diff --git a/bsp/bluetrum/ab32vg1-ab-prougen/.config b/bsp/bluetrum/ab32vg1-ab-prougen/.config
index 898a04fc6bd480524422256616d4a687bd377e39..8c5f6b25238e0b457a8e01a3a3b7acb05cde2b3d 100644
--- a/bsp/bluetrum/ab32vg1-ab-prougen/.config
+++ b/bsp/bluetrum/ab32vg1-ab-prougen/.config
@@ -29,6 +29,7 @@ CONFIG_RT_TIMER_THREAD_STACK_SIZE=256
 #
 # CONFIG_RT_KSERVICE_USING_STDLIB is not set
 # CONFIG_RT_KSERVICE_USING_TINY_SIZE is not set
+# CONFIG_RT_USING_ASM_MEMCPY is not set
 CONFIG_RT_DEBUG=y
 # CONFIG_RT_DEBUG_COLOR is not set
 # CONFIG_RT_DEBUG_INIT_CONFIG is not set
@@ -74,6 +75,7 @@ CONFIG_RT_USING_DEVICE_OPS=y
 CONFIG_RT_USING_CONSOLE=y
 CONFIG_RT_CONSOLEBUF_SIZE=128
 CONFIG_RT_CONSOLE_DEVICE_NAME="uart0"
+# CONFIG_RT_PRINTF_LONGLONG is not set
 CONFIG_RT_VER_NUM=0x40004
 # CONFIG_RT_USING_CPU_FFS is not set
 # CONFIG_ARCH_CPU_STACK_GROWS_UPWARD is not set
@@ -162,7 +164,7 @@ CONFIG_RT_USING_PIN=y
 CONFIG_RT_USING_LIBC=y
 # CONFIG_RT_USING_PTHREADS is not set
 # CONFIG_RT_USING_MODULE is not set
-CONFIG_RT_LIBC_FIXED_TIMEZONE=8
+CONFIG_RT_LIBC_DEFAULT_TIMEZONE=8
 
 #
 # Network
@@ -568,6 +570,7 @@ CONFIG_RT_LIBC_FIXED_TIMEZONE=8
 #
 CONFIG_BSP_USING_UART=y
 CONFIG_BSP_USING_UART0=y
+CONFIG_BSP_UART0_FIFO_SIZE=10
 # CONFIG_BSP_USING_UART1 is not set
 # CONFIG_BSP_USING_UART2 is not set
 # CONFIG_BSP_USING_SDIO is not set
diff --git a/bsp/bluetrum/ab32vg1-ab-prougen/board/Kconfig b/bsp/bluetrum/ab32vg1-ab-prougen/board/Kconfig
index 22f6484f737a4f0c4b07739ebc9431ba33ababe8..fddd4efb56a74c3cc34dafcc8482d30b1323fa6d 100644
--- a/bsp/bluetrum/ab32vg1-ab-prougen/board/Kconfig
+++ b/bsp/bluetrum/ab32vg1-ab-prougen/board/Kconfig
@@ -1,5 +1,10 @@
 menu "Hardware Drivers Config"
 
+config SOC_AB32VG1
+    bool
+    select PKG_USING_BLUETRUM_SDK
+    default y
+
 menu "Onboard Peripheral Drivers"
 
     menuconfig BSP_USING_AUDIO
@@ -29,20 +34,40 @@ endmenu
 
 menu "On-chip Peripheral Drivers"
     menuconfig BSP_USING_UART
-		bool "Enable UART"
+        bool "Enable UART"
         if BSP_USING_UART
             config BSP_USING_UART0
                 bool "Enable UART0"
                 select RT_USING_SERIAL
                 default y
+            if BSP_USING_UART0
+                config BSP_UART0_FIFO_SIZE
+                    int "BSP_UART0_FIFO_SIZE"
+                    range 5 255
+                    default 10
+            endif
+
             config BSP_USING_UART1
                 bool "Enable UART1"
                 select RT_USING_SERIAL
                 default n
+            if BSP_USING_UART1
+                config BSP_UART1_FIFO_SIZE
+                    int "BSP_UART1_FIFO_SIZE"
+                    range 5 255
+                    default 10
+            endif
+
             config BSP_USING_UART2
                 bool "Enable UART2"
                 select RT_USING_SERIAL
                 default n
+            if BSP_USING_UART2
+                config BSP_UART2_FIFO_SIZE
+                    int "BSP_UART2_FIFO_SIZE"
+                    range 5 255
+                    default 10
+            endif
         endif
 
