CODEWITHSUNDEEP
modulegsmat-commandsim7600
Abdullah bin Amir
Abdullah bin Amir

Reputation: 15

SIMCOM 7600G-Pcie Audio Writing Blocked if Data written when call ends

I just wrote a C# application that waits for a call and picks up the call from the SIMCOM 7600g-Mini pcie module.

I have also connected to the Audio USB Port that is also available when connected, and I am able to read the call audio and write audio to it as well.

However, There seems to be a critical bug where if the call has ended and there was still some bytes being written or if bytes are written after call has ended, the write does get timedout which is expected but once the next call is picked up, the audio reading works but the writing always keeps timing out.

I have tried flushing the buffer but the fix is always replugging in the usb.

It works just fine if no audio is written while the call is ending.

Could this be a hardware fault or am I missing some step that needs to be done?

Upvotes: -1

Views: 88

Answers (1)

Владислав
Владислав

Reputation: 1

Faced with the same problem. It helped to update the modem firmware. Old version: AT+CGMR +CGMR: LE11B08SIM7600M22 New version: AT+CGMR +CGMR: LE11B14SIM7600M22_221022 Flashing Instructions: To update the module's software, you will need the following files:

  1. Drivers

Connecting a modem (or debugging) directly via USB:

for all Windows versions: https://drive.google.com/file/d/18d37YLOOnDrlxSXq2aQwQAMinHPGMLBk/view?usp=sharing

for Linux: https://drive.google.com/file/d/1LqArVeNvR3CpOOMfrEGL999W7W-TxGIg/view?usp=sharing

  1. Utility

Available for download via the link:

https://drive.google.com/file/d/1t4O6gTTZkQGW6CEIo9JCpMjjQwqoZaTL/view?usp=sharing

  1. Module software

Current Software (S2-107EQ / S2-10CYG):

B14_221022 - https://drive.google.com/file/d/10zjUvN5rEJ8viTxraa2jvV1fkjzmAiml/view?usp=sharing

The firmware update process is divided into stages:

  1. Connect the module via USB to the PC

  2. Download and unpack the archives using the links above

  3. Install the drivers

  4. Download and install QPST:

https://drive.google.com/file/d/1K5DxiYI6Ah3ygFKLkLt_xe-94qXrWEeB/view?usp=sharing

  1. Turn on the module (apply power and clamp the PWRKEY to the ground)

  2. Make sure that there are no unidentified devices in the Device Manager.

  3. Move the unpacked firmware folder and the utility folder to the root of any disk.

  4. Open the utility; Status field=grey

7.1. In the utility, click "Load" and select "MDM9x07(SIM7500&SIM7600 Series)"

7.2. In the window that opens, select the path to the firmware folder and after the utility detects all the files that make up the firmware (the lines will turn green), close the window.

7.3. Click "Start"

  1. The firmware process will start (Status=blue field), you can control the process by watching the progress bar in the utility. If the process stops by 1-2% during the update, check the Task Manager for unknown devices during the update (use the driver above)

  2. Upon completion, the green label "Update Success!" will appear (Status field=green).

  3. Press "Stop" in the top menu of the utility and turn off the module CORRECTLY (via PWRKEY or 'AT+CPOWD=1').

Upvotes: 0

Related Questions