When I try AT+CBC=? it works as it should but when I try AT+CBC, I immediately get an ERROR response.
AT+CBC
<
ERROR
<
Dear Manaury,
Thanks for your inquiry in Quectel forum.
Please check the following test log in my side, the command AT+CBC works normally. So please check the firmware version that you used now. If it is different, it is better to send email to support@quectel.com to get the latest firmware and upgrade tool, you can flash firmware to have a try again. Thanks!
Thanks Kyson.
I have version
[2020-04-24 03:16:40.477] >AT+GMR
[2020-04-24 03:16:40.477] >
[2020-04-24 03:16:40.477] <
[2020-04-24 03:16:40.477] EG25GGBR07A07M2G
[2020-04-24 03:16:40.477]
[2020-04-24 03:16:40.477] OK
[2020-04-24 03:16:40.477] <
If that, it should have no any issues. How about your hardware design, whether you have connect design of ADC0 or ADC1 pin, please double check it. Thanks!
ADC0 and ADC1 are not connected.
Dear Sir,
I have test it use the same firmware version with you, it have no any issue. Please check the following test log. Thanks!
I use EG25 TEA+UMTS EVB. Please check your test method and environment. Thanks!
Thank for helping Kyson,
Here’s a log from the script I run. The script is able to connect and send data to the server perfectly, the only issue I have is that AT+CBC doesn’t want to work.
[2020-04-26 15:28:03.514] AT:[0]>ATE0
[2020-04-26 15:28:03.514] >
[2020-04-26 15:28:03.514] AT:<
[2020-04-26 15:28:03.514] ATE0
[2020-04-26 15:28:03.514] OK
[2020-04-26 15:28:03.514] < 10
[2020-04-26 15:28:03.514] AT:[1]>AT+CMEE=2
[2020-04-26 15:28:03.514] >
[2020-04-26 15:28:03.514] AT:<
[2020-04-26 15:28:03.514] OK
[2020-04-26 15:28:03.514] < 6
[2020-04-26 15:28:03.514] AT:[2]>AT+CBC
[2020-04-26 15:28:03.514] >
[2020-04-26 15:28:03.782] AT:<!
[2020-04-26 15:28:03.782] ERROR
[2020-04-26 15:28:03.782] !<
[2020-04-26 15:28:03.782] AT:[9]>AT+CPIN?
[2020-04-26 15:28:03.782] >
[2020-04-26 15:28:03.798] AT:<
[2020-04-26 15:28:03.798] +CPIN: READY
[2020-04-26 15:28:03.798]
[2020-04-26 15:28:03.798] OK
[2020-04-26 15:28:03.798] < 22
[2020-04-26 15:28:03.877] AT:[10]>AT&D1
[2020-04-26 15:28:03.877] >
[2020-04-26 15:28:03.877] AT:<
[2020-04-26 15:28:03.877] OK
[2020-04-26 15:28:03.877] < 6
[2020-04-26 15:28:03.877] AT:[11]>AT+GMR
[2020-04-26 15:28:03.877] >
[2020-04-26 15:28:03.877] AT:<
[2020-04-26 15:28:03.877] EG25GGBR07A07M2G
[2020-04-26 15:28:03.877]
[2020-04-26 15:28:03.877] OK
[2020-04-26 15:28:03.877] < 26
If that, it is better to check it with multi meter to confirm whether the pin have any abnormal. Thanks!