使用at指令连接aws报错！！！！！！！！

[fst202130609]

cert len:1220
key len:1675
[0;31mE (30068) MQTT_CLIENT: mqtt_message_receive: transport_read() error: errno=0[0m
MQTT ERROR

[0;31mE (30069) MQTT_CLIENT: esp_mqtt_connect: mqtt_message_receive() returned -1[0m
[0;31mE (30074) MQTT_CLIENT: MQTT connect failed[0m
MQTT DISCONNECTED

01.png

[fst202130609]

我已经烧录aws的ca,cert,key这几份文件了，并把这些bin文件根据地址烧录了

023.png

[ESP_Eavo]

请不要重复地提问！！！