[kernel] enable RT_DEBUG_DEVICE by default and move weak rt_hw_dealy_us in kservice.c

1 files changed, 7 insertions, 0 deletions

diff --git a/src/kservice.c b/src/kservice.c
index 3c4e652c3f..ff9d3c9cef 100644
--- a/src/kservice.c
+++ b/src/kservice.c
@@ -45,6 +45,13 @@ static volatile int __rt_errno;
 static rt_device_t _console_device = RT_NULL;
 #endif
 
+RT_WEAK void rt_hw_us_delay(rt_uint32_t us)
+{
+    (void) us;
+    RT_DEBUG_LOG(RT_DEBUG_DEVICE, ("rt_hw_us_delay() doesn't support for this board."
+        "Please consider implementing rt_hw_us_delay() in another file."));
+}
+
 /**
  * This function gets the global errno for the current thread.
  *