Add basic change for v1453

Change-Id: I9497a61bbc3717f66413794a4e7dee0347c0bc33
diff --git a/mbtk/include/ql_v2/ql_adc.h b/mbtk/include/ql_v2/ql_adc.h
new file mode 100755
index 0000000..36136d0
--- /dev/null
+++ b/mbtk/include/ql_v2/ql_adc.h
@@ -0,0 +1,70 @@
+/**  
+  @file
+  ql_adc.h
+
+  @brief
+  This file provides the definitions for adc, and declares the 
+  API functions.
+
+*/
+/*============================================================================
+  Copyright (c) 2017 Quectel Wireless Solution, Co., Ltd.  All Rights Reserved.
+  Quectel Wireless Solution Proprietary and Confidential.
+ =============================================================================*/
+/*===========================================================================
+
+                        EDIT HISTORY FOR MODULE
+
+This section contains comments describing changes made to the module.
+Notice that changes are listed in reverse chronological order.
+
+
+WHEN        WHO            WHAT, WHERE, WHY
+----------  ------------   ----------------------------------------------------
+10/12/2021  larry          Code  normalization
+=============================================================================*/
+
+#ifndef _QL_ADC_H_
+#define _QL_ADC_H_
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+      ADC channel  enum
+*/
+typedef enum  ADC_CHANNEL_ENUM{
+    QADC_NONE = 0,			/** Invalid  channel*/
+    ADC0 = 1,				/** ADC0 channel  */
+    ADC1 = 2,				/** ADC1 channel  */
+    ADC2 = 3,				/** ADC2 channel  */
+    QADC_END				/** Invalid  channel*/
+}ADC_CHANNEL_E;
+
+/*========================================================================
+  FUNCTION:  ql_adc_show
+=========================================================================*/
+/** @brief 
+    This function retrieves the ADC voltage value with the specified 
+    ADC channel.
+    Support input vol value:
+    ADC0 : 0V-VBAT_BB
+    ADC1 : 0V-VBAT_BB
+
+    @param[in] qadc, adc channel definitions, one value of ADC_CHANNEL_E.
+
+    @return
+    adc value(mv) on success
+    on failure, the return value is -1;
+*/
+/*=======================================================================*/
+int ql_adc_show(ADC_CHANNEL_E qadc);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif