rk3288 android 7.1 串口使用
16lz
2021-01-24
DTS配置
文件相关定义配置
kernel/arch/arm/boot/dts/rk3288.dtsi
aliases { serial0 = &uart0; serial1 = &uart1; serial2 = &uart2; serial3 = &uart3; serial4 = &uart4; };uart3 { uart3_xfer: uart3-xfer { rockchip,pins = <7 7 RK_FUNC_1 &pcfg_pull_up>, <7 8 RK_FUNC_1 &pcfg_pull_none>; }; uart3_cts: uart3-cts { rockchip,pins = <7 9 RK_FUNC_1 &pcfg_pull_up>; }; uart3_rts: uart3-rts { rockchip,pins = <7 10 RK_FUNC_1 &pcfg_pull_none>; };uart3: [email protected] { compatible = "rockchip,rk3288-uart", "snps,dw-apb-uart"; reg = <0x0 0xff1b0000 0x0 0x100>; interrupts = ; reg-shift = <2>; reg-io-width = <4>; clocks = <&cru SCLK_UART3>, <&cru PCLK_UART3>; clock-names = "baudclk", "apb_pclk"; pinctrl-names = "default"; pinctrl-0 = <&uart3_xfer>; status = "disabled"; }; kernel/arch/arm/boot/dts/rk3288-evb.dtsi
&uart3 { status = "okay"; pinctrl-names = "default"; pinctrl-0 = <&uart3_xfer>; dma-names = "tx", "rx"; //使能dma接收 };test:
adb install E:\tmp\apk\ComAssistant.apk
error:
打开串口后，没有信息
调试信息：
01-18 08:57:49.861 1613 1613 D serial_port: Configuring serial port01-18 08:57:49.860 1613 1613 I jw.ComAssistant: type=1400 audit(0.0:28): avc: denied { read } for name="ttyS3" dev="tmpfs" ino=11161 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:serial_device:s0 tclass=chr_file permissive=101-18 08:57:49.860 1613 1613 I jw.ComAssistant: type=1400 audit(0.0:29): avc: denied { write } for name="ttyS3" dev="tmpfs" ino=11161 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:serial_device:s0 tclass=chr_file permissive=101-18 08:57:49.860 1613 1613 I jw.ComAssistant: type=1400 audit(0.0:30): avc: denied { open } for path="/dev/ttyS3" dev="tmpfs" ino=11161 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:serial_device:s0 tclass=chr_file permissive=101-18 08:57:49.860 1613 1613 I jw.ComAssistant: type=1400 audit(0.0:31): avc: denied { ioctl } for path="/dev/ttyS3" dev="tmpfs" ino=11161 ioctlcmd=5401 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:serial_device:s0 tclass=chr_file permissive=101-18 08:57:52.976 223 283 D alsa_route: route_set_controls() set route 2401-18 08:57:52.977 223 283 D AudioHardwareTiny: close device01-18 08:58:42.730 440 611 E Lights Hal: write_int failed to open /修改权限：
diff --git a/device/rockchip/common/sepolicy/untrusted_app.te b/device/rockchip/common/sepolicy/untrusted_app.teindex 00fb48e..aa42d6e 100644--- a/device/rockchip/common/sepolicy/untrusted_app.te+++ b/device/rockchip/common/sepolicy/untrusted_app.te@@ -17,3 +17,4 @@ allow untrusted_app { domain -init -kernel}:file { read getattr open }; get_prop(untrusted_app,ctsgts_prop) allow untrusted_app system_data_file:file r_file_perms; allow untrusted_app sysfs_lut:file { getattr setattr open write };+allow untrusted_app serial_device:chr_file rw_file_perms;diff --git a/device/rockchip/common/ueventd.rockchip.rc b/device/rockchip/common/ueventd.rockchip.rcindex 9cd0b50..acb7151 100755--- a/device/rockchip/common/ueventd.rockchip.rc+++ b/device/rockchip/common/ueventd.rockchip.rc@@ -49,7 +49,7 @@ /dev/compassirq 0660 system system # for GPS-#/dev/ttyS3 0600 gps gps+/dev/ttyS3 0666 gps gps /dev/gps 0660 gps gps error:
仍然没有信息