     config BSP_USING_SDIO
@@ -174,12 +199,12 @@ menu "On-chip Peripheral Drivers"
         default n
         if BSP_USING_ONCHIP_RTC
             config RTC_USING_INTERNAL_CLK
-            bool "Using internal clock RTC"
-            default y
+                bool "Using internal clock RTC"
+                default y
             config RTC_USING_1S_INT
-            bool "Using 1 second interrupt"
-            depends on RT_USING_ALARM
-            default n
+                bool "Using 1 second interrupt"
+                depends on RT_USING_ALARM
+                default n
         endif
 
     menuconfig BSP_USING_ADC
diff --git a/bsp/bluetrum/ab32vg1-ab-prougen/board/board.c b/bsp/bluetrum/ab32vg1-ab-prougen/board/board.c
index 4fc392d008bcf4530b882ac9ff3604c510afa7e4..f68ec1bba8b364f7f35d986f02aede3c4bea0917 100644
--- a/bsp/bluetrum/ab32vg1-ab-prougen/board/board.c
+++ b/bsp/bluetrum/ab32vg1-ab-prougen/board/board.c
@@ -21,6 +21,7 @@ void set_cpu_irq_comm(void (*irq_hook)(void));
 void load_cache();
 void os_cache_init(void);
 void sys_error_hook(uint8_t err_no);
+void huart_timer_isr(void);
 
 typedef void (*spiflash_init_func)(uint8_t sf_read, uint8_t dummy);
 
@@ -29,6 +30,7 @@ static struct rt_mutex mutex_cache = {0};
 extern volatile rt_uint8_t rt_interrupt_nest;
 extern uint32_t __heap_start, __heap_end;
 
+#ifdef RT_USING_CONSOLE
 void hal_printf(const char *fmt, ...)
 {
     rt_device_t console = rt_console_get_device();
@@ -64,6 +66,7 @@ void hal_printf(const char *fmt, ...)
 #endif
     va_end(args);
 }
+#endif
 
 RT_SECTION(".irq.timer")
 void timer0_isr(int vector, void *param)
@@ -71,6 +74,9 @@ void timer0_isr(int vector, void *param)
     rt_interrupt_enter();
     TMR0CPND = BIT(9);
     rt_tick_increase();
+#ifdef RT_USING_SERIAL
+    huart_timer_isr();
+#endif
     rt_interrupt_leave();
 }
 
@@ -206,8 +212,10 @@ void exception_isr(void)
     extern long list_thread(void);
     sys_error_hook(1);
 
+#ifdef RT_USING_CONSOLE
     rt_console_set_device(RT_NULL);
     rt_kprintf(stack_info, rt_thread_self()->sp, rt_thread_self()->name);
+#endif
 
     while(1);
 }
diff --git a/bsp/bluetrum/ab32vg1-ab-prougen/rtconfig.h b/bsp/bluetrum/ab32vg1-ab-prougen/rtconfig.h
index 4d37e2598b1afb267c554a6e3f4c86b9f577dd15..5d9271874624096fb7acc3ba805c20bf15795c09 100644
--- a/bsp/bluetrum/ab32vg1-ab-prougen/rtconfig.h
+++ b/bsp/bluetrum/ab32vg1-ab-prougen/rtconfig.h
@@ -91,7 +91,7 @@
 /* POSIX layer and C standard library */
 
 #define RT_USING_LIBC
-#define RT_LIBC_FIXED_TIMEZONE 8
+#define RT_LIBC_DEFAULT_TIMEZONE 8
 
