diff --git a/examples/at_client/BL602 AT TEST.docx b/examples/at_client/BL602 AT TEST.docx
new file mode 100644
index 00000000..13ae3910
Binary files /dev/null and b/examples/at_client/BL602 AT TEST.docx differ
diff --git a/examples/at_client/at.c b/examples/at_client/at.c
new file mode 100644
index 00000000..4debdd02
--- /dev/null
+++ b/examples/at_client/at.c
@@ -0,0 +1,204 @@
+#include "bflb_platform.h"
+#include "hal_uart.h"
+#include "at.h"
+#include "ring_buffer.h"
+
+#define UART_SEND_BUF_SZIE 1024
+char send_buf[UART_SEND_BUF_SZIE] = { 0 };
+
+#define UART_RX_RINGBUFFER_SIZE (1 * 1024)
+
+uint8_t uart_rx_mem[UART_RX_RINGBUFFER_SIZE];
+
+struct device *uart1;
+Ring_Buffer_Type uart1_rx_rb;
+
+static void uart1_irq_callback(struct device *dev, void *args, uint32_t size, uint32_t state)
+{
+    Ring_Buffer_Write(&uart1_rx_rb, (uint8_t *)args, size);
+}
+
+uint32_t at_vprintfln(const char *format, va_list args)
+{
+    uint32_t len;
+
+    len = vsnprintf(send_buf, sizeof(send_buf) - 2, format, args);
+    if (len > sizeof(send_buf) - 2)
+        len = sizeof(send_buf) - 2;
+    memcpy(send_buf + len, "\r\n", 2);
+
+    len = len + 2;
+    MSG("%s\r\n", send_buf);
+    device_control(uart1, DEVICE_CTRL_CLR_INT, (void *)(UART_RX_FIFO_IT | UART_RTO_IT));
+    uart1->oflag &= ~DEVICE_OFLAG_INT_RX;
+    return device_write(uart1, 0, (uint8_t *)send_buf, len);
+}
+
+int at_read_line(struct at_client *client)
+{
+    uint32_t read_len = 0;
+    uint32_t start_time = 0;
+    char ch = 0, last_ch = 0;
+
+    memset(client->recv_line_buf, 0, client->recv_bufsz);
+    client->recv_line_len = 0;
+
+    start_time = bflb_platform_get_time_ms();
+    while (1) {
+        while (device_read(uart1, 0, &ch, 1) == 0) {
+            if ((bflb_platform_get_time_ms() - start_time) > client->timeout) {
+                client->resp_status = AT_RESP_TIMEOUT;
+                return AT_RESP_TIMEOUT;
+            }
+        }
+
+        if (read_len < client->recv_bufsz) {
+            client->recv_line_buf[read_len++] = ch;
+            client->recv_line_len = read_len;
+        } else {
+            MSG("buf full\r\n");
+            client->resp_status = AT_RESP_BUFF_FULL;
+            return AT_RESP_BUFF_FULL;
+        }
+
+        if (ch == '\n' && last_ch == '\r') {
+            if (strstr((const char *)client->recv_line_buf, (const char *)client->resp_succ)) {
+                client->resp_status = AT_RESP_OK;
+                goto match_out;
+            } else if (client->resp_err && strstr((const char *)client->recv_line_buf, (const char *)client->resp_err)) {
+                client->resp_status = AT_RESP_ERROR;
+                goto match_out;
+            }
+        }
+        last_ch = ch;
+    }
+
+match_out:
+    MSG("%s", client->recv_line_buf);
+    return read_len;
+}
+
+int at_exe_cmd(struct at_client *client, char *cmd_expr, ...)
