From 2ce73825347680c8f262a7e7dbc16c79e86acb9f Mon Sep 17 00:00:00 2001
From: bernard <bernard.xiong@rt-thread.com>
Date: Tue, 31 Jan 2017 13:18:20 +0800
Subject: [PATCH] [Kernel] Add rt_kputs routine.

---
 include/rtthread.h |  2 ++
 src/kservice.c     | 25 +++++++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/include/rtthread.h b/include/rtthread.h
index 4091e538f8..b8809474f6 100644
--- a/include/rtthread.h
+++ b/include/rtthread.h
@@ -488,8 +488,10 @@ void rt_components_board_init(void);
  */
 #ifndef RT_USING_CONSOLE
 #define rt_kprintf(...)
+#define rt_kputs(str)
 #else
 void rt_kprintf(const char *fmt, ...);
+void rt_kputs(const char *str);
 #endif
 rt_int32_t rt_vsprintf(char *dest, const char *format, va_list arg_ptr);
 rt_int32_t rt_vsnprintf(char *buf, rt_size_t size, const char *fmt, va_list args);
diff --git a/src/kservice.c b/src/kservice.c
index 614399e1e0..10fcfb0cf9 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -1107,6 +1107,31 @@ WEAK void rt_hw_console_output(const char *str)
 }
 RTM_EXPORT(rt_hw_console_output);
 
+/**
+ * This function will put string to the console.
+ *
+ * @param str the string output to the console.
+ */
+void rt_kputs(const char *str)
+{
+#ifdef RT_USING_DEVICE
+    if (_console_device == RT_NULL)
+    {
+        rt_hw_console_output(str);
+    }
+    else
+    {
+        rt_uint16_t old_flag = _console_device->open_flag;
+
+        _console_device->open_flag |= RT_DEVICE_FLAG_STREAM;
+        rt_device_write(_console_device, 0, str, rt_strlen(str));
+        _console_device->open_flag = old_flag;
+    }
+#else
+    rt_hw_console_output(str);
+#endif
+}
+
 /**
  * This function will print a formatted string on system console
  *
-- 
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