"移远Android RIL驱动用户指南V2.0.pdf；驱动移植移远官方资料"

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                                              Android  RIL  Driver  User  Guide 
Android_RIL_Driver_User_Guide                                                                   5  / 27 
 
 
 
Contents 
About the Document ................................................................................................................................... 3 
Contents ....................................................................................................................................................... 5 
Table Index ................................................................................................................................................... 6 
Figure Index ................................................................................................................................................. 7 
Introduction .......................................................................................................................................... 8 
1.  Applicable Modules ...................................................................................................................... 8 
Overview of Android RIL Driver ....................................................................................................... 10 
1.  Directory Structure ..................................................................................................................... 10 
2.  Supported Functions .................................................................................................................. 11 
3.  Supported Android Versions ...................................................................................................... 11 
4.  Supported IRadio Versions ........................................................................................................ 12 
RIL Integration .................................................................................................................................... 13 
1.  Android RIL Architecture ............................................................................................................ 13 
2.  PPP Configuration in Linux Kernel ............................................................................................ 14 
3.  USB Driver Integration in Linux Kernel ...................................................................................... 14 
4.  RIL Driver Integration by Library ................................................................................................ 14 
5.  System Configuration ................................................................................................................. 15 
5.1.  Configure Service ril-daemon .......................................................................................... 15 
5.1.1.  Modules Accessed via USB/PCIe Interface .......................................................... 16 
5.1.2.  Modules Accessed via UART Interface ................................................................. 16 
5.2.  Modify rild.c (for Android 4.x–7.x) .................................................................................... 17 
5.3.  Add HIDL Description (for Android 8.x–11.x) ................................................................... 17 
SELinux Configuration ...................................................................................................................... 19 
1.  Modify Service ril-daemon Configuration ................................................................................... 19 
2.  Uncomment the switchUser() Function...................................................................................... 19 
3.  Configure SELinux Rule for RIL ................................................................................................. 19 
Debugging Methods .......................................................................................................................... 21 
1.  Catch Logs Automatically (Recommended) .............................................................................. 21 
2.  Catch Logs Manually ................................................................................................................. 21 
3.  Common Log Tags ..................................................................................................................... 22 
FAQs .................................................................................................................................................... 23 
1.  How to Set the APN ................................................................................................................... 23 
2.  Why Quectel RIL Driver Does Not Work .................................................................................... 24 
3.  Why Phone Process Does Not Work ......................................................................................... 25 
Appendix A References ..................................................................................................................... 26 