+{
+    va_list ap;
+
+    va_start(ap, cmd_expr);
+    at_vprintfln(cmd_expr, ap);
+    va_end(ap);
+
+    return at_read_line(client);
+}
+
+int at_write_recv(uint8_t *send_buffer, uint32_t send_len, uint8_t *recv_buffer, uint32_t *recv_len, uint32_t timeout)
+{
+    int ret = 0;
+    uint8_t found = 0;
+    uint32_t read_len = 0;
+    uint32_t start_time = 0;
+    uint8_t ch = 0, last_ch = 0;
+    uint8_t tmp_buf[32] = { 0 };
+    const char *found_string = "+IPD:0,";
+    uint8_t found_index = 0;
+
+    struct at_client static_client;
+
+    static_client.recv_line_buf = tmp_buf;
+    static_client.recv_bufsz = 32;
+    static_client.resp_succ = ">";
+    static_client.resp_err = "FAIL";
+    static_client.timeout = 1000;
+    ret = at_exe_cmd(&static_client, "AT+CIPSEND=0,%d", 114);
+    if (ret < 0) {
+        return -1;
+    }
+
+    Ring_Buffer_Reset(&uart1_rx_rb);
+    device_control(uart1, DEVICE_CTRL_SET_INT, (void *)(UART_RX_FIFO_IT | UART_RTO_IT));
+    device_write(uart1, 0, (uint8_t *)send_buffer, send_len);
+
+    if (recv_buffer == NULL) {
+        return 0;
+    }
+
+    uint8_t *p = recv_buffer;
+    start_time = bflb_platform_get_time_ms();
+    while (1) {
+        while (Ring_Buffer_Read_Byte(&uart1_rx_rb, &ch) == 0) {
+            if ((bflb_platform_get_time_ms() - start_time) > timeout) {
+                return AT_RESP_TIMEOUT;
+            }
+        }
+
+        if (found == 0) {
+            tmp_buf[found_index++] = ch;
+            if (strstr((const char *)tmp_buf, found_string)) {
+                found = 1;
+                found_index = 0;
+            }
+        } else if (found == 1) {
+            tmp_buf[found_index++] = ch;
+            if (ch == '\n' && last_ch == '\r') {
+                if (found_index == 3) {
+                    read_len = (tmp_buf[0] - '0');
+                } else if (found_index == 4) {
+                    read_len = (tmp_buf[0] - '0') * 10 + (tmp_buf[1] - '0');
+                } else if (found_index == 5) {
+                    read_len = (tmp_buf[0] - '0') * 100 + (tmp_buf[1] - '0') * 10 + (tmp_buf[2] - '0');
+                }
+                *recv_len = read_len;
+                found = 2;
+            }
+            last_ch = ch;
+        } else {
+            *p++ = ch;
+            read_len--;
+            if (read_len == 0) {
+                return 0;
+            }
+        }
+    }
+    return 0;
+}
+
+#define __is_print(ch) ((unsigned int)((ch) - ' ') < 127u - ' ')
+void at_dump_hex(const void *ptr, uint32_t buflen)
+{
+    unsigned char *buf = (unsigned char *)ptr;
+    int i, j;
+
+    for (i = 0; i < buflen; i += 16) {
+        MSG("%08X:", i);
+
+        for (j = 0; j < 16; j++)
+            if (i + j < buflen) {
+                if ((j % 8) == 0) {
+                    MSG("  ");
+                }
+
+                MSG("%02X ", buf[i + j]);
+            } else
+                MSG("   ");
+        MSG(" ");
+
+        for (j = 0; j < 16; j++)
+            if (i + j < buflen)
+                MSG("%c", __is_print(buf[i + j]) ? buf[i + j] : '.');
+        MSG("\n");
+    }
+}
+
+void at_client_init()
+{
+    Ring_Buffer_Init(&uart1_rx_rb, uart_rx_mem, UART_RX_RINGBUFFER_SIZE, cpu_global_irq_disable, cpu_global_irq_enable);
+
+    uart_register(UART1_INDEX, "uart1");
+    uart1 = device_find("uart1");
+
+    if (uart1) {
+        UART_DEV(uart1)->baudrate = 115200;
+        device_open(uart1, DEVICE_OFLAG_STREAM_TX | DEVICE_OFLAG_INT_RX);
+        device_set_callback(uart1, uart1_irq_callback);
+        device_control(uart1, DEVICE_CTRL_SET_INT, (void *)(UART_RX_FIFO_IT | UART_RTO_IT));
+        Ring_Buffer_Reset(&uart1_rx_rb);
+    }
+}
\ No newline at end of file
diff --git a/examples/at_client/at.h b/examples/at_client/at.h
new file mode 100644
index 00000000..c02ea560
--- /dev/null
+++ b/examples/at_client/at.h
@@ -0,0 +1,29 @@
+#ifndef __AT_H_
+#define __AT_H_
+
+enum at_resp_status {
+    AT_RESP_OK = 0,         /* AT response end is OK */
+    AT_RESP_ERROR = -1,     /* AT response end is ERROR */
+    AT_RESP_TIMEOUT = -2,   /* AT response is timeout */
