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z2y=)_^)rb9b#)bO$RPR6D?<@#p<0aCxhs@xkslXJHSIdX%M4_2S0AhFgV@f7N-+aR z+x)K}u#1ORm}tLyE`7jYy$S>E*L-L%kSF!?PU9SRn=c4H^fY|<#Zd?=cGx0jTRz=g zRI+9tM3u0=#g_8d2gE|@?PQykPwTmH<>hfOo%tH*K1fmjjf-&XBggPB87^0}79UsM z4d@|9%TvV1G`)rYrn*nK2w{;^(DJ`pFA3#|*}zq2s=;feauktCK3un>St(q$O!^#8 zv-B4US!AF-=!m_nNf%^BnKuod5TIQ!+s{$?hp^-VUfSNU55fw@Wo2bIr)gzqjTY0) z#bcn;7jw0_@A)0>;A36q=H9=5+~{U2Wv52YUO-1>xEb4&Ek8M*1;Ux%2`hmc6JhiDp;BuA2u}N-*XsPA8TA|??C!#jiZ2BvtFGF{2ac@+f7sYtmswrA|Gxl~ CJPK3* literal 0 HcmV?d00001 diff --git a/zh-cn/device-dev/porting/porting-bes2600w-on-minisystem-display-demo.md b/zh-cn/device-dev/porting/porting-bes2600w-on-minisystem-display-demo.md new file mode 100644 index 0000000000..0ccb117fcc --- /dev/null +++ b/zh-cn/device-dev/porting/porting-bes2600w-on-minisystem-display-demo.md @@ -0,0 +1,1304 @@ + + +# 轻量带屏解决方案之恒玄芯片移植案例 + +本文章基于恒玄科技`BES2600W`芯片的欧智通[Multi-modal V200Z-R开发板](https://gitee.com/openharmony/device_board_fnlink)，进行轻量带屏开发板的标准移植，开发了智能开关面板样例，同时实现了`ace_engine_lite`、`graphic_ui`、`aafwk_lite`、`appexecfwk_lite`、`HDF`等部件基于`OpenHarmony LiteOS-M`内核的适配。移植架构上采用`Board`与`SoC`分离的方案，工具链`Newlib C`库与`Musl C`库可选，`LiteOS-M`内核编译采用`gn`结合`Kconfig`图形化配置等需求。 + +## 编译构建 + +### 目录规划 + +本案例在芯片移植架构方面进行了一些改进，以前的芯片适配目录规划为： + +``` +device +└── +    └── +``` + +这样会导致，小熊派`BearPi-HM Nano`开发板与润和的`HiSpark Pegasus`开发板使用小海思的`hi3861`的`SoC`时，需要在这两款开发板里面都放置一份重复的代码。为了解决该问题，本案例将单板厂商与`SoC`厂商进行分离，可以参考[Board和SoC解耦的设计思路](https://gitee.com/openharmony-sig/sig-content/blob/master/devboard/docs/board-soc-arch-design.md)，并把芯片适配目录规划为： + +``` +device +├── board --- 单板厂商目录 +│   └── fnlink --- 单板厂商名字：欧智通 +│   └── v200zr --- 单板名：v200zr +└── soc --- SoC厂商目录 + └── bestechnic --- SoC厂商名字：恒玄 + └── bes2600 --- SoC Series名：bes2600是一个系列，里面包含bes2600w等SoC名 +``` + +产品样例目录规划为： + +``` +vendor +└── bestechnic --- 开发产品样例厂商目录，恒玄开发的带屏样例，因此以bestechnic命名 + └── display_demo --- 产品名字：以智能开关面板的带屏显示样例 +``` + +### 预编译适配 + +在进行移植之前，需要进行预编译适配。 + +预编译适配主要使用`hb set`命令，设置整个项目的根目录、单板目录、产品目录、单板公司名等环境变量，为编译做准备。 + +具体的预编译适配步骤如下： + +1. 在`vendor/bestechnic/display_demo`目录下新增`config.json`文件，用于描述这个产品样例所使用的单板、内核等信息，描述信息可参考如下内容： + +``` +{ + "product_name": "display_demo", --- 用于hb set进行选择时，显示的产品名称 + "type": "mini", --- 构建系统的类型，mini/small/standard + "version": "3.0", --- 构建系统的版本，1.0/2.0/3.0 + "device_company": "fnlink", --- 单板厂商名，用于编译时找到/device/board/fnlink目录 + "board": "v200zr", --- 单板名，用于编译时找到/device/board/fnlink/v200zr目录 + "kernel_type": "liteos_m", --- 内核类型，因为OpenHarmony支持多内核，一块单板可能适配了多个内核，所以需要指定某个内核进行编译 + "kernel_version": "3.0.0", --- 内核版本，一块单板可能适配了多个linux内核版本，所以需要指定某个具体的内核版本进行编译 + "subsystems": [ ] --- 选择所需要编译构建的子系统 +} +``` + +2. 在`vendor/bestechnic/display_demo`目录下新增`config.json`文件，用于描述这个产品样例所使用的单板、内核等信息，描述信息可参考如下内容： + +``` +# Kernel type, e.g. "linux", "liteos_a", "liteos_m". +kernel_type = "liteos_m" --- 内核类型，跟config.json中kernel_type对应 + +# Kernel version. +kernel_version = "3.0.0" --- 内核版本，跟config.json中kernel_version对应 +``` + +3. 验证`hb set`配置是否正确，输入`hb set`能够显示如下图片表示配置正确。 + + 详细地，执行`hb set`输入项目根目录，并且回车，遍历所有`//vendor//`目录下的`config.json`，给出可选产品编译选项，`config.json`的`product_name`用于显示产品名，`device_company`和`board`用于关联出`//device/board//`目录，并且匹配`/config.gni`文件，如果能够匹配多个文件，表示该单板适配了多个内核，那么可以根据`config.json`的`kernel_type`和`kernel_version`来唯一匹配`config.gni`的`kernel_type`和`kernel_version`，这样就可以确定了需要编译适配了哪个内核的单板。 + +![hb set](figure/bes2600_hb_set.png) + +​ 通过`hb env`可以查看选择出来的预编译环境变量。 + +![hb env](figure/bes2600_hb_env.png) + +在执行`hb build`之前，需要准备好`LiteOS-M`内核适配，具体适配步骤请参考[内核移植](内核移植)。 + +## 内核移植 + +内核移植需要完成`LiteOS-M Kconfig`适配、`gn`的编译构建和内核启动最小适配。 + +### LiteOS-M Kconfig适配 + +在`//kernel/liteos_m`目录下执行`make menuconfig`命令，完成编译配置选项的选择。在`Makefile`文件中，会将`hb env`的结果转换成环境变量，即`PRODUCT_PATH`、`DEVICE_PATH`和`BOARD_COMPANY`。如下代码块所示： + +``` +$(foreach line,$(shell hb env | sed 's/\[OHOS INFO\]/ohos/g;s/ /_/g;s/:_/=/g' || true),$(eval $(line))) +ifneq ($(ohos_kernel),liteos_m) +$(error The selected product ($(ohos_product)) is not a liteos_m kernel type product) +endif +--- 将hb env的每一行输出转化为变量形式，例如将[OHOS INFO] device company: fnlink转换为ohos_device_company=fnlink + +…… + +ifeq ($(BOARD_COMPANY),) +BOARD_COMPANY:=$(ohos_device_company) +endif +…… +export BOARD_COMPANY +--- 将ohos_device_company转化为BOARD_COMPANY环境变量 +``` + +在`//kernel/liteos_m/Kconfig`文件中使用这些导出的环境变量，`Kconfiglib`采用`ulfalizer`开发基于`python`的版本，[源码地址](https://github.com/ulfalizer/Kconfiglib)，[功能介绍连接参考](https://github.com/zephyrproject-rtos/zephyr/blob/main/scripts/kconfig/kconfiglib.py)，里面用到了`orsource`关键字，其中`o`表示`optional`，表示这个文件是否存在可选，`r`表示`relative`，表示这个文件相对当前文件的相对路径。 + +``` +config SOC_COMPANY + string "SoC company name to locate soc build path" + help + This option specifies the SoC company name, used to locate the build path for soc. This option is set by the + SoC's Kconfig file, and should be exactly the same with SoC company path, and the user should generally avoid + modifying it via the menu configuration. + +orsource "../../device/board/*/Kconfig.liteos_m.shields" --- 将所有扩展板配置信息加载进来，因为单板厂商A提供扩展板可以给单板厂商B使用，所以这里使用*匹配所有的扩展板，而非BOARD_COMPANY。另外由于OpenHarmony支持多内核设计，Kconfig文件采用liteos_m作为后缀，在进行单板适配过程中，其他内核在适配过程中，可以使用对应的内核名作为后缀名进行扩展。 + +orsource "../../device/board/$(BOARD_COMPANY)/Kconfig.liteos_m.defconfig.boards" --- 加载BOARD_COMPANY的所有单板预定义配置 + +choice + prompt "Board Selection" + +orsource "../../device/board/$(BOARD_COMPANY)/Kconfig.liteos_m.boards" --- 提供Board选择列表 + +endchoice + +orsource "../../device/soc/*/Kconfig.liteos_m.defconfig" --- 加载所有SoC的默认配置定义 + +choice + prompt "SoC Series Selection" + +orsource "../../device/soc/*/Kconfig.liteos_m.series" --- 提供所有SoC Series选择列表 + +endchoice + +orsource "../../device/soc/*/Kconfig.liteos_m.soc" --- 加载所有SoC配置 +``` + +从`//kernel/liteos_m/Kconfig`文件可以看出需要在`//device/board/fnlink`目录下新增如下`Kconfig`文件进行适配： + +``` +. +├── v200zr --- v200zr单板配置目录 +│   ├── Kconfig.liteos_m.board --- 提供v200zr单板的配置选项 +│   ├── Kconfig.liteos_m.defconfig.board --- 提供v200zr单板的默认配置项 +│   └── liteos_m +│   └── config.gni +├── Kconfig.liteos_m.boards --- 提供fnlink单板厂商下Boards配置信息 +├── Kconfig.liteos_m.defconfig.boards --- 提供fnlink单板厂商下Boards默认配置信息 +├── Kconfig.liteos_m.shields --- 提供fnlink单板厂商下扩展板配置信息 +└── shields --- fnlink单板厂商的扩展板目录 + ├── v200zr-t0 --- fnlink单板厂商的扩展板v200zr-t0 + │   ├── Kconfig.liteos_m.defconfig.shield --- 扩展板v200zr-t0默认配置 + │   └── Kconfig.liteos_m.shield --- 扩展板v200zr-t0配置信息 + ├── v200zr-t1 + │   ├── Kconfig.liteos_m.defconfig.shield + │   └── Kconfig.liteos_m.shield + └── Kconfig.liteos_m.shields +``` + +在 `v200zr/Kconfig.liteos_m.board`需要配置选择该单板的选项，以及它依赖的`SoC`，如下： + +``` +config BOARD_v200zr + bool "select board v200zr" + depends on SOC_BES2600W --- v200zr单板用的bes2600w的SoC，只有 bes2600w的SoC被选择后，v200zr单板配置选项才可见，可以被选择。 +``` + +在 `v200zr/Kconfig.liteos_m.defconfig.board`需要配置选择该单板后，默认定义 `BOARD` 的名字为 `"v200zr"` ，如下： + +``` +if BOARD_v200zr +config BOARD + string --- string后没有带提示，因此用户不可见 + default "v200zr" + +endif # BOARD_v200zr +``` + +从`//kernel/liteos_m/Kconfig`文件可以看出需要在`//device/soc/bestechnic`目录下新增如下`Kconfig`文件进行适配： + +``` +. +├── bes2600 --- bes2600 SoC系列 +│   ├── Kconfig.liteos_m.defconfig.bes2600w --- bestechnic芯片厂商bes2600w SoC Series配置 +│   ├── Kconfig.liteos_m.defconfig.series --- bestechnic芯片厂商bes2600默认配置 +│   ├── Kconfig.liteos_m.series --- bestechnic芯片厂商bes2600 SoC Series配置 +│   └── Kconfig.liteos_m.soc --- bestechnic芯片厂商bes2600 SoC配置 +├── Kconfig.liteos_m.defconfig --- bestechnic芯片厂商SoC默认配置 +├── Kconfig.liteos_m.series --- bestechnic芯片厂商SoC Series配置 +└── Kconfig.liteos_m.soc --- bestechnic芯片厂商 SoC配置 +``` + +在 `bes2600/Kconfig.liteos_m.series` 需要配置`bes2600 SoC series`，以及它的芯片架构等信息，如下： + +``` +config SOC_SERIES_BES2600 --- 提供bes2600 SoC Series选项 + bool "Bestechnic 2600 Series" + select ARM --- 选择bes2600后，默认选择ARM架构 + select SOC_COMPANY_BESTECHNIC --- 选择bes2600后，默认选择bestechnic芯片公司，驱动会依赖这个宏配置，选择配置编译对应厂商的驱动 + select CPU_CORTEX_M33 --- 选择bes2600后，默认选择cortex-m33 CPU + help + Enable support for Bestechnic 2600 series +``` + +在 `bes2600/Kconfig.liteos_m.soc` 需要提供`bes2600 SoC series`下有多少个具体的`SoC`可供选择，如下： + +``` +choice + prompt "Bestechnic 2600 series SoC" + depends on SOC_SERIES_BES2600 --- 只有选择了bes2600 Series后，才会出现如下配置选项 + +config SOC_BES2600W --- 增加bes2600w SoC配置选择项 + bool "SoC BES2600w" + +endchoice +``` + +在 `bes2600/Kconfig.liteos_m.defconfig.series` 需要提供`bes2600 SoC series`选择后的默认配置，如下： + +``` +if SOC_SERIES_BES2600 --- 选择了bes2600 Series后，才会增加如下默认配置选项 + +rsource "Kconfig.liteos_m.defconfig.bes2600w" --- 增加bes2600w SoC的默认配置 + +config SOC_SERIES --- 增加SOC_SERIES的默认配置 + string + default "bes2600" + +endif +``` + +配置完成后，还需要根据 `kernel/liteos_m/Makefile` 文件配置`make menuconfig`的`defconfig`保存路径： + +``` +ifeq ($(TEE:1=y),y) +tee = _tee +endif +ifeq ($(RELEASE:1=y),y) +CONFIG ?= $(PRODUCT_PATH)/kernel_configs/release$(tee).config +else +CONFIG ?= $(PRODUCT_PATH)/kernel_configs/debug$(tee).config --- 配置文件保存在$(CONFIG)中，由产品最终定义 +endif + +…… + +update_config menuconfig: + $(HIDE)test -f "$(CONFIG)" && cp -v "$(CONFIG)" .config && menuconfig $(args) && savedefconfig --out "$(CONFIG)" +``` + +在这个例子中，`defconfig`配置路径为 `$(PRODUCT_PATH)/kernel_configs/debug.config`，创建该文件后，内容为空，产品的目录文件结构如下： + +``` +. +└── display_demo + ├── config.json + └── kernel_configs + └── debug.config +``` + +配置完成后，在 `kernel/liteos_m` 目录下执行 `make menuconfig`能够对`SoC Series`/`SoC`/`Board`进行选择，如下： + +![board make menuconfig](figure/bes2600_board_make_menuconfig.png) + +结果将自动保存在`$(PRODUCT_PATH)/kernel_configs/debug.config`，下次执行`make menuconfig`时会导出保存的结果。 + +### gn编译适配 + +在上一步`Kconfig`的图形化配置后，将其生成的配置结果可以作为`gn`编译的输入，以控制不同模块是否编译。另外为了解决之前`gn`编写时，随意include的问题，内核编译做了模块化编译的设计，使得整个编译逻辑更加清晰，设计思路请参考[LiteOS-M内核BUILD.gn编写指南](https://gitee.com/caoruihong/kernel_liteos_m/wikis/LiteOS-M%E5%86%85%E6%A0%B8BUILD.gn%E7%BC%96%E5%86%99%E6%8C%87%E5%8D%97)。 + +在 `kernel/liteos_m/BUILD.gn` 中，指定了`Board`和`SoC`的编译入口为`//device/board/fnlink`和`//device/soc/bestechnic`。 + +``` +deps += [ "//device/board/$device_company" ] +deps += [ "//device/soc/$LOSCFG_SOC_COMPANY" ] +``` + +在`//device/board/fnlink/BUILD.gn`中，新增内容如下： + +``` +if (ohos_kernel_type == "liteos_m") { --- 由于多内核设计，对于LiteOS-M内核适配，需要用宏来隔离 + import("//kernel/liteos_m/liteos.gni") --- 引入内核gn编写模板 + module_name = get_path_info(rebase_path("."), "name") --- 动态获取当前文件目录作为模块名，防止目录名修改后，这里还需要跟着修改 + module_group(module_name) { --- 采用module_group模板 + modules = [ --- 添加需要编译的模块 + ] + } +} +``` + +同理`//device/soc/bestechnic/BUILD.gn`也是一样。 + +### 内核启动适配 + +内核启动适配的文件路径在 `//device/soc/bestechnic/bes2600/liteos_m/sdk/bsp/rtos/liteos/liteos_m/board.c` + +内核启动适配总体思路如下： + +1. 中断向量的初始化`os_vector_init` ，初始化中断的处理函数。 +2. 内核初始化`osKernelInitialize` 。 +3. 创建线程`board_main`，进行芯片平台初始化。 +4. 内核启动，开始调度线程`osKernelStart` 。 + +其中，本章节详细对第3步进行展开，其他几步为对内核函数调用，不作详细描述。 + +第3步中`board_main`在启动`OHOS_SystemInit`之前，需要初始化必要的动作，如下： + +``` +... + if(!ret) { + ... + OhosSystemAdapterHooks(); --- 系统启动时候设置钩子，启动OpenHarmonyOHOS_SystemInit的之前完成打印和驱动的初始化 + ... + OHOS_SystemInit(); --- 启动OpenHarmony服务，以及组件初始化 + } +.... +``` + +`OhosSystemAdapterHooks`函数在`device/soc/bestechnic/bes2600/liteos_m/components/utils/src/hm_sys.c`文件中，如下： + +``` +int OhosSystemAdapterHooks(void) +{ + init_trace_system(); --- 初始化打印函数 + DeviceManagerStart(); --- 调用DeviceManagerStart函数进行HDF驱动初始化，这个过程会调用单板代码中的驱动配置文件hdf.hcs以及drivers源码实现 + return 0; +} + +``` + +### littlefs文件系统移植 + +文件系统使用的是`littlefs`，适配过程中，需要在指定路径下放置文件系统预置文件，根据配置可自动生成文件系统镜像，可以实现自动化生成和打包到烧录包中。 + +1. 配置指定目录放置打包文件系统`config.json`，通过`flash_partition_dir`指定目录： + +``` + "flash_partition_dir": "fs" --- 表示在vendor/bestechnic/display_demo/fs目录下放置文件系统预置文件 +``` + +2. 在指定目录`vendor/bestechnic/display_demo/fs`下放置两部分内容： + + - `wifi_Download_cfg.yaml`：镜像的烧录配置文件，可以根据实际情况调整分区。 + - `/data/data`：第一个/`data`是挂载的根目录；第二个`data`是根目录里面的`data`目录，里面可以存放预置文件，或者在第二个`data`的同级目录再创建一个目录，打包的时候只认第一个`data`挂载根目录。 + +3. `config.json`中根据`wifi_Download_cfg.yaml`最后调整结果。 + + - `fs_src`配置文件系统挂载名字。 + - `fs_name`是最后生成文件系统的名字。 + - `block_size`配置成`4K`对齐，建议不修改。 + - `fs_size`是生成文件系统的大小。 + - `burn_name`是烧录`bin`名字的大小。 + - `enable` 表示是否生成这个文件系统 + +4. 在`//device/soc/bestechnic/bes2600/liteos_m/components/hdf_config/hdf.hcs`文件配置文件系统的烧录的起始地址、文件系统的大小以及读数据块的大小`block_size`等信息，参考配置如下： + +``` + misc { + fs_config { + littlefs_config { + match_attr = "littlefs_config"; + mount_points = ["/data"]; + partitions = [10]; + block_size = [4096]; + block_count = [1024]; + } + } + storage_config { + flash_config { + match_attr = "flash_config"; + partitions = [10]; + owner = [0]; + description = ["littlefs"]; + start_addr = [0xB60000]; + length = [0x400000]; + options = [3]; + } + } + } +``` + +最后在`device/soc/bestechnic/bes2600/liteos_m/components/fs/fs_init.c`中，通过`hdf`加载数据，进行读写`flash`，如下： + +``` +static int32_t FsDriverInit(struct HdfDeviceObject *object) +{ + if (object == NULL) { + return HDF_FAILURE; + } + if (object->property) { + if (FsGetResource(fs, object->property) != HDF_SUCCESS) { + HDF_LOGE("%s: FsGetResource failed", __func__); + return HDF_FAILURE; + } + } + for (int i = 0; i < sizeof(fs) / sizeof(fs[0]); i++) { + if (fs[i].mount_point == NULL) + continue; + + fs[i].lfs_cfg.read = littlefs_block_read; + fs[i].lfs_cfg.prog = littlefs_block_write; + fs[i].lfs_cfg.erase = littlefs_block_erase; + fs[i].lfs_cfg.sync = littlefs_block_sync; + + fs[i].lfs_cfg.read_size = 256; + fs[i].lfs_cfg.prog_size = 256; + fs[i].lfs_cfg.cache_size = 256; + fs[i].lfs_cfg.lookahead_size = 16; + fs[i].lfs_cfg.block_cycles = 1000; + + SetDefaultMountPath(i, fs[i].mount_point); + int ret = mount(NULL, fs[i].mount_point, "littlefs", 0, &fs[i].lfs_cfg); + HDF_LOGI("%s: mount fs on '%s' %s\n", __func__, fs[i].mount_point, (ret == 0) ? "succeed" : "failed"); + } + return HDF_SUCCESS; +} +``` + + + +### C库适配 + +在轻量系统中，C库适配比较复杂，设计思路请参考[LiteOS-M内核支持musl与newlib平滑切换方案](https://gitee.com/arvinzzz/ohos_kernel_design_specification/blob/master/liteos_m/%E6%94%AF%E6%8C%81newlib/%E5%86%85%E6%A0%B8%E9%80%82%E9%85%8Dnewlib%E6%96%B9%E6%A1%88%E6%80%9D%E8%B7%AF.md)，由于我们的工具链采用 [gcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2](https://gitee.com/link?target=https%3A%2F%2Fdeveloper.arm.com%2F-%2Fmedia%2FFiles%2Fdownloads%2Fgnu-rm%2F10.3-2021.10%2Fgcc-arm-none-eabi-10.3-2021.10-x86_64-linux.tar.bz2) 自带`newlib`的C库，那么系统移植整体采用`newlib`的C库。