Skip to content

D
Docs

OpenHarmony / Docs
大约 1 年 前同步成功

通知 159
Star 292
Fork 28
D
Docs

体验新版 GitCode，发现更多精彩内容 >>

提交 bc7e090c 编写于 作者: L liubb 提交者： openharmony_ci
浏览文件
操作

!81 【轻量级 PR】：modify utils readme 

Merge pull request !81 from liubb/N/A
上级 d42f1c2f
隐藏空白更改
内联 并排
Showing with 28 addition and 25 deletion
docs-en/readme/utils-library.md
浏览文件 @ bc7e090c
......@@ -6,40 +6,40 @@ The Utils library stores basic components of OpenHarmony. These basic components
The Utils library provides the following capabilities on different platforms:
- LiteOS-M platform: KV stores, file operations, timers, and IoT peripheral control
- LiteOS-A platform: KV stores, timers, and ACE JavaScript APIs
- LiteOS Cortex-M \(Hi3861 platform\): KV stores, file operations, timers, and IoT peripheral control
- LiteOS Cortex-A \(Hi3516 and Hi3518 platforms\): KV stores, timers, and ACE JavaScript APIs
## Directory Structure<a name="section1464106163817"></a>
```
utils/native/lite/ # Root directory of the Utils library
├── file # Implementation of the file interface
├── hals # HAL directory
│ └── file # Header files of the hardware abstraction layer for file operations
├── include # Files of external interfaces provided by the Utils library
utils/native/lite/ # Root directory of the Utils library
├── file # Implementation of the file interface
├── hals # HAL directory
│ └── file # Header files of the hardware abstraction layer for file operations
├── include # Files of external interfaces provided by the Utils library
├── js # ACE JavaScript API directory
│ └── builtin
│ ├── common
│ ├── deviceinfokit # Device information kit
│ ├── filekit # File kit
│ └── kvstorekit # KV store kit
├── kal # KAL directory
│ └── timer # KAL implementation of the timer
├── kv_store # KV store implementation
│ ├── innerkits # Internal KV store interfaces
│ └── src # KV store source file
└── timer_task # Timer implementation
base/iot_hardware # IoT peripheral control
├── kal # KAL directory
│ └── timer # KAL implementation of the timer
├── kv_store # KV store implementation
│ ├── innerkits # Internal KV store interfaces
│ └── src # KV store source file
└── timer_task # Timer implementation
base/iot_hardware # IoT peripheral control
├── frameworks
│ └── wifiiot_lite # Implementation of the IoT peripheral control module
│ └── wifiiot_lite # Implementation of the IoT peripheral control module
├── hals
│ └── wifiiot_lite # HAL interfaces
│ └── wifiiot_lite # HAL interfaces
└── interfaces
└── kits # Interfaces of the IoT peripheral control module
└── kits # Interfaces of the IoT peripheral control module
vendor/hisi/hi3861/hi3861_adapter/hals/iot_hardware # HAL for IoT peripheral control
└── wifiiot_lite # Implementation of the interfaces at the HAL
└── wifiiot_lite # Implementation of the interfaces at the HAL
```
## Constraints<a name="section1718733212019"></a>
......@@ -61,7 +61,7 @@ The Utils library is developed using the C language.
</thead>
<tbody><tr id="row10455841151112"><td class="cellrowborder" valign="top" width="12.659999999999998%" headers="mcps1.2.5.1.1 "><p id="p1945511415113"><a name="p1945511415113"></a><a name="p1945511415113"></a>KV store</p>
</td>
<td class="cellrowborder" valign="top" width="14.78%" headers="mcps1.2.5.1.2 "><p id="p668274310317"><a name="p668274310317"></a><a name="p668274310317"></a>LiteOS-M and LiteOS-A platforms</p>
<td class="cellrowborder" valign="top" width="14.78%" headers="mcps1.2.5.1.2 "><p id="p668274310317"><a name="p668274310317"></a><a name="p668274310317"></a>LiteOS Cortex-M and LiteOS Cortex-A</p>
</td>
<td class="cellrowborder" valign="top" width="32.22%" headers="mcps1.2.5.1.3 "><p id="p193638017460"><a name="p193638017460"></a><a name="p193638017460"></a>Provides KV storage for applications.</p>
</td>
......@@ -70,7 +70,7 @@ The Utils library is developed using the C language.
