Hi @huydai2004,
1, Following document “AirPrime - RC76xx - AT Command Reference Guide - Rev8.0.pdf”, your command “1,“https://google.com”,443,2,0,1” seems wrong at login and password parameter. Please check it.
2, If you want to make HTTPS connection, you need to import certificate to module. You can refer this log:
09:24:54.150 on 19-Apr-2021> at+cereg? 09:24:57.746 on 19-Apr-2021> 09:24:57.746 on 19-Apr-2021> +CEREG: 2,1,"17E0","960310B",7 09:24:57.746 on 19-Apr-2021> 09:24:57.746 on 19-Apr-2021> OK 09:24:57.746 on 19-Apr-2021> at+kcertstore? 09:25:01.812 on 19-Apr-2021> 09:25:01.827 on 19-Apr-2021> CONNECT 09:25:01.827 on 19-Apr-2021> root_cert,0,1549 09:25:01.827 on 19-Apr-2021> -----BEGIN CERTIFICATE-----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-----END CERTIFICATE----- 09:25:01.828 on 19-Apr-2021> local_cert,0,0 09:25:01.828 on 19-Apr-2021> local_cert,1,0 09:25:01.828 on 19-Apr-2021> local_cert,2,0 09:25:01.828 on 19-Apr-2021> 09:25:01.828 on 19-Apr-2021> OK 09:25:01.828 on 19-Apr-2021> at+kcnxcfg=1,"GPRS","my APN" 09:25:11.412 on 19-Apr-2021> 09:25:11.412 on 19-Apr-2021> OK 09:25:11.412 on 19-Apr-2021> at+khttpcfg=1,"https://google.com",443,2 09:25:47.396 on 19-Apr-2021> 09:25:47.481 on 19-Apr-2021> 09:25:47.481 on 19-Apr-2021> +KHTTPCFG: 1 09:25:47.481 on 19-Apr-2021> 09:25:47.481 on 19-Apr-2021> OK 09:25:47.481 on 19-Apr-2021> 09:25:47.497 on 19-Apr-2021> 09:25:47.497 on 19-Apr-2021> +KCNX_IND: 1,4,1 09:25:47.497 on 19-Apr-2021> 09:25:47.497 on 19-Apr-2021> 09:25:47.497 on 19-Apr-2021> 09:25:47.497 on 19-Apr-2021> +KCNX_IND: 1,1,0 09:25:47.497 on 19-Apr-2021> 09:25:47.497 on 19-Apr-2021> 09:25:49.113 on 19-Apr-2021> 09:25:49.113 on 19-Apr-2021> +KHTTP_IND: 1,1
3, You can import certificate as the same as above log following below steps:
AT+KCERTSTORE=0
<File_data> //You must select all data in this certificate file:www-google-com.pem-2.txt (1.5 KB) then copy, paste into here.
<+++> //Press + key 3 times
Please try this and provide me the result.
Thanks,