那么在内核的`make menuconfig`中选择`newlib`，如下图： + +![image-20211212191013553](figure/bes2600_newlib_make_menuconfig.png) + +#### malloc适配 + +malloc适配参考[The Red Hat newlib C Library-malloc](https://sourceware.org/newlib/libc.html#malloc)。实现malloc适配有以下两种方法： + +- 实现 `_sbrk_r` 函数。这种方法中，内存分配函数使用`newlib`中的。 + +- 实现 `_malloc_r`, `_realloc_r`, `_reallocf_r`, `_free_r`, `_memalign_r`, 和 `_malloc_usable_size_r`。这种方法中，内存分配函数可以使用内核的。 + +为了方便地根据业务进行内存分配算法调优和问题定位，在这两种方法中，本案例选择后者。 + +首先，由于`newlib`中已经存在这些函数的符号，因此需要用到`gcc`的`wrap`的链接选项替换这些函数符号为内核的实现，内核的实现为 `//kernel/liteos_m/kal/libc/newlib/porting/src/malloc.c`。 + +然后，在`//device/board/fnlink/v200zr/liteos_m/config.gni`的新增这些函数的`wrap`链接选项。 + +``` +board_ld_flags += [ + "-Wl,--wrap=_malloc_r", + "-Wl,--wrap=_realloc_r", + "-Wl,--wrap=_reallocf_r", + "-Wl,--wrap=_free_r", + "-Wl,--wrap=_memalign_r", + "-Wl,--wrap=_malloc_usable_size_r", +] +``` + +#### vsprintf等适配 + +参考 https://sourceware.org/newlib/libc.html#vfprintf ，实现 `vprintf`, `vfprintf`, `printf`, `snprintf` 和`sprintf`。 + +类似`malloc`适配，首先要提供这些函数的实现，`//device/soc/bestechnic/bes2600/liteos_m/components/utils/src/printf.c`，本案例直接采用开源协议友好的实现。与`malloc`适配不同的是，这个函数由芯片原厂提供。因为就打印来说，根据项目的需要，实现可大可小，内核不方便提供统一的实现。 + +然后，在`//device/board/fnlink/v200zr/liteos_m/config.gni`的新增这些函数的wrap链接选项。 + +``` +board_ld_flags += [ + "-Wl,--wrap=printf", + "-Wl,--wrap=sprintf", + "-Wl,--wrap=snprintf", + "-Wl,--wrap=vsnprintf", + "-Wl,--wrap=vprintf", +] +``` + +#### open等适配 + +这部分实现由内核统一实现，芯片适配无须关注，内核文件`//kernel/liteos_m/kal/libc/newlib/porting/src/fs.c`，适配了`newlib`的`_read`、`_write`等函数，如下： + +``` +…… +ssize_t _read(int fd, void *buf, size_t nbyte) +{ + return LOS_Read(fd, buf, nbyte); +} + +ssize_t _write(int fd, const void *buf, size_t nbyte) +{ + return LOS_Write(fd, buf, nbyte); +} + +off_t _lseek(int fd, off_t offset, int whence) +{ + return LOS_Lseek(fd, offset, whence); +} +…… +``` + +## 板级系统移植 + +### 驱动移植 + +#### SoC芯片平台HDF驱动移植 + +驱动适配相关文件放置在`drivers/adapter/platform`中，对应有`gpio`，`i2c`，`pwm`，`spi`，`uart`，`watchdog`，都是通过`HDF`机制加载，本章节以`gpio`为例进行详细说明。 + +##### GPIO驱动适配 + +`gpio`驱动适配需要完成编译的适配、源码的适配。 + +在`//drivers/adapter/platform/gpio/BUILD.gn`文件中，描述了恒玄`gpio`驱动的编译适配。如下： + +``` +module_switch = defined(LOSCFG_DRIVERS_HDF_PLATFORM_GPIO) --- 如果打开HDF的GPIO配置开关，才进行如下编译 +module_name = get_path_info(rebase_path("."), "name") + +hdf_driver(module_name) { + sources = [] + if (defined(LOSCFG_SOC_COMPANY_BESTECHNIC)) { --- 如果打开恒玄的芯片配置开关，才进行恒玄GPIO的驱动编译 + sources += [ "gpio_bes.c" ] + } + + include_dirs = [ "." ] +} +``` + +在`//drivers/adapter/platform/gpio/gpio_bes.c`文件中，描述了恒玄`gpio`驱动的源码适配。 +首先，按照`OpenHarmony`的`HDF`驱动框架加载驱动基本适配框架，如下： + +``` +struct HdfDriverEntry g_GpioDriverEntry = { + .moduleVersion = 1, + .moduleName = "BES_GPIO_MODULE_HDF", + .Bind = GpioDriverBind, + .Init = GpioDriverInit, + .Release = GpioDriverRelease, +}; +HDF_INIT(g_GpioDriverEntry); --- 通过HDF_INIT 加载GPIO驱动 +``` + +然后，在初始化的时候会获取`hcs`参数进行初始化，如下： + +``` +static int32_t GpioDriverInit(struct HdfDeviceObject *device) +{ + int32_t ret; + struct GpioCntlr *gpioCntlr = NULL; + + if (device == NULL) { + HDF_LOGE("%s: device is NULL", __func__); + return HDF_ERR_INVALID_PARAM; + } + + gpioCntlr = GpioCntlrFromDevice(device); --- gpioCntlr节点变量就可以获取具体gpio配置 + if (gpioCntlr == NULL) { + ... +``` + +编码规范和设计思想见[bes 驱动适配PR](https://gitee.com/openharmony/drivers_adapter/pulls/278)的评论。 + +#### Board外设器件HDF驱动移植 + +`Board`外设器件表示通过`SoC`平台总线连接的外设器件，在本案例中，显示屏属于外设器件，其驱动适配放在`//device/board/fnlink/drivers/liteos_m`目录中。 + +##### 显示驱动适配 + +同`SoC`驱动适配，在`//device/board/fnlink/drivers/liteos_m/display/BUILD.gn`文件中，根据`hdf_driver`模板加载驱动模块，如下： + +``` +module_name = get_path_info(rebase_path("."), "name") +hdf_driver(module_name) { + sources = [ + "zzw395.c", + ] + include_dirs = [ + "//drivers/peripheral/display/interfaces/include", + ... + ] +} +``` + +在`//device/board/fnlink/drivers/liteos_m/display/zzw395.c`文件中，根据驱动框架加载显示驱动，如下： + +``` +static struct HdfDriverEntry g_ZZW395DriverEntry = { + .moduleVersion = 1, + .moduleName = "HDF_PANEL_ZZW395", + .Bind = PanelDriverBind, + .Init = PanelDriverInit, + .Release = PanelDriverRelease, +}; + +HDF_INIT(g_ZZW395DriverEntry); +``` + +其中的驱动参数根据`hcs`配置，在`PanelDriverInit`初始化时加载，如下： + +``` +static int32_t PanelDriverInit(struct HdfDeviceObject *object) +{ + if (object == NULL) { + return HDF_FAILURE; + } + HDF_LOGD("%s entry !!!", __func__); + if (object->property) { + if (PanelGetResource(&priv, object->property) != HDF_SUCCESS) { + HDF_LOGE("%s: PanelGetResource failed", __func__); + return HDF_FAILURE; + } + } +... +``` + +### OpenHarmony子系统适配 + +`OpenHarmony`子系统适配一般包含两部分： + +- 在`config.json`中增加对应子系统和部件，这样编译系统会将该部件纳入编译目标中。 +- 针对该部件的`HAL`层接口进行硬件适配，或者可选的软件功能适配。 + +#### communication子系统适配 + +##### wifi_lite部件适配 + +首先，在`config.json`文件中，增加`communication`子系统的`wifi_lite`部件，如下： + +``` + { + "subsystem": "communication", + "components": [ + { + "component": "wifi_lite", + "optional": "true" + } + ] + }, +``` + +`wifi_lite`部件在`//build/lite/components/communication.json`文件中，描述如下： + +``` + { + "component": "wifi_lite", +…… + "targets": [ + "//foundation/communication/wifi_lite:wifi" --- wifi_lite的编译目标 + ], +…… + }, + +``` + +在`//foundation/communication/wifi_lite/BUILD.gn`文件中，描述需要适配的接口头文件路径，如下： + +``` +config("include") { + include_dirs = [ "interfaces/wifiservice" ] --- 因为wifi_lite只提供头文件，不提供wifi的具体实现，所以wifi模块暴露出适配的目录路径提供给硬件厂商来适配，厂商提供wifi协议栈源码实现。 +} + +group("wifi") { + public_configs = [ ":include" ] +} +``` + +因为在本案例中，`wifi`属于`SoC`提供的功能，所以适配源码放在`SoC`的`//device/soc/bestechnic/hals/communication/wifi_lite/wifiservice`目录下，包含`wifi_device.c`和`wifi_hotspot.c`分别适配`wifi_device.h`和`wifi_hotspot.h`。如下： + +``` +…… +WifiErrorCode Scan(void) --- wifi_device.c中扫描wifi热点的函数，对wifi_device.h中Scan函数的适配实现 +{ + WifiErrorCode ret = ERROR_WIFI_BUSY; + + + if (IsWifiActive() != WIFI_STA_ACTIVE) + return ERROR_WIFI_IFACE_INVALID; + + if (g_HalHmosWifiInfo.scan_state == SCAN_REQUEST || + g_HalHmosWifiInfo.scan_state == SCAN_TRIGGER) + return ERROR_WIFI_BUSY; + + HalHmosWifiLock(); + ret = ((HalHmosSendEvent(HMOS_ON_WIFI_SCAN_STATE_CHANGED, NULL) == 0) ? WIFI_SUCCESS : ERROR_WIFI_BUSY); + HalHmosWifiUnLock(); + + return ret; +} +…… +int GetSignalLevel(int rssi, int band) --- wifi_hotspot.c中获取wifi信号热点函数，对wifi_hotspot.h中GetSignalLevel函数的适配实现。 +{ + if (band == HOTSPOT_BAND_TYPE_2G) { + if (rssi >= RSSI_LEVEL_4_2_G) + return RSSI_LEVEL_4; + if (rssi >= RSSI_LEVEL_3_2_G) + return RSSI_LEVEL_3; + if (rssi >= RSSI_LEVEL_2_2_G) + return RSSI_LEVEL_2; + if (rssi >= RSSI_LEVEL_1_2_G) + return RSSI_LEVEL_1; + } + + if (band == HOTSPOT_BAND_TYPE_5G) { + if (rssi >= RSSI_LEVEL_4_5_G) + return RSSI_LEVEL_4; + if (rssi >= RSSI_LEVEL_3_5_G) + return RSSI_LEVEL_3; + if (rssi >= RSSI_LEVEL_2_5_G) + return RSSI_LEVEL_2; + if (rssi >= RSSI_LEVEL_1_5_G) + return RSSI_LEVEL_1; + } + return ERROR_WIFI_INVALID_ARGS; +} +``` + +##### LWIP部件适配 + +`LiteOS-M kernel`目录下默认配置了`lwip`，因而具有编译功能，可以在`kernel`组件中指定`lwip`编译的目录。如下： + +``` + { + "subsystem": "kernel", + "components": [ + { + "component": "liteos_m", + "features": [ + "ohos_kernel_liteos_m_lwip_path = \"//device/soc/bestechnic/bes2600/liteos_m/components/net/lwip-2.1\"" --- 指定在芯片厂商目录中进行适配 + ] + } + ] + }, +``` + +在`//device/soc/bestechnic/bes2600/liteos_m/components/net/lwip-2.1/BUILD.gn`文件中，描述了`lwip`的编译，如下： + +``` +import("//kernel/liteos_m/liteos.gni") +import("$LITEOSTHIRDPARTY/lwip/lwip.gni") +import("$LITEOSTOPDIR/components/net/lwip-2.1/lwip_porting.gni") + +module_switch = defined(LOSCFG_NET_LWIP_SACK) +module_name = "lwip" +kernel_module(module_name) { + sources = LWIP_PORTING_FILES + LWIPNOAPPSFILES - + [ "$LWIPDIR/api/sockets.c" ] + [ "porting/src/ethernetif.c" ] --- 增加ethernetif.c文件，用以适配ethernet网卡的初始化适配 + defines = [ "LITEOS_LWIP=1" ] + defines += [ "CHECKSUM_BY_HARDWARE=1" ] +} + +config("public") { + defines = [ "_BSD_SOURCE=1" ] + include_dirs = + [ "porting/include" ] + LWIP_PORTING_INCLUDE_DIRS + LWIP_INCLUDE_DIRS +} + +``` + +在`//device/soc/bestechnic/bes2600/liteos_m/components/net/lwip-2.1/porting/include/lwip/lwipopts.h`文件中，说明原有`lwip`配置选项保持不变，软总线会依赖这些配置选项，并且新增硬件适配的配置项，如下： + +``` +#ifndef _PORTING_LWIPOPTS_H_ +#define _PORTING_LWIPOPTS_H_ + +#include_next "lwip/lwipopts.h" --- 保持原来的配置项不变 + +#define LWIP_NETIF_STATUS_CALLBACK 1 +#define LWIP_CHECKSUM_ON_COPY 0 +#define CHECKSUM_GEN_UDP 0 --- 新增硬件适配选项 + +#endif /* _PORTING_LWIPOPTS_H_ */ + +``` + +在`//device/soc/bestechnic/bes2600/liteos_m/components/net/lwip-2.1/porting/src/ethernetif.c`文件中，说明对`ethernet`网卡初始化的适配，如下： + +``` +err_t +ethernetif_init(struct netif *netif) +{ +…… +#ifdef CHECKSUM_BY_HARDWARE + eth_hw_checksum_init(); +#endif +…… + netif->linkoutput = low_level_output; + + netif->drv_send = liteos_low_level_output; + netif->hwaddr_len = NETIF_MAX_HWADDR_LEN; + low_level_init(netif); + driverif_init(netif); + return ERR_OK; +…… +} +``` + +#### 系统基本能力适配 + +本小节主要从移植的角度出发，分析适配过程中，需要操作或者注意的事项。 + +##### startup子系统适配 + +``startup`子系统适配`bootstrap_lite`/`syspara_lite`两个部件。请在`vendor/bestechnic_bak/display_demo/config.json`中新增对应的配置选项。 + +``` +{ + "subsystem": "startup", + "components": [ + { + "component": "bootstrap_lite" --- bootstrap_lite 部件 + }, + { + "component": "syspara_lite", --- syspara_lite 部件 + "features": [ + "enable_ohos_startup_syspara_lite_use_posix_file_api = true" + ] + } + ] +}, +``` + +适配`bootstrap_lite`部件时，需要在连接脚本文件`//device/soc/bestechnic/bes2600/liteos_m/sdk/bsp/out/best2600w_liteos/_best2001.lds`中手动新增如下段： + +``` + __zinitcall_bsp_start = .; + KEEP (*(.zinitcall.bsp0.init)) + KEEP (*(.zinitcall.bsp1.init)) + KEEP (*(.zinitcall.bsp2.init)) + KEEP (*(.zinitcall.bsp3.init)) + KEEP (*(.zinitcall.bsp4.init)) + __zinitcall_bsp_end = .; + __zinitcall_device_start = .; + KEEP (*(.zinitcall.device0.init)) + KEEP (*(.zinitcall.device1.init)) + KEEP (*(.zinitcall.device2.init)) + KEEP (*(.zinitcall.device3.init)) + KEEP (*(.zinitcall.device4.init)) + __zinitcall_device_end = .; + __zinitcall_core_start = .; + KEEP (*(.zinitcall.core0.init)) + KEEP (*(.zinitcall.core1.init)) + KEEP (*(.zinitcall.core2.init)) + KEEP (*(.zinitcall.core3.init)) + KEEP (*(.zinitcall.core4.init)) + __zinitcall_core_end = .; + __zinitcall_sys_service_start = .; + KEEP (*(.zinitcall.sys.service0.init)) + KEEP (*(.zinitcall.sys.service1.init)) + KEEP (*(.zinitcall.sys.service2.init)) + KEEP (*(.zinitcall.sys.service3.init)) + KEEP (*(.zinitcall.sys.service4.init)) + __zinitcall_sys_service_end = .; + __zinitcall_sys_feature_start = .; + KEEP (*(.zinitcall.sys.feature0.init)) + KEEP (*(.zinitcall.sys.feature1.init)) + KEEP (*(.zinitcall.sys.feature2.init)) + KEEP (*(.zinitcall.sys.feature3.init)) + KEEP (*(.zinitcall.sys.feature4.init)) + __zinitcall_sys_feature_end = .; + __zinitcall_run_start = .; + KEEP (*(.zinitcall.run0.init)) + KEEP (*(.zinitcall.run1.init)) + KEEP (*(.zinitcall.run2.init)) + KEEP (*(.zinitcall.run3.init)) + KEEP (*(.zinitcall.run4.init)) + __zinitcall_run_end = .; + __zinitcall_app_service_start = .; + KEEP (*(.zinitcall.app.service0.init)) + KEEP (*(.zinitcall.app.service1.init)) + KEEP (*(.zinitcall.app.service2.init)) + KEEP (*(.zinitcall.app.service3.init)) + KEEP (*(.zinitcall.app.service4.init)) + __zinitcall_app_service_end = .; + __zinitcall_app_feature_start = .; + KEEP (*(.zinitcall.app.feature0.init)) + KEEP (*(.zinitcall.app.feature1.init)) + KEEP (*(.zinitcall.app.feature2.init)) + KEEP (*(.zinitcall.app.feature3.init)) + KEEP (*(.zinitcall.app.feature4.init)) + __zinitcall_app_feature_end = .; + __zinitcall_test_start = .; + KEEP (*(.zinitcall.test0.init)) + KEEP (*(.zinitcall.test1.init)) + KEEP (*(.zinitcall.test2.init)) + KEEP (*(.zinitcall.test3.init)) + KEEP (*(.zinitcall.test4.init)) + __zinitcall_test_end = .; + __zinitcall_exit_start = .; + KEEP (*(.zinitcall.exit0.init)) + KEEP (*(.zinitcall.exit1.init)) + KEEP (*(.zinitcall.exit2.init)) + KEEP (*(.zinitcall.exit3.init)) + KEEP (*(.zinitcall.exit4.init)) + __zinitcall_exit_end = .; +``` + +需要新增上述段是因为`bootstrap_init`提供的对外接口，见`//utils/native/lite/include/ohos_init.h`文件，采用的是灌段的形式，最终会保存到上述链接段中。主要的服务自动初始化宏如下表格所示： + +| 接口名 | 描述 | +| ---------------------- | -------------------------------- | +| SYS_SERVICE_INIT(func) | 标识核心系统服务的初始化启动入口 | +| SYS_FEATURE_INIT(func) | 标识核心系统功能的初始化启动入口 | +| APP_SERVICE_INIT(func) | 标识应用层服务的初始化启动入口 | +| SYS_FEATURE_INIT(func) | 标识应用层功能的初始化启动入口 | + +![](../public_sys-resources/icon-note.gif) **说明：** + 通过上面加载的组件编译出来的lib文件需要手动加入强制链接。 + +​ 如在 `vendor/bestechnic/display_demo/config.json` 中配置了`bootstrap_lite` 部件 + +``` + { + "subsystem": "startup", + "components": [ + { + "component": "bootstrap_lite" + }, + ... + ] + }, +``` + +​ `bootstrap_lite`部件会编译`//base/startup/bootstrap_lite/services/source/bootstrap_service.c`，该文件中，通过`SYS_SERVICE_INIT`将`Init`函数符号灌段到`__zinitcall_sys_service_start`和`__zinitcall_sys_service_end`中，由于`Init`函数是没有函数显示调用它，所以需要将它强制链接到最终的镜像。