玩转OpenHarmony智能家居：如何实现树莓派“碰一碰”设备控制 精华

int main(int argc, char **argv) {
    uint8_t buff[255];
    uint8_t uid[MIFARE_UID_MAX_LENGTH];
    int32_t uid_len = 0;
    PN532 pn532;
    PN532_I2C_Init(&pn532);
    if (PN532_GetFirmwareVersion(&pn532, buff) == PN532_STATUS_ERROR) {
        return -1;
    }
    PN532_SamConfiguration(&pn532);
    while (1) {
        while (1) {
            // 判断NFC模块是否靠近
            if (PN532_ReadPassiveTarget(&pn532, uid, PN532_MIFARE_ISO14443A, 1000) != PN532_STATUS_ERROR) {
                break;
            }
            usleep(100);
        }

        HILOGI("开始调起应用\r\n");
        pthread_t id1;
        int ret = pthread_create(&id1, NULL, (void *)mythread1, NULL);
        if (ret) {
            HILOGE("创建线程失败\r\n");
        }

        sleep(4);
    }
}
/*
 *拉起设备控制应用的线程
*/
void *mythread1(void) {
    char arg[500] = "aa start -d 1 -a com.huawei.ohos_car_controller.default -b ohos.samples.jshelloworld";
    system(arg);
    return NULL;
}

import led_controller from '@ohos.led_controller';
export default {
    onShow() {
        this.tcpConnect();
    },
    onDestroy() {
        this.tcpDistroy();
    },
    tcpConnect() {
        let promise_connect = led_controller.Connect();
        promise_connect.then((results) => {
            setTimeout(this.changeText(), 9000);
        }).catch(err => {
            console.log('[led Controller]' + err)
        })
    },
    tcpSend(message) {
        let promise_send = led_controller.Send({
            data: message
        })
        promise_send.then((results) => {
            if (results.send_status == 1) {
                console.log("[led Controller] send success")
            }
        }).catch(err => {
            console.log("[led Controller]" + err)
        })
    },
    tcpDistroy() {
        let promise_disconnect = led_controller.Close()
        promise_disconnect.then((results) => {
            if (results.close_status == 1) {
                ConnectionStatus = 0
                prompt.showToast({
                    message: "网络断开",
                });
            }
        }).catch(err => {
            console.log("[led Controller]" + err)
        })
    },
    ledOpen() {
       this.tcpSend("1")
    },
    changeText() {
        prompt.showToast({
            message: "配网成功",
        });
    },
    ledClose() {
        this.tcpSend("0")
    }
}