资讯
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ROS节点是什么 如何诞生的(2023-09-14)
::init() befe using any other part of the ROS system. */
ros::init(argc, argv, "talker");
ros......
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构建根文件系统(2)Busybox init 进程(2023-08-15)
构建根文件系统(2)Busybox init 进程;讲init进程的启动过程从/etc/inittab出发。
内核启动init进程时已经打开/dev/console设备作为控制台,一般......
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【嵌入式开发】写入开发板Linux系统-模型S3C6410(2024-09-18)
' destination='com.ubuntu.Upstart' (uid=0 pid=1 comm='/sbin/init')
start: Rejected send message, 1 matched......
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【嵌入式开发】向开发板中烧写Linux系统-型号S3C6410(2024-09-23)
='com.ubuntu.Upstart' (uid=0 pid=1 comm='/sbin/init')
start: Rejected send message, 1 matched rules; type='method_call......
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()
(gdb) load
Loading section .text, size 0xe1d0 lma 0x30000100
Loading section .init, size 0x20 lma......
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AM335X的SD卡更新系统学习记录(2024-08-19)
rootfs分区(EXT3)的文件系统
7、文件系统是利用Busybox工具集创建的,首先内核会启动BusyBox里的Init进程。init进程首先主要对/etc/inittab文件进行解析,然后......
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Linux移植之make uImage编译过程分析(2024-08-26)
/kernel/init_task.o init/built-in.o --start-group usr/built-in.o arch/arm/kernel/built-in.o arch/arm......
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(6)s3c2440用I2C接口访问EEPROM(2023-06-19)
-Tx [5]:busy signal status/start stop conditon !!! [4]:serial output enable/disable bit 1......
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51单片机制作简易电风扇定时控制器(2023-09-05)
。
0x92,0x82,0xF8,0x80,0x90,0xff};//5-9,熄灭符
uchar start,stop,close,sum,time; //各其本变量
uchar fliflag,cflag,zflag,x,y;//各标志位
uint......
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6通道dmx512控制器程序(2022-12-26)
:channel2,etc.
//function declare
void Init(void);
unsigned char GetAdcValue(unsigned char ch_n); //ch_n......
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tiny6410的启动参数(2024-09-27)
tiny6410的启动参数;bootargs=root=/dev/mtdblock2 rootfstype=yaffs2 init=/linuxrc console......
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基于51单片机的超声波测距系统设计(2023-03-03)
#define uint unsigned int
#define ulong unsigned long int
#define V=173
sbit CSOut=P1^7;
sbit Start=P1......
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XMLRPC服务器如何启动(2023-09-14)
运行到了下面这个函数,它打算启动XMLRPC服务器端。
所以调用的顺序是:roslaunch_ init _.py文件中的main()函数调用parent.pystart()函数,start()函数......
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摄像头驱动学习(2024-07-10)
(SIO_C);
High(SIO_D);
WAIT_STABLE();
return 0;
}
由上面的图可以看出,CLK高电平时,DATA拉低,即为START
static void......
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AM335X的应用程序自启动流程以及U盘更新应用程序记录(2024-08-19)
后会从MMC的/sys分区的/boot目录下取出uImage镜像再到RAM中运行。Linux启动后,会接着挂接EMMC的/sys分区,启动BusyBox里的Init进程。init进程首先主要对/etc......
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Linux移植之子目录下的built-in.o生成过程分析(2024-08-26)
/kernel/vmlinux.lds
arch/arm/kernel/head.o arch/arm/kernel/init_task.o init/built-in.o --start-group......
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linux之rootfs (UBIFS)(2024-09-02)
660 console c 5 1
mknod -m 660 null c 1 3
(这两个设备用来供init启动时调用)
现在来看一下busybox需要哪些动态链接库,返回到busybox......
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S3C6410之uboot回炉再造(7)C环境的入口(2024-09-02)
configuration */
{
ulong start;
ulong size;
} bi_dram[CONFIG_NR_DRAM_BANKS......
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移植Linux-3.4.2内核到S3C2440(2024-06-17)
.进行堆栈、MMU等其他程序运行关键的东西进行初始化
3.打印内核信息
4.执行各种模块的初始化
5.挂接根文件系统
6.启动第一个init进程
对于ARM的处理器,内核第一个启动的文件是arc/arm......
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MaxWit及其中的g-bios 在mini2440的初次使用(2024-06-25)
= S3C2440NAND = 0xEC:0x76Load g-bios from (1.Flash, 2.Serial): 1 1. [ArchHeapInit() @ 0x330121a4]Init......
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RT-Thread移植使用webserver (lwip+httpd)(2023-10-30)
Init /httpd_init();/ 配置 SSI 处理程序 /httpd_ssi_init();/ 配置 CGI 处理器 */httpd_cgi_init();rt_kprintf("tNow......
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lesson9 IIC串行总线的组成及工作原理(2024-04-09)
for(i=0;i 19 for(k=0;k<125;k++);
20 }
21
22 void start() //开始信号
23 {
24......
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使用BusyBox制作linux根文件系统(CramFS+mdev)(2024-08-30)
sys tmp usr var2、创建设备 文件mdev 是通过 init 进程来启动的,在使用 mdev 构造 /dev 目录之前,init 至少要用到设备文件/dev/console......
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s3c2440裸机开发调试环境(MDK4.72,Jlink v8,mini2440)(2024-08-09)
;
}
FUNC void Init (void) {
_WDWORD(0x4A000008, 0xFFFFFFFF); // Disable All Interrupts......
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DM9000网卡驱动分析(2024-09-19)
;
9 int iosize;
10 int i;
11 u32 id_val;
12
13 /* Init network device */
14......
