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FreeBSD: Fixed initial sw-side state of RTS and DTR

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This commit is contained in:
Joe Merten
2018-01-02 15:58:58 +01:00
parent cc8d142e2c
commit de631d4c58
2 changed files with 13 additions and 1 deletions
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4
lowerrts.md
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@ -24,6 +24,10 @@ the port is used without hardware handshake.
This behavior cannot be avoided without patching the linux kernel
driver (see also http://stackoverflow.com/a/21753723/2880699).
Note, that in FreeBSD the RTS handshake line is not been changed upon
`open()` but staying left in the state whatever it was before. Tested
with FreeBSD 11, both Ftdi and Prolific adapters, picocom 3.1.
Work-around using the user-space API
------------------------------------

10
picocom.c
View File

@ -252,7 +252,7 @@ int tty_fd = -1;
int log_fd = -1;
/* RTS and DTR are usually raised upon opening the serial port (at
least as tested on Linux, FreeBsd and macOS) */
least as tested on Linux and macOS, but FreeBSD behave different) */
int rts_up = 1;
int dtr_up = 1;
@ -1197,6 +1197,8 @@ do_command (unsigned char c)
fd_printf(STO, "\r\n*** pulse DTR ***\r\n");
if ( term_pulse_dtr(tty_fd) < 0 )
fd_printf(STO, "*** FAILED\r\n");
else
dtr_up = 1;
break;
case KEY_TOG_DTR:
if ( dtr_up )
@ -2007,6 +2009,12 @@ main (int argc, char *argv[])
fatal("failed to config port: %s",
term_strerror(term_errno, errno));
r = term_get_mctl(tty_fd);
if ( r >= 0 && r != MCTL_UNAVAIL ) {
rts_up = (r & MCTL_RTS) != 0;
dtr_up = (r & MCTL_DTR) != 0;
}
set_tty_write_sz(term_get_baudrate(tty_fd, NULL));
if ( ! opts.exit ) {