Index: yc_vbatCheck.c
===================================================================
--- /YC3121_SDK/fw/sdk/yc_vbatCheck.c	(revision 813)
+++ /YC3121_SDK/fw/sdk/yc_vbatCheck.c	(working copy)
@@ -25,7 +25,7 @@
 
     val_lpm_gpio_wkhi = lpm_read(LPM_GPIO_WKHI); //f8414
     back_val_lpm_gpio_wkhi = val_lpm_gpio_wkhi;
-    val_lpm_gpio_wkhi &= (~(0x03<<21));
+    val_lpm_gpio_wkhi &= (~(0x07<<20));
     lpm_write(LPM_GPIO_WKHI,val_lpm_gpio_wkhi);
     #ifdef VBAT_DEBUG
     MyPrintf("f8414=%x\r\n",val_lpm_gpio_wkhi);