diff --git a/bsp/bluetrum/ab32vg1-ab-prougen/board/Kconfig b/bsp/bluetrum/ab32vg1-ab-prougen/board/Kconfig
index 01752dad9428b7b74af918f80b0d1db0549c2c86..decdf156d7787954ceb54263632c07c3d421e649 100644
--- a/bsp/bluetrum/ab32vg1-ab-prougen/board/Kconfig
+++ b/bsp/bluetrum/ab32vg1-ab-prougen/board/Kconfig
@@ -167,11 +167,16 @@ menu "On-chip Peripheral Drivers"
                 default n
         endif
 
-    config BSP_USING_ONCHIP_RTC
+    menuconfig BSP_USING_ONCHIP_RTC
         bool "Enable RTC"
         select RT_USING_RTC
         select RT_USING_LIBC
         default n
+        if BSP_USING_ONCHIP_RTC
+            config RTC_USING_INTERNAL_CLK
+            bool "Using internal clock RTC"
+            default y
+        endif
 
     menuconfig BSP_USING_ADC
         bool "Enable ADC"
diff --git a/bsp/bluetrum/ab32vg1-ab-prougen/rtconfig.py b/bsp/bluetrum/ab32vg1-ab-prougen/rtconfig.py
index b70a0dc654e965785938950ca8808da2cae6ff8a..0642f6429a3953b3d7080ad5776001c4fb370d33 100644
--- a/bsp/bluetrum/ab32vg1-ab-prougen/rtconfig.py
+++ b/bsp/bluetrum/ab32vg1-ab-prougen/rtconfig.py
@@ -41,7 +41,7 @@ if PLATFORM == 'gcc':
     # DEVICE  = ' -mcmodel=medany -march=rv32imc -mabi=ilp32 -fsingle-precision-constant'
     DEVICE  = ' -mcmodel=medany -march=rv32imc -mabi=ilp32'
     # CFLAGS  = DEVICE + ' -fno-common -ffunction-sections -fdata-sections -fstrict-volatile-bitfields'
-    CFLAGS = DEVICE
+    CFLAGS = DEVICE + ' -D_USE_LONG_TIME_T'
     AFLAGS  = ' -c' + DEVICE + ' -x assembler-with-cpp'
     LFLAGS  = DEVICE + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread.map,-cref,-u,_start -T link.lds'
     CPATH   = ''
diff --git a/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c b/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c
index 99483cb5442f21c6f06a8e8122f446bcb0096084..4f462e90406ad6503df78e12e36743ca0b2bd95a 100644
--- a/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c
+++ b/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c
@@ -6,6 +6,7 @@
  * Change Logs:
  * Date           Author            Notes
  * 2021-01-28     greedyhao         first version
+ * 2021-03-19     iysheng           modify just set time first power up
  */
 
 #include "board.h"
@@ -95,30 +96,44 @@ uint8_t irtc_sfr_read(uint32_t cmd)
     IRTC_EXIT_CRITICAL();
 }
 
+static void _init_rtc_clock(void)
+{
+    uint8_t rtccon0;
+    uint8_t rtccon2;
+
+    rtccon0 = irtc_sfr_read(RTCCON0_CMD);
+    rtccon2 = irtc_sfr_read(RTCCON2_CMD);
+#ifdef RTC_USING_INTERNAL_CLK
+    rtccon0 &= ~RTC_CON0_XOSC32K_ENABLE;
+    rtccon0 |= RTC_CON0_INTERNAL_32K;
+    rtccon2 | RTC_CON2_32K_SELECT;
+#else
+    rtccon0 |= RTC_CON0_XOSC32K_ENABLE;
+    rtccon0 &= ~RTC_CON0_INTERNAL_32K;
+    rtccon2 & ~RTC_CON2_32K_SELECT;
+#endif
+    irtc_sfr_write(RTCCON0_CMD, rtccon0);
+    irtc_sfr_write(RTCCON2_CMD, rtccon2);
+}
+
 void hal_rtc_init(void)
 {
     time_t sec = 0;
     struct tm tm_new = {0};
+    uint8_t temp;
 
-    uint8_t temp = irtc_sfr_read(RTCCON0_CMD);
-    temp &= ~RTC_CON0_XOSC32K_ENABLE;
-    temp |= RTC_CON0_EXTERNAL_32K;
-    irtc_sfr_write(RTCCON0_CMD, temp);
-    temp = irtc_sfr_read(RTCCON2_CMD);
-    irtc_sfr_write(RTCCON2_CMD, temp | RTC_CON2_32K_SELECT);
-
+    _init_rtc_clock();
     temp = irtc_sfr_read(RTCCON0_CMD);
-    if (temp & BIT(7)) {
-        temp &= ~BIT(7);
+    if (temp & RTC_CON0_PWRUP_FIRST) {
+        temp &= ~RTC_CON0_PWRUP_FIRST;
         irtc_sfr_write(RTCCON0_CMD, temp); /* First power on */
-    }
+        tm_new.tm_mday = 29;
+        tm_new.tm_mon  = 1 - 1;
+        tm_new.tm_year = 2021 - 1900;
+        sec = timegm(&tm_new);
 
-    tm_new.tm_mday = 29;
-    tm_new.tm_mon  = 1 - 1;
-    tm_new.tm_year = 2021 - 1900;
-    sec = timegm(&tm_new);
-
-    irtc_time_write(RTCCNT_CMD, sec);
+        irtc_time_write(RTCCNT_CMD, sec);
+    }
 }
 /************** HAL End *******************/
 
diff --git a/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/ab32vg1_hal_rtc.h b/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/ab32vg1_hal_rtc.h
index 6c128567b59168a140f62788bf65b1cc7206cf06..483f3e3f42c1a439744f4fbbe7cb7896cd45f909 100644
--- a/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/ab32vg1_hal_rtc.h
+++ b/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/ab32vg1_hal_rtc.h
@@ -34,7 +34,7 @@ enum
 
 // RTCCON0
 #define RTC_CON0_PWRUP_FIRST                (0x01u << 7)    /*!< RTC first power up flag            */
-#define RTC_CON0_EXTERNAL_32K               (0x01u << 6)    /*!< External 32K select                */
+#define RTC_CON0_INTERNAL_32K               (0x01u << 6)    /*!< Internal 32K select                */
 #define RTC_CON0_VDD_ENABLE                 (0x01u << 5)    /*!< RTC VDD12 enable                   */
 #define RTC_CON0_BG_ENABLE                  (0x01u << 4)    /*!< BG enable                          */
 #define RTC_CON0_LVD_OUTPUT_ENABLE          (0x01u << 3)    /*!< LVD output enable                  */