1. <err> codes
| 0 | Operation succeeded |
| 1 | Alerting state(reserved) |
| 2 | Unknown error |
| 3 | Busy |
| 4 | Peer closed |
| 5 | Operation timeout |
| 6 | Transfer failed |
| 7 | Memory error |
| 8 | Invalid parameter |
| 9 | Network error |
| 10 | Open session error |
| 11 | State error |
| 12 | Create socket error |
| 13 | Get DNS error |
| 14 | Connect socket error |
| 15 | Handshake error |
| 16 | Close socket error |
| 17 | Nonet |
| 18 | Send data timeout |
| 19 | Not set certificates |
2. Unsolicited Result Codes
|
+CCHEVENT: <session_id>, RECV EVENT |
In manual receiving mode, when new data of a connection arriving to the module, this unsolicited result code will be reported to MCU. |
|
+CCH_RECV_CLOSED: <session_id>, <err> |
When receive data occurred any error, this unsolicited result code will be reported to MCU. |
| +CCH_PEER_CLOSED: <session_id> | The connection is closed by the server. |
WiFi IoT Module
Bluetooth Module
5G/LTE/CAT-M1/NB-IoT
