一,模块基本信息
1.官方介绍
SLM770A是美格智能最新推出的一款LTE Cat.4无线通讯模组,最大支持下行速率150Mbps及上行速率50Mbps。同时向下兼容现有的3G和2G网络,以确保即使在偏远地区也可以举行网络通信。
SLM770A模组支持分集接收和MIMO技术,优化数据传输的速度并进步通讯质量。支持NCM/PPP/ECM/TCP/UDP/DTSL/HTTP(S)/FTP/MQTT等多种拨号方式及内置网络协议。集成了UART/I2C/PCM/SPI/SDIO等丰富的硬件接口。广泛应用于工业路由、安防监控、CPE、车载DVR、共享等领域。
2.子端口分析
捏造出来的各个子端口主要用来实现AT命令收发,网络通信,GPS,诊断等功能。
二,驱动移植与RIL适配
1.添加usb串口驱动
1.1 内核配置打开相应宏
代码路径:longan/kernel/linux-4.9/arch/arm64/configs/sun50iw10p1smp_a100_android_defconfig
- #串口驱动
- CONFIG_USB_SERIAL_GENERIC=y
- CONFIG_USB_SERIAL_OPTION=y
- CONFIG_USB_SERIAL_QT2=y
- #RNDIS驱动支持
- CONFIG_MII=y
- CONFIG_USB_USBNET=y
- CONFIG_USB_NET_CDCETHER=y
- CONFIG_USB_NET_RNDIS_HOST=y
复制代码 1.2 修改option驱动,添加模块支持
代码路径:longan/kernel/linux-4.9/drivers/usb/serial/option.c
- diff --git a/longan/kernel/linux-4.9/drivers/usb/serial/option.c b/longan/kernel/linux-4.9/drivers/usb/serial/option.c
- index 7ca999924d..965b6ed3ce 100644
- --- a/longan/kernel/linux-4.9/drivers/usb/serial/option.c
- +++ b/longan/kernel/linux-4.9/drivers/usb/serial/option.c
- @@ -88,6 +88,18 @@ static void option_instat_callback(struct urb *urb);
- #define HUAWEI_PRODUCT_E173S6 0x1C07
- #define HUAWEI_PRODUCT_E261 0x1446
- +//fy add for meig modem supported start.
- +#define MEIG_VENDOR_ID 0x2DEE
- +#define MEIG_PRODUCT_SRM815 0x4D22
- +#define MEIG_PRODUCT_SRM815_ECM 0x4D23
- +#define MEIG_PRODUCT_SLM790 0x4D20
- +#define MEIG_PRODUCT_SLM770 0x4D57
- +#define MEIG_QCM_VENDOR_ID 0x05C6
- +#define MEIG_QCM_PRODUCT_SLM750_SRM815_SLM868 0xF601
- +#define MEIG_PRODUCT_SRM811_RNDIS 0x4D51
- +#define MEIG_PRODUCT_SRM811_NCM 0x4D52
- +//fy add for meig modem supported end.
- +
- #define QUANTA_VENDOR_ID 0x0408
- #define QUANTA_PRODUCT_Q101 0xEA02
- #define QUANTA_PRODUCT_Q111 0xEA03
- @@ -593,6 +605,35 @@ static const struct option_blacklist_info yuga_clm920_ac5_blacklist = {
- static const struct usb_device_id option_ids[] = {
- + //fy add for meig modem supported start.
