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apps/examples/pty_test: Use of POLL must be optional. There are still a few character drivers that do not support it.

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This commit is contained in:
Gregory Nutt 2016-07-16 13:46:52 -06:00
parent 8a16e80cf3
commit 126592b85d
2 changed files with 23 additions and 3 deletions
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4
examples/pty_test/Kconfig
View file

@ -21,6 +21,10 @@ config EXAMPLES_PTYTEST_PROGNAME
This is the name of the program that will be use when the NSH ELF
program is installed.
config EXAMPLES_PTYTEST_POLL
bool "Test poll() with data transfers"
default n
config EXAMPLES_PTYTEST_SERIALDEV
string "Test serial device"
default"/dev/ttyS1"

22
examples/pty_test/pty_test.c
View file

@ -96,7 +96,9 @@ struct term_pair_s
static void serial_in(struct term_pair_s *tp)
{
#ifdef CONFIG_EXAMPLES_PTYTEST_POLL
struct pollfd fdp;
#endif
char buffer[16];
int ret;
@ -106,19 +108,23 @@ static void serial_in(struct term_pair_s *tp)
return;
}
#ifdef CONFIG_EXAMPLES_PTYTEST_POLL
fdp.fd = tp->fd_uart;
fdp.events = POLLIN;
#endif
/* Run forever */
for (;;)
{
#ifdef CONFIG_EXAMPLES_PTYTEST_POLL
ret = poll((struct pollfd *)&fdp, 1, POLL_TIMEOUT);
if (ret > 0)
{
if ((fdp.revents & POLLIN) != 0)
#endif
{
int len;
ssize_t len;
len = read(tp->fd_uart, buffer, 16);
if (len < 0)
@ -138,6 +144,7 @@ static void serial_in(struct term_pair_s *tp)
}
}
}
#ifdef CONFIG_EXAMPLES_PTYTEST_POLL
}
/* Timeout */
@ -154,6 +161,7 @@ static void serial_in(struct term_pair_s *tp)
fprintf(stderr, "ERROR: poll failed: %d\n", errno);
continue;
}
#endif
}
}
@ -167,7 +175,9 @@ static void serial_in(struct term_pair_s *tp)
static void serial_out(struct term_pair_s *tp)
{
#ifdef CONFIG_EXAMPLES_PTYTEST_POLL
struct pollfd fdp;
#endif
char buffer[16];
int ret;
@ -177,19 +187,23 @@ static void serial_out(struct term_pair_s *tp)
return;
}
#ifdef CONFIG_EXAMPLES_PTYTEST_POLL
fdp.fd = tp->fd_pty;
fdp.events = POLLIN;
#endif
/* Run forever */
for (;;)
{
#ifdef CONFIG_EXAMPLES_PTYTEST_POLL
ret = poll((struct pollfd *)&fdp, 1, POLL_TIMEOUT);
if (ret > 0)
{
if (fdp.revents & POLLIN)
if ((fdp.revents & POLLIN != 0))
#endif
{
int len;
ssize_t len;
len = read(tp->fd_pty, buffer, 16);
if (len < 0)
@ -209,6 +223,7 @@ static void serial_out(struct term_pair_s *tp)
}
}
}
#ifdef CONFIG_EXAMPLES_PTYTEST_POLL
}
/* Timeout */
@ -225,6 +240,7 @@ static void serial_out(struct term_pair_s *tp)
fprintf(stderr, "ERROR: poll failed: %d\n", errno);
continue;
}
#endif
}
}