ESP8266 Developer Zone

Re: How to fix the UART message -"chg_A3:0" and "chg_A3:-180" in SDK v1.4.1_pre5_15_10_27

2015-12-18T15:10:54+08:00

Hi,

Please have a try with our latest ESP8266_NONOS_SDK_V1.5.0.

If it still outputs so often, please provide the UART logs for debugging.

Thanks for your interest in ESP8266 !

Statistics: Posted by ESP_Faye — Fri Dec 18, 2015 3:10 pm

Re: How to fix the UART message -"chg_A3:0" and "chg_A3:-180" in SDK v1.4.1_pre5_15_10_27

2015-12-17T17:27:49+08:00

But why is it doing so often? Won't some kind of calibration stop it doing that? Or is it normal and just being printed out unnecesarily (i.e. debug log not commented out).

Statistics: Posted by Mario_ — Thu Dec 17, 2015 5:27 pm

Re: How to fix the UART message -"chg_A3:0" and "chg_A3:-180" in SDK v1.4.1_pre5_15_10_27

2015-12-17T11:12:03+08:00

Hi,

"chg_A3:0" and "chg_A3:-180" means that ESP8266 is adjusting its frequency offset, it is not a problem, you can just ignore the logs.

Thanks for your interest in ESP8266 !

Statistics: Posted by ESP_Faye — Thu Dec 17, 2015 11:12 am

Re: How to fix the UART message -"chg_A3:0" and "chg_A3:-180" in SDK v1.4.1_pre5_15_10_27

2015-12-15T00:56:41+08:00

I am seeing these messages.
I see them with
esp_iot_sdk_v1.4.1_pre5_15_10_27 and pre7
and esp_iot_sdk_v1.5.0_15_11_27

Do you know what theses codes mean and how do you disable them.
Thanks

Statistics: Posted by Richard — Tue Dec 15, 2015 12:56 am

Re: How to fix the UART message -"chg_A3:0" and "chg_A3:-180" in SDK v1.4.1_pre5_15_10_27

2015-10-30T17:09:37+08:00

Hi,

Could you please print the version information of the SDK to ensure that you are using the SDK_v1.4.1 patch ?

Code:

    os_printf("SDK version:%s\n", system_get_sdk_version());

Thanks for your interest in ESP8266 !

Statistics: Posted by ESP_Faye — Fri Oct 30, 2015 5:09 pm

Re: How to fix the UART message -"chg_A3:0" and "chg_A3:-180" in SDK v1.4.1_pre5_15_10_27

2015-10-30T10:38:35+08:00

Hi,

Yes, ESP8266 is work will, and statsion(like mobile phone) can connect to it.

Code:

mode : sta(12:34:56:78:90:ab) + softAP(16:34:56:78:90:ab)
add if0
add if1
dhcp server start:(ip:192.168.1.1,mask:255.255.255.0,gw:192.168.1.1)
bcn 100
chg_A3:-180
chg_A3:0
add 1
aid 1
station: 38:aa:3c:e7:73:4d join, AID = 1

But before station connection, the message "chg_A3:-180" will always show up. Could I disable or remove this UART message ?
(Thank you!)

Statistics: Posted by pcbass — Fri Oct 30, 2015 10:38 am

Re: How to fix the UART message -"chg_A3:0" and "chg_A3:-180" in SDK v1.4.1_pre5_15_10_27

2015-10-30T10:14:53+08:00

Hi,

Regardless of the logs, can ESP8266 work well ?

In your case, can other stations connect to ESP8266 soft-AP ?

Statistics: Posted by ESP_Faye — Fri Oct 30, 2015 10:14 am

How to fix the UART message -"chg_A3:0" and "chg_A3:-180" in SDK v1.4.1_pre5_15_10_27

2015-10-29T17:56:40+08:00

Hi,

When I use SDK v1.4.0_15_09_18, I found that UART interface will occurred below message.

Code:

chg_A3:0
chg_A3:-180
chg_A3:0
chg_A3:-180
chg_A3:0
chg_A3:-180
chg_A3:0
chg_A3:-180
chg_A3:0
chg_A3:-180

I check the forum that found someone has the same issue (http://bbs.espressif.com/viewtopic.php?f=7&t=1257&p=4191&hilit=chg_A3#p4191, the offical's reply only mentions that asking user to user new SDK v1.4.1_pre5_15_10_27. But I use this new SDK and still have the same UART message.

Could anyone know how to remove this UART message ?

Statistics: Posted by pcbass — Thu Oct 29, 2015 5:56 pm