Firmware problem on A7608-E

[emil151997]

Hello!

I have two Lilygo A7608 boards. And there is a problem with connection (on one of them) - it is very unstable and reconnect often, while the other works much much better.

Normal board:

AT+SIMCOMATI
Manufacturer: INCORPORATED
Model: A7608E-H
Revision: A50C4B07A7600M7
A7600M7_B07V01_220429
QCN:
IMEI: 860371050882459
MEID:
+GCAP: +CGSM,+FCLASS,+DS
DeviceInfo:
OK

Problem board:

AT+SIMCOMATI
Manufacturer: INCORPORATED
Model: A7608E-H
Revision: A50C4B08A7600M7
A7600M7_B08V02_220929
QCN:
IMEI: 861513060819158
MEID:
+GCAP: +CGSM,+FCLASS,+DS
DeviceInfo:
OK

So, it looks like the more recent firmware work much worse. So, can i get the most actual and non-problem firmware ?

[lewisxhe]

Judging from the return, the problematic version is in the lead (B08), and the normal version is in (B07), right?

[lewisxhe]

At present, it seems that the GPS positioning coordinates before the B11 version are wrong. You can try to update to the B11 version for testing. https://drive.google.com/file/d/1IfNkPfQmfG3oqbXEZl0YD_9qgLsN4e_D/view?usp=sharing

[emil151997]

To be honest, i found recent firmware (B11) in other issue. Bui it didn't help. So, it looks like the problem with hardware

[lewisxhe]

What is the problem? Can you share it?

[github-actions[bot]]

This issue is stale because it has been open for 30 days with no activity.

[emil151997]

@lewisxhe Sorry for the late answer, so the problem is, that controller after some time i start have problem with HTTP requests. error on HTTPAction commands. I have about 10 boards and all have strange problems - some of them lost connection, some have this 706 error. Can it be related to the hardware version of the board "XY--A7608 2022-7-18 V1.2" ?

My application logic:

1. Modem hardware startup `pinMode(MODEM_PWR_PIN, OUTPUT); pinMode(MODEM_RST_PIN, OUTPUT);

   digitalWrite(MODEM_RST_PIN, HIGH); delay(1000);

   digitalWrite(MODEM_PWR_PIN, LOW); delay(100);

   digitalWrite(MODEM_RST_PIN, HIGH); delay(1000); digitalWrite(MODEM_RST_PIN, LOW);

   digitalWrite(MODEM_PWR_PIN, LOW); delay(100); digitalWrite(MODEM_PWR_PIN, HIGH); delay(1000); digitalWrite(MODEM_PWR_PIN, LOW); delay(1000);

   Serial1.begin(MODEM_UART_BAUD, SERIAL_8N1, MODEM_RX_PIN, MODEM_TX_PIN); delay(1000);`

2. AT_CMD_INIT: 2.1 AT 2.2 ATE0 2.3 AT+CREG 2.4 AT+CEREG/AT+CGREG 2.5 If i have 3g or 2g (not LTE) - activate PDP Context with AT+CGAUTH, AT+CGDCONT, AT+CGACT commands
3. Start Main Application - repeatedly HTTP POST/Get requests 3.1 If i have problems with http request, i reset my controller with ESP.restart() and go to step 1.

After some day of researching, i found, that it's bad to powercycle modem every time and its better to use AT+CFUN=0 + AT+CFUN=1 commands, according to this document Notes on the Operation of SIMCom M2M Modules Powered On and Down for Search Networks_V1.00.pdf

So, what i am doing wrong, or maybe its a hardware error ?

[github-actions[bot]]

This issue is stale because it has been open for 30 days with no activity.

[github-actions[bot]]

This issue was closed because it has been inactive for 14 days since being marked as stale.