HarmonyOS鸿蒙Next rk3568 OpenharmonyV3.1.1源码版本串口调试，Failed to create previewOutput
HarmonyOS鸿蒙Next rk3568 OpenharmonyV3.1.1源码版本串口调试，Failed to create previewOutput 新建子系统并仿照foundation/multimedia/camera_standard/interfaces/inner_api/native/test/camera_capture.cpp文件编写拍照测试样例，成功烧录至开发板后，连接串口，在串口命令行中输入camera_capture命令，不能成功运行，Failed to create previewOutput。
目录结构：
├── helloworld
│ ├── bundle.json
│ ├── include
│ ├── ohos.build
│ └── src
│ ├── BUILD.gn
│ ├── camera_capture.cpp
│ ├── camera_capture_video.cpp
│ ├── camera_capture_video.h
│ ├── camera_video.cpp
│ ├── test_common.cpp
│ └── test_common.h
BUILD.gn文件
import("//build/ohos.gni")
config("camera_config") {
include_dirs = [
"//foundation/multimedia/camera_standard/interfaces/inner_api/native/camera/include",
"//foundation/multimedia/camera_standard/interfaces/inner_api/native/test",
"//foundation/multimedia/camera_standard/services/camera_service/include",
"//foundation/multimedia/camera_standard/services/camera_service/binder/base/include",
"//foundation/multimedia/camera_standard/services/camera_service/binder/client/include",
"//foundation/multimedia/camera_standard/services/camera_service/binder/server/include",
"//foundation/graphic/standard/frameworks/surface/include",
"//drivers/peripheral/camera/interfaces/metadata/include",
"//utils/system/safwk/native/include",
"//drivers/framework/include/utils",
"//drivers/adapter/uhdf2/osal/include",
"//drivers/adapter/uhdf2/include/hdi",
"//drivers/peripheral/display/interfaces/include",
"//base/security/access_token/interfaces/innerkits/accesstoken/include",
"//base/security/access_token/interfaces/innerkits/token_setproc/include",
]
if (device_name == "baltimore") {
include_dirs += [
"//drivers/peripheral/adapter/camera/interfaces/include",
"//drivers/peripheral/adapter/camera/interfaces/include/server",
"//drivers/peripheral/adapter/camera/interfaces/include/callback/device",
"//drivers/peripheral/adapter/camera/interfaces/include/callback/operator",
"//drivers/peripheral/adapter/camera/interfaces/include/callback/host",
]
} else {
include_dirs += [
"//drivers/peripheral/camera/interfaces/include",
"//drivers/peripheral/camera/interfaces/hdi_ipc",
"//drivers/peripheral/camera/interfaces/hdi_ipc/server",
"//drivers/peripheral/camera/interfaces/hdi_ipc/callback/device",
"//drivers/peripheral/camera/interfaces/hdi_ipc/callback/operator",
"//drivers/peripheral/camera/interfaces/hdi_ipc/callback/host",
]
}
}
ohos_executable("camera_video") {
install_enable = true
sources = [
"camera_video.cpp",
"test_common.cpp",
]
cflags = ["-fPIC"]
cflags += ["-Wall"]
cflags_cc = cflags
configs = [":camera_config"]
deps = [
"//drivers/peripheral/camera/interfaces/metadata:metadata",
"//foundation/graphic/standard:libsurface",
"//foundation/multimedia/camera_standard/frameworks/native/camera:camera_framework",
"//utils/native/base:utils",
]
external_deps = [
"access_token:libaccesstoken_sdk",
"access_token:libtoken_setproc",
"hiviewdfx_hilog_native:libhilog",
"ipc:ipc_core",
"ipc:ipc_single",
"multimedia_media_standard:media_client",
]
part_name = "helloworld_camera"
subsystem_name = "helloworld"
}
ohos_executable("camera_capture") {
install_enable = true
sources = [
"camera_capture.cpp",
"test_common.cpp",
]
cflags = ["-fPIC"]
cflags += ["-Wall"]
