Commit 9227d35f authored by julien.delange's avatar julien.delange
Browse files

begin implementation of linux serial driver



git-svn-id: https://tecsw.estec.esa.int/svn/taste/trunk/po-hi-c@560 129961e7-ef38-4bb5-a8f7-c9a525a55882
parent a3de00b7
......@@ -10,17 +10,102 @@
#ifdef __PO_HI_NEED_DRIVER_SERIAL_LINUX
#include <stdio.h>
#define __PO_HI_DRIVER_SERIAL_LINUX_DEVICE "/dev/ttyS0"
#define __PO_HI_DRIVER_SERIAL_LINUX_BAUDRATE B38400
#include <po_hi_debug.h>
/* po-hi-c related files */
#include <termios.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <strings.h>
/* Linux-specific files */
int po_hi_c_driver_serial_fd;
void __po_hi_c_driver_serial_linux_poller (void)
{
printf ("Hello, i'm the serial linux poller !\n");
__DEBUGMSG ("Hello, i'm the serial linux poller !\n");
}
void __po_hi_c_driver_serial_linux_init (void)
{
printf ("Hello, i'm the serial driver, i'm initializing the whole thing\n");
__DEBUGMSG ("[LINUX SERIAL] Init\n");
struct termios oldtio,newtio;
po_hi_c_driver_serial_fd = open(__PO_HI_DRIVER_SERIAL_LINUX_DEVICE, O_RDWR | O_NOCTTY | O_NONBLOCK);
if (po_hi_c_driver_serial_fd < 0)
{
__DEBUGMSG ("[LINUX SERIAL] Error while opening device %s\n", __PO_HI_DRIVER_SERIAL_LINUX_DEVICE);
}
tcgetattr (po_hi_c_driver_serial_fd, &oldtio); /* save current serial port settings */
bzero (&newtio, sizeof(newtio)); /* clear struct for new port settings */
/*
* BAUDRATE: Set bps rate. You could also use cfsetispeed and cfsetospeed.
* CRTSCTS : output hardware flow control (only used if the cable has
* all necessary lines. See sect. 7 of Serial-HOWTO)
* CS8 : 8n1 (8bit,no parity,1 stopbit)
* CLOCAL : local connection, no modem contol
* CREAD : enable receiving characters
*/
newtio.c_cflag = __PO_HI_DRIVER_SERIAL_LINUX_BAUDRATE | CRTSCTS | CS8 | CLOCAL | CREAD;
/*
* IGNPAR : ignore bytes with parity errors
* ICRNL : map CR to NL (otherwise a CR input on the other computer
* will not terminate input) otherwise make device raw
* (no other input processing)
*/
newtio.c_iflag = IGNPAR | ICRNL;
/*
* Raw output.
*/
newtio.c_oflag = 0;
/*
* ICANON : enable canonical input
* disable all echo functionality, and don't send signals to calling program
*/
newtio.c_lflag = ICANON;
/*
* Initialize all control characters
* default values can be found in /usr/include/termios.h, and are given
* in the comments, but we don't need them here.
*/
newtio.c_cc[VINTR] = 0; /* Ctrl-c */
newtio.c_cc[VQUIT] = 0; /* Ctrl-\ */
newtio.c_cc[VERASE] = 0; /* del */
newtio.c_cc[VKILL] = 0; /* @ */
newtio.c_cc[VEOF] = 4; /* Ctrl-d */
newtio.c_cc[VTIME] = 0; /* inter-character timer unused */
newtio.c_cc[VMIN] = 1; /* blocking read until 1 character arrives */
newtio.c_cc[VSWTC] = 0; /* '\0' */
newtio.c_cc[VSTART] = 0; /* Ctrl-q */
newtio.c_cc[VSTOP] = 0; /* Ctrl-s */
newtio.c_cc[VSUSP] = 0; /* Ctrl-z */
newtio.c_cc[VEOL] = 0; /* '\0' */
newtio.c_cc[VREPRINT] = 0; /* Ctrl-r */
newtio.c_cc[VDISCARD] = 0; /* Ctrl-u */
newtio.c_cc[VWERASE] = 0; /* Ctrl-w */
newtio.c_cc[VLNEXT] = 0; /* Ctrl-v */
newtio.c_cc[VEOL2] = 0; /* '\0' */
/*
* clean the serial line and activate the settings for the port
*/
tcflush (po_hi_c_driver_serial_fd, TCIFLUSH);
tcsetattr (po_hi_c_driver_serial_fd, TCSANOW, &newtio);
__DEBUGMSG ("[LINUX SERIAL] End of init\n");
}
int __po_hi_c_driver_serial_linux_sender (__po_hi_task_id task, __po_hi_port_t port)
......
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