@zifeiyu uart0是两线串口，还需要使用sunxi,uart-485oe属性制定EN方向切换脚

@pcj203 在 f1c200s自制 win10 USB显示屏 中说：

简介
使用f1c200s tiny200s货架板+1024*600RGB屏,实现一个win10 USB显示屏。

方案原理：
host: win10加载手撸的IDD显示驱动，编码桌面成jpg，然后usb发送给f1c200s.
dev: f1c200s，接收到完整一帧jpg数据，硬解码yuv,然后软件转成rgb输出给/dev/fb0映射的ram.

b站视频链接
https://b23.tv/UDaOqCa

1.jpg
2.jpg
3.jpg
性能：

黑白模式20pfs. 彩色10fps

已知bug:

似乎f1c200s硬解jpg和usb传输有小概率性冲突。表现就是0.5%的帧解出来会花掉。

开源情况：

开发未完成。预计农历新年github上开源。

参考:
*1.github.com/microsoft/Windows-driver-samples/tree/master/video/IndirectDisplay

*2.git://github.com/roshkins/IddSampleDriver.git

*3.https://whycan.com/t_8114.html baremetal hardware JPEG-decoder example (F1C100S)

*4.https://github.com/aodzip/buildroot-tiny200

esp32 s2 实现win10 usb显示屏320*240
已经github上开源: https://github.com/chuanjinpang/win10_idd_xfz1986_usb_graphic_driver_display
4.jpg

f1c200s自制 win10 USB显示屏最新的github 连接可以给出来吗？

prebuilt/gcc/linux-x86/arm/toolchain-sunxi-musl

@alb702 感谢您提供的编码，真的。祝福您。

@nezhastu 大佬你好，请问这个问题解决了吗

@dingdong AIC600E3 is a different chip with t113-s4

@guyuandongfang
我也遇到过类似的情况。 看题目 «V853 SDK：Linux内核中的MIPI DSI «

解决了，主要是晶振搞错了。要焊接40M的 有源晶振。

@dort91011 佬，你这个调通了吗？想找你交流一下416567819

@liefyuan 我也遇到类似情况了，您emmc用的sdc2吗？能看看这部分原理图吗和设备树配置吗？不知道是不是我硬件搞得有问题了

@whycan 晕哥 这个项目开源嘛 有教程嘛？我想用V853尝试一下

感谢分享66666666

使用以下指令构建
mkfs.ubifs -x zlib -m 4096 -e 258048 -c 245 -F -r oem_res -o oem_ubifs.fex

@zllfdd 网上资料tina多一些，而且用得人比较多，longan的话我觉得最大的好处就是本身支持EMMC启动，不需要怎么修改，但longan有不少bug，需要自己解决

@qinlinbin 您好，想请问一下可以分享一下串口DMA的测试程序嘛，十分感谢！

@zm960406 您好大佬，我想请教一下如果想使用串口DMA应该如何测试，可以分享一下DMA测试程序吗，感谢！

@awwwwa 老师你好，这个驱动还有个问题：中断只能响应40us以上的高电平才会执行中断，但是我的驱动里面中断函数里面是上升沿触发。我看教程是通过设备树来设置，是因为我是驱动程序里面设置，没有成功吗？还是有其他因素呢？
中断注册部分代码是：

ret = request_threaded_irq(fsfpgaindev.irq_num, irq_gpio_spi_handler,irq_gpio_spi_thread_func,IRQF_TRIGGER_RISING, "irq_gpio", &fsfpgaindev); if(0 > ret) { printk("request_irq error\r\n"); goto fail_irq; } else { printk("fsfpgain irq_num:%d\n",fsfpgaindev.irq_num); }

@memory Android日志会有 I/WindowManager( 2046): SAFE MODE ENABLED (menu=0 s=0 dpad=-1 trackball=-1)报错，然后根据括号内容的值提示，就能找到原因。

强硬去除安全模式的修改，可做参考

diff --git a/services/core/java/com/android/server/power/ShutdownThread.java b/services/core/java/com/android/server/power/ShutdownThread.java index bdb5d3f0..c11d555c 100644 --- a/services/core/java/com/android/server/power/ShutdownThread.java +++ b/services/core/java/com/android/server/power/ShutdownThread.java @@ -255,7 +255,7 @@ public final class ShutdownThread extends Thread { } mReboot = true; - mRebootSafeMode = true; + mRebootSafeMode = false; mRebootHasProgressBar = false; mReason = null; shutdownInner(context, confirm); diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java index d8bb8d86..8193de92 100644 --- a/services/core/java/com/android/server/wm/WindowManagerService.java +++ b/services/core/java/com/android/server/wm/WindowManagerService.java @@ -4500,7 +4500,7 @@ public class WindowManagerService extends IWindowManager.Stub Log.i(TAG_WM, "SAFE MODE not enabled"); } mPolicy.setSafeMode(mSafeMode); - return mSafeMode; + return false; } public void displayReady() {