 /* Network */
 
@@ -176,6 +176,7 @@
 
 #define BSP_USING_UART
 #define BSP_USING_UART0
+#define BSP_UART0_FIFO_SIZE 10
 
 /* Board extended module Drivers */
 
diff --git a/bsp/bluetrum/libraries/hal_drivers/SConscript b/bsp/bluetrum/libraries/hal_drivers/SConscript
index 628252c231989cc6b7c687800f68d25a3c6c4cbe..c36165963034f22a99689618cba3c217310f35bb 100644
--- a/bsp/bluetrum/libraries/hal_drivers/SConscript
+++ b/bsp/bluetrum/libraries/hal_drivers/SConscript
@@ -4,6 +4,7 @@ from building import *
 
 cwd     = GetCurrentDir()
 src     = []
+src    += ['drv_common.c']
 path    = [cwd]
 path   += [cwd + '/config']
 
diff --git a/bsp/bluetrum/libraries/hal_drivers/drv_common.c b/bsp/bluetrum/libraries/hal_drivers/drv_common.c
new file mode 100644
index 0000000000000000000000000000000000000000..75b3426010550ead5ef29f0c172362754a7ae302
--- /dev/null
+++ b/bsp/bluetrum/libraries/hal_drivers/drv_common.c
@@ -0,0 +1,80 @@
+#include "drv_common.h"
+
+#define DRV_THREAD_PRIORITY         18
+#define DRV_THREAD_STACK_SIZE       512
+#define DRV_THREAD_TIMESLICE        5
+
+enum {
+    MSG_UART0_IRQ,
+    MSG_UART1_IRQ,
+    MSG_UART2_IRQ,
+};
+
+static rt_thread_t drv_tid = RT_NULL;
+static rt_mq_t drv_mq = RT_NULL;
+
+void uart0_irq_process(void);
+void uart1_irq_process(void);
+
+RT_SECTION(".irq.uart")
+void uart0_irq_post(void)
+{
+    uint8_t mq_msg = MSG_UART0_IRQ;
+    rt_mq_send(drv_mq, &mq_msg, 1);
+}
+
+RT_SECTION(".irq.uart")
+void uart1_irq_post(void)
+{
+    uint8_t mq_msg = MSG_UART1_IRQ;
+    rt_mq_send(drv_mq, &mq_msg, 1);
+}
+
+RT_SECTION(".irq.uart")
+void uart2_irq_post(void)
+{
+    uint8_t mq_msg = MSG_UART2_IRQ;
+    rt_mq_send(drv_mq, &mq_msg, 1);
+}
+
+static void drv_thread_entry(void *parameter)
+{
+    uint8_t mq_msg = 0;
+    while (1) {
+        rt_mq_recv(drv_mq, &mq_msg, 1, RT_WAITING_FOREVER);
+        switch (mq_msg) {
+#ifdef BSP_USING_UART0
+            case MSG_UART0_IRQ:
+                uart0_irq_process();
+                break;
+#endif
+#ifdef BSP_USING_UART1
+            case MSG_UART1_IRQ:
+                uart1_irq_process();
+                break;
+#endif
+#ifdef BSP_USING_UART2
+            case MSG_UART2_IRQ:
+                uart2_irq_process();
+                break;
+#endif
+            default:
+                break;
+        }
+    }
+}
+
+static int drv_thread_init(void)
+{
+    drv_mq = rt_mq_create("drv", 1, 128, RT_IPC_FLAG_FIFO);
+    drv_tid = rt_thread_create("drv",
+            drv_thread_entry,
+            RT_NULL,
+            DRV_THREAD_STACK_SIZE,
+            DRV_THREAD_PRIORITY,
+            DRV_THREAD_TIMESLICE);
+
+    if (drv_tid != RT_NULL)
+        rt_thread_startup(drv_tid);
+}
+INIT_PREV_EXPORT(drv_thread_init);
diff --git a/bsp/bluetrum/libraries/hal_drivers/drv_common.h b/bsp/bluetrum/libraries/hal_drivers/drv_common.h
index 3af014f49ab30b1d7284fcce36c869ee0f6a1ae2..a4af77821eee40ee33ceed531b94806d06e3343d 100644
--- a/bsp/bluetrum/libraries/hal_drivers/drv_common.h
+++ b/bsp/bluetrum/libraries/hal_drivers/drv_common.h
@@ -17,4 +17,8 @@
 
 #define GET_PIN(PORTx,PIN) (uint8_t)__AB32_GET_PIN_##PORTx(PIN)
 
+void uart0_irq_post(void);
+void uart1_irq_post(void);
+void uart2_irq_post(void);
+
 #endif // DRV_COMMON_H__
diff --git a/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c b/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c
index 9107107ab019f8dad5de9cd9e425d849606e9896..69b7613943ab0101702f325e271185b6c4b2c518 100644
--- a/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c
+++ b/bsp/bluetrum/libraries/hal_drivers/drv_rtc.c
@@ -144,151 +144,68 @@ void hal_rtc_init(void)
 }
 /************** HAL End *******************/
 
