"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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《Quectel-Android-RIL-Driver-User-Guide-V2.0.pdf》是移远官方发布的驱动移植指南，用于帮助开发人员在Android平台上移植移远的RIL驱动。该指南的版本号为2.0，发布日期为2021年4月19日。
这份指南旨在提供及时全面的服务给客户。如果需要任何帮助，可以联系移远无线解决方案有限公司总部：中国上海市闵行区田林路1016号上海商业园三期B区5号楼，电话：86 21 5108 6236，邮箱：info@quectel.com。也可以联系当地的移远办事处，了解更多信息，请访问移远的支持销售网页：http://www.quectel.com/support/sales.htm。如有技术支持或报告文档错误的需求，请访问对应的网页。
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
1 Introduction .......................................................................................................................................... 8
1.1. Applicable Modules ...................................................................................................................... 8
2 Overview of Android RIL Driver ....................................................................................................... 10
2.1. Directory Structure ..................................................................................................................... 10
2.2. Supported Functions .................................................................................................................. 11
2.3. Supported Android Versions ...................................................................................................... 11
2.4. Supported IRadio Versions ........................................................................................................ 12
3 RIL Integration .................................................................................................................................... 13
3.1. Android RIL Architecture ............................................................................................................ 13
3.2. PPP Configuration in Linux Kernel ............................................................................................ 14
3.3. USB Driver Integration in Linux Kernel ...................................................................................... 14
3.4. RIL Driver Integration by Library ................................................................................................ 14
3.5. System Configuration ................................................................................................................. 15
3.5.1. Configure Service ril-daemon .......................................................................................... 15
3.5.1.1. Modules Accessed via USB/PCIe Interface .......................................................... 16
3.5.1.2. Modules Accessed via UART Interface ................................................................. 16
3.5.2. Modify rild.c (for Android 4.x–7.x) .................................................................................... 17
3.5.3. Add HIDL Description (for Android 8.x–11.x) ................................................................... 17
4 SELinux Configuration ...................................................................................................................... 19
4.1. Modify Service ril-daemon Configuration ................................................................................... 19
4.2. Uncomment the switchUser() Function...................................................................................... 19
4.3. Configure SELinux Rule for RIL ................................................................................................. 19
5 Debugging Methods .......................................................................................................................... 21
5.1. Catch Logs Automatically (Recommended) .............................................................................. 21
5.2. Catch Logs Manually ................................................................................................................. 21
5.3. Common Log Tags ..................................................................................................................... 22
6 FAQs .................................................................................................................................................... 23
6.1. How to Set the APN ................................................................................................................... 23
6.2. Why Quectel RIL Driver Does Not Work .................................................................................... 24
6.3. Why Phone Process Does Not Work ......................................................................................... 25
7 Appendix A References ..................................................................................................................... 26
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