Chao at 08:56, 8 July 2020

2020-07-08T08:56:48Z

New page

=== AT Commands ===
* Commands list - http://www.simcomm2m.com/UploadFile/TechnicalFile/SIM7020%20Series_AT%20Command%20Manual_V1.00.pdf
* Coap examples see at commands manual end of the page
=== Testing Record for Reference ===
==== Basic ====
* AT+CPIN? // check if sim card avaialble
* AT+CSQ // +CSQ: 5,0 // correct in 0-98, incorrect 99
* AT+CREG? //+CREG: 0,6 // 6 indicate the stats registered, please refer to datasheet
* AT+COPS? // +COPS: 0,2,"46000",9 // last word 9 indicate nbiot network registered
<netact>
0 User-specified GSM access technology
8 User-specified LTE M1 A GB access technology
9 User-specified LTE NB S1 access technology
* AT+CGATT? // +CGATT: 1 // network attached status

{| class="wikitable sortable"
|-
! Basic !! Test: e.g. AT+IPR=? !! Read, e.g. AT+IPR? !! Write, e.g. AT+IPR=9600
|-
| Baudrate - AT+IPR || - ||
* +IPR: 9600
* OK
|| -
|-
| AT+CBAND ||
* +CBAND: (1,3,5,8,20,28)
* OK
|| -|| -
|-
| AT+CENG ||
* +CENG: (0-1)
* OK
||
* +CENG: 3738,2,402,"0D1C1E41",-75,-5,-70,14,8,"1D26",0,
* +CENG: 3738,2,146,-89
* +CENG: 3738,2,1,-88
* OK
|| -
|-
| AT+GSV || || ||
* SIMCOM_Ltd
* SIM7020E
* Revision:1752B03SIM7020E
* OK
|}

==== Ping, DNS ====
{| class="wikitable sortable"
|-
! Commands !! Feedback
|-
| AT+CIPPING="192.168.1.1", 4, 32, 100 ||
* OK
* +CIPPING: 1,192.168.1.1,7,250
* +CIPPING: 2,192.168.1.1,8,250
* +CIPPING: 3,192.168.1.1,3,250
* +CIPPING: 4,192.168.1.1,3,250
|-
| AT+CDNSGIP=www.baidu.com ||
* +CDNSGIP: 111.13.100.92
* OK
|-
| AT+CIPPING="111.13.100.92",4,32,100 ||
* OK
* +CIPPING: 1,111.13.100.92,4,54
* +CIPPING: 2,111.13.100.92,3,54
* +CIPPING: 3,111.13.100.92,3,54
* +CIPPING: 4,111.13.100.92,3,54
|}

==== TCPIP ====

* AT+CSOC=1,1,1
* +CSOC: 0
* OK

* AT+CGACT?
+CGACT: 1,1

* AT+CGACT=?
* +CGACT: (0-1)
* OK

* AT+CGACT?
* +CGACT: 1,1
* +CGACT: 2,0
* OK

* AT+CSGACT=1,1,"3GNET"
* OK
* +CSGACT: 2,0

==== MQTT ====
{| class="wikitable sortable"
|-
! Commands List !! Return !! Note
|-
| AT+CMQNEW? ||
* +CMQNEW: 0,0,null
* +CMQNEW: 1,0,null
* +CMQNEW: 2,0,null
* +CMQNEW: 3,0,null
* +CMQNEW: 4,0,null
* OK
|| Check connections
|-
| AT+CMQNEW="167.88.114.101","1883",6000,32,1 ||
* +CMQNEW: 0
* OK
|| make connection, our server iot.electrodragon.com
|-
| AT+CMQCON=0,3,"client_id",10,0,0 || OK || connect to "client_id"?
|-
| AT+CMQSUB=0,"client_id",0 || OK || subscribe to "client_id"
|-
| AT+CMQPUB=0,"client_id",0,0,0,5,"HE" || ERROR || publish to "client_id" but 5 is error length for "HE" data buff
|-
| AT+CMQPUB=0,"client_id",0,0,0,2,"HE" ||
* OK
*
* +CMQPUB: 0, "client_id?��鵋�� €
* �滃��", 0, 0, 0, 0, ""
|| seems sent properly
|-
| AT+CMQNEW? ||
* +CMQNEW: 0,1,167.88.114.101
* +CMQNEW: 1,0,null
* +CMQNEW: 2,0,null
* +CMQNEW: 3,0,null
* +CMQNEW: 4,0,null
*
* OK
|| check connections
|}

[[category: SIM7020]]
[[category: AT]]

SIM7020 AT - Revision history

Chao at 08:56, 8 July 2020