如下： + +``` +static void Init(void) +{ + static Bootstrap bootstrap; + bootstrap.GetName = GetName; + bootstrap.Initialize = Initialize; + bootstrap.MessageHandle = MessageHandle; + bootstrap.GetTaskConfig = GetTaskConfig; + bootstrap.flag = FALSE; + SAMGR_GetInstance()->RegisterService((Service *)&bootstrap); +} +SYS_SERVICE_INIT(Init); --- 通过SYS启动即SYS_INIT启动就需要强制链接生成的lib +``` + +​ 在`//base/startup/bootstrap_lite/services/source/BUILD.gn`文件中，描述了在`out/v200zr/display_demo/libs` 生成 `libbootstrap.a`，如下： + +``` +static_library("bootstrap") { + sources = [ + "bootstrap_service.c", + "system_init.c", + ] + .... +``` + +​ 那么需要在 `vendor/bestechnic/display_demo/config.json` 配置强制链接库`bootstrap`，如下： + +``` + "bin_list": [ + { + "elf_name": "wifiiot", + "bsp_target_name": "best2600w_liteos", + "signature": "false", + "burn_name": "rtos_main", + "enable": "true", + "force_link_libs": [ + "bootstrap", --- 强制链接libbootstrap.a + ... + ] + }, +``` + + + +适配`syspara_lite`部件时，系统参数会最终写到文件中进行持久化保存。在轻量系统中，文件操作相关接口有`POSIX`接口与`HalFiles`接口这两套实现。 + +因为对接内核的文件系统，采用`POSIX`相关的接口，所以`features`字段中需要增加`enable_ohos_startup_syspara_lite_use_posix_file_api = true`。 + +如果对接`HalFiles`相关的接口实现的，则无须修改。 + +在适配`GetSerial`接口时，开发板不像产线生产过程那样，会写入一个具体的`Serial Number`，因而需要确定一个数据对开发板进行唯一标识。本案例采用`WiFi Mac`地址进行适配。 + +``` +#define ETH_ALEN 6 +#define MAC_BITS 4 +#define MAC_HIGH_MASK 0xf0 +#define MAC_LOW_MASK 0x0f +#define HEX_A 0xa +#define CHAR_NUM_OFFSET 0x30 +#define CHAR_CAPITAL_OFFSET 0x37 +#define STR_END_FLAG '\0' + +typedef unsigned char u8; + +static char serialNumber[2*ETH_ALEN + 1]; --- 最后一位留作'\0'结束符标识 + + +static char Hex2Char(u8 hex) +{ + if (hex < HEX_A) { + return hex + CHAR_NUM_OFFSET; --- 将数值0转为char的'0' + } else { + return hex + CHAR_CAPITAL_OFFSET; --- 将数值0xa转为char的'A' + } +} + +const char* HalGetSerial(void) +{ + char macAddr[ETH_ALEN]; + // as devboard has no production serial number, we just + // use wifi mac address as device serial number. + if (serialNumber[0] == STR_END_FLAG) { --- 只有第一次调用时，才去获取mac地址 + extern int bwifi_get_own_mac(u8 *addr); + bwifi_get_own_mac(macAddr); --- 获取mac地址 + int j = 0; + for (int i = 0; i < ETH_ALEN; i++) { + u8 lowFour, highFour; + highFour = (macAddr[i] & MAC_HIGH_MASK) >> MAC_BITS; + serialNumber[j] = Hex2Char(highFour); + j++; + lowFour = macAddr[i] & MAC_LOW_MASK; + serialNumber[j] = Hex2Char(lowFour); + j++; + } --- 将mac地址值转化为serial number + } + return serialNumber; +} +``` + + + +##### hiviewdfx子系统适配 + +进行`hiviewdfx`子系统适配需要添加`hilog_lite`部件，直接在`config.json`文件配置即可。 + +``` +{ + "subsystem": "hiviewdfx", + "components": [ + { + "component": "hilog_lite", + "optional": "true" + } + ] +}, +``` + +配置完成之后，在`//device/soc/bestechnic/bes2600/liteos_m/components/utils/src/hm_sys.c`中注册日志输出实现函数。 + +``` +boolean HilogProc_Impl(const HiLogContent *hilogContent, uint32 len) +{ + char tempOutStr[LOG_FMT_MAX_LEN] = {0}; + if (LogContentFmt(tempOutStr, sizeof(tempOutStr), hilogContent) > 0) { + printf(tempOutStr); +#ifdef LOG_FLUSH + hHiviewRegisterHilogProc(HilogProc_Impl);al_trace_flush_buffer(); +#endif + } + return TRUE; +} + +HiviewRegisterHilogProc(HilogProc_Impl); +``` + +##### distributedschedule子系统适配 + +进行`distributedschedule`子系统适配需要添加`samgr_lite`部件，直接在`config.json`配置即可。 + +``` +{ + "subsystem": "distributedschedule", + "components": [ + { + "component": "samgr_lite", + "features": [ + "config_ohos_distributedschedule_samgr_lite_shared_task_size = 4096" + ] + } + ] +}, +``` + +在轻量系统中，`samgr_lite`配置的共享任务栈大小默认为`0x800`。当函数调用栈较大时，会出现栈溢出的问题。在本次适配过程中，将其调整为`0x1000`。 + +##### utils子系统适配 + +进行`utils`子系统适配需要添加`kv_store`/`js_builtin`/`timer_task`/`kal_timer`部件，直接在`config.json`配置即可。 + +``` +{ + "subsystem": "utils", + "components": [ + { + "component": "kv_store", + "features": [ + "enable_ohos_utils_native_lite_kv_store_use_posix_kv_api = true" + ] + }, + { + "component": "js_builtin" + }, + { + "component": "timer_task" + }, + { + "component": "kal_timer", + } + ] +}, +``` + +与适配`syspara_lite`部件类似，适配`kv_store`部件时，键值对会写到文件中。在轻量系统中，文件操作相关接口有`POSIX`接口与`HalFiles`接口这两套实现。因为对接内核的文件系统，采用`POSIX`相关的接口，所以`features`需要增加`enable_ohos_utils_native_lite_kv_store_use_posix_kv_api = true`。如果对接`HalFiles`相关的接口实现的，则无须修改。 + +#### 图形显示子系统适配 + +##### graphic子系统适配 + +进行`graphic`子系统适配需要添加`graphic_utils`部件，直接在`config.json`配置即可。 + +``` + "components": [ + { + "component": "graphic_utils", + "features": [ + "enable_ohos_graphic_utils_product_config = true" + ] + }, + { + "component": "ui" + } + ] + } +``` + +`graphic`配置文件见 `//vendor/bestechnic/display_demo/graphic_config/product_graphic_lite_config.h`。 + +`graphic`适配见`//device/soc/bestechnic/bes2600/liteos_m/components/ui`, 主要功能如下： + +- `display_device`：实例化`BaseGfxEngine`。 +- `touch_input`：实例化`PointerInputDevice`。 +- `UiMainTask`：初始化字体引擎，执行渲染任务等。 + +`graphic`子系统层次： + +``` +aafwk_lite + appexecfwk_lite (AMS + BMS) + | +ace_engine_lite + jerryscript + i18n_lite + resmgr_lite + utils/native/lite/... (ACE,JS引擎及其依赖) + | +graphic_ui + graphic_utils (图形框架) + | +giflib + libjpeg + libpng + qrcodegen + freetype... (图形第三方库) +``` + +图形应用示例见文件`//vendor/bestechnic/display_demo/tests/app.cpp`，如下： + +``` +/* ui app entry */ +void RunApp() +{ +#ifdef UI_TEST + AnimatorDemoStart(); --- native ui demo +#elif defined(ABILITY_TEST) + StartJSApp(); --- js demo +#endif +} + +void AppEntry(void) +{ + UiMain(); +} + +APP_FEATURE_INIT(AppEntry); +``` + +##### ace子系统适配 + +进行`ace`子系统适配需要添加`ace_engine_lite`部件，直接在`config.json`配置即可。 + + { + "subsystem": "ace", + "components": [ + { + "component": "ace_engine_lite", + "features": [ + "enable_ohos_ace_engine_lite_product_config = true" + ] + } + ] + }, + +`ace_engine_lite`部件配置文件见 `//vendor/bestechnic/display_demo/ace_lite_config/product_acelite_config.h`。 + +`ace_lite`的应用采用js语言进行开发，详细步骤如下： + +1. 用`DevEco Studio`编写js应用，参考[轻量级智能穿戴开发](https://developer.harmonyos.com/cn/docs/documentation/doc-references/lite-wearable-file-0000001176751380)。 +2. 使用预览功能进行预览，并且得到js包：`entry\.preview\intermediates\res\debug\lite\assets\js\default`。 +3. 将js包放到对应的文件系统目录下，文件系统路径为`vendor/bestechnic/display_demo/fs/data/data/js`，如下： + +``` +├── app.js +├── common +├── i18n +├── manifest.json +└── pages +``` + +4. 最终编译生成系统镜像，烧录到单板后，系统会从`app.js`加载启动`ace`的应用。 + +##### aafwk子系统适配 + +进行`aafwk`子系统适配需要添加`aafwk_lite`部件，直接在`config.json`配置即可。 + +``` + { + "subsystem": "aafwk", + "components": [ + { + "component": "aafwk_lite", + "features": [ + "enable_ohos_appexecfwk_feature_ability = true", --- 支持FA特性，即包含图形能力 + "config_ohos_aafwk_ams_task_size = 4096" --- 配置ams栈的大小 + ] + } + ] + }, +``` + +`aafwk_lite`相关的应用样例见`vendor/bestechnic/display_demo/tests/ability`目录，包含`launcher`和`js app`这两类应用，应用的函数调用流程描述如下： + +1. `launcher`应用，通过`InstallLauncher`安装`BundleName`为 `"com.huawei.launcher"`的`native ui`应用，在`AbilityMgrSliteFeature`启动后会调用`AbilityMgrHandler::StartLauncher()`启动`launcher`应用。 + +2. `StartJSApp`应用，通过`StartAbility`启动任意`Want`，通过将`want data`传递`JS_APP_PATH`, + `SetWantData(&want, JS_APP_PATH, strlen(JS_APP_PATH) + 1)`。 + +##### appexecfwk子系统适配 + +进行`appexecfwk`子系统适配需要添加`appexecfwk_lite`部件，直接在`config.json`配置即可。 + +``` + { + "subsystem": "appexecfwk", + "components": [ + { + "component": "appexecfwk_lite" + } + ] + }, +``` + +## PCS兼容性认证 + +### XTS用例 + +`XTS`测试参考资料见[xts参考资料](https://www.openharmony.cn/xts/)，进行`XTS`子系统适配需要添加`xts_acts`/`xts_tools`部件，直接在`config.json`配置即可，配置如下： + + { + "subsystem": "xts", + "components": [ + { "component": "xts_acts", "features": + [ + "config_ohos_xts_acts_utils_lite_kv_store_data_path = \"/data\"", + "enable_ohos_test_xts_acts_use_thirdparty_lwip = true" + ] + }, + { "component": "xts_tools", "features":[] } + ] + } + +其中， + +- `config_ohos_xts_acts_utils_lite_kv_store_data_path` 是配置挂载文件系统根目录的名字。 +- `enable_ohos_test_xts_acts_use_thirdparty_lwip` 表示如果使用`thirdparty/lwip`目录下的源码编译，则设置为`true`，否则设置为`false`。 + +全部跑完会有显示`xx Tests xx Failures xx Ignored`，如下： + +``` +... +[16:53:43:438]../../../test/xts/acts/utils_lite/kv_store_hal/src/kvstore_func_test.c:793:testKvStoreMaxSize004:PASS +[16:53:43:438]+-------------------------------------------+ +[16:53:43:438] +[16:53:43:438]----------------------- +[16:53:43:438]32 Tests 0 Failures 0 Ignored +[16:53:43:438]OK +[16:53:43:439]All the test suites finished! +``` + +### 报告提交 + +将上图`XTS`用例的情况保存为测试报告，上传到`OpenHarmony`兼容性测试网站进行认证，作为`sig`仓库转正到`master`仓库的必要条件。详细步骤如下： + +步骤1：将`XTS`测试报告压缩成`zip`文件。 + +步骤2：生成测试报告的`SHA`校验码。本案例是将`zip`文件传到在线生成`hash`的[网站]( https://tool.lmeee.com/jiami/filehash)生成`SHA`校验码。 + +步骤3：进入`OpenHarmony`[兼容性测试网站](https://www.openharmony.cn/old/#/Compatibility_test)上传报告。 + + - 其中`API Level`填写报告中的`"sdkApiLevel"`字段 + - `OS`版本号填写报告中的`"OS Version"`字段。 + +步骤4：点击`个人空间`-`我的兼容性测试`看到查看审核状态。 +![审核状态](figure/bes2600_xts_state.png) + +## todo + +后续会补充以下方面的移植： + +- 蓝牙 +- `bms`包安装 +- 音频播放 +- 验证运行`JS`的`bytecode` +- 分布式能力：`dsoftbus`、`dms`、`dm` +- 分布式音乐播放器样例 + diff --git a/zh-cn/device-dev/porting/porting-minichip-cases.md b/zh-cn/device-dev/porting/porting-minichip-cases.md new file mode 100644 index 0000000000..7eeeed62ab --- /dev/null +++ b/zh-cn/device-dev/porting/porting-minichip-cases.md @@ -0,0 +1,4 @@ +# 轻量系统芯片移植案例 + +- **[轻量带屏解决方案之恒玄芯片移植案例](porting-bes2600w-on-minisystem-display-demo.md)** + diff --git a/zh-cn/readme.md b/zh-cn/readme.md index ac183bb6a8..e441fb9d73 100644 --- a/zh-cn/readme.md +++ b/zh-cn/readme.md @@ -24,6 +24,7 @@ - porting：移植适配 - [轻量和小型系统三方库移植指导](device-dev/porting/porting-thirdparty.md) - [轻量系统芯片移植指导](device-dev/porting/porting-minichip.md) + - [轻量系统芯片移植案例](device-dev/porting/porting-minichip-cases.md) - [小型系统芯片移植指导](device-dev/porting/porting-smallchip.md) - bundles：HPM Bundle开发 -- GitLab