报错信息正常现象01-18 09:48:10.000 1563 1563 I jw.ComAssistant: type=1400 audit(0.0:30): avc: denied { write } for name="ttyS3" dev="tmpfs" ino=3422 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:serial_device:s0 tclass=chr_file permissive=101-18 09:48:10.006 1563 1563 W linker : /data/app/com.bjw.ComAssistant-1/lib/arm/libserial_port.so has text relocations. This is wasting memory and prevents security hardening. Please fix.01-18 09:48:10.006 1563 1563 D serial_port: Opening serial port /dev/ttyS3 with flags 0x201-18 09:48:10.006 1563 1563 D serial_port: open() fd = 5701-18 09:48:10.006 1563 1563 D serial_port: Configuring serial port01-18 09:48:14.604 223 264 D alsa_route: route_set_controls() set route 2401-18 09:48:14.605 223 264 D AudioHardwareTiny: close device01-18 09:48:18.151 1394 1420 E Ads : Error waiting for future.01-18 09:48:18.151 1394 1420 E Ads : java.util.concurrent.ExecutionException: java.util.concurrent.TimeoutException01-18 09:48:18.151 1394 1420 E Ads : at com.google.android.gms.internal.ads.zzbcl.get(Unknown Source)01-18 09:48:18.151 1394 1420 E Ads : at com.google.android.gms.internal.ads.zzbbq.zza(Unknown Source)01-18 09:48:18.151 1394 1420 E Ads : at com.google.android.gms.internal.ads.zzatq.zza(Unknown Source)01-18 09:48:18.151 1394 1420 E Ads : at com.google.android.gms.internal.ads.zzatq.zzb(Unknown Source)01-18 09:48:18.151 1394 1420 E Ads : at com.google.android.gms.internal.ads.zzats.run(Unknown Source)01-18 09:48:18.151 1394 1420 E Ads : at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:428)01-18 09:48:18.151 1394 1420 E Ads : at java.util.concurrent.FutureTask.run(FutureTask.java:237)01-18 09:48:18.151 1394 1420 E Ads : at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)01-18 09:48:18.151 1394 1420 E Ads : at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)01-18 09:48:18.151 1394 1420 E Ads : at java.lang.Thread.run(Thread.java:761)01-18 09:48:18.151 1394 1420 E Ads : Caused by: java.util.concurrent.TimeoutException01-18 09:48:18.151 1394 1420 E Ads : at com.google.android.gms.internal.ads.zzbbu.run(Unknown Source)01-18 09:48:18.151 1394 1420 E Ads : at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:428)01-18 09:48:18.151 1394 1420 E Ads : at java.util.concurrent.FutureTask.run(FutureTask.java:237)01-18 09:48:18.151 1394 1420 E Ads : at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:272)01-18 09:48:18.151 1394 1420 E Ads : ... 3 more01-18 09:48:18.152 1394 1420 W Ads : There was a problem getting an ad response. ErrorCode: 001-18 09:48:18.153 1394 1394 W Ads : Failed to load ad: 001-18 09:48:18.613 1394 1394 W cr_BindingManager: Cannot call determinedVisibility() - never saw a connection for the pid: 139401-18 09:48:18.621 1394 1394 W cr_ScreenOrientation: Removing an inexistent observer!01-18 09:48:18.622 438 583 D ConnectivityService: releasing NetworkRequest [ LISTEN id=5, [ Capabilities: INTERNET&NOT_RESTRICTED&TRUSTED&FOREGROUND] ]01-18 09:48:18.623 438 583 D ConnectivityService: sending notification RELEASED for NetworkRequest [ LISTEN id=5, [ Capabilities: INTERNET&NOT_RESTRICTED&TRUSTED&FOREGROUND] ]01-18 09:48:22.359 223 264 D AudioHardwareTiny: start_output_stream01-18 09:48:22.360 223 264 D alsa_route: route_info->sound_card 1, route_info->devices 001-18 09:48:25.602 223 264 D alsa_route: route_set_controls() set route 2401-18 09:48:25.603 223 264 D AudioHardwareTiny: close device^C排错方法：
1.检查rx tx有没有短接;
2.引脚有没有被占用;
解决占用，串口可用;
二、提供ttyS3给serialmanager使用的方法
