HarmonyOS 驱动子系统开发

static void LedTask(void)
{
    //初始化GPIO
    GpioInit();

    //设置GPIO_2的复用功能为普通GPIO
    IoSetFunc(WIFI_IOT_IO_NAME_GPIO_2，WIFI_IOT_IO_FUNC_GPIO_2_GPIO);
    //设置GP1O_2为输出模式
    GpiosetDir(WIFI_IOT_GPIO_IDX_2，WIFI_IOT_GPIO_DIR_OUT);

    while (1)
    {
        //设置GPIO_2输出高电平点亮LED灯
        GpiosetoutputVal(WIFI_IOT_GPIO_IDX_2，1);
        
        //延时1s
        usleep( 1000000);
    
        //设置GPIo_2输出低电平熄灭LED灯T
        GpiosetoutputVal(WIFI_IOT_GPIO_IDX_2，0);
    
        //延时1s
        usleep( 1000000);
    }
}
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static void F1_Pressed(char *arg)
{
    (void)arg;
    Gpiosetoutputval(WIFI_IOT_IO_NAME_GPIO_2，1);
}
static void F2_Pressed(char *arg)
{
    (void)arg;
    Gpiosetoutputval(WIFI_IOT_IO_NAME_GPIO_2，0);
}
static void ButtonExampleEntry(void)
{
    GpioInit();
    //初始化LED灯
    IoSetFunc(wIFI_IOT_IO_NAME_GPIO_2，WIFI_IOT_IO_FUNC_GPIO_2_GPIO);
    GpiosetDir(WIFI_IOT_IO_NAME_GPIO_2， WIFI_IOT_GPIO_DIR_OUT);

    //初始化F1按键，设置为下降沿触发中断
    IosetFunc(WIFI_IOT_IO_NAME_GPIO_11，WIFI_IOT_IO_FUNC_GPIO_11_GPIO);
    GpiosetDir(WIFI_IOT_IO_NAME_GPI0_11，WIFI_IOT_GPIO_DIR_IN);
    IoSetPull(wIFI_IOT_IO_NAME_GPI0_11， WIFI_IOT_IO_PULL_UP);
    GpioRegisterIsrFunc(wIFI_IOT_IO_NAME_GPIO_11，wIFI_IOT_INT_TYPE_EDGE,wIFI_IOT_GPIO_EDGE_FALL_LEVEL_LOw,F1_Pressed，NULL);
    //初始化F2按键，设置为下降沿触发中断
    IoSetFunc(WIFI_IOT_IO_NAME_GPI0_12，             WIFI_IOT_IO_FUNC_GPIO_12_GPIO);
    GpiosetDir(WIFI_IOT_IO_NAME_GPI0_12，WIFI_IOT_GPIO_DIR_IN);
    IosetPull(wIFI_IOT_IO_NAME_GPI0_12，WIFI_IOT_IO_PULL_UP);
    GpioRegisterIsrFunc(WIFI_IOT_IO_NAME_GPIO_12， wIFI_IOT_INT_TYPE_EDGE,WIFI_IOT_GPIO_EDGE_FALL_LEVEL_LOw，F2_Pressed，NULL);
}
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static void PwMTask(void)
{
    unsigned int i;

    //初始化GPIO
    GpioInit();

    //设置GPIO_2引脚复用功能为PwM
    IoSetFunc(WIFI_IOT_IO_NAME_GPIO_2，WIFI_IOT_IO_FUNC_GPIO_2_PlM2_OUT);

    //设置GPIO_2引脚为输出模式
    GpiosetDir(WIFI_IOT_GPIO_IDX_2，WIFI_IOT_GPIO_DIR_OUT);

    //初始化PWM2端口
PwmInit(WIFI_IOT_PWM_PORT_PWM2);
    while (1)
    {
        for (i = e; i < 4080e; i += 100)
        {
            //输出不同占空比的PwM波
            PwmStart(WIFI_IOT_PWM_PORT_PWM2, i, 40000) ;
            usleep( 10);
        }
        i = 0;
    }
}

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/*****获取电压值函数*****/
static float GetVoltage(void)
{
    unsigned int ret;
    unsigned short data;

    ret = AdcRead(WIFI_IOT_ADC_CHANNEL_5,&data，WIFI_IOT_ADC_EQu_MODEL_8,WIFI_IOT_ADC_CUR_BAIS_DEFAULT,0xff);
    if (ret != WIFI_IOT_succEss)
    {
        printf("ADC Read Fail\n");
    }
    return (float)data * 1.8 * 4 / 4096.0;
}
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uint8_t ret;
GpioInit();
//GPIO_o复用为I2C1_SDA
IoSetFunc(wIFI_IOT_IO_NAME_GPIO_0, WIFI_IOT_IO_FUNC_GPIO_0_I2C1_SDA);

//GPIO_1复用为12C1_SCL
IoSetFunc(wIFI_IOT_IO_NAME_GPIO_1， WIFI_IOT_IO_FUNC_GPIO_1_I2c1_SCL);

// baudrate: 40okbps
I2cInit(WIFI_IOT_I2C_IDx_1，400000);

I2csetBaudrate(wIFI_IOT_12C_IDx_1，400000) ;

printf( "I2C Test start\n");

ret = storeText(NDEFFirstPos，(uint8_t *)TEXT);
if (ret != 1)
{
    printf( "NFC Write Data Falied :%d ", ret);
}
ret = storeUrihttp(NDEFLastPos，(uint8_t *)WEB);
if (ret != 1)
{
    printf("NFC Write Data Falied :%d ", ret) ;
}
while (1)
{
    printf("=======================================\r\n");
    printf( ""***********I2C_NFC_example**********\r\n");
    printf("=======================================\r\n");
    printf("Please use the mobile phone with NFC function close to the     development board! \r\n");
    usleep( 1000000) ;
}
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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 = {
        // baud_rate: 9600
        .baudRate = 9600,

        // data_bits : 8bits
        .dataBits = 8,
        .stopBits = 1,
        .parity = 0,
    };
    // Initialize uart driver
    ret = UartInit(WIFI_IOT_UART_IDX_1，&uart_attr，NULL);
    if (ret != WIFI_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
        Uartwrite(WIFI_IOT_UART_IDX_1，(unsigned char *)data，strlen(data));

        //通过串口1接收数据
        UartRead(WIFI_IOT_UART_IDX_1，uart_buff_ptr，UART_BUFF_SIZE);


        printf( "Uart1 read data: %s" , uart_buff_ptr);
        usleep( 1000800) ;
    }
}

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