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STM32CubeMX系列 | 串口通讯(2023-03-20)
行传输之前,双方一定要使用相同的波特率设置。波特率就是每秒钟传输的数据位数。常用的两种基本串行通信方式包括同步通信和异步通信。我们通常使用的是异步通信,异步通信规定传输的数据格式由起始位(start bit)、数据......
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基于ST STM32F334 之350W无桥功因数位电源方案(2023-02-13)
概述为若处于PFC IDLE状态。在这里,系统等待交流电源插入,并验证是否没有故障。如果未检测到故障,则新状态为PFC INIT。在这种状态下,PI调节器的积分项将被重置,致能PM8834及relay......
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S3c2440裸机-spi编程-3.gpio模拟spi驱动OLED(2023-07-21)
.SPI初始化
新建一个gpio_spi.c文件,实现SPI初始化SPIInt()
1.1 GPIO init(pinmux管脚等配置)
上图J3为板子pin2pin到OLED的底座。
GPF1作为......
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24C01读写的c51源程序代码分享(2023-09-13)
;
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_(); //Thd:STA
SCL=0; //START
write_8bit......
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s3c2440裸机-spi编程-3-gpio模拟spi驱动OLED(2024-07-05)
.SPI初始化
新建一个gpio_spi.c文件,实现SPI初始化SPIInt()
1.1 GPIO init(pinmux管脚等配置)
上图J3为板子pin2pin到OLED的底座。
GPF1作为......
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Linux内存管理学习2 —— head.S中的段页表的建立(2023-06-20)
blo 1b
47
48 /*
49 * Map our RAM from the start to the end of the kernel .bss......
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port linux 2.6.11.7 kernel to s3c2410(SMDK2410)(2023-05-10)
linefor example: noinitrd root=/dev/mtdblock3 init=/linuxrc console=ttySAC0,115200 mac=00:0e......
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使用Busybox制作CRAMFS文件系统成功(2024-08-30)
for the old /etc/mtab file”2个选项应该选中。(4) 在Init Utilities选项中,“Support reading an inittab file”应该选中,这样......
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U-Boot移植(14)解决saveenv不能保存环境变量(2023-08-28)
|
CFG_CMD_CACHE |
/* Start: by www.100ask.net......
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S3C6410之uboot回炉再造(1)start.S - SVC模式设置(2024-09-03)
* Startup Code (reset vector)
5 *
6 * do important init only if we don't start from memory!
7......
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u-boot之start_armboot函数分析(2024-08-29)
*/
{
ulong start;
ulong size;
} bi_dram[CONFIG_NR_DRAM_BANKS];//sdram的起......
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不用串口,如何打印STM32单片机log(2024-04-30)
打开ST-LINK菜单下的Printf via SWO viewer,然后按start:
在log结构体中添加SWO的操作函数集:
typedef struct
{
u8 (*init......
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mini2440编译2.6.39.4内核(2024-06-25)
line is: "noinitrd root=/dev/mtdblock3 init=/linuxrc console=ttySAC0"
MACH_TYPE = 1999
NOW......
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u-boot移植(十)---代码修改---支持nor flash(2023-07-03)
/* update start of FLASH memory */
30 /* CONFIG_SYS_FLASH_BASE 在 include/configs/jz2440.h中有......
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AT89C51单片机频率计的C源程序设计(2023-06-20)
=P1^3;
sbit kx=P1^4;
sbit A0=P3^6;
sbit A1=P3^7;
bit start;
uchar code tab1[]=“fre......
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基于STM32点亮LED灯(2023-08-15)
code */
*(.eh_frame)
KEEP (*(.init))
KEEP (*(.fini))
. = ALIGN(4);
_etext......
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init_machine 在Kernel中被调用的过程(2023-06-25)
,
#define MACHINE_END
};
启动时:
start_kernel ----- init/main.c
---->......
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基于RT-Thread的RoboMaster电控框架(三)(2024-01-11)
@param reg Start register address
@param buffer Buffer of read data
@param len The number of read......
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u-boot移植总结(四)u-boot-2010.09框架分析(2024-07-24)
;bd->bi_dram[0].start= PHYS_SDRAM_1;
gd->bd->bi_dram[0].size= PHYS_SDRAM_1_SIZE......
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s3c2440裸机-电阻触摸屏编程(4.isr设计_4.2支持长按和滑动)(2023-07-21)
();
}
}
}
举个列子:
我们想要用timer来进行进行流水灯实验,那么假如点灯函数为:
Isr_timer_led(){}
那么则只需要在led init的时候进行调用register_timer......
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s3c2440裸机-电阻触摸屏-4.2-isr设计_支持长按和滑动(2024-07-03)
行进行流水灯实验,那么假如点灯函数为:
Isr_timer_led(){}
那么则只需要在led init的时候进行调用register_timer(“led”, Isr_timer_led), 那么......
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串口0作为调试端口,怎么改变为接收数据接口(2023-05-23)
rootfstype=yaffs2 init=/init console=ttySAC0,115200gatemask=192.168.0.1serverip=192.168.1.100ipaddr......
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FreeRTOS任务源码分析以及程序堆栈与任务堆栈的关系(2024-07-10)
-emption priority */
4 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
5
6 /* Init task */
7......
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Linux内核源码阅读记录一之分析存储在不同段中的函数调用过程(2024-08-19)
看到在__initcall_start与__initcall_end之间又被分成了许多段:从*(.initcall0.init) ~*(.initcall7s.init)。
1 .init......
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STM32G0开发笔记:使用FreeRTOS系统(2023-06-27)
(STK_CSR_CLKSOURCE_AHB);
7 systick_set_reload(64*1000);
8
9 systick_interrupt_enable();
10
11 /* Start......
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