termios

I'm writing some serial code on a raspberry pi and switched to C99. When I did I started getting the error "error: ‘CRTSCTS’ undeclared (first use in this function)" $ c99 -M serial01.c | grep termios.h /usr/include/termios.h /usr/include/arm-linux-gnueabihf/bits/termios.h \ $ gcc -M serial01.c | grep termios.h /usr/include/termios.h /usr/include/arm-linux-gnueabihf/bits/termios.h \ using -M reveals 2 termios.h headers. the former does not contain a definition for CRTSCTS and the latter does. I assume the standard c89 is using the good one and c99 not but I'm not sure since the result of the

So I have the following code which basically just reads characters user inputs and prints them until 'q' is entered. #include<stdio.h> #include<stdlib.h> #include<unistd.h> #include<termios.h> int main(void) { char c; static struct termios oldtio, newtio; tcgetattr(0, &oldtio); newtio = oldtio; newtio.c_lflag &= ~ICANON; newtio.c_lflag &= ~ECHO; tcsetattr(0, TCSANOW, &newtio); printf("Give text: "); fflush(stdout); while (1) { read(0, &c, 1); printf("%c", c); fflush(stdout); if (c == 'q') { break; } } printf("\n"); tcsetattr(0, TCSANOW, &oldtio); return 0; } In the beginning of the main

I'm currently designing a CLI interface for linux, and for various reasons I am not able to use ncurses . I am using exclusively C++ and the Qt framework. Therefore, in order to have a user-friendly interface, I have to run this getch loop in a separate thread: https://stackoverflow.com/a/912796/3605689 Which basically means I have to implement all basic functionalities (such as backspace) by myself. I have already implemented command completion and command history(like when you press tab or uparrow/downarrow in linux), but I can't figure out how to implement leftarrow/rightarrow (aka seeking

I have a simple program written in C which uses termios to send a basic string to the Raspberry Pi UART and attempts to read and output the response. The Rx and Tx pins on the Raspberry Pi are connected with a jumper so whatever is sent should be immediately received. Despite the program outputting that it successfully sent and received 5 characters for the chosen string ('Hello'), trying to print the contents of the buffer just produces one or two garbage characters. The program: #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include