embedded android device

Article Title: how to add your own device driver in embedded Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. The driver can be compiled in two ways. one is to statically compile the program into the kernel, and the othe

Article Title: how to add your own device driver in embedded LINUX. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. The driver can be compiled in two ways. one is to statically compile the program into the kernel, and the othe

upper nodes use Kset. struct Kset { struct list_head list; spinlock_t List_lock; struct Kobject kobj; const struct kset_uevent_ops *uevent_ops;};the kobj in the Kset structure shows that it is also a kobject,list variable used to organize all of its sub-objects. In Module_init, we first call Kset_create_and_add to create the My_kset, then assign My_kset to Obj1 and Obj2, and finally call Kobject_init_and_add to add obj1 and obj2. It is important to note that the parent in the Kobjec

Why not create a swap partition on an embedded device-Linux general technology-Linux programming and kernel information? For more information, see the following. We know that there is a very important concept in linux: Virtual Memory. When the physical memory is not enough, some data in the memory can be stored on the hard disk, giving way to the physical memory. We usually create a swap partition when inst

The driver can be compiled in two ways. One is to statically compile the program into the kernel, and the other is to compile the program into a module for dynamic loading. Because uClinux does not support dynamic module loading, and embedded Linux cannot use insmod/rmmod as flexibly as Desktop Linux does, so here we will only introduce how to statically compile the device driver into the uClinux kernel.The

);　　　　　　　　　　　　　　　　　　　//Destroy Class Iounmap (Gpfcon); //de-Physical Address mapping PRINTK ("led Module exit\n");} Module_init (Led_init); Module_exit (Led_exit); Module_license ("GPL");Makefile of the module:obj-m:=led.okerneldir:=/home/jz2440/linux-2.6. 22.6 pwd:=$ (Shell PWD)default: -C $ (kerneldir) m=$ (PWD) Modulesclean: -rf *.o *.mod.c *.mod.o *.ko *.symversTest file:#include #include#include#includeintMainintargcChar**argv) { intFD; intval =1; if(ARGC! =3) {printf ("Please inp

,0), NULL,"My_fog"); if(Ret! =0) PRINTK ("Register fail!\n"); //X￠2á? D???? Àí3ìdòRequest_irq (Irq_eint ( -), Fog_int,irqf_trigger_falling,"Fog",0); //°?? Ü3?ê?? ˉtFog_hw_init (); //. ???? 1€x÷Work1= Kmalloc (sizeof(structwork_struct), Gfp_kernel); Init_work (Work1, Work1_func); /*3?ê?? ˉt?? ʱ?÷*/Init_timer (Fogs_timer); Fogs_timer.function=fogs_timer_function; /*? Ò?úo?x￠2áò????? ʱ?÷*/Add_timer (Fogs_timer); /*3?ê?? ˉμè?y?óád*/Init_waitqueue_head (fog_q); return 0;}Static voidFog_exit () {

Android device information retrieval: android device Information Retrieval Android device Information Retrieval Permission: Import android. app. Activity;Import

1. Modify the storage drive letter name of the Android device (Note: tbdg1073 is my project name) 1. Modify the device/other/tbdg1073/system. Prop file. 2. Modify the Ro. Media. patition. Label attribute to ouyangpeng. 3. Re-compile after modification 4. Connect the mid to the computer via USB. The drive letter is ouyangpeng. 2. Modify the