Matrix keyboard driver under Linux and Qtopia-EEWORLD

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Keywords：Linux Reference address：Matrix keyboard driver under Linux and Qtopia

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Recommended ReadingLatest update time:2024-11-16 11:40

Detailed explanation of the process of booting linux-5.11 (uImage) with u-boot-2021.01

fatload mmc 0:1 0x50008000 uImage;bootm 0x50008000; SUDEBUG: ../common/bootm.c,bootm_find_os,line = 235,images.os.start:0x50008000 // The starting position of the memory address where uImage is located SUDEBUG: ../common/bootm.c,bootm_find_os,line = 236,images.os.end:0x501c67b8 // The end of the memory address where

[Microcontroller]

The whole process of transplanting linux-2.6.22.1 to s3c2410

I have been working on the porting of Linux 2.6.22.1 for the past two days. Although I encountered many difficulties and wasted a lot of time, it finally came out last night. I am posting the detailed process of the porting for your reference. If you don't succeed according to what I said, it may be related to your de

[Microcontroller]

Porting Linux-5.4+ kernel to 4412 development board

Preface The ITOP-4412 development board is officially supported by Linux , so it is very convenient for us to learn new kernels on 4412. The author of this article is a technical expert in the 8th group of the 4412 elite group. Next, let's enjoy his performance together. Environment Description OS version Ubuntu 20

[Microcontroller]

Porting Linux-5.4+ kernel to 4412 development board

CMU controller solution implemented by ARM chip based on Linux embedded operating system

Zigbee wireless communication and Linux embedded operating system are often contacted by electronic people. Here we have designed a CMU controller based on the ARM chip S3C2440 as the hardware platform and based on the Linux embedded operating system. The CMU is connected to each home appliance wireless node and senso

[Microcontroller]

CMU controller solution implemented by ARM chip based on Linux embedded operating system

S3C2440 Linux driver transplantation - button

Development board: TQ2440 Kernel version: 2.6.32 1. Hardware connection diagram Four input pins: EINT0-----( GPF0 )----INPUT---K4 EINT2-----( GPF2 )----INPUT---K3 EINT4-----( GPF4 )----INPUT---K2 EI

[Microcontroller]

S3C2440 Linux driver transplantation - button

LINUX Kernel Porting

1. Download the kernel source code linux-2.6.34 and unzip it to the working directory. 2. First add a SOC to the kernel, copy mach-smdk6410.c to mach-ok6410.c under /arch/arm/mach-s3c64xx Modify mach-ok6410.c and replace smdk6410 with ok6410 and SMDK6410 with OK6410 :1,$s/smdk6410/ok6410/g Modify

[Microcontroller]

Embedded Linux Development (XVIII) Memory Management (2) ARM Memory Management

Hardware memory management armv7v8 ARM is uniformly addressed, that is, peripherals and (memory A) are uniformly addressed, together forming a 4G physical address space (32 bits as an example). The memory controller belongs to peripherals, and the memory belongs to (memory A). The internal and external memory of a soc

[Microcontroller]

A brief analysis of the Arm Linux operating system calling process.

System call is a service provided by the OS operating system. User programs use various system calls to reference various services provided by the kernel. The execution of the system call causes the user program to fall into the kernel, and the falling action is completed by the swi soft interrupt. The soft inter

[Microcontroller]

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