OpenHarmony开发13

OpenHarmony开发13

1. 安装realterm

2. 在下载链接，在不接这个USB硬件的情况下，安装此驱动

3. 重启电脑，可以在端口中看到这个设备，说明安装成功

   

4. 拔下USB，用电源跳线连接3.3v

   

5. 插上usb，打开realterm

   

6. 

   按照如图配置，切换到send界面，输入123或者abc之类的，之后选择发送acsII，可以正确在上面显示

7. 新建一个txt文件，录入

   12
   34
   56
   
   

   

8. 选择文件录入，如图配置

   

9. 使用winHex配置16进制文件，大小为16byte

   

10. 如图配置，让数据间隔一秒发送

    

11. 将usb的tx和gnd分别与hispark板子的rx和gnd连接

    

    

12. 测试运行，并且修改hello_world的部分代码，让我们能成功按照16进制输出

#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include "ohos_init.h"
#include "cmsis_os2.h"

//#include "wifiiot_errno.h"
//#include "wifiiot_gpio.h"
//#include "wifiiot_gpio_ex.h"
//#include "wifiiot_adc.h"
//#include "wifiiot_uart.h"
#include "iot_errno.h"
#include "iot_gpio.h"
#include "iot_uart.h"

#define UART_TASK_STACK_SIZE 1024 * 8
#define UART_TASK_PRIO 25
#define UART_BUFF_SIZE 1000
#define WIFI_IOT_UART_IDX_1 1

static const char *data = "Hello, Hispark!\r\n";

static void UART_Task(void)
{
    uint8_t uart_buff[UART_BUFF_SIZE] = {0};
    uint8_t *uart_buff_ptr = uart_buff;
    uint32_t ret;
	
    //WifiIotUartAttribute uart_attr = {
	IotUartAttribute uart_attr = {

        //baud_rate: 9600
        .baudRate = 9600,

        //data_bits: 8bits
        .dataBits = 8,
        .stopBits = 1,
        .parity = 0,
    };

    //Initialize uart driver
	//ret = IoTUartInit(WIFI_IOT_UART_IDX_1, &uart_attr, NULL);
	ret = IoTUartInit(WIFI_IOT_UART_IDX_1, &uart_attr);
    if (ret != IOT_SUCCESS)
    {
        printf("Failed to init uart! Err code = %d\n", ret);
        return;
    }
    printf("UART Test Start\n");
    while (1)
    {
        printf("=======================================\r\n");
        printf("*************UART_example**************\r\n");
        printf("=======================================\r\n");

        //通过串口1发送数据
        IoTUartWrite(WIFI_IOT_UART_IDX_1, (unsigned char *)data, strlen(data));

        //通过串口1接收数据
        IoTUartRead(WIFI_IOT_UART_IDX_1, uart_buff_ptr, UART_BUFF_SIZE);
        int length = strlen(uart_buff_ptr);
        printf("Uart read data:\n");
        for(int i=0;i<length;i++){
            printf("%.2X ",uart_buff_ptr[i]);
        }
        printf("\n");
        //printf("Uart1 read data:%x", uart_buff_ptr);
        usleep(500000);
    }
}
void HelloWorld(void)
{
    osThreadAttr_t attr;

    attr.name = "UART_Task";
    attr.attr_bits = 0U;
    attr.cb_mem = NULL;
    attr.cb_size = 0U;
    attr.stack_mem = NULL;
    attr.stack_size = UART_TASK_STACK_SIZE;
    attr.priority = UART_TASK_PRIO;

    if (osThreadNew((osThreadFunc_t)UART_Task, NULL, &attr) == NULL)
    {
        printf("[ADCExample] Falied to create UART_Task!\n");
    }
}
//SYS_RUN(HelloWorld);
APP_FEATURE_INIT(HelloWorld);