+    AT_RESP_BUFF_FULL = -3, /* AT response buffer is full */
+};
+
+struct at_client {
+    /* the current received one line data buffer */
+    uint8_t *recv_line_buf;
+    /* The length of the currently received one line data */
+    uint32_t recv_line_len;
+    /* The maximum supported receive data length */
+    uint32_t recv_bufsz;
+
+    uint32_t timeout;
+    const char *resp_succ;
+    const char *resp_err;
+    enum at_resp_status resp_status;
+};
+
+int at_exe_cmd(struct at_client *client, char *cmd_expr, ...);
+int at_write_recv(uint8_t *send_buffer, uint32_t send_len, uint8_t *recv_buffer, uint32_t *recv_len, uint32_t timeout);
+void at_dump_hex(const void *ptr, uint32_t buflen);
+void at_client_init(void);
+#endif
\ No newline at end of file
diff --git a/examples/at_client/at_client_httpget/CMakeLists.txt b/examples/at_client/at_client_httpget/CMakeLists.txt
new file mode 100644
index 00000000..46166dc7
--- /dev/null
+++ b/examples/at_client/at_client_httpget/CMakeLists.txt
@@ -0,0 +1,5 @@
+set(TARGET_REQUIRED_SRCS ${CMAKE_CURRENT_LIST_DIR}/../at.c)
+set(TARGET_REQUIRED_PRIVATE_INCLUDE ${CMAKE_CURRENT_LIST_DIR}/..)
+set(mains main.c)
+generate_bin()
+
diff --git a/examples/at_client/at_client_httpget/cdk/at_client_httpget.cdkproj b/examples/at_client/at_client_httpget/cdk/at_client_httpget.cdkproj
new file mode 100644
index 00000000..d3669d84
--- /dev/null
+++ b/examples/at_client/at_client_httpget/cdk/at_client_httpget.cdkproj
@@ -0,0 +1,744 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Project Name="at_client_httpget" Version="1" Language="C">
+  <Description>CPU: RV32IMAFC
+Chip: bl70x
+Board: bl70x_iot
+  </Description>
+  <Dependencies Name="Debug"/>
+  <VirtualDirectory Name="app">
+    <File Name="../main.c">
+      <FileOption/>
+    </File>
+    <File Name="../../at.c">
+      <FileOption/>
+    </File>
+  </VirtualDirectory>
+  <VirtualDirectory Name="chip">
+    <VirtualDirectory Name="riscv">
+      <File Name="../../../../drivers/bl702_driver/startup/interrupt.c">
+        <FileOption/>
+      </File>
+      <File Name="../../../../drivers/bl702_driver/startup/system_bl702.c">
+        <FileOption/>
+      </File>
+    </VirtualDirectory>
+    <VirtualDirectory Name="startup">
+      <File Name="../../../../drivers/bl702_driver/startup/GCC/entry.S">
+        <FileOption/>
+      </File>
+      <File Name="../../../../drivers/bl702_driver/startup/GCC/start_load.c">
+        <FileOption/>
+      </File>
+    </VirtualDirectory>
+  </VirtualDirectory>
+  <VirtualDirectory Name="hal">
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_acomp.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_adc.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_boot2.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_cam.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_clock.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_common.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_dac.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_dma.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_emac.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_flash.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_gpio.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_i2c.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_i2s.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_keyscan.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_mjpeg.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_mtimer.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_pm.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_pwm.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_qdec.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_rtc.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_sec_aes.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_sec_dsa.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_sec_ecdsa.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_sec_hash.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_spi.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_timer.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_uart.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_usb.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/hal_drv/src/hal_wdt.c">
