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shields: st_stm32f4dis_cam: ov9655 sensor based shield

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Introduction of the STM32F4DIS-CAM shield for STM32 boards
embedding a DVP based OV9655 sensor.

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
This commit is contained in:
Alain Volmat 2024-10-22 21:27:59 +02:00 • committed by Anas Nashif
commit c304da7c67
5 changed files with 107 additions and 0 deletions
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boards/shields/st_stm32f4dis_cam/Kconfig.shield Normal file
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# Copyright (c) 2025 STMicroelectronics
# SPDX-License-Identifier: Apache-2.0
config SHIELD_ST_STM32F4DIS_CAM
def_bool $(shields_list_contains,st_stm32f4dis_cam)

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boards/shields/st_stm32f4dis_cam/boards/stm32l4r9i_disco.conf Normal file
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CONFIG_VIDEO_INIT_PRIORITY=72

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boards/shields/st_stm32f4dis_cam/doc/index.rst Normal file
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.. _st_stm32f4dis_cam:
ST STM32F4DIS-CAM
#################
Overview
********
The STM32F4DIS-CAM camera board embeds a 1.3MPix OV9655 sensor and a
30 pins FFC connector in order to be used for some of the STM32 Discovery
kits such as STM32L4R9I-disco board offering a DVP camera interface.
Requirements
************
The camera module bundle is compatible with STM32 Discovery kits and
Evaluation boards featuring a 30 pins FFC connector, such as the STM32F4
Discovery kit or STM32L4R9I Discovery kit.
Usage
*****
The shield can be used in any application by setting ``SHIELD`` to
``st_stm32f4dis_cam`` for boards with the necessary device tree node labels.
Set ``--shield "st_stm32f4dis_cam"`` when you invoke ``west build``. For example:
.. zephyr-app-commands::
:zephyr-app: samples/drivers/video/capture
:board: stm32l4r9i_disco
:shield: st_stm32f4dis_cam
:goals: build

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boards/shields/st_stm32f4dis_cam/shield.yml Normal file
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shield:
name: st_stm32f4dis_cam
full_name: ST STM32F4DIS-CAM
vendor: st
supported_features:
- video

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boards/shields/st_stm32f4dis_cam/st_stm32f4dis_cam.overlay Normal file
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/*
* Copyright (c) 2025 STMicroelectronics
*
* SPDX-License-Identifier: Apache-2.0
*/
/ {
chosen {
zephyr,camera = &st_cam_dvp;
};
};
&dma2 {
status = "okay";
};
&dmamux1 {
status = "okay";
};
&st_cam_i2c {
ov9655: camera@30 {
compatible = "ovti,ov9655";
reg = <0x30>;
pwdn-gpios = <&dcmi_camera_connector 6 GPIO_ACTIVE_HIGH>;
port {
ov9655_ep_out: endpoint {
remote-endpoint-label = "dcmi_ep_in";
};
};
};
};
#define MCO1_SEL_SYSCLK 1
#define MCO1_PRE_DIV_4 2
&mco1 {
status = "okay";
clocks = <&rcc STM32_SRC_SYSCLK MCO1_SEL(MCO1_SEL_SYSCLK)>;
prescaler = <MCO1_PRE(MCO1_PRE_DIV_4)>;
pinctrl-0 = <&rcc_mco_pa8>;
pinctrl-names = "default";
};
&st_cam_dvp {
status = "okay";
/* DMA config is already hardcoded within the DCMI driver */
dmas = <&dma2 5 0 0>;
port {
dcmi_ep_in: endpoint {
remote-endpoint-label = "ov9655_ep_out";
bus-width = <8>;
hsync-active = <1>;
vsync-active = <1>;
pclk-sample = <1>;
};
};
};