-static time_t get_rtc_time_stamp(void)
+static rt_err_t ab32_rtc_get_secs(void *args)
 {
-    time_t sec = 0;
-
-    sec = irtc_time_read(RTCCNT_CMD);
-    LOG_D("get rtc time.");
+    *(rt_uint32_t *)args = irtc_time_read(RTCCNT_CMD);
+    LOG_D("RTC: get rtc_time %x\n", *(rt_uint32_t *)args);
 
-    return sec;
+    return RT_EOK;
 }
 
-static rt_err_t set_rtc_time_stamp(time_t time_stamp)
+static rt_err_t ab32_rtc_set_secs(void *args)
 {
-    irtc_time_write(RTCCNT_CMD, time_stamp);
+    irtc_time_write(RTCCNT_CMD, *(rt_uint32_t *)args);
 
     return RT_EOK;
 }
 
-static rt_err_t set_rtc_alarm_stamp(time_t alarm_stamp)
+static rt_err_t ab32_rtc_get_alarm(void *args)
 {
-    irtc_time_write(RTCALM_CMD, alarm_stamp);
+    *(rt_uint32_t *)args = irtc_time_read(RTCALM_CMD);
 
     return RT_EOK;
 }
 
-static time_t get_rtc_alarm_stamp(void)
+static rt_err_t ab32_rtc_set_alarm(void *args)
 {
-    time_t sec = 0;
-
-    sec = irtc_time_read(RTCALM_CMD);
+    irtc_time_write(RTCALM_CMD, *(rt_uint32_t *)args);
 
-    return sec;
+    return RT_EOK;
 }
 
-static void rt_rtc_init(void)
+static rt_err_t ab32_rtc_init(void)
 {
     hal_rtc_init();
-}
-
-static rt_err_t ab32_rtc_control(rt_device_t dev, int cmd, void *args)
-{
-    rt_err_t result = RT_EOK;
-    RT_ASSERT(dev != RT_NULL);
-    switch (cmd)
-    {
-    case RT_DEVICE_CTRL_RTC_GET_TIME:
-        *(time_t *)args = get_rtc_time_stamp();
-        LOG_D("RTC: get rtc_time %x", *(time_t *)args);
-        break;
-
-    case RT_DEVICE_CTRL_RTC_SET_TIME:
-        if (set_rtc_time_stamp(*(time_t *)args))
-        {
-            result = -RT_ERROR;
-        }
-        LOG_D("RTC: set rtc_time %x", *(time_t *)args);
-        break;
-    case RT_DEVICE_CTRL_RTC_SET_ALARM:
-        if (set_rtc_alarm_stamp(*(time_t *)args))
-        {
-            result = -RT_ERROR;
-        }
-        LOG_D("RTC: set alarm_stamp %x", *(time_t *)args);
-        break;
-    case RT_DEVICE_CTRL_RTC_GET_ALARM:
-        *(time_t *)args = get_rtc_alarm_stamp();
-        LOG_D("RTC: get alarm_stamp %x", *(time_t *)args);
-        break;
-    }
 
-    return result;
+    return RT_EOK;
 }
 
-#ifdef RT_USING_DEVICE_OPS
-const static struct rt_device_ops rtc_ops =
+static const struct rt_rtc_ops ab32_rtc_ops =
 {
+    ab32_rtc_init,
+    ab32_rtc_get_secs,
+    ab32_rtc_set_secs,
+    ab32_rtc_get_alarm,
+    ab32_rtc_set_alarm,
     RT_NULL,
     RT_NULL,
-    RT_NULL,
-    RT_NULL,
-    RT_NULL,
-    ab32_rtc_control
 };
-#endif
-
-static rt_err_t rt_hw_rtc_register(rt_device_t device, const char *name, rt_uint32_t flag)
-{
-    RT_ASSERT(device != RT_NULL);
-
-    rt_rtc_init();
-#ifdef RT_USING_DEVICE_OPS
-    device->ops         = &rtc_ops;
-#else
-    device->init        = RT_NULL;
-    device->open        = RT_NULL;
-    device->close       = RT_NULL;
-    device->read        = RT_NULL;
-    device->write       = RT_NULL;
-    device->control     = ab32_rtc_control;
-#endif
-    device->type        = RT_Device_Class_RTC;
-    device->rx_indicate = RT_NULL;
-    device->tx_complete = RT_NULL;
-    device->user_data   = RT_NULL;
-
-    /* register a character device */
-    return rt_device_register(device, name, flag);
-}
-
-#ifdef RT_USING_ALARM
-RT_SECTION(".irq.rtc")
-static void rtc_isr(int vector, void *param)
-{
-    rt_interrupt_enter();
-
-    if (RTCCON & RTC_CON_ALM_PEND)
-    {
-        RTCCPND |= RTC_CPND_ALM;
-    }
-
-#ifdef RTC_USING_1S_INT
-    if (RTCCON & RTC_CON_1S_PEND)
-    {
-        RTCCPND |= RTC_CPND_1S;
-    }
-#endif
 