+      <FileOption/>
+    </File>
+  </VirtualDirectory>
+  <VirtualDirectory Name="std">
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_acomp.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_adc.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_aon.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_cam.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_clock.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_dac.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_dma.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_ef_ctrl.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_emac.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_glb.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_hbn.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_i2c.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_i2c_gpio_sim.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_i2s.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_ir.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_common.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_kys.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_l1c.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_mjpeg.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_pds.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_psram.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_pwm.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_qdec.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_romapi.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_sec_dbg.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_sec_eng.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_sf_cfg.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_sf_cfg_ext.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_sf_ctrl.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_sflash.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_sflash_ext.c" ExcludeProjConfig="">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_spi.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_timer.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_uart.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_usb.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_xip_sflash.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/std_drv/src/bl702_xip_sflash_ext.c">
+      <FileOption/>
+    </File>
+  </VirtualDirectory>
+  <VirtualDirectory Name="bsp">
+    <VirtualDirectory Name="board">
+      <File Name="../../../../bsp/board/bl702/board.c">
+        <FileOption/>
+      </File>
+    </VirtualDirectory>
+    <VirtualDirectory Name="bsp_common">
+      <File Name="../../../../bsp/bsp_common/platform/bflb_platform.c">
+        <FileOption/>
+      </File>
+      <File Name="../../../../bsp/bsp_common/platform/syscalls.c">
+        <FileOption/>
+      </File>
+    </VirtualDirectory>
+  </VirtualDirectory>
+  <VirtualDirectory Name="common">
+    <File Name="../../../../common/device/drv_device.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../common/memheap/drv_mmheap.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../common/ring_buffer/ring_buffer.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../common/soft_crc/softcrc.c">
+      <FileOption/>
+    </File>
+    <File Name="../../../../common/misc/misc.c">
+      <FileOption/>
+    </File>
+  </VirtualDirectory>
+  <VirtualDirectory Name="script">
+    <File Name="../../../../tools/openocd/bl70x_gdb.init">
+      <FileOption/>
+    </File>
+    <File Name="../../../../drivers/bl702_driver/regs/bl70x_reg.svc">
+      <FileOption/>
+    </File>
+  </VirtualDirectory>
+  <MonitorProgress>
+    <DebugLaunch>154</DebugLaunch>
+    <FlashOperate>104</FlashOperate>
+  </MonitorProgress>
+  <VirtualDirectory Name="components">
+    <VirtualDirectory Name="fatfs">
+      <File Name="../../../../components/fatfs/diskio.c">
+        <FileOption/>
+      </File>