@ou513 AWOL不提供R818芯片SDK，请联系代理商或使用公司NDA联系FAE获取

使用APST量产工具下载，APST下载地址https://open.allwinnertech.com/

c4e6e010-41a3-4fb7-8756-f5a17469201e-image.png

我目前在使用 V851S 时遇到了类似的问题，您找到根本原因了吗?

然而在A133 android12上，全志的分区表配置中，没有对/data目录进行加密了，启动快了很多

init: Service 'exec 3 (/system/bin/vdc --wait cryptfs enablefilecrypto)' (pid 1753) exited with status 0 waiting took 59.882000 seconds

我最近也遇到了类似启动开机慢的问题，可以跟一下这里的代码，应该是data的文件加密花了59秒导致耗时太长了，源码在android/system/core/init/builtins.cpp 中的 installkey命令，init.rc调用了这个命令去加密data/目录。
不过这个时间可以优化嘛？大佬这么长时间过去了，有没有解决。参考最新的android12代码，我发现android没有做加密/data 目录的动作了（分区表没有配置加密选项）。

@lansecd 1704442509797.png 我用的UART0做调试串口我看资料好像是这样，是还有其他地方没有配置到位吗？

NO TARGET_BOARD_PLATFORM found这个问题解决了吗？

@zxyuser 你在Q群里吧，我就是那个搞好XS9922B的群友

@fenglichaoa 请问RTC怎么开启？

@zzz123 还是编译iproute2，有一些头文件重复定义的去把编译器里的改掉就好了，不用全部编译完，能把ip命令编译出来就好

@whycanservice 感谢，换成MT29F2G01ABAGDWB-IT:G了， 可以正常烧录

@jinxiangwzh
A133/R818 MIPI 口，上OV13850 ， 1300M

@sycamorewt w4y5JoF4nw.png
这个SDK有点坑人，经过漫长的尝试将解码器初始化函数中的红色部分参数设置注释掉就可以正常解码。
AWVideoDecoder.cpp文件路径：T113-Linux-nand/platform/framework/auto/sdk_lib/sdk_decoder/AWVideoDecoder.cpp

@awwwwa 大佬，我看这里是可以支持4Mbit/s的，请问要改时钟的话哪里改？639fbd94-be0f-40f6-abf3-a5ca6999dfd5-image.png

@alb702 好的，非常感谢您的建议。我会尝试一下

@tevet 也不对，没注意看你说的， 你时息屏过程中APP 挂了， 而不是灭屏后不能用。
那看来…… 等楼下大佬回复。

@zenghc 在 f1c100s无法使用PF2的串口RX0功能 中说：

如题，IO资源比较紧张，将PF2设置成串口的RX0，无法接收到串口数据。PF4设置为TX0，可以发送数据。将PF2设置为通用IO口，输入和输出功能正常。请问是否需要特殊的配置，才能将PF2设置为RX0？

PF2应该是只能设置成TX，不能设置成RX。具体可以看一下用户手册或者规格书上关于引脚复用的表

我用的平台时全志H616

@tevet

链接：https://pan.baidu.com/s/1Lye8QQPLPy9Kl7jhQDS7Ig
提取码：dtgd

请谨慎使用，刷机有风险。
请谨慎使用，刷机有风险。
请谨慎使用，刷机有风险。

一失去保修
二可能搞坏
三原系统丢失无法复原

最佳方案是拆下CPU和EMMC 保存起来，自己焊CPU和EMMC上去。
镜像仅刷着玩儿。
镜像仅刷着玩儿。
镜像仅刷着玩儿。

@sunblackshine 在 AXP2101 IRQ唤醒功能为啥不能用 中说：

wakeup

根据 AXP2101 文档，IRQ 引脚可以是输入或输出。 设置睡眠模式时，您可以 当 IRQ 电路设置为低电平一段时间时，对引脚进行编程以从睡眠模式唤醒。
控制器可以将电平设置为低。 控制器的 NMI 输出电路包含一个集电极开路晶体管开关 为了这些目的。 该密钥通过寄存器以编程方式控制。

