Dcmi Hal Driver Macros List; Initialization And Configuration Functions; Io Operation Functions - ST STM32F2 User Manual

UM1940
1. Program the required configuration through following parameters: horizontal and
vertical polarity, pixel clock polarity, Capture Rate, Synchronization Mode, code of the
frame delimiter and data width using HAL_DCMI_Init() function.
2. Configure the DMA2_Stream1 channel1 to transfer Data from DCMI DR register to the
destination memory buffer.
3. Program the required configuration through following parameters: DCMI mode,
destination memory Buffer address and the data length and enable capture using
HAL_DCMI_Start_DMA() function.
4. Optionally, configure and Enable the CROP feature to select a rectangular window
from the received image using HAL_DCMI_ConfigCrop() and
HAL_DCMI_EnableCROP() functions
5. The capture can be stopped using HAL_DCMI_Stop() function.
6. To control DCMI state you can use the function HAL_DCMI_GetState().

DCMI HAL driver macros list

Below the list of most used macros in DCMI HAL driver.
__HAL_DCMI_ENABLE: Enable the DCMI peripheral.
__HAL_DCMI_DISABLE: Disable the DCMI peripheral.
__HAL_DCMI_GET_FLAG: Get the DCMI pending flags.
__HAL_DCMI_CLEAR_FLAG: Clear the DCMI pending flags.
__HAL_DCMI_ENABLE_IT: Enable the specified DCMI interrupts.
__HAL_DCMI_DISABLE_IT: Disable the specified DCMI interrupts.
__HAL_DCMI_GET_IT_SOURCE: Check whether the specified DCMI interrupt has
occurred or not.
14.2.2

Initialization and Configuration functions

This section provides functions allowing to:
Initialize and configure the DCMI
De-initialize the DCMI
This section contains the following APIs:
HAL_DCMI_Init()
HAL_DCMI_DeInit()
HAL_DCMI_MspInit()
HAL_DCMI_MspDeInit()
14.2.3

IO operation functions

This section provides functions allowing to:
Configure destination address and data length and Enables DCMI DMA request and
enables DCMI capture
Stop the DCMI capture.
Handles DCMI interrupt request.
This section contains the following APIs:
HAL_DCMI_Start_DMA()
You can refer to the DCMI HAL driver header file for more useful macros
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HAL DCMI Generic Driver
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