+      <File Name="../../../../components/fatfs/ff.c">
+        <FileOption/>
+      </File>
+      <File Name="../../../../components/fatfs/ffsystem.c">
+        <FileOption/>
+      </File>
+      <File Name="../../../../components/fatfs/ffunicode.c">
+        <FileOption/>
+      </File>
+    </VirtualDirectory>
+    <VirtualDirectory Name="shell">
+      <File Name="../../../../components/shell/shell.c">
+        <FileOption/>
+      </File>
+    </VirtualDirectory>
+    <VirtualDirectory Name="usb_stack">
+      <VirtualDirectory Name="class">
+        <VirtualDirectory Name="cdc">
+          <File Name="../../../../components/usb_stack/class/cdc/usbd_cdc.c">
+            <FileOption/>
+          </File>
+        </VirtualDirectory>
+        <VirtualDirectory Name="hid">
+          <File Name="../../../../components/usb_stack/class/hid/usbd_hid.c">
+            <FileOption/>
+          </File>
+        </VirtualDirectory>
+        <VirtualDirectory Name="msc">
+          <File Name="../../../../components/usb_stack/class/msc/usbd_msc.c">
+            <FileOption/>
+          </File>
+        </VirtualDirectory>
+      </VirtualDirectory>
+      <VirtualDirectory Name="core">
+        <File Name="../../../../components/usb_stack/core/usbd_core.c">
+          <FileOption/>
+        </File>
+      </VirtualDirectory>
+    </VirtualDirectory>
+  </VirtualDirectory>
+  <Dependencies Name="BuildSet"/>
+  <DebugSessions>
+    <watchExpressions/>
+    <memoryExpressions>;;;</memoryExpressions>
+    <statistics>;;MHZ;</statistics>
+    <peripheralTabs>
+      <Tab disFormat="Hex">glb</Tab>
+      <Tab disFormat="Hex">uart</Tab>
+    </peripheralTabs>
+    <WatchDisplayFormat>1</WatchDisplayFormat>
+    <LocalDisplayFormat>1</LocalDisplayFormat>
+    <debugLayout/>
+    <memoryTabColSizeExpressions>100:8;100:8;100:8;100:8;</memoryTabColSizeExpressions>
+  </DebugSessions>
+  <DebugSessions>
+    <watchExpressions/>
+    <memoryExpressions>;;;</memoryExpressions>
+    <statistics>;;MHZ;</statistics>
+    <peripheralTabs>
+      <Tab disFormat="Hex">glb</Tab>
+      <Tab disFormat="Hex">uart</Tab>
+    </peripheralTabs>
+    <WatchDisplayFormat>1</WatchDisplayFormat>
+    <LocalDisplayFormat>1</LocalDisplayFormat>
+    <debugLayout/>
+    <memoryTabColSizeExpressions>100:8;100:8;100:8;100:8;</memoryTabColSizeExpressions>
+  </DebugSessions>
+  <Dependencies Name="CK_Link_Debug"/>
+  <Dependencies Name="OpenOCD_Debug"/>
+  <BuildConfigs>
+    <BuildConfig Name="CK_Link_Debug">
+      <Target>
+        <ROMBank Selected="1">
+          <ROM1>
+            <InUse>no</InUse>
+            <Start>0x23000000</Start>
+            <Size>0x100000</Size>
+          </ROM1>
+          <ROM2>
+            <InUse>no</InUse>
+            <Start>0x22014000</Start>
+            <Size>0x4000</Size>
+          </ROM2>
+          <ROM3>
+            <InUse>no</InUse>
+            <Start>0x42018000</Start>
+            <Size>0x8000</Size>
+          </ROM3>
+          <ROM4>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+          </ROM4>
+          <ROM5>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+          </ROM5>
+        </ROMBank>
+        <RAMBank>
+          <RAM1>
+            <InUse>yes</InUse>
+            <Start>0x42020000</Start>
+            <Size>0xc000</Size>
+            <Init>yes</Init>
+          </RAM1>
+          <RAM2>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+            <Init>yes</Init>
+          </RAM2>
+          <RAM3>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+            <Init>yes</Init>
+          </RAM3>
+          <RAM4>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+            <Init>yes</Init>
+          </RAM4>
+          <RAM5>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+            <Init>yes</Init>
+          </RAM5>
+        </RAMBank>
+        <CPU>rv32imafc</CPU>
+        <UseMiniLib>yes</UseMiniLib>
+        <Endian>little</Endian>
+        <UseHardFloat>no</UseHardFloat>
+        <UseEnhancedLRW>no</UseEnhancedLRW>
+        <UseContinueBuild>no</UseContinueBuild>
+        <UseSemiHost>no</UseSemiHost>
+      </Target>
