润和满天星系列Pegasus资料汇总

# HiSpark WiFi-IoT 鸿蒙套件样例开发--UART  [HiSpark WiFi-IoT鸿蒙开发套件](https://item.taobao.com/item.htm?id=622343426064&scene=taobao_shop) 首发于HDC 2020，是首批支持HarmonyOS 2.0的开发套件，亦是鸿蒙官方推荐套件，由润和软件HiHope量身打造，已在鸿蒙社区和广大鸿蒙开发者中得到广泛应用。  ## 一、UART API 使用下面的API实现UART读写 #### 鸿蒙UART相关的API接口文件路径 **base/iot_hardware/interfaces/kits/wifiiot_lite/wifiiot_uart.h** 所使用的API接口有： | API | 接口说明 | | ------------------------------------------------------------ | ------------------------ | | unsigned int UartInit(WifiIotUartIdx id, const WifiIotUartAttribute *param, const WifiIotUartExtraAttr *extraAttr); | 初始化，配置一个UART设备 | | int UartRead(WifiIotUartIdx id, unsigned char *data, unsigned int dataLen) | 从UART设备中读取数据 | | int UartWrite(WifiIotUartIdx id, const unsigned char *data, unsigned int dataLen) | 将数据写入UART设备 | #### ## 二、代码分析 首先需要使能UART2 vendor\hisi\hi3861\hi3861\build\config\usr_config.mk 配置CONFIG_UART2_SUPPORT=y 或者调用GPIO相关的API将串口所在的GPIO口设置为UART功能 ```c static void* UartDemo_Task(const char* arg) { unsigned int len = 0; (void)arg; printf("[UartDemo] UartDemo_Task()\n"); GpioInit();//使用GPIO，都需要调用该接口 printf("UART init...\r\n"); //UART参数配置 usr_uart_config(); UartWrite(WIFI_IOT_UART_IDX_2, (unsigned char *)uartWriteBuff, sizeof(uartWriteBuff)); while(1) { //读取UART2的数据 len = UartRead(WIFI_IOT_UART_IDX_2, uartReadBuff, sizeof(uartReadBuff)); if (len > 0) { printf("Uart read data:%s", uartReadBuff); } usleep(100000); } return NULL; } ``` ## 三、如何编译 1. 将此目录下的 `uart_demo.c` 和 `BUILD.gn` 复制到openharmony源码的`applications\sample\wifi-iot\app\iothardware`目录下， 2. 修改openharmony源码的`applications\sample\wifi-iot\app\BUILD.gn`文件，将其中的 `features` 改为： ``` features = [ "iothardware:uart_demo", ] ``` 3.在openharmony源码顶层目录执行：`python build.py wifiiot` ## 四、运行结果 ``` ##### 串口0 RX：ready to OS start sdk ver:Hi3861V100R001C00SPC025 2020-09-03 18:10:00 FileSystem mount ok. wifi init success! [UartDemo] UartDemo_Entry() [UartDemo] UartDemo_Task() UART init... 00 00:00:00 0 132 D 0/HIVIEW: hilog init success. 00 00:00:00 0 132 D 0/HIVIEW: log limit init success. 00 00:00:00 0 132 I 1/SAMGR: Bootstrap core services(count:3). 00 00:00:00 0 132 I 1/SAMGR: Init service:0x4ae958 TaskPool:0xe5238 00 00:00:00 0 132 I 1/SAMGR: Init service:0x4ae964 TaskPool:0xe5258 00 00:00:00 0 132 I 1/SAMGR: Init service:0x4aea8c TaskPool:0xe5278 00 00:00:00 0 8 I 1/SAMGR: Init service 0x4ae964 <time: 0ms> success! 00 00:00:00 0 164 I 1/SAMGR: Init service 0x4ae958 <time: 0ms> success! 00 00:00:00 0 108 D 0/HIVIEW: hiview init success. 00 00:00:00 0 108 I 1/SAMGR: Init service 0x4aea8c <time: 10ms> success! 00 00:00:00 0 108 I 1/SAMGR: Initialized all core system services! 00 00:00:00 0 164 I 1/SAMGR: Bootstrap system and application services(count:0). 00 00:00:00 0 164 I 1/SAMGR: Initialized all system and application services! 00 00:00:00 0 164 I 1/SAMGR: Bootstrap dynamic registered services(count:0). RX：Uart read data:hello RX：Uart read data:12345678 ##### 串口2 RX：hello uart! TX：hello TX：12345678 ``` ![img](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAABXwAAAMWCAYAAABCzk5dAAAgAElEQVR4nOzd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%0ATT0xe3KW4F2+LjdVAvV4X27ta2W8q9o+kbOk6q5KEouILMv6pl5pe9bnyf