From 6dba016a562799cb7c84ce055bc6399b8037f893 Mon Sep 17 00:00:00 2001
From: Damien George
Date: Mon, 14 Apr 2014 01:45:24 +0100
Subject: stmhal: Add pyb.wfi() function (calls __WFI).

---
 stmhal/modpyb.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'stmhal/modpyb.c')

diff --git a/stmhal/modpyb.c b/stmhal/modpyb.c
index c564a0f19..288008108 100644
--- a/stmhal/modpyb.c
+++ b/stmhal/modpyb.c
@@ -132,6 +132,13 @@ STATIC mp_obj_t pyb_udelay(mp_obj_t usec) {
 
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_udelay_obj, pyb_udelay);
 
+STATIC mp_obj_t pyb_wfi(void) {
+    __WFI();
+    return mp_const_none;
+}
+
+MP_DEFINE_CONST_FUN_OBJ_0(pyb_wfi_obj, pyb_wfi);
+
 #if 0
 STATIC void SYSCLKConfig_STOP(void) {
     /* After wake-up from STOP reconfigure the system clock */
@@ -221,6 +228,7 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR_gc), (mp_obj_t)&pyb_gc_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_repl_info), (mp_obj_t)&pyb_set_repl_info_obj },
 
+    { MP_OBJ_NEW_QSTR(MP_QSTR_wfi), (mp_obj_t)&pyb_wfi_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_stop), (mp_obj_t)&pyb_stop_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_standby), (mp_obj_t)&pyb_standby_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_source_dir), (mp_obj_t)&pyb_source_dir_obj },
-- 
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