LayerCfgTypeDef *pLayerCfg;
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Check the parameters */
assert_param(IS_LTDC_LAYER(LayerIdx));
/* Get layer configuration from handle structure */
pLayerCfg = &hltdc->LayerCfg[LayerIdx];
/* Reconfigure the Address */
pLayerCfg->FBStartAdress = Address;
/* Set LTDC parameters */
LTDC_SetConfig(hltdc, pLayerCfg, LayerIdx);
/* Sets the Reload type */
hltdc->Instance->SRCR = LTDC_SRCR_IMR;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @brief Define the position of the line interrupt .
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param Line: Line Interrupt Position.
* @retval None
*/
HAL_StatusTypeDef HAL_LTDC_ProgramLineEvent(LTDC_HandleTypeDef *hltdc, uint32_t Line)
{
/* Process locked */
__HAL_LOCK(hltdc);
/* Change LTDC peripheral state */
hltdc->State = HAL_LTDC_STATE_BUSY;
/* Check the parameters */
assert_param(IS_LTDC_LIPOS(Line));
/* Enable the Line interrupt */
__HAL_LTDC_ENABLE_IT(hltdc, LTDC_IT_LI);
/* Sets the Line Interrupt position */
LTDC->LIPCR = (uint32_t)Line;
/* Change the LTDC state*/
hltdc->State = HAL_LTDC_STATE_READY;
/* Process unlocked */
__HAL_UNLOCK(hltdc);
return HAL_OK;
}
/**
* @}
*/
/** @defgroup LTDC_Group4 Peripheral State and Errors functions
* @brief Peripheral State and Errors functions
*
@verbatim
===============================================================================
##### Peripheral State and Errors functions #####
===============================================================================
[..]
This subsection provides functions allowing to
(+) Check the LTDC state.
(+) Get error code.
@endverbatim
* @{
*/
/**
* @brief Return the LTDC state
* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @retval HAL state
*/
HAL_LTDC_StateTypeDef HAL_LTDC_GetState(LTDC_HandleTypeDef *hltdc)
{
return hltdc->State;
}
/**
* @brief Return the LTDC error code
* @param hltdc : pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @retval LTDC Error Code
*/
uint32_t HAL_LTDC_GetError(LTDC_HandleTypeDef *hltdc)
{
return hltdc->ErrorCode;
}
/**
* @}
*/
/**
* @brief Configures the LTDC peripheral
* @param hltdc : Pointer to a LTDC_HandleTypeDef structure that contains
* the configuration information for the LTDC.
* @param pLayerCfg: Pointer LTDC Layer Configuration strusture
* @param LayerIdx: LTDC Layer index
* This parameter can be one of the following values: 0 or 1
* @retval None
*/
static void LTDC_SetConfig(LTDC_HandleTypeDef *hltdc, LTDC_LayerCfgTypeDef *pLayerCfg, uint32_t LayerIdx)
{
uint32_t tmp = 0;
uint32_t tmp1 = 0;
uint32_t tmp2 = 0;
/* Configures the horizontal start and stop position */
tmp = ((pLayerCfg->WindowX1 + ((hltdc->Instance->BPCR & LTDC_BPCR_AHBP) >> 16)) << 16);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->WHPCR &= ~(LTDC_LxWHPCR_WHSTPOS | LTDC_LxWHPCR_WHSPPOS);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->WHPCR = ((pLayerCfg->WindowX0 + ((hltdc->Instance->BPCR & LTDC_BPCR_AHBP) >> 16) + 1) | tmp);
/* Configures the vertical start and stop position */
tmp = ((pLayerCfg->WindowY1 + (hltdc->Instance->BPCR & LTDC_BPCR_AVBP)) << 16);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->WVPCR &= ~(LTDC_LxWVPCR_WVSTPOS | LTDC_LxWVPCR_WVSPPOS);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->WVPCR = ((pLayerCfg->WindowY0 + (hltdc->Instance->BPCR & LTDC_BPCR_AVBP) + 1) | tmp);
/* Specifies the pixel format */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->PFCR &= ~(LTDC_LxPFCR_PF);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->PFCR = (pLayerCfg->PixelFormat);
/* Configures the default color values */
tmp = ((uint32_t)(pLayerCfg->Backcolor.Green) << 8);
tmp1 = ((uint32_t)(pLayerCfg->Backcolor.Red) << 16);
tmp2 = (pLayerCfg->Alpha0 << 24);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->DCCR &= ~(LTDC_LxDCCR_DCBLUE | LTDC_LxDCCR_DCGREEN | LTDC_LxDCCR_DCRED | LTDC_LxDCCR_DCALPHA);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->DCCR = (pLayerCfg->Backcolor.Blue | tmp | tmp1 | tmp2);
/* Specifies the constant alpha value */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CACR &= ~(LTDC_LxCACR_CONSTA);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CACR = (pLayerCfg->Alpha);
/* Specifies the blending factors */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->BFCR &= ~(LTDC_LxBFCR_BF2 | LTDC_LxBFCR_BF1);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->BFCR = (pLayerCfg->BlendingFactor1 | pLayerCfg->BlendingFactor2);
/* Configures the color frame buffer start address */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CFBAR &= ~(LTDC_LxCFBAR_CFBADD);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CFBAR = (pLayerCfg->FBStartAdress);
if(pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_ARGB8888)
{
tmp = 4;
}
else if (pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_RGB888)
{
tmp = 3;
}
else if((pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_ARGB4444) || \
(pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_RGB565) || \
(pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_ARGB1555) || \
(pLayerCfg->PixelFormat == LTDC_PIXEL_FORMAT_AL88))
{
tmp = 2;
}
else
{
tmp = 1;
}
/* Configures the color frame buffer pitch in byte */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CFBLR &= ~(LTDC_LxCFBLR_CFBLL | LTDC_LxCFBLR_CFBP);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CFBLR = (((pLayerCfg->ImageWidth * tmp) << 16) | ((pLayerCfg->ImageWidth * tmp) + 3));
/* Configures the frame buffer line number */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CFBLNR &= ~(LTDC_LxCFBLNR_CFBLNBR);
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CFBLNR = (pLayerCfg->ImageHeight);
/* Enable LTDC_Layer by setting LEN bit */
__HAL_LTDC_LAYER(hltdc, LayerIdx)->CR |= (uint32_t)LTDC_LxCR_LEN;
}
/**
* @}
*/
#endif /* STM32F429xx || STM32F439xx */
#endif /* HAL_LTDC_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/