@aaabbb222 你购买的板子直接问客服不就好了

全志的芯片命名真乱😖

是的，估计要单问代理商，而且代理这颗芯片的代理商也不多，得问对人

@zhang8546 SDK包里都已经包了吧，自己改一下设备树就能用了。

/dev/mmcblk1p2

@awwwwa 嗯嗯，好的，感谢大佬！

@awwwwa 好的，大佬，感谢

环境没有安装

Ubuntu 22.04 / 20.04 更新软件源，更新系统软件包 sudo apt-get update sudo apt-get upgrade -y 安装开发依赖 sudo apt-get install build-essential subversion git libncurses5-dev zlib1g-dev gawk flex bison quilt libssl-dev xsltproc libxml-parser-perl mercurial bzr ecj cvs unzip lsof 安装相关工具 sudo apt-get install kconfig-frontends android-tools-mkbootimg python2 libpython3-dev 增加架构支持 sudo dpkg --add-architecture i386 sudo apt-get update 安装支持包 sudo apt install gcc-multilib sudo apt install libc6:i386 libstdc++6:i386 lib32z1 Ubuntu 18.04 更新软件源，更新系统软件包 sudo apt-get update sudo apt-get upgrade -y 安装开发依赖 sudo apt-get install build-essential subversion git libncurses5-dev zlib1g-dev gawk flex bison quilt libssl-dev xsltproc libxml-parser-perl mercurial bzr ecj cvs unzip lsof 安装相关工具 sudo apt-get install android-tools-mkbootimg libpython3-dev 增加架构支持 sudo dpkg --add-architecture i386 sudo apt-get update 安装支持包 sudo apt install gcc-multilib sudo apt install libc6:i386 libstdc++6:i386 lib32z1 Arch Linux / Manjaro 更新软件源，更新系统软件包 pacman -Syyuu 安装开发依赖 pacman -S --needed base-devel autoconf automake bash binutils bison bzip2 fakeroot file findutils flex gawk gcc gettext git grep groff gzip time unzip util-linux wget which zlib asciidoc help2man intltool perl-extutils-makemaker swig 安装相关工具 pacman -S --needed libelf libtool libxslt m4 make ncurses openssl patch pkgconf python rsync sed texinfo 增加架构支持 pacman -S --needed multilib-devel CentOS / Fedora / openEuler sudo dnf --setopt install_weak_deps=False --skip-broken install bash-completion bzip2 gcc gcc-c++ git make ncurses-devel patch rsync tar unzip wget which diffutils python2 python3 perl-base perl-Data-Dumper perl-File-Compare perl-File-Copy perl-FindBin perl-Thread-Queue glibc.i686 openSUSE sudo zypper install --no-recommends asciidoc bash bc binutils bzip2 fastjar flex gawk gcc

https://pan.baidu.com/s/1qtDLD3rr84hw9MM1l1V_Rg?pwd=6HW6

@whycanservice2 谢谢佬，我把我的镜像放到MQ的那个小板子上跑了一下，也是跑不完每次会卡在同一个地方，但是这个地方已经比MMC 的device 2 not found 多跑了几百行代码。我的板子和MQ的板子都没有外接任何的设备，各模块电源都一致，都是用PB6 PB7 作为输出串口，所以我镜像和硬件都有毛病，这下难搞了👼 0a0ba800-0315-402d-9bc8-e4964849a5fb-image.png

适配于 A133 Android 13 方案，Linux 5.15

ctp { gt9xx { compatible = "goodix,gt9xx"; reg = <0x5d>; status = "okay"; irq-gpios = <&pio PD 20 GPIO_ACTIVE_LOW>; irq-flags = <2>; reset-gpios = <&pio PD 21 GPIO_ACTIVE_LOW>; vdd_ana-supply = <&reg_cldo2>; touchscreen-max-id = <11>; touchscreen-size-x = <1280>; touchscreen-size-y = <800>; touchscreen-max-w = <512>; touchscreen-max-p = <512>; //touchscreen-key-map = <172>, <158>; /*KEY_HOMEPAGE=172, KEY_BACK=158，KEY_MENU=139*/ goodix,slide-wakeup = <0>; goodix,type-a-report = <1>; goodix,driver-send-cfg = <0>; goodix,send-cfg-id = <0>; goodix,resume-in-workqueue = <0>; goodix,int-sync = <1>; goodix,revert_x = <0>; goodix,revert_y = <0>; goodix,swap-x2y = <0>; goodix,tp_idle_support = <1>; goodix,esd-protect = <1>; goodix,auto-update-cfg = <0>; goodix,power-off-sleep = <1>; goodix,pen-suppress-finger = <0>; /* GT9271_Config_20221222_v67.cfg*/ goodix,cfg-group0 = [ B4 00 05 20 03 0A 3D 00 01 0A 28 0F 50 32 03 05 00 00 00 00 00 00 06 17 19 1F 14 8E 2E 99 2D 2F 35 11 00 00 00 1A 03 10 00 00 00 00 00 00 00 00 00 00 00 32 50 94 D5 02 07 00 00 04 8E 48 00 8A 4D 00 86 53 00 83 59 00 80 60 00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 04 05 06 07 08 09 0C 0D 0E 0F 10 11 14 15 16 17 FF FF FF FF FF FF FF FF FF FF FF FF 28 27 26 25 24 23 22 21 20 1F 1E 1C 1B 19 13 12 11 10 0F 0D 0C 0A 08 07 06 04 02 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF AB 01 ]; };

