-up interface: Enable_irq_wake () and Disable_irq_wake ()Some interrupts can wake up the system from sleep, we call it "can wake up the system's interruption", of course, "can wake up the system interrupts" need to configure to start the wake-up system such functions. Such interrupts are typically present as normal I/O interrupt when working, so that special configurations and settings are initiated only when the system is ready to be awakened.Such configurations and settings may be related to t
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~] # Ifconfig-If you want to view a port, such as the eth0 status, you can use the following method;[Root @ localhost ~] # Ifconfig eth02. Configure the network interface in ifconfig;Ifconfig can be used to configure IP addresses, masks, gateways, and physical addresses of network interfaces.Specify an IP address for the NIC. This is only used for network debugging and does not change the NIC configuration file. If you want to fix the IP address of the network interface, there are three methods
Mobile phone design companies design products with different performance based on different mobile phone R D platforms!
The basic process of mobile phone R D is:
Generally, mobile phone R D companies need to have six departments: ID, MD, HW, SW, PM, sourcing, and QA.
1. Industrial Design
Including the appearance, material, feel, color matching of the mobile phone, the main interface implementation and color design.
For example, Motorola's "brig
service UI rendering thread.
Step 8. surfaceflinger. oreadytorun
This function is defined in the frameworks/base/services/surfaceflinger. cpp file to initialize the UI rendering thread of the surfaceflinger service. We will read it in segments:
status_t SurfaceFlinger::readyToRun(){ LOGI( "SurfaceFlinger's main thread ready to run. " "Initializing graphics H/W..."); // we only support one display currently int dpy = 0; { // initialize the main display Gra
register of type int data, so use 4 bytes to represent an int type of data). When interacting with the LED driver, the specified register can be read and written to the device file (/dev/s3c64io_leds_hal) as long as it reads or sends 5 bytes of data.
Test read-Write register operation
Each part of the program should be tested in the process of writing Linux drivers and driver-related programs.Use the following command to execute the build.sh script file in the appropriate director
? In this document, there are:/*** There is a set of variant filename for modules. The form of the filename* is ' * of Base "Ro.product.board", "Ro.board.platform" and "Ro.arch" would be:** led.trout.so* led.msm7k.so* LED. Armv6.so* led.default.so*/static const char *variant_keys[] = {"Ro.hardware",/* This goes first so the it can pick up a differentFile on the emulator. */"Ro.product.board","Ro.board.platform","Ro.arch"};You can see that it is actually a string array. Station and do not know wh
an interrupt event occurs, requests the processing of the CPU system via an electrical signal on the IRQ request line. The peripheral IRQ request line is too many, the CPU needs a small partner to help him, this is the interrupt controller. The Interrupt controller is a bridge that connects peripheral interrupt systems and CPU systems. Depending on how much the peripheral IRQ request line is, the Interrupt controller can cascade. The main function of the CPU is the operation, so the CPU does no
achieve. public static void Main (string[] args) {Create the object and invoke the native method inside.HelloWorld HW = new HelloWorld ();Hw.printtext ();} } After the class finishes compiling, the next thing is solved by Delphi. We run Delphi after the new DLL project: File->new->other, and then select the DLL in the new tab The Wizard creates a new project,We select a folder to save the projectAfter saving the project, we need to download Jni.pas t
use the keyword "Const" (the keyword means that the system defines a word that has special functions, cannot be used as a variable name or a constant name), and the format is: const constant NAME = constant value.
For example:
Const PI=3.1415926
Const name= "Memory Fragment"
So we've defined two constants, pi, and name, and in general, the constant name is all capitalized, but it doesn't have to be the same as you like.It is a good practice to define a number of values that do not need to b
Mobile phone production Process Brief introduction: When everyone sees a novel and has a high performance, bright design of mobile phones appear, do you have such curiosity, such a phone how to make it? Today we try to use a technical objective angle, to describe the mobile phone production process briefly, So that you know more about the structure of mobile phone! First, the mobile phone design processMobile design companies generally need the most basic six departments: ID (Industry design) I
attempt is made to change. define a variable. We use the keyword "const" (the keyword means that the system has defined a word with special functions and cannot be used as a variable name or constant name). The format is: const constant name = constant value.
For example:
Const PI = 3.1415926
Const NAME = "memory fragments"
In this way, we define two constants, PI and NAME. In general, the constant names are all capitalized, but they can also be used. defining some values that do not need to be
Brief Introduction to the design process of mobile phones
Average mobile phoneDesignThe company needs to have six basic departments: ID, MD, HW, SW, PM, sourcing, and QA. This actually shows the design process of the mobile phone.1. Industrial DesignIncluding the appearance, material, feel, color matching of the mobile phone, the main interface implementation and color design.For example, Motorola "Ming" is translucent, Nokia 7610 is arc-shaped, and S
I replied to a post last night. The content is classic. So I 'd like to open a post for you to study!
It mainly includes two System Performance Parameters in the machine:
1. Debug. SF. hW = 0 and change to debug. SF. hW = 1. This step enables hardware acceleration.
2. Modify Dalvik. VM. heapsize = 24 m to Dalvik. VM. heapsize = 32 m. In this step, set the Virtual Machine size to 32 m.
Note that this is to
the keyword "Const" (the keyword means that the system defines a word that has special functions, cannot be used as a variable name or a constant name), and the format is: const constant NAME = constant value.
For example:
Const PI=3.1415926
Const name= "Memory Fragment"
So we've defined two constants, pi, and name, and in general, the constant name is all capitalized, but it doesn't have to be the same as you like.It is a good practice to define a number of values that do not need to be ch
-precision timer trigger, etc., in the multi-core architecture, the system for each CPU set up a tick device, as follows:
DEFINE_PER_CPU (struct tick_device, tick_cpu_device);
The clock event device for local tick device should have the following features:(a) the HW timer corresponding to the clock event device must be associated with the CPU core (i.e., the interrupt of the HW timer can be de
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