Search - c B - CodeBus

Search - c B - List

[Linux driver] syscall DL : 0: fprintf(stdout,"*** *** Help information for s*** *** *\n",APP_NAME) fprintf(stdout,"[Usage] s -[b:n:c:w:p:rsdh] <value>\n", APP_NAME) fprintf(stdout,"Version: s, Date: s, Author: Youri Zhang\n\n", VERSION, BUILD_DATE) fprintf(stdout,"\t-b : (Must use 1st)specify the GPIO Bank index\n\t\t==>GPA s index is 0, PB s index is 1 ... GPH s index is 7, GPJ s index is 8\n") fprintf(stdout,"\t-n : (Must use 2nd)specify the GPIO num in GPIO Bank\n") fprintf(stdout,"\t-c : Config the GPIO type(GPA use)\n\t\t==>OUTPUT: -c 0x00 , Special use: -c 0x01 \n") fprintf(stdout,"\t-c : Config the GPIO type(GPB--J use)\n\t\t==>INPUT: -c 0x00 , OUTPUT: -c 0x01 , Special use: -c 0x02 , Reserved: -c 0x03 \n") fprintf(stdout,"\t-w : Write value to GPIO pin s Data_reg\n") fprintf(stdout,"\t-p : Config value to GPIO pin s Pullup_reg\n\t\t==>Enable: -p 0x00 , Disable: -p 0x01 \n") -fprintf(stdout,"\t-s : Show the GPIO pin Config_reg s value\n") fprintf(stdout,"\t-d : Display the GPIO pin Pullup_reg s value\n") fprintf(stdout,"\t-h : This help information\n\n")
Date : 2025-12-21 Size : 3kb User : 李建永
[Linux driver] jinchegndechuangjian DL : 0: 编写一段源程序，使系统调用fork()创建两个子进程，当此程序运行时，在系统中有一个父进程和两个子进程活动。让每一个进程在屏幕上显示一个字符：父进程显示字符“a” 子进程分别显示字符“b”和字符“c”。试观察纪录屏幕上的显示结果，并分析原因。-Write a program, make the system call fork () to create two sub process, when running, the system is A process and the father of two sub process activities. Let each process shows a character on the screen: father process showed the character a the child process respectively show the characters B and the character c . The results of test observation showed the record on the screen, and analyze the reasons.
Date : 2025-12-21 Size : 4kb User : 付小杰