- + { USB_VENDOR_AND_INTERFACE_INFO(MEIG_VENDOR_ID, 0xff, 0x03, 0x03) }, //3g app
- + { USB_VENDOR_AND_INTERFACE_INFO(MEIG_VENDOR_ID, 0xff, 0x03, 0x13) }, //app
- + { USB_VENDOR_AND_INTERFACE_INFO(MEIG_VENDOR_ID, 0xff, 0x03, 0x01) }, //modem
- + { USB_VENDOR_AND_INTERFACE_INFO(MEIG_VENDOR_ID, 0xff, 0x03, 0x12) }, //at
- + { USB_VENDOR_AND_INTERFACE_INFO(MEIG_VENDOR_ID, 0xff, 0x03, 0x14) }, //gprs
- +
- + { USB_VENDOR_AND_INTERFACE_INFO(MEIG_VENDOR_ID, 0xff, 0x02, 0x03) }, //3g app
- + { USB_VENDOR_AND_INTERFACE_INFO(MEIG_VENDOR_ID, 0xff, 0x02, 0x13) }, //app
- + { USB_VENDOR_AND_INTERFACE_INFO(MEIG_VENDOR_ID, 0xff, 0x02, 0x01) }, //modem
- + { USB_VENDOR_AND_INTERFACE_INFO(MEIG_VENDOR_ID, 0xff, 0x02, 0x12) }, //at
- + { USB_VENDOR_AND_INTERFACE_INFO(MEIG_VENDOR_ID, 0xff, 0x02, 0x14) }, //gprs
- +
- + { USB_DEVICE(MEIG_VENDOR_ID, MEIG_PRODUCT_SRM815),
- + .driver_info = RSVD(4) | RSVD(5) | RSVD(6) | RSVD(7) },
- + { USB_DEVICE(MEIG_VENDOR_ID, MEIG_PRODUCT_SRM815_ECM),
- + .driver_info = RSVD(4) | RSVD(5) | RSVD(6) | RSVD(7)},
- + { USB_DEVICE(MEIG_QCM_VENDOR_ID, MEIG_QCM_PRODUCT_SLM750_SRM815_SLM868),
- + .driver_info = RSVD(4) | RSVD(5) | RSVD(6) | RSVD(7)},
- + { USB_DEVICE(MEIG_VENDOR_ID, MEIG_PRODUCT_SLM790),
- + .driver_info = RSVD(0) | RSVD(5) | RSVD(6) | RSVD(7)},
- + { USB_DEVICE(MEIG_VENDOR_ID, MEIG_PRODUCT_SLM770),
- + .driver_info = RSVD(0) | RSVD(5) | RSVD(6) | RSVD(7)},
- + { USB_DEVICE(MEIG_VENDOR_ID, MEIG_PRODUCT_SRM811_RNDIS),
- + .driver_info = RSVD(0) | RSVD(1) },
- + { USB_DEVICE(MEIG_VENDOR_ID, MEIG_PRODUCT_SRM811_NCM),
- + .driver_info = RSVD(0) | RSVD(1) },
- + //fy add for meig modem supported end.
- +
- { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
- { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
- { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
复制代码 1.3 添加USB装备节点权限
代码路径:android/device/softwinner/ceres-common/ueventd.sun50iw10p1.rc
文件中添加以下配置内容:
- /dev/ttyUSB* 0777 system system
复制代码 1.4 编译更新内核
驱动加载后,插入模块时。dev/目录会生成ttyUSB串口装备:
- console:/ # ls -l dev/ttyUSB*
- crwxrwxrwx 1 system system 188, 0 2025-02-20 13:20 dev/ttyUSB0
- crwxrwxrwx 1 system system 188, 1 2025-02-20 13:20 dev/ttyUSB1
- crwxrwxrwx 1 system system 188, 2 2025-02-20 14:45 dev/ttyUSB2
复制代码 2.添加RIL配置
2.1 驱动包解压
将Meig_Android_Driver_V5.0.7.3.zip解压到Android源码根目录vendor/meig 目录:
SLM770A 4G模块资料下载链接:https://download.csdn.net/download/weixin_45639314/90408097
2.2 在mk文件中添加美格ril配置
代码路径:android/device/softwinner/ceres-b6/ceres_b6.mk
- diff --git a/android/device/softwinner/ceres-b6/ceres_b6.mk b/android/device/softwinner/ceres-b6/ceres_b6.mk
- index 321272978e..8e36d8cd74 100644
- --- a/android/device/softwinner/ceres-b6/ceres_b6.mk
- +++ b/android/device/softwinner/ceres-b6/ceres_b6.mk
- @@ -159,9 +159,9 @@ PRODUCT_PACKAGES += \
- #PRODUCT_PACKAGES += AllwinnerGmsIntegration
- -############################### 3G Dongle Support ###############################
- +############################### 4G Dongle Support ###############################
- # Radio Packages and Configuration Flie
- -$(call inherit-product-if-exists, vendor/aw/public/prebuild/lib/librild/radio_common.mk)
- +$(call inherit-product-if-exists, vendor/meig/meig_radio.mk)
- BUILD_WITH_GOOGLE_APPS := false
- ifeq ($(strip $(BUILD_WITH_GOOGLE_APPS)), true)
