目标：用游戏手柄控制贪吃蛇 硬件平台：imax6q 版本信息： arm-none-linux-gnueabi-gcc-4.8.3、 qt5.7.1、linux3.0.1 一、交叉编译tslib1.4 由于 imax6q是 armv7-a 构架，所以以后的编译我们都应编译出 armv7 平台的文件 编译参数： echo ‘ac_cv_func_malloc_0_nonnull=yes’ > arm-linux.cache CFLAGS=-march=armv7-a ./configure -host=arm-linux -cache-file=arm-linux.cache -prefix=/usr/local/tslib_v7 编译成功后 我们验证下 二、编译qt4.7.1 安装依赖 apt-get install libxcb1 libxcb1-dev libx11-xcb1 libx11-xcb-dev libxcb-keysyms1 libxcb-keysyms1-dev libxcb-image0 libxcb-image0-dev libxcb-shm0 libxcb-shm0-dev libxcb-icccm4 libxcb-icccm4-dev libxcb-xfixes0-dev libxrender-dev libxcb-shape0-dev libxcb-randr0-dev libxcb-render-util0 libxcb-render-util0-dev libxcb-glx0-dev libxcb-xinerama0-dev xorg-dev zlib1g-dev 修改qtbase/mkspecs/linux-arm-gnueabi-g++/qmake.conf # # qmake configuration for building with arm-linux-gnueabi-g++ # MAKEFILE_GENERATOR = UNIX CONFIG += incremental QMAKE_INCREMENTAL_STYLE = sublib QT_QPA_DEFAULT_PLATFORM = linux #eglfs QMAKE_CFLAGS_RELEASE += -O2 -march=armv7-a QMAKE_CXXFLAGS_RELEASE += -O2 -march=armv7-a include(../common/linux.conf) include(../common/gcc-base-unix.conf) include(../common/g++-unix.conf) # modifications to g++.conf QMAKE_CC = arm-none-linux-gnueabi-gcc QMAKE_CXX = arm-none-linux-gnueabi-g++ QMAKE_LINK = arm-none-linux-gnueabi-g++ QMAKE_LINK_SHLIB = arm-none-linux-gnueabi-g++ # modifications to linux.conf QMAKE_AR = arm-none-linux-gnueabi-ar cqs QMAKE_OBJCOPY = arm-none-linux-gnueabi-objcopy QMAKE_NM = arm-none-linux-gnueabi-nm -P QMAKE_STRIP = arm-none-linux-gnueabi-strip load(qt_config) 下面是我的配置脚本 #!/bin/sh ./configure -v -prefix /opt/armv7_qt-5.7.0 -release -opensource -make libs -xplatform linux-arm-gnueabi-g++ -optimized-qmake -pch -qt-sql-sqlite -qt-libjpeg -qt-zlib -no-opengl -skip qt3d -skip qtcanvas3d -skip qtpurchasing -no-sse2 -no-openssl -no-nis -no-cups -no-glib -no-iconv -nomake examples -nomake tools -skip qtvirtualkeyboard -I/usr/local/tslib_v7/include -L/usr/local/tslib_v7/lib exit 这是我的arm环境变量 export TSLIB_ROOT=/opt/tslib1.4 export QT_ROOT=/opt/qt-5.7.0 export TSLIB_TSDEVICE=/dev/input/event2 export TSLIB_TSEVENTTYPE=input export TSLIB_CONFFILE=/opt/tslib1.4/etc/ts.conf export TSLIB_PLUGINDIR=/opt/tslib1.4/lib/ts export TSLIB_CONSOLEDEVICE=none export TSLIB_FBDEVICE=/dev/fb0 export QWS_MOUSE_PROTO=tslib:/dev/input/event2 export LD_LIBRARY_PATH=/lib:/usr/lib:/usr/local/lib:$QT_ROOT/lib:$TSLIB_ROOT/lib:$TSLIB_ROOT/lib/ export QT_QPA_PLATFORM_PLUGIN_PATH=$QT_ROOT/plugins #很重要 export QT_QPA_PLATFORM=linuxfb:tty=/dev/fb0 export QT_QPA_FONTDIR=$QT_ROOT/lib/fonts export QT_QPA_GENERIC_PLUGINS=tslib export QWS_USB_KEYBOARD=/dev/input/event4 #键盘支持 具体编译过程我就不再细说，网上教程很多 http://blog.csdn.net/u012175418/article/details/52704734 完了后在主机配置QT 主要是要指定 交叉编译器的gcc、g++，和qt的qmake

1. 驱动移植

对于驱动想法我是 用 内核的usbmouse.c 为模版，进行修改，由于前期在做游戏手柄驱动时遇到技术问题，我暂时改用 鼠标模拟键盘， 左键、右键、中键、pid 键 分别对应 A、D、W、S。用的典型的 usb + input 系统。 主要修改 中断函数 static void usb_mouse_irq(struct urb *urb) { struct usb_mouse *mouse = urb->context; signed char *data = mouse->data; struct input_dev *dev = mouse->dev; int status; static unsigned char pre_val; char flag = 255; switch (urb->status) { case 0: /* success */ break; case -ECONNRESET: /* unlink */ case -ENOENT: case -ESHUTDOWN: return; /* -EPIPE: should clear the halt */ default: /* error */ goto resubmit; } if ((pre_val & (1<<0)) != (data[0] & (1<<0))) { /* 左键发生了变化 */ printk("L KEY "); input_event(dev, EV_KEY, KEY_A, (data[0] & (1<<0)) ? 1 : 0); input_sync(dev); } if ((pre_val & (1<<1)) != (data[0] & (1<<1))) { /* 右键发生了变化 */ input_event(dev, EV_KEY, KEY_D, (data[0] & (1<<1)) ? 1 : 0); input_sync(dev); } if (data[2] == 0x15) { /* 中键发生了变化 */ input_event(dev, EV_KEY, KEY_W, 1); input_event(dev, EV_KEY, KEY_W, 0); input_sync(dev); } pre_val = data[0]; if (data[2] == 0x1f ){ //printk("orange down"); //pre_val = 0x1f; flag = 's'; input_event(dev, EV_KEY, KEY_S, 1); input_event(dev, EV_KEY, KEY_S, 0); input_sync(dev); } input 的初始化也得改 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); /*input_dev->keybit[BIT_WORD(KEY_W)] = BIT_MASK(KEY_A) | BIT_MASK(KEY_D) | BIT_MASK(KEY_S); input_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); input_dev->keybit[BIT_WORD(BTN_MOUSE)] |= BIT_MASK(BTN_SIDE) | BIT_MASK(BTN_EXTRA); input_dev->relbit[0] |= BIT_MASK(REL_WHEEL); */ //set_bit(KEY_A, input_dev->keybit); for (i = 0; i < 255; i++) set_bit(usb_kbd_keycode[i], input_dev->keybit); 这里的usb_kbd_key_code 是借用usb键盘的代码。 附上测试视屏 (在文章底部，这是我的另一个博客) 欢迎大家留言提问交流