+      <Output>
+        <OutputName>$(ProjectName)</OutputName>
+        <Type>Executable</Type>
+        <CreateHexFile>no</CreateHexFile>
+        <CreateBinFile>yes</CreateBinFile>
+        <Preprocessor>no</Preprocessor>
+        <Disassmeble>yes</Disassmeble>
+        <CallGraph>no</CallGraph>
+        <Map>yes</Map>
+      </Output>
+      <User>
+        <BeforeCompile>
+          <RunUserProg>no</RunUserProg>
+          <UserProgName/>
+        </BeforeCompile>
+        <BeforeMake>
+          <RunUserProg>no</RunUserProg>
+          <UserProgName/>
+        </BeforeMake>
+        <AfterMake>
+          <RunUserProg>no</RunUserProg>
+          <UserProgName>$(ProjectPath)../../../../tools/bflb_flash_tool/bflb_mcu_tool.exe  --chipname=bl702 --interface=openocd --firmware="$(ProjectPath)/Obj/$(ProjectName).bin" </UserProgName>
+        </AfterMake>
+      </User>
+      <Compiler>
+        <Define>ARCH_RISCV;BFLB_USE_HAL_DRIVER;BFLB_USE_ROM_DRIVER;bl706_iot</Define>
+        <Undefine/>
+        <Optim>Optimize more (-O2)</Optim>
+        <DebugLevel>Default (-g)</DebugLevel>
+        <IncludePath>$(ProjectPath);$(ProjectPath)../;$(ProjectPath)../../../../components/fatfs;$(ProjectPath)../../../../components/freertos/Source/include;$(ProjectPath)../../../../components/shell;$(ProjectPath)../../../../components/usb_stack/class/audio;$(ProjectPath)../../../../components/usb_stack/class/cdc;$(ProjectPath)../../../../components/usb_stack/class/hid;$(ProjectPath)../../../../components/usb_stack/class/msc;$(ProjectPath)../../../../components/usb_stack/class/video;$(ProjectPath)../../../../components/usb_stack/class/webusb;$(ProjectPath)../../../../components/usb_stack/class/winusb;$(ProjectPath)../../../../components/usb_stack/common;$(ProjectPath)../../../../components/usb_stack/core;$(ProjectPath)../../../../bsp/board/bl702;$(ProjectPath)../../../../bsp/bsp_common/platform;$(ProjectPath)../../../../common/device;$(ProjectPath)../../../../common/list;$(ProjectPath)../../../../common/memheap;$(ProjectPath)../../../../common/misc;$(ProjectPath)../../../../common/ring_buffer;$(ProjectPath)../../../../common/soft_crc;$(ProjectPath)../../../../components/shell;$(ProjectPath)../../../../drivers/bl702_driver;$(ProjectPath)../../../../drivers/bl702_driver/hal_drv/default_config;$(ProjectPath)../../../../drivers/bl702_driver/hal_drv/inc;$(ProjectPath)../../../../drivers/bl702_driver/regs;$(ProjectPath)../../../../drivers/bl702_driver/startup;$(ProjectPath)../../../../drivers/bl702_driver/std_drv/inc;$(ProjectPath)../../../../drivers/bl602_driver/risc-v/Core/Include;$(ProjectPath)../../../../drivers/bl602_driver/hal_drv/inc;$(ProjectPath)../../../../drivers/bl602_driver/hal_drv/default_config;$(ProjectPath)../../../../drivers/bl602_driver/regs;$(ProjectPath)../../../../drivers/bl602_driver/std_drv/inc;$(ProjectPath)../../../../examples/at_client</IncludePath>
+        <OtherFlags>-fshort-enums -fno-common -fms-extensions -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -Wall -Wshift-negative-value -Wchar-subscripts -Wformat -Wuninitialized -Winit-self -Wignored-qualifiers -Wunused -Wundef -msmall-data-limit=4 -std=c99</OtherFlags>
+        <Verbose>no</Verbose>
+        <Ansi>no</Ansi>
+        <Syntax>no</Syntax>
+        <Pedantic>no</Pedantic>
+        <PedanticErr>no</PedanticErr>
+        <InhibitWarn>no</InhibitWarn>
+        <AllWarn>yes</AllWarn>
+        <WarnErr>no</WarnErr>
+        <OneElfS>yes</OneElfS>
+        <OneElfSPerData>no</OneElfSPerData>
+        <Fstrict>no</Fstrict>
+      </Compiler>
+      <Asm>
+        <Define/>
+        <Undefine/>