-    rt_interrupt_leave();
-}
-#endif
+static rt_rtc_dev_t ab32_rtc_dev;
 
-int rt_hw_rtc_init(void)
+static int rt_hw_rtc_init(void)
 {
     rt_err_t result;
 
-    result = rt_hw_rtc_register(&rtc, "rtc", RT_DEVICE_FLAG_RDWR);
+    ab32_rtc_dev.ops = &ab32_rtc_ops;
+    result = rt_hw_rtc_register(&ab32_rtc_dev, "rtc", RT_DEVICE_FLAG_RDWR, RT_NULL);
     if (result != RT_EOK)
     {
         LOG_E("rtc register err code: %d", result);
         return result;
     }
-
-#ifdef RT_USING_ALARM
-    rt_hw_interrupt_install(IRQ_RTC_VECTOR, rtc_isr, RT_NULL, "rtc_isr");
-#endif
     LOG_D("rtc init success");
+
     return RT_EOK;
 }
 INIT_DEVICE_EXPORT(rt_hw_rtc_init);
diff --git a/bsp/bluetrum/libraries/hal_drivers/drv_usart.c b/bsp/bluetrum/libraries/hal_drivers/drv_usart.c
index 9e8ecdbf9fa219bf14689572d3ba8985c837b59e..23aa85848d1087b21c719c5c5b6fbfaf5b0a6046 100644
--- a/bsp/bluetrum/libraries/hal_drivers/drv_usart.c
+++ b/bsp/bluetrum/libraries/hal_drivers/drv_usart.c
@@ -10,7 +10,7 @@
 
 #include "board.h"
 #include "drv_usart.h"
-#include <shell.h>
+#include "api_huart.h"
 
 #ifdef RT_USING_SERIAL
 
@@ -40,6 +40,7 @@ static struct ab32_uart_config uart_config[] =
         .name = "uart0",
         .instance = UART0_BASE,
         .mode = UART_MODE_TX_RX | UART_MODE_1LINE,
+        .fifo_size = BSP_UART0_FIFO_SIZE,
     },
 #endif
 #ifdef BSP_USING_UART1
@@ -47,6 +48,7 @@ static struct ab32_uart_config uart_config[] =
         .name = "uart1",
         .instance = UART1_BASE,
         .mode = UART_MODE_TX_RX,
+        .fifo_size = BSP_UART1_FIFO_SIZE,
     },
 #endif
 #ifdef BSP_USING_UART2
@@ -54,12 +56,17 @@ static struct ab32_uart_config uart_config[] =
         .name = "uart2",
         .instance = UART2_BASE,
         .mode = UART_MODE_TX_RX,
+        .fifo_size = BSP_UART2_FIFO_SIZE,
     }
 #endif
 };
 
 static struct ab32_uart uart_obj[sizeof(uart_config) / sizeof(uart_config[0])] = {0};
 
+#ifdef HUART_ENABLE
+static uint8_t huart_dma[512];
+#endif
+
 static rt_err_t ab32_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
 {
     struct ab32_uart *uart;
@@ -101,7 +108,14 @@ static rt_err_t ab32_configure(struct rt_serial_device *serial, struct serial_co
     uart->dma_rx.last_index = 0;
 #endif
 