@livpo

你好。

在控制台中运行命令：
echo 12345 >/dev/ttyS2

如果答案是这样的：
write error: Input/output error

这意味着问题不在于您的程序，而在于驱动程序。

需要在控制台查看 dmesg 命令的输出

驅動程式在哪我找不到？

@allwinnercoding 硬解？能不能具体说说如何做。现在tplayerdemo默认不是硬解吗

@zzz555 The clock signal may be operating at a speed outside the bandwidth of your oscilloscope. Check the Hz setting of your clock, and ensure it is less than the bandwidth of the oscilloscope (likely 100 MHz).

If it is higher, then the signal will be attenuated. Configure the scope to be AC-coupled and try increasing the scope gain to see a faint signal.

@ddrddr 跟踪学习一下

@awwwwa 找到问题了，核心电压原本是0.9v给到0.95就正常了

1fdc4b7964de85efe2153e2fedf1713.png

发现OpenWRT已经内置了Orange Pi PC 支持了。

你要注意一下，这儿的 spi 速度值并不是可以随便设置的！ 因為 cpu 除频后会配不上！ 会跳到默认的 10Mhz 的速度。

建议你可以在 .... spi 中，加打印，看看你那值是否可以通过！

/driver/spi/spi-sunxi.c 中

/* set spi clock */ static void spi_set_clk(u32 spi_clk, u32 ahb_clk, struct sunxi_spi *sspi) { u32 spi_test = 100000000; u32 get_spi; dprintk(DEBUG_INFO, "set spi clock %d, mclk %d\n", spi_clk, ahb_clk); for(spi_test = 50000000; spi_test >= 20000000; spi_test -= 1000000) { clk_set_rate(sspi->mclk, spi_test); get_spi = clk_get_rate(sspi->mclk); printk("spi_test %d == get %d \n", spi_test, get_spi); }

像我以 100Mhz 到 80Mhz ， 每 1Mhz 做变化！

[ 1.079831] spi_test 100000000 == get 100000000 ␍␊ [ 1.093426] spi_test 99000000 == get 96000000 ␍␊ [ 1.098527] spi_test 98000000 == get 96000000 ␍␊ [ 1.103587] spi_test 97000000 == get 96000000 ␍␊ [ 1.108714] spi_test 96000000 == get 96000000 ␍␊ [ 1.113807] spi_test 95000000 == get 92307692 ␍␊ [ 1.118905] spi_test 94000000 == get 92307692 ␍␊ [ 1.123996] spi_test 93000000 == get 92307692 ␍␊ [ 1.129127] spi_test 92000000 == get 87771428 ␍␊ [ 1.134193] spi_test 91000000 == get 87771428 ␍␊ [ 1.139293] spi_test 90000000 == get 87771428 ␍␊ [ 1.144406] spi_test 89000000 == get 87771428 ␍␊ [ 1.149506] spi_test 88000000 == get 87771428 ␍␊ [ 1.154601] spi_test 87000000 == get 85714285 ␍␊ [ 1.159739] spi_test 86000000 == get 85714285 ␍␊ [ 1.164835] spi_test 85000000 == get 80000000 ␍␊ [ 1.169939] spi_test 84000000 == get 80000000 ␍␊ [ 1.175074] spi_test 83000000 == get 80000000 ␍␊ [ 1.180142] spi_test 82000000 == get 80000000 ␍␊ [ 1.185243] spi_test 81000000 == get 80000000 ␍␊ [ 1.190346] spi_test 80000000 == get 80000000 ␍␊

