void MQTT_Connect(char *username, char *password)

{

? ? MQTTPacket_connectData data = MQTTPacket_connectData_initializer;

? ? u32 len;

? ? u8 buf[200];

? ? data.clientID.cstring = "ch32v307";

? ? data.keepAliveInterval = 2000;

? ? data.cleansession = 1;

? ? data.username.cstring = username;

? ? data.password.cstring = password;

? ? len = MQTTSerialize_connect(buf,sizeof(buf),&data);

? ? Transport_SendPacket(buf,len);

}

您好，單位是秒