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apps/nshlib: Change the way SLCD is supported. Works better

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This commit is contained in:
Alan Carvalho de Assis 2018-11-30 18:05:18 -06:00 committed by Gregory Nutt
parent 2b8685b63f
commit 368f14852e
3 changed files with 35 additions and 15 deletions
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20
nshlib/Kconfig
View File

@ -886,6 +886,26 @@ config NSH_CONSOLE
NSH_USBCONSOLE and NSH_USBCONDEV - Sets up some other USB
serial device as the NSH console (not necessarily dev/console).
config NSH_SLCDCONSOLE
bool "Use a SLCD as console"
default n if !SLCD_CONSOLE
default y if SLCD_CONSOLE
depends on SLCD && NSH_CONSOLE
---help---
If defined, then the a configured SLCD display could be used as
output console to NuttShell (nsh>).
if NSH_SLCDCONSOLE
config NSH_SLCDCONDEV
string "SLCD console display device"
default "/dev/slcd0"
---help---
If NSH_SLCDCONSOLE is set to 'y', then NSH_SLCDCONDEV must
also be set to select the SLCD device used as output display.
endif # NSH_SLCDCONSOLE
config NSH_USBCONSOLE
bool "Use a USB serial console"
default n

9
nshlib/nsh.h
View File

@ -293,15 +293,16 @@
#undef HAVE_SLCD_CONSOLE
/* Check if SLCD is configured as alternative console */
/* Check if SLCD is configured as console */
#if defined(CONFIG_SLCD) && defined(CONFIG_NSH_ALTCONDEV)
#if defined(CONFIG_SLCD) && defined(CONFIG_NSH_SLCDCONSOLE)
# define HAVE_SLCD_CONSOLE 1
# ifndef CONFIG_NSH_CONDEV
# define CONFIG_NSH_CONDEV "/dev/slcd0"
# ifndef CONFIG_NSH_SLCDCONDEV
# define CONFIG_NSH_SLCDCONDEV "/dev/slcd0"
# endif
#endif /* HAVE_SLCD_CONSOLE */
/* USB trace settings */

21
nshlib/nsh_slcd.c
View File

@ -70,19 +70,21 @@ static int nsh_clone_console(FAR struct console_stdio_s *pstate)
/* Close stdin */
(void)close(0);
(void)fclose(stdout);
(void)fclose(stderr);
/* Open the console */
fd = open("/dev/console", O_RDONLY);
fd = open(CONFIG_NSH_SLCDCONDEV, O_WRONLY);
if (fd < 0)
{
return -ENODEV;
}
/* Associate /dev/console as stdin */
/* Associate /dev/slcd0 to stdout/stderr */
(void)dup2(fd, 0);
(void)dup2(fd, 1);
(void)dup2(fd, 2);
/* Close the console device that we just opened */
@ -91,13 +93,8 @@ static int nsh_clone_console(FAR struct console_stdio_s *pstate)
close(fd);
}
/* Use /dev/console as console input */
pstate->cn_confd = 0;
/* Create a standard C stream on the console device */
pstate->cn_constream = fdopen(pstate->cn_confd, "r+");
(void)fdopen(1, "a");
(void)fdopen(2, "a");
return OK;
}
@ -165,6 +162,8 @@ int nsh_consolemain(int argc, char *argv[])
/* Execute the session */
(void)nsh_session(pstate);
return OK;
}
#endif /* HAVE_SLCD_CONSOLE */