peremen
commented
10 months ago It is hard to maintain the device companion app:
- Needs to support and test on each baseband type/OEM due to customizations and different SoC kernel baseline version
- Qualcomm has at least 9 methods to open
/dev/diagdevice node to get the DIAG data (also see this) - Recent Samsung Exynos modem locks on-device DM access when the device is rooted (according to some other sources), although not applied on Pixel devices
- For all other baseband I don't have enough resource to look into it
QCSuper uses companion app based design though, but I am not going to use that design due to maintenance problem (see #29).
SCAT itself is not designed with any post-processing other than GSMTAP wrapping and printing packet information in mind.
i noticed that in the previous discussion, pixel series are pretty hard to expose their diag port to the host. So I want running some RRC analysis script in an on-device manner (using turmux). But the problem is there is no such serial or usb devices available for me to connect to within an android device. I am wondering if there is one way we could directly fetch those lower layer packets (or logs). One thing i have found pretty close to what i am looking for is diag_revealer by mobileinsight apps. But i am rookie in android development. Will it be a good idea to combine diag_revealer with scat?