复制代码 2.3 添加HIDL配置
代码路径:android/device/softwinner/ceres-b6/configs/manifest.xml
- diff --git a/android/device/softwinner/ceres-b6/configs/manifest.xml b/android/device/softwinner/ceres-b6/configs/manifest.xml
- index fb82972d59..b9c7cb5178 100644
- --- a/android/device/softwinner/ceres-b6/configs/manifest.xml
- +++ b/android/device/softwinner/ceres-b6/configs/manifest.xml
- @@ -25,6 +25,24 @@
- <name>IUsb</name>
- <instance>default</instance>
- </interface>
- + </hal>
- + <hal format="hidl">
- + <name>android.hardware.radio.deprecated</name>
- + <transport>hwbinder</transport>
- + <version>1.0</version>
- + <interface>
- + <name>IOemHook</name>
- + <instance>slot1</instance>
- + </interface>
- + </hal>
- + <hal format="hidl">
- + <name>android.hardware.radio</name>
- + <transport>hwbinder</transport>
- + <version>1.0</version>
- + <interface>
- + <name>IRadio</name>
- + <instance>slot1</instance>
- + </interface>
- </hal>
- <hal format="hidl">
- <name>android.hardware.audio.effect</name>
复制代码 二,调试
1.状态查察
- console:/ # getprop | grep ril
- [gsm.version.ril-impl]: [MEIG_RIL_Android7.x-later-V5.0.7.3]
- [init.svc.vendor.meig-ril]: [running]
- [init.svc.vendor.ril-daemon]: [stopped]
- [ril.datachannel]: [/dev/ttyUSB1]
- [rild.dongle_name]: [SLM770A]
- [rild.libargs]: [-d /dev/ttyUSB2]
- [rild.libpath]: [/vendor/lib/libmeig-ril.so]
- [ro.boottime.vendor.meig-ril]: [5185500126]
- [ro.radio.noawril]: [true]
- [ro.radio.noril]: [false]
- [sys.mgril.unrecverr]: [false]
- [vendor.rild.libargs]: [-d /dev/ttyUSB2]
- [vendor.rild.libpath]: [/vendor/lib/libmeig-ril.so]
复制代码 2.usb串口驱动查抄
- adb root
- adb shell
- dmesg | grep option
复制代码 打印以下信息:
3.查察节点
- console:/ # cat sys/kernel/debug/usb/devices
- T: Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 5 Spd=480 MxCh= 0
- D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
- P: Vendor=2dee ProdID=4d57 Rev= 1.00
- S: Manufacturer=Marvell
- S: Product=Mobile Composite Device Bus
- S: SerialNumber=200806006809080000
- C:* #Ifs= 6 Cfg#= 1 Atr=c0 MxPwr=500mA
- A: FirstIf#= 0 IfCount= 2 Cls=e0(wlcon) Sub=01 Prot=03
- I:* If#= 0 Alt= 0 #EPs= 1 Cls=e0(wlcon) Sub=01 Prot=03 Driver=rndis_host
- E: Ad=87(I) Atr=03(Int.) MxPS= 64 Ivl=4096ms
- I:* If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=rndis_host
- E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
- E: Ad=0c(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
- I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
- E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
- E: Ad=0b(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
- I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
- E: Ad=88(I) Atr=03(Int.) MxPS= 64 Ivl=4096ms
- E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
- E: Ad=0a(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
- I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
- E: Ad=89(I) Atr=03(Int.) MxPS= 64 Ivl=4096ms
- E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
- E: Ad=0f(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
- I:* If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
- E: Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
- E: Ad=0e(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
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