Cellular Modem Information » Qualcomm Linux Modems by Quectel & Co

h1. diag_mdlog

This is a small proprietary Qualcomm program which can store DIAG logs on the filesystem.

It features the following @--help@ output:

<pre>

 Usage for diag_mdlog:

-f, --filemsm:   mask file name for MSM

-m, --filemdm:   mask file name for MDM

-l, --filelist:  name of file containing list of mask files

-o, --output:    output directory name

-p, --peripheral:        bit mask for the peripherals interested

-s, --size:      maximum file size in MB

-w, --wait:      waiting for directory

-n, --number:    maximum file number

-k, --kill:      kill existing instance of diag_mdlog

-c  --cleanmask:         Send mask cleanup to modem at exit

-d  --disablecon:        Disable console messages

-e  --enablelock:        Run using wake lock to keep APPS processor on

-b  --nonrealtime:       Have peripherals buffer data and send data in non-real-time

-r  --renamefiles:       Rename dir/file names to time when closed

-a  --hdlcdisable:       Disbale hdlc encoding

-h, --help:      usage help

e.g. diag_mdlog -f <mask_file name> -o <output dir> -s <size in bytes> -c

</pre>

h2. mask files

It works using so-called _mask files_ which contain the raw byte sequences to be sent to @/dev/diag@ to enable certain log masks.  The defailed format is TBD.

As an alternative to mask files, there s the filelist_ concept, whcih is a text file containing a list of mask files.

h2. --wait

This waits for the specified directory to become available/writable before proceeding.  Useful in case you wait for mountin an SD card or the like.

h2. --cleanmask

This clears the debug mask at the time of a clean shutdown of the process

h2. --renamefiles

Renames the files when they are closed.  Filenames will be based on timestamps in a format of @/dir/diag_log_%Y%m%d_%H%M%S.qmdl@ where @dir@ corresponds to the --outputdir option given.