</tr>
<tr id="row540314384111"><td class="cellrowborder" valign="top" width="12.659999999999998%" headers="mcps1.2.5.1.1 "><p id="p134041038141112"><a name="p134041038141112"></a><a name="p134041038141112"></a>File operation</p>
</td>
<td class="cellrowborder" valign="top" width="14.78%" headers="mcps1.2.5.1.2 "><p id="p19404193811110"><a name="p19404193811110"></a><a name="p19404193811110"></a>LiteOS-M platform</p>
<td class="cellrowborder" valign="top" width="14.78%" headers="mcps1.2.5.1.2 "><p id="p1766172113197"><a name="p1766172113197"></a><a name="p1766172113197"></a>LiteOS Cortex-M</p>
</td>
<td class="cellrowborder" valign="top" width="32.22%" headers="mcps1.2.5.1.3 "><p id="p113646084618"><a name="p113646084618"></a><a name="p113646084618"></a>Provides unified file operation interfaces that can be used on different underlying chip components.</p>
</td>
......@@ -79,7 +79,7 @@ The Utils library is developed using the C language.
</tr>
<tr id="row175322121218"><td class="cellrowborder" valign="top" width="12.659999999999998%" headers="mcps1.2.5.1.1 "><p id="p1053219131219"><a name="p1053219131219"></a><a name="p1053219131219"></a>Timer</p>
</td>
<td class="cellrowborder" valign="top" width="14.78%" headers="mcps1.2.5.1.2 "><p id="p1912957139"><a name="p1912957139"></a><a name="p1912957139"></a>LiteOS-M and LiteOS-A platforms</p>
<td class="cellrowborder" valign="top" width="14.78%" headers="mcps1.2.5.1.2 "><p id="p5406226171912"><a name="p5406226171912"></a><a name="p5406226171912"></a>LiteOS Cortex-M and LiteOS Cortex-A</p>
</td>
<td class="cellrowborder" valign="top" width="32.22%" headers="mcps1.2.5.1.3 "><p id="p15364170194610"><a name="p15364170194610"></a><a name="p15364170194610"></a>Provides unified timer operation interfaces that can be used on different underlying chip components.</p>
</td>
......@@ -88,7 +88,7 @@ The Utils library is developed using the C language.
</tr>
<tr id="row1821629675"><td class="cellrowborder" valign="top" width="12.659999999999998%" headers="mcps1.2.5.1.1 "><p id="p198212291879"><a name="p198212291879"></a><a name="p198212291879"></a>IoT peripheral control</p>
</td>
<td class="cellrowborder" valign="top" width="14.78%" headers="mcps1.2.5.1.2 "><p id="p13827290715"><a name="p13827290715"></a><a name="p13827290715"></a>LiteOS-M platform</p>
<td class="cellrowborder" valign="top" width="14.78%" headers="mcps1.2.5.1.2 "><p id="p4214123191912"><a name="p4214123191912"></a><a name="p4214123191912"></a>LiteOS Cortex-M</p>
</td>
<td class="cellrowborder" valign="top" width="32.22%" headers="mcps1.2.5.1.3 "><p id="p4822295710"><a name="p4822295710"></a><a name="p4822295710"></a>Provides the capability of performing operations for peripherals.</p>
</td>
......@@ -101,12 +101,12 @@ The Utils library is developed using the C language.
- **KV store**
Obtaining an interface
```
Obtaining an interface
char key1[] = "rw.sys.version";
char value1[32] = {0};
int ret = UtilsGetValue(key1, value1, 32);
Setting the interface
char key14[] = "key_14";
ret = UtilsSetValue(key14, defValue);
......@@ -121,10 +121,12 @@ The Utils library is developed using the C language.
printf("file handle = %d\n", fd);
int ret = UtilsFileWrite(fd, def, strlen(def));
printf("write ret = %d\n", ret);
// stat
int fileLen = 0;
ret = UtilsFileStat(fileName, &fileLen);
printf("file size = %d\n", fileLen);
// seek
int fd1 = UtilsFileOpen(fileName, O_RDWR_FS, 0);
ret = UtilsFileSeek(fd1, 5, SEEK_SET_FS);
......@@ -133,6 +135,7 @@ The Utils library is developed using the C language.
int readLen = UtilsFileRead(fd1, buf, 32);
ret = UtilsFileClose(fd1);
printf("read len = %d : buf = %s\n", readLen, buf);
// delete
ret = UtilsFileDelete(fileName);
printf("delete ret = %d\n", ret);
......
Markdown is supported
0% 或 .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑！
想要评论请 注册 或