-    hal_uart_init(&uart->handle);
+    if (!uart->uart_dma_flag) {
+        hal_uart_init(&uart->handle);
+    }
+#ifdef HUART_ENABLE
+    else {
+        huart_init_do(HUART_TR_PB3, HUART_TR_PB4, uart->handle.init.baud, huart_dma, 512);
+    }
+#endif
 
     return RT_EOK;
 }
@@ -141,25 +155,55 @@ static int ab32_putc(struct rt_serial_device *serial, char ch)
     RT_ASSERT(serial != RT_NULL);
 
     uart = rt_container_of(serial, struct ab32_uart, serial);
-    hal_uart_clrflag(uart->handle.instance,  UART_FLAG_TXPND);
-    hal_uart_write(uart->handle.instance, ch);
-    while(hal_uart_getflag(uart->handle.instance, UART_FLAG_TXPND) == 0);
+
+    if (!uart->uart_dma_flag) {
+        hal_uart_clrflag(uart->handle.instance,  UART_FLAG_TXPND);
+        hal_uart_write(uart->handle.instance, ch);
+        while(hal_uart_getflag(uart->handle.instance, UART_FLAG_TXPND) == 0);
+    }
+#ifdef HUART_ENABLE
+    else {
+        huart_putchar(ch);
+    }
+#endif
 
     return 1;
 }
 
-RT_SECTION(".irq.usart")
 static int ab32_getc(struct rt_serial_device *serial)
 {
     int ch;
     struct ab32_uart *uart;
     RT_ASSERT(serial != RT_NULL);
+
     uart = rt_container_of(serial, struct ab32_uart, serial);
 
     ch = -1;
-    if(hal_uart_getflag(uart->handle.instance, UART_FLAG_RXPND) != HAL_RESET) {
-        ch = hal_uart_read(uart->handle.instance);
-        hal_uart_clrflag(uart->handle.instance, UART_FLAG_RXPND);
+    switch ((uint32_t)(uart->handle.instance)) {
+        case (uint32_t)UART0_BASE:
+            if (uart->rx_idx != uart->rx_idx_prev) {
+                ch = (int)(uart->rx_buf[uart->rx_idx_prev++ % 10]);
+            }
+            break;
+        case (uint32_t)UART1_BASE:
+#ifdef HUART_ENABLE
+            if ((uart->uart_dma_flag) && (huart_get_rxcnt())) {
+                ch = huart_getchar();
+            } else
+#endif
+            {
+                if (uart->rx_idx != uart->rx_idx_prev) {
+                    ch = (int)(uart->rx_buf[uart->rx_idx_prev++ % 10]);
+                }
+            }
+            break;
+        case (uint32_t)UART2_BASE:
+            if (uart->rx_idx != uart->rx_idx_prev) {
+                ch = (int)(uart->rx_buf[uart->rx_idx_prev++ % 10]);
+            }
+            break;
+        default:
+            break;
     }
 
     return ch;
@@ -170,78 +214,24 @@ static rt_size_t ab32_dma_transmit(struct rt_serial_device *serial, rt_uint8_t *
     return -1;
 }
 
-extern struct finsh_shell *shell;
-
-RT_SECTION(".irq.usart")
-static rt_err_t shell_rx_ind(void)
+void uart0_irq_process(void)
 {
-    RT_ASSERT(shell != RT_NULL);
-
-    /* release semaphore to let finsh thread rx data */
-    rt_sem_release(&shell->rx_sem);
-
-    return RT_EOK;
+    rt_hw_serial_isr(&(uart_obj[UART0_INDEX].serial), RT_SERIAL_EVENT_RX_IND);
 }
 
