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in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
The following commit(s) were added to refs/heads/master by this push:
new da3fb9c arch: xtensa: Call the waiti instruction in up_idle()
da3fb9c is described below
commit da3fb9c94f8dc57c2a89d0aa00ae88650b98337b
Author: Masayuki Ishikawa <[email protected]>
AuthorDate: Fri Mar 6 13:00:37 2020 +0900
arch: xtensa: Call the waiti instruction in up_idle()
Signed-off-by: Masayuki Ishikawa <[email protected]>
---
arch/xtensa/src/common/xtensa_idle.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/xtensa/src/common/xtensa_idle.c
b/arch/xtensa/src/common/xtensa_idle.c
index f6e2c3f..9ac16d4 100644
--- a/arch/xtensa/src/common/xtensa_idle.c
+++ b/arch/xtensa/src/common/xtensa_idle.c
@@ -92,4 +92,11 @@ void up_idle(void)
leave_critical_section(flags);
#endif
#endif
+
+ /* This would be an appropriate place to put some MCU-specific logic to
+ * sleep in a reduced power mode until an interrupt occurs to save power
+ */
+
+ asm("waiti 0");
+
}
