[libc] Add libc_stdio_get_console .

2 files changed, 8 insertions, 0 deletions

diff --git a/components/libc/compilers/newlib/libc.h b/components/libc/compilers/newlib/libc.h
index 7cab52a11f..d077de9656 100644
--- a/components/libc/compilers/newlib/libc.h
+++ b/components/libc/compilers/newlib/libc.h
@@ -38,6 +38,7 @@
 
 int libc_system_init(void);
 int libc_stdio_set_console(const char* device_name, int mode);
+int libc_stdio_get_console(void);
 
 /* some time related function */
 int libc_set_time(const struct timespec *time);
diff --git a/components/libc/compilers/newlib/stdio.c b/components/libc/compilers/newlib/stdio.c
index 276e68050c..f28383818d 100644
--- a/components/libc/compilers/newlib/stdio.c
+++ b/components/libc/compilers/newlib/stdio.c
@@ -83,3 +83,10 @@ int libc_stdio_set_console(const char* device_name, int mode)
 
     return fileno(std_console);
 }
+
+int libc_stdio_get_console(void) {
+    if (std_console)
+        return fileno(std_console);
+    else
+        return -1;
+}