-RT_SECTION(".irq.usart")
-void uart_irq_process(struct rt_serial_device *serial)
+#ifdef BSP_USING_UART1
+void uart1_irq_process(void)
 {
-    int ch = -1;
-    rt_base_t level;
-    struct rt_serial_rx_fifo* rx_fifo;
-
-    /* interrupt mode receive */
-    rx_fifo = (struct rt_serial_rx_fifo*)serial->serial_rx;
-    RT_ASSERT(rx_fifo != RT_NULL);
-
-    while (1)
-    {
-        ch = serial->ops->getc(serial);
-        if (ch == -1) break;
-
-
-        /* disable interrupt */
-        level = rt_hw_interrupt_disable();
-
-        rx_fifo->buffer[rx_fifo->put_index] = ch;
-        rx_fifo->put_index += 1;
-        if (rx_fifo->put_index >= serial->config.bufsz) rx_fifo->put_index = 0;
-
-        /* if the next position is read index, discard this 'read char' */
-        if (rx_fifo->put_index == rx_fifo->get_index)
-        {
-            rx_fifo->get_index += 1;
-            rx_fifo->is_full = RT_TRUE;
-            if (rx_fifo->get_index >= serial->config.bufsz) rx_fifo->get_index = 0;
-
-            // _serial_check_buffer_size();
-        }
-
-        /* enable interrupt */
-        rt_hw_interrupt_enable(level);
-    }
-
-    rt_size_t rx_length;
-
-    /* get rx length */
-    level = rt_hw_interrupt_disable();
-    rx_length = (rx_fifo->put_index >= rx_fifo->get_index)? (rx_fifo->put_index - rx_fifo->get_index):
-        (serial->config.bufsz - (rx_fifo->get_index - rx_fifo->put_index));
-    rt_hw_interrupt_enable(level);
-
-    if ((serial->parent.rx_indicate != RT_NULL) && (rx_length != 0)) {
-    #ifdef RT_CONSOLE_DEVICE_NAME
-        if (serial == &uart_obj[*(RT_CONSOLE_DEVICE_NAME + 4) - '0'].serial) {
-            shell_rx_ind();
-        } else
-    #endif
-        {
-            rt_kprintf("rx_indicate must loacted in the .comm section!\n");
-            //serial->parent.rx_indicate(&serial->parent, rx_length);
-        }
-    }
+    rt_hw_serial_isr(&(uart_obj[UART1_INDEX].serial), RT_SERIAL_EVENT_RX_IND);
+}
+#endif
 
+#ifdef BSP_USING_UART2
+void uart2_irq_process(void)
+{
+    rt_hw_serial_isr(&(uart_obj[UART2_INDEX].serial), RT_SERIAL_EVENT_RX_IND);
 }
+#endif
 
 RT_SECTION(".irq.usart")
 static void uart_isr(int vector, void *param)
@@ -251,25 +241,50 @@ static void uart_isr(int vector, void *param)
 #ifdef BSP_USING_UART0
     if(hal_uart_getflag(UART0_BASE, UART_FLAG_RXPND))       //RX one byte finish
     {
-        uart_irq_process(&(uart_obj[UART0_INDEX].serial));
+        uart_obj[0].rx_buf[uart_obj[0].rx_idx++ % 10] = hal_uart_read(UART0_BASE);
+        hal_uart_clrflag(UART0_BASE, UART_FLAG_RXPND);
+        uart0_irq_post();
     }
 #endif
 #ifdef BSP_USING_UART1
     if(hal_uart_getflag(UART1_BASE, UART_FLAG_RXPND))       //RX one byte finish
     {
-        uart_irq_process(&(uart_obj[UART1_INDEX].serial));
+        uart_obj[1].rx_buf[uart_obj[1].rx_idx++ % 10] = hal_uart_read(UART1_BASE);
+        hal_uart_clrflag(UART1_BASE, UART_FLAG_RXPND);
+        uart1_irq_post();
     }
 #endif
 #ifdef BSP_USING_UART2
     if(hal_uart_getflag(UART2_BASE, UART_FLAG_RXPND))       //RX one byte finish
     {
-        uart_irq_process(&(uart_obj[UART2_INDEX].serial));
+        uart_obj[2].rx_buf[uart_obj[2].rx_idx++ % 10] = hal_uart_read(UART2_BASE);
+        hal_uart_clrflag(UART2_BASE, UART_FLAG_RXPND);
+        uart2_irq_post();
     }
 #endif
 