就可以知道，有一些值设置是不行的！ 要特定值才行！

使用fel，下面的代码可以调通dram:

sunxi-fel writel 0x1C2015C 0x0 sunxi-fel writel 0x1C200FC 0x0 sunxi-fel writel 0x1C20060 0x1000000 sunxi-fel writel 0x1C202C0 0x1000000 sunxi-fel writel 0x1C20020 0x1000 10 sunxi-fel writel 0x1C20100 0x0 1000 sunxi-fel writel 0x1C20020 0x80101D00 5500 sunxi-fel writel 0x1C200F4 0x10000 sunxi-fel writel 0x1C202C0 0x1004000 sunxi-fel writel 0x1C20060 0x1004000 sunxi-fel writel 0x1C2015C 0x80000000 sunxi-fel writel 0x1C200FC 0x80000000 sunxi-fel writel 0x1C200F4 0x80000000 10 sunxi-fel writel 0x1C6300C 0xC00E 500 sunxi-fel writel 0x1C62000 0x4219E4 sunxi-fel writel 0x1C63030 0x263 sunxi-fel writel 0x1C63034 0x4 sunxi-fel writel 0x1C63038 0 sunxi-fel writel 0x1C6303C 0 sunxi-fel writel 0x1C63058 0x8091B09 sunxi-fel writel 0x1C6305C 0x2020C sunxi-fel writel 0x1C63060 0x3030307 sunxi-fel writel 0x1C63064 0x200C sunxi-fel writel 0x1C63068 0x4010203 sunxi-fel writel 0x1C6306C 0x5050403 sunxi-fel writel 0x1C63078 0x90006610 sunxi-fel writel 0x1C63080 0x2010101 sunxi-fel writel 0x1C63050 0xB523281 sunxi-fel writel 0x1C63054 0x16911941 sunxi-fel writel 0x1C63090 0x2B003C sunxi-fel writel 0x1C62090 0x10190 sunxi-fel writel 0x1C62098 0x1 sunxi-fel writel 0x1C62010 0x200000D sunxi-fel writel 0x1C62014 0x800100 sunxi-fel writel 0x1C62018 0x6000009 sunxi-fel writel 0x1C6201C 0x1000400 sunxi-fel writel 0x1C62020 0x200000D sunxi-fel writel 0x1C62024 0x600100 sunxi-fel writel 0x1C62028 0x100000D sunxi-fel writel 0x1C6202C 0x200080 sunxi-fel writel 0x1C62030 0x7000009 sunxi-fel writel 0x1C62034 0x1000640 sunxi-fel writel 0x1C62038 0x100000D sunxi-fel writel 0x1C6203C 0x200080 sunxi-fel writel 0x1C62040 0x1000009 sunxi-fel writel 0x1C62044 0x400080 sunxi-fel writel 0x1C62048 0x100000D sunxi-fel writel 0x1C6204C 0x400080 sunxi-fel writel 0x1C62050 0x100000D sunxi-fel writel 0x1C62054 0x400080 sunxi-fel writel 0x1C62058 0x4000009 sunxi-fel writel 0x1C6205C 0x400100 sunxi-fel writel 0x1C62060 0x2000030D sunxi-fel writel 0x1C62064 0x4001800 sunxi-fel writel 0x1C62068 0x4000009 sunxi-fel writel 0x1C6206C 0x400120 sunxi-fel writel 0x1C63100 0x4005400 sunxi-fel writel 0x1C63104 0x4680C620 sunxi-fel writel 0x1C62800 0x94BE6FA3 100 sunxi-fel writel 0x1C63888 0x80500010 sunxi-fel writel 0x1C62800 0x0 100 sunxi-fel writel 0x1C63344 0x7C0002A1 sunxi-fel writel 0x1C633C4 0x7C0002A1 sunxi-fel writel 0x1C63444 0x20 sunxi-fel writel 0x1C634C4 0x20 sunxi-fel writel 0x1C63208 0x34A sunxi-fel writel 0x1C63108 0x2CC0 sunxi-fel writel 0x1C63100 0x4000400 sunxi-fel writel 0x1C63108 0x26C0 sunxi-fel writel 0x1C630C0 0x81003087 sunxi-fel writel 0x1C63310 0x10 sunxi-fel writel 0x1C63314 0x10 sunxi-fel writel 0x1C63318 0x10 l sunxi-fel writel 0x1C6331C 0x10 sunxi-fel writel 0x1C63320 0x10 sunxi-fel writel 0x1C63324 0x10 sunxi-fel writel 0x1C63328 0x10 sunxi-fel writel 0x1C6332C 0x10 sunxi-fel writel 0x1C63330 0x10 sunxi-fel writel 0x1C63390 0xE sunxi-fel writel 0x1C63394 0xE sunxi-fel writel 0x1C63398 0xE sunxi-fel writel 0x1C6339C 0xE sunxi-fel writel 0x1C633A0 0xE sunxi-fel 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