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#77: added custom baudrate support for FreeBSD

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This commit is contained in:
Joe Merten
2017-12-31 07:32:23 +01:00
parent 78abf75112
commit b78410aa04
4 changed files with 43 additions and 47 deletions
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40
custbaud_bsd.c
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@ -1,11 +1,11 @@
/*
* custbaud_osx.c
* custbaud_bsd.c
*
* Custom baud rate support for OSX.
* Custom baud rate support for BSD and macOS.
*
* by Joe Merten (https://github.com/Joe-Merten www.jme.de)
*
* ATTENTION: OSX specific stuff!
* ATTENTION: BSD and macOS specific stuff!
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
@ -35,28 +35,28 @@
* looks that this is a bug or limitation in OSX and/or Ftdi driver.
* Trying with PL2303 (driver version PL2303_MacOSX_1.6.1_20160309.zip),
* baudrates up to 6MBaud were accepted.
* - Have not tested with more recent macOS or Ftdi driver until now.
*/
#if defined(__APPLE__) && defined(USE_CUSTOM_BAUD)
/* Note that this code might also work with OpenBSD, NetBSD et cetera, but I have not tested.
* That's why I only check for `defined (__FreeBSD__)` here.
*/
#if (defined (__FreeBSD__) || defined(__APPLE__)) && defined(USE_CUSTOM_BAUD)
#include "custbaud_osx.h"
#include "custbaud_bsd.h"
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <sys/ioctl.h>
#ifdef __APPLE__
#include <IOKit/serial/ioss.h>
#endif
#include "term.h"
/***************************************************************************/
/* Need to undef tcsetattr to get access to the original tcsetattr()
* function inside our module.
*/
#undef tcsetattr
/***************************************************************************/
/* As we can see in OSX termios.h all the baudrate constants are transparent,
/* As we can see in FreeBSD and macOS termios.h all the baudrate constants are transparent,
* like B115200=115200. There is no need for any integer <-> code translation.
* So we can pass any baudrate we want directly cfsetospeed() & co.
* So we can pass any baudrate we want directly to / from cfsetospeed() & co.
*/
int cfsetospeed_custom(struct termios *tiop, int speed) {
return cfsetospeed(tiop, speed);
@ -74,11 +74,18 @@ int cfgetispeed_custom(struct termios *tiop) {
return cfgetispeed(tiop);
}
#ifdef __APPLE__
/***************************************************************************/
/* Need to undef tcsetattr to get access to the original tcsetattr()
* function inside our module.
*/
#undef tcsetattr
/***************************************************************************/
/* The strategy of picocom's terminal handling library is to hold all the
* terminal settings (including baudrate) using termios struct.
* Problem on OSX is, that tcsetattr() will fail if termios contains an
* unusual baudrate (like e.g. 12345 of 12M), The official OSX way to apply
* Problem on macOS is, that tcsetattr() will fail if termios contains an
* unusual baudrate (like e.g. 12345 of 12M), The official macOS way to apply
* those baudrates is to use ioctl(IOSSIOSPEED) instead.
* Our workaround strategy is:
* - set the baudrate stored in termios back to a standard value (e.g. 9600)
@ -131,7 +138,8 @@ int tcsetattr_custom(int fd, int optional_actions, const struct termios *tiop) {
return 0;
}
#endif /*__APPLE__ */
/***************************************************************************/
#endif /* __APPLE__ && USE_CUSTOM_BAUD */
#endif /* FreeBSD || __APPLE__ && USE_CUSTOM_BAUD */