     rt_interrupt_leave();
 }
 
+#ifdef HUART_ENABLE
+RT_SECTION(".irq.huart")
+void huart_timer_isr(void)
+{
+    huart_if_rx_ovflow();
+
+    if (0 == huart_get_rxcnt()) {
+        return;
+    }
+
+    uart1_irq_post();
+}
+#else
+RT_SECTION(".irq.huart")
+void huart_timer_isr(void)
+{
+}
+#endif
+
 static const struct rt_uart_ops ab32_uart_ops =
 {
     .configure = ab32_configure,
@@ -291,9 +306,17 @@ int rt_hw_usart_init(void)
     {
         /* init UART object */
         uart_obj[i].config          = &uart_config[i];
+        uart_obj[i].rx_idx          = 0;
+        uart_obj[i].rx_idx_prev     = 0;
         uart_obj[i].serial.ops      = &ab32_uart_ops;
         uart_obj[i].serial.config   = config;
         uart_obj[i].serial.config.baud_rate = 1500000;
+        uart_obj[i].rx_buf          = rt_malloc(uart_config[i].fifo_size);
+
+        if (uart_obj[i].rx_buf == RT_NULL) {
+            LOG_E("uart%d malloc failed!", i);
+            continue;
+        }
 
         /* register UART device */
         result = rt_hw_serial_register(&uart_obj[i].serial, uart_obj[i].config->name,
@@ -305,7 +328,7 @@ int rt_hw_usart_init(void)
         RT_ASSERT(result == RT_EOK);
     }
 
-   return result;
+    return result;
 }
 
 #endif
diff --git a/bsp/bluetrum/libraries/hal_drivers/drv_usart.h b/bsp/bluetrum/libraries/hal_drivers/drv_usart.h
index 53635d95008bceb2137e02f370c57580fde5db4a..33746643b82e5d1dc8520a6bc3a08208e965ee9d 100644
--- a/bsp/bluetrum/libraries/hal_drivers/drv_usart.h
+++ b/bsp/bluetrum/libraries/hal_drivers/drv_usart.h
@@ -19,9 +19,10 @@
 struct ab32_uart_config
 {
     const char *name;
-    hal_sfr_t instance;
-    uint8_t mode;
-    uint8_t reserve[3];
+    hal_sfr_t   instance;
+    uint8_t     mode;
+    uint16_t    fifo_size;
+    uint8_t     reserve[1];
     // struct dma_config *dma_rx;
     // struct dma_config *dma_tx;
 };
@@ -45,6 +46,9 @@ struct ab32_uart
 #endif
     rt_uint16_t uart_dma_flag;
     struct rt_serial_device serial;
+    rt_uint8_t *rx_buf;
+    rt_uint8_t rx_idx;
+    rt_uint8_t rx_idx_prev;
 };
 
 #endif
diff --git a/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/SConscript b/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/SConscript
index e30f2160939f94b049bde43e2cedb99906af7396..3321a76d91fc884bbfaeec415e5aa4b690e45890 100644
--- a/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/SConscript
+++ b/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/SConscript
@@ -48,8 +48,8 @@ ASFLAGS          = ""
 CPPDEFINES       = []
 LOCAL_CPPDEFINES = []
 
-LIBS             = ['hal'] 
-LIBPATH          = [CWD]
+LIBS             = [] 
+LIBPATH          = []
 
 LINKFLAGS        = "" 
 
diff --git a/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/api_huart.h b/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/api_huart.h
new file mode 100644
index 0000000000000000000000000000000000000000..15a1c548facd5d323936df52221f30abe09370e7
--- /dev/null
+++ b/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/api_huart.h
@@ -0,0 +1,28 @@
+#ifndef API_HUART_H__
+#define API_HUART_H__
+
+enum {
+    HUART_TR_PA7    = 0,
+    HUART_TR_PB2,
+    HUART_TR_PB3,
+    HUART_TR_PE7,
+    HUART_TR_PA1,
+    HUART_TR_PA6,
+    HUART_TR_PB1,
+    HUART_TR_PB4,
+    HUART_TR_PE6,
+    HUART_TR_PA0,
+};
+
+void huart_init_do(uint8_t tx_port, uint8_t rx_port, uint32_t baud_rate, uint8_t *buf, uint16_t buf_size);
+void huart_setbaudrate(unsigned int baudrate);
+void huart_putchar(const char ch);
+void huart_tx(const void *buf, unsigned int len);
+unsigned int huart_get_rxcnt(void);
+void huart_rxfifo_clear(void);
+char huart_getchar(void);
+void huart_exit(void);
+
+void huart_if_rx_ovflow(void);
+
+#endif
diff --git a/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/libhal.a b/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/libhal.a
deleted file mode 100644
index 97474b1370514216fc3e263d1da5d912795bb505..0000000000000000000000000000000000000000
Binary files a/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/libhal.a and /dev/null differ