diff --git a/device/rockchip/common/init.connectivity.rc b/device/rockchip/common/init.connectivity.rcindex 33aaf0c..93d12b7 100755--- a/device/rockchip/common/init.connectivity.rc+++ b/device/rockchip/common/init.connectivity.rc@@ -21,12 +21,14 @@ on boot chmod 0660 /dev/ttyS0 chmod 0660 /dev/ttyS1+ chmod 0660 /dev/ttyS3 chmod 0660 /dev/vflash chmod 0664 /dev/vendor_storage chown bluetooth net_bt_stack /dev/vflash chown bluetooth net_bt_stack /dev/vendor_storage chown bluetooth net_bt_stack /dev/ttyS1 chown bluetooth net_bt_stack /dev/ttyS0+ chown system system /dev/ttyS3 chown bluetooth net_bt_stack /sys/class/rfkill/rfkill0/type chown bluetooth net_bt_stack /sys/class/rfkill/rfkill0/state chmod 0664 /sys/class/rfkill/rfkill0/statediff --git a/device/rockchip/common/sepolicy/system_app.te b/device/rockchip/common/sepolicy/system_app.teindex 2e84fc2..04513f2 100755--- a/device/rockchip/common/sepolicy/system_app.te+++ b/device/rockchip/common/sepolicy/system_app.te@@ -16,6 +16,7 @@ allow system_app gpu_device:dir { search }; allow system_app radio_data_file:dir { getattr }; allow system_app vfat:dir create_dir_perms; allow system_app vfat:file create_file_perms;+allow system_app serial_device:chr_file rw_file_perms; #allow system_app system_data_file:dir { rw_dir_perms }; allow system_app cache_recovery_file:dir { search write add_name remove_name }; allow system_app cache_recovery_file:file { create write open read getattr unlink };diff --git a/device/rockchip/common/ueventd.rockchip.rc b/device/rockchip/common/ueventd.rockchip.rcindex 9cd0b50..a8b2b78 100755--- a/device/rockchip/common/ueventd.rockchip.rc+++ b/device/rockchip/common/ueventd.rockchip.rc@@ -49,7 +49,7 @@ /dev/compassirq 0660 system system # for GPS-#/dev/ttyS3 0600 gps gps+/dev/ttyS3 0660 system system /dev/gps 0660 gps gps diff --git a/device/rockchip/rk3288/overlay/frameworks/base/core/res/res/values/config.xml b/device/rockchip/rk3288/overlay/frameworks/base/core/res/res/values/config.xmlindex c3c0cc6..a363d7e 100755--- a/device/rockchip/rk3288/overlay/frameworks/base/core/res/res/values/config.xml+++ b/device/rockchip/rk3288/overlay/frameworks/base/core/res/res/values/config.xml@@ -45,5 +45,12 @@ - "pppoe,15,15,5,-1,true"
+ + + + - "/dev/ttyS3"
+ diff --git a/frameworks/base/core/res/res/values/config.xml b/frameworks/base/core/res/res/values/config.xmlindex e4839d7..40f7c77 100644--- a/frameworks/base/core/res/res/values/config.xml+++ b/frameworks/base/core/res/res/values/config.xml@@ -871,6 +871,7 @@ for example, /dev/ttyUSB0 --> +- "/dev/ttyS3"
diff --git a/frameworks/base/tests/SerialChat/Android.mk b/frameworks/base/tests/SerialChat/Android.mkindex a534e1a..7dfb321 100644--- a/frameworks/base/tests/SerialChat/Android.mk+++ b/frameworks/base/tests/SerialChat/Android.mk@@ -23,4 +23,6 @@ LOCAL_SRC_FILES := $(call all-subdir-java-files) LOCAL_PACKAGE_NAME := SerialChat +LOCAL_CERTIFICATE := platform+ include $(BUILD_PACKAGE)diff --git a/frameworks/base/tests/SerialChat/AndroidManifest.xml b/frameworks/base/tests/SerialChat/AndroidManifest.xmlindex 0efdb58..8d8f660 100644--- a/frameworks/base/tests/SerialChat/AndroidManifest.xml+++ b/frameworks/base/tests/SerialChat/AndroidManifest.xml@@ -15,7 +15,8 @@ --> + package="com.android.serialchat"+android:sharedUserId="android.uid.system">
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