Outils pour utilisateurs
robotics:computing:linux_asynchronous_serial_programming_how_to
Différences
Cette page vous affiche les différences entre la révision choisie et la version actuelle de la page.
|
robotics:computing:linux_asynchronous_serial_programming_how_to [2011/02/02 17:24] gdo [Asynchronous serial I/O library] |
— (Version actuelle) | ||
|---|---|---|---|
| Ligne 1: | Ligne 1: | ||
| - | ====== Introduction ====== | ||
| - | This article describes asynchrous serial programming using signal handler. | ||
| - | |||
| - | == References == | ||
| - | * Serial Programming HOWTO : [[http://tldp.org/HOWTO/Serial-Programming-HOWTO/]] | ||
| - | |||
| - | == Hardware used : == | ||
| - | * A desktop PC. | ||
| - | * Roboard RB-100 : [[http://www.roboard.com/RB-100.htm]] | ||
| - | * Mini PCI VGA Card : [[http://www.icop.com.tw/pddetail.aspx?id=93&pid=4]] | ||
| - | * 4 Go micro SD card plugged in the built-in micro-SD card reader. | ||
| - | * An internet connection. | ||
| - | |||
| - | == Softwares : == | ||
| - | * Ubuntu 10.10 installed on both Roboard and desktop PC : [[http://www.ubuntu.com/]] | ||
| - | * Package **build-essential** already installed on your Ubuntu operating system. | ||
| - | |||
| - | ====== Asynchronous serial I/O library ====== | ||
| - | |||
| - | The following code is very simple. We will only be able to set the baudrate and the serial port device when initializing the serial port configuration. Everything else is hard coded, supposing we use 8 bits of data, 1 stop bit and no parity check. | ||
| - | Then it results in a very simple header file **serialCom.h** : | ||
| - | <code>#ifndef _SERIALCOM_H_ | ||
| - | #define _SERIALCOM_H_ | ||
| - | |||
| - | #ifdef __cplusplus | ||
| - | extern "C" | ||
| - | { | ||
| - | #endif | ||
| - | |||
| - | #include <termios.h> | ||
| - | |||
| - | /* Controls : CS8 = 8 bits | ||
| - | * CREAD = Enable reading */ | ||
| - | #define SERIAL_CONTROL (CS8 | CREAD); | ||
| - | |||
| - | /* Input : IGNPAR = No parity check */ | ||
| - | #define SERIAL_INPUT IGNPAR; | ||
| - | |||
| - | /* Handler type definition */ | ||
| - | typedef void (*serial_handler) (int status); | ||
| - | |||
| - | /* Serial port initialization function */ | ||
| - | int serialConfiguration( serial_handler, const char* device, tcflag_t baudrate); | ||
| - | |||
| - | #ifdef __cplusplus | ||
| - | } | ||
| - | #endif | ||
| - | |||
| - | #endif | ||
| - | </code> | ||
robotics/computing/linux_asynchronous_serial_programming_how_to.1296663845.txt.gz · Dernière modification: 2012/09/20 10:52 (modification externe)
Outils de la page
Sauf mention contraire, le contenu de ce wiki est placé sous les termes de la licence suivante : GNU Free Documentation License 1.3