cflags_cc = cflags
configs = [":camera_config"]
deps = [
"//drivers/peripheral/camera/interfaces/metadata:metadata",
"//foundation/graphic/standard:libsurface",
"//foundation/multimedia/camera_standard/frameworks/native/camera:camera_framework",
"//utils/native/base:utils",
]
external_deps = [
"access_token:libaccesstoken_sdk",
"access_token:libtoken_setproc",
"hiviewdfx_hilog_native:libhilog",
"ipc:ipc_core",
]
part_name = "helloworld_camera"
subsystem_name = "helloworld"
}
ohos_executable("camera_capture_video") {
install_enable = true
sources = [
"camera_capture_video.cpp",
"test_common.cpp",
]
cflags = ["-fPIC"]
cflags += ["-Wall"]
cflags_cc = cflags
configs = [":camera_config"]
deps = [
"//drivers/peripheral/camera/interfaces/metadata:metadata",
"//foundation/graphic/standard:libsurface",
"//foundation/multimedia/camera_standard/frameworks/native/camera:camera_framework",
"//utils/native/base:utils",
]
external_deps = [
"access_token:libaccesstoken_sdk",
"access_token:libtoken_setproc",
"hiviewdfx_hilog_native:libhilog",
"ipc:ipc_core",
]
part_name = "helloworld_camera"
subsystem_name = "helloworld"
}
bundle.json文件
{
"name": "@ohos/helloworld_camera",
"description": "Hello world helloworld_camera.",
"version": "3.1",
"license": "Apache License 2.0",
"publishAs": "code-segment",
"segment": {
"destPath": "helloworld/src"
},
"dirs": {},
"scripts": {},
"component": {
"name": "helloworld_camera",
"subsystem": "helloworld",
"syscap": [],
"features": [],
"adapted_system_type": [ "mini", "small", "standard" ],
"rom": "",
"ram": "",
"deps": {
"components": [
"libhilog",
"ipc_core",
"media_client",
"system_ability_fwk",
"samgr_proxy",
"libaccesstoken_sdk",
"ipc_single"
],
"third_party": [
]
},
"build": {
"sub_component": [
"//helloworld/src:camera_video",
"//helloworld/src:camera_capture",
"//helloworld/src:camera_capture_video"
],
"inner_kits": [],
"test": []
}
}
}
ohos.build文件
{
"subsystem": "helloworld",
"parts": {
"helloworld_camera": {
"variants": [
"phone"
],
"module_list": [
"//drivers/peripheral/camera/interfaces/metadata/test:camerametadatatest",
"//foundation/multimedia/camera_standard/frameworks/native/camera/test:cameraframeworktest",
"//helloworld/src:camera_video",
"//helloworld/src:camera_capture",
"//helloworld/src:camera_capture_video"
],
"inner_kits": [
],
"test_list": [
]
}
}
}
报错日志：
08-05 09:02:44.147 1707-1707/? D 02b00/CAMERA: 0xE2DE6C Instances create
08-05 09:02:44.147 1707-1707/? D 01800/SAFWK: SystemAbility::MakeAndRegisterAbility registering system ability...
...
08-05 09:02:44.169 1707-1707/? D 02b00/CAMERA: Failed to create previewOutput
更多关于HarmonyOS鸿蒙Next rk3568 OpenharmonyV3.1.1源码版本串口调试，Failed to create previewOutput的实战教程也可以访问 https://www.itying.com/category-93-b0.html
4 回复
怎么解决的呀
更多关于HarmonyOS鸿蒙Next rk3568 OpenharmonyV3.1.1源码版本串口调试，Failed to create previewOutput的实战系列教程也可以访问 https://www.itying.com/category-93-b0.html
在HarmonyOS鸿蒙Next rk3568 OpenharmonyV3.1.1源码版本中，串口调试时出现“Failed to create previewOutput”错误，通常与串口设备初始化或配置问题有关。可能的原因包括：
- 串口设备未正确初始化：确保串口设备在系统中已正确注册并初始化，检查设备树配置或相关驱动代码。
- 权限问题：串口设备可能需要特定的权限才能访问，检查应用程序或服务的权限设置。
- 硬件连接问题：确认串口硬件连接正常，包括线缆、接口等。
- 驱动兼容性：确保使用的串口驱动与OpenharmonyV3.1.1版本兼容，必要时更新或替换驱动。
- 配置错误：检查串口配置参数，如波特率、数据位、停止位等是否与设备要求一致。
解决方法包括检查设备树配置、验证权限设置、确认硬件连接、更新驱动以及核对串口配置参数。
