Index: yc_vbatCheck.h
===================================================================
--- /YC3121_SDK/fw/sdk/yc_vbatCheck.h	(nonexistent)
+++ /YC3121_SDK/fw/sdk/yc_vbatCheck.h	(working copy)
@@ -0,0 +1,15 @@
+#ifndef __VBAT_CHECK_H__
+#define __VBAT_CHECK_H__
+#include "yc3121.h"
+#include "yc_lpm.h"
+
+/**
+ * @brief:纽扣功耗检测函数
+ *
+ * @param:none
+ *
+ * @retval:返回值bit1、bit2同时为1表示纽扣功耗异常
+ */
+uint8_t vbat_check(void);
+
+#endif
Index: yc_vbatCheck.c
===================================================================
--- /YC3121_SDK/fw/sdk/yc_vbatCheck.c	(nonexistent)
+++ /YC3121_SDK/fw/sdk/yc_vbatCheck.c	(working copy)
@@ -0,0 +1,55 @@
+#include "yc_vbatCheck.h"
+
+//#define VBAT_DEBUG
+
+uint8_t vbat_check(void)
+{
+    uint8_t ret = 0;
+    uint32_t back_val_lpm_ctrl=0;
+    uint32_t back_val_lpm_sensor = 0;
+    uint32_t back_val_lpm_gpio_wkhi = 0;
+
+
+    uint32_t val_lpm_ctrl=0;
+    uint32_t val_lpm_sensor = 0;
+    uint32_t val_lpm_gpio_wkhi = 0;
+    uint32_t val_lpm_status = 0;
+
+    val_lpm_ctrl = lpm_read(LPM_CTRL);           //f8400
+    back_val_lpm_ctrl  = val_lpm_ctrl;
+    val_lpm_ctrl |= (1<<5);
+    lpm_write(LPM_CTRL,val_lpm_ctrl);
+    #ifdef VBAT_DEBUG
+    MyPrintf("f8400=%x\r\n",val_lpm_ctrl);
+    #endif
+
+    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));
+    lpm_write(LPM_GPIO_WKHI,val_lpm_gpio_wkhi);
+    #ifdef VBAT_DEBUG
+    MyPrintf("f8414=%x\r\n",val_lpm_gpio_wkhi);
+    #endif
+
+    val_lpm_sensor = lpm_read(LPM_SENSOR);       //f8404
+    back_val_lpm_sensor = val_lpm_sensor;
+    val_lpm_sensor |= (0x06);
+    lpm_write(LPM_SENSOR,val_lpm_sensor);
+    #ifdef VBAT_DEBUG
+    MyPrintf("f8404=%x\r\n",val_lpm_sensor);
+    #endif
+    delay(10000);
+
+    val_lpm_status = lpm_read(LPM_STATUS);
+    #ifdef VBAT_DEBUG
+    MyPrintf("f8478=%x\r\n",val_lpm_status);
+    #endif
+    ret = ((val_lpm_status>>16) & 0x1f);
+
+
+    lpm_write(LPM_CTRL,     back_val_lpm_ctrl);
+    lpm_write(LPM_GPIO_WKHI,back_val_lpm_gpio_wkhi);
+    lpm_write(LPM_SENSOR,   back_val_lpm_sensor);
+
+    return ret;
+}
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