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[posix] fix setting non-standard baudrate on mac (#9090)

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tcsetattr() fails on mac OS when a non-standard baudrate,
such as 1000000, is used. There is a separate ioct() that
accepts non-standard baudrates though.
This commit is contained in:
Damian Królik
2023-05-30 19:25:44 -07:00
committed by GitHub
parent f05f222b44
commit 74c5e4ba01
1 changed files with 20 additions and 1 deletions
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src/posix/platform/hdlc_interface.cpp
+20 -1
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@@ -49,6 +49,7 @@
#endif
#include <stdarg.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/time.h>
@@ -116,6 +117,10 @@
#define B4000000 4000000
#endif
#ifndef IOSSIOSPEED
#define IOSSIOSPEED 0x80045402
#endif
#endif // __APPLE__
#if OPENTHREAD_POSIX_CONFIG_RCP_BUS == OT_POSIX_RCP_BUS_UART
@@ -577,7 +582,21 @@ int HdlcInterface::OpenFile(const Url::Url &aRadioUrl)
}
VerifyOrExit((rval = cfsetspeed(&tios, static_cast<speed_t>(speed))) == 0, perror("cfsetspeed"));
VerifyOrExit((rval = tcsetattr(fd, TCSANOW, &tios)) == 0, perror("tcsetattr"));
rval = tcsetattr(fd, TCSANOW, &tios);
#ifdef __APPLE__
if (rval)
{
struct termios orig_tios;
VerifyOrExit((rval = tcgetattr(fd, &orig_tios)) == 0, perror("tcgetattr"));
VerifyOrExit((rval = cfsetispeed(&tios, cfgetispeed(&orig_tios))) == 0, perror("cfsetispeed"));
VerifyOrExit((rval = cfsetospeed(&tios, cfgetospeed(&orig_tios))) == 0, perror("cfsetospeed"));
VerifyOrExit((rval = tcsetattr(fd, TCSANOW, &tios)) == 0, perror("tcsetattr"));
VerifyOrExit((rval = ioctl(fd, IOSSIOSPEED, &speed)) == 0, perror("ioctl IOSSIOSPEED"));
}
#else // __APPLE__
VerifyOrExit(rval == 0, perror("tcsetattr"));
#endif // __APPLE__
VerifyOrExit((rval = tcflush(fd, TCIOFLUSH)) == 0);
}