+        <IncludePath>$(ProjectPath);$(ProjectPath)../;$(ProjectPath)../../../../components/fatfs;$(ProjectPath)../../../../components/freertos/Source/include;$(ProjectPath)../../../../components/shell;$(ProjectPath)../../../../components/usb_stack/class/audio;$(ProjectPath)../../../../components/usb_stack/class/cdc;$(ProjectPath)../../../../components/usb_stack/class/hid;$(ProjectPath)../../../../components/usb_stack/class/msc;$(ProjectPath)../../../../components/usb_stack/class/video;$(ProjectPath)../../../../components/usb_stack/class/webusb;$(ProjectPath)../../../../components/usb_stack/class/winusb;$(ProjectPath)../../../../components/usb_stack/common;$(ProjectPath)../../../../components/usb_stack/core;$(ProjectPath)../../../../bsp/board/bl702;$(ProjectPath)../../../../bsp/bsp_common/platform;$(ProjectPath)../../../../common/device;$(ProjectPath)../../../../common/list;$(ProjectPath)../../../../common/memheap;$(ProjectPath)../../../../common/misc;$(ProjectPath)../../../../common/ring_buffer;$(ProjectPath)../../../../common/soft_crc;$(ProjectPath)../../../../components/shell;$(ProjectPath)../../../../drivers/bl702_driver;$(ProjectPath)../../../../drivers/bl702_driver/hal_drv/default_config;$(ProjectPath)../../../../drivers/bl702_driver/hal_drv/inc;$(ProjectPath)../../../../drivers/bl702_driver/regs;$(ProjectPath)../../../../drivers/bl702_driver/startup;$(ProjectPath)../../../../drivers/bl702_driver/std_drv/inc;$(ProjectPath)../../../../drivers/bl602_driver/risc-v/Core/Include;$(ProjectPath)../../../../drivers/bl602_driver/startup;$(ProjectPath)../../../../drivers/bl602_driver/hal_drv/inc;$(ProjectPath)../../../../drivers/bl602_driver/hal_drv/default_config;$(ProjectPath)../../../../drivers/bl602_driver/regs;$(ProjectPath)../../../../drivers/bl602_driver/std_drv/inc</IncludePath>
+        <OtherFlags/>
+        <DebugLevel>gdwarf2</DebugLevel>
+      </Asm>
+      <Linker>
+        <Garbage>yes</Garbage>
+        <Garbage2>yes</Garbage2>
+        <LDFile>$(ProjectPath)../../../../drivers/bl702_driver/bl702_flash.ld</LDFile>
+        <LibName>c</LibName>
+        <LibPath/>
+        <OtherFlags>--specs=nano.specs</OtherFlags>
+        <AutoLDFile>no</AutoLDFile>
+        <LinkType/>
+      </Linker>
+      <Debug>
+        <LoadApplicationAtStartup>yes</LoadApplicationAtStartup>
+        <Connector>ICE</Connector>
+        <StopAt>yes</StopAt>
+        <StopAtText>main</StopAtText>
+        <InitFile/>
+        <AfterLoadFile>$(ProjectPath)/../../../../tools/openocd/bl70x_gdb.init</AfterLoadFile>
+        <AutoRun>yes</AutoRun>
+        <ResetType>Hard Reset</ResetType>
+        <SoftResetVal>23000000</SoftResetVal>
+        <ResetAfterLoad>no</ResetAfterLoad>
+        <AfterResetFile/>
+        <Dumpcore>no</Dumpcore>
+        <DumpcoreText>$(ProjectPath)/$(ProjectName).cdkcore</DumpcoreText>
+        <ConfigICE>
+          <IP>localhost</IP>
+          <PORT>1025</PORT>
+          <CPUNumber>0</CPUNumber>
+          <Clock>2000</Clock>
+          <Delay>10</Delay>
+          <WaitReset>50</WaitReset>
+          <DDC>yes</DDC>
+          <TRST>no</TRST>
+          <DebugPrint>no</DebugPrint>
+          <Connect>Normal</Connect>
+          <ResetType>Hard Reset</ResetType>
+          <SoftResetVal>21000000</SoftResetVal>
+          <RTOSType>Bare Metal</RTOSType>
+          <DownloadToFlash>yes</DownloadToFlash>
+          <ResetAfterConnect>yes</ResetAfterConnect>
+          <GDBName/>
+          <GDBServerType>Local</GDBServerType>
+          <OtherFlags>-arch riscv</OtherFlags>
+        </ConfigICE>
+        <ConfigSIM>
+          <SIMTarget/>
+          <OtherFlags/>
+          <NoGraphic>yes</NoGraphic>
+          <Log>no</Log>
+          <SimTrace>no</SimTrace>
+        </ConfigSIM>
+        <ConfigOpenOCD>
+          <OpenOCDExecutablePath>openocd-hifive</OpenOCDExecutablePath>
+          <OpenOCDTelnetPortEnable>no</OpenOCDTelnetPortEnable>
+          <OpenOCDTelnetPort>4444</OpenOCDTelnetPort>
+          <OpenOCDTclPortEnable>no</OpenOCDTclPortEnable>
+          <OpenOCDTclPort>6666</OpenOCDTclPort>
+          <OpenOCDConfigOptions>-f ../../../../tools/openocd/if_rv_dbg_plus.cfg -f ../../../../tools/openocd/tgt_702.cfg</OpenOCDConfigOptions>
+          <OpenOCDTimeout>5000</OpenOCDTimeout>
+        </ConfigOpenOCD>
+      </Debug>
+      <Flash>
+        <InitFile/>
+        <Erase>Erase Sectors</Erase>
+        <Algorithms Path="">bl702_flasher.elf</Algorithms>
+        <Program>yes</Program>
+        <Verify>yes</Verify>
+        <ResetAndRun>no</ResetAndRun>
+        <ResetType>Hard Reset</ResetType>
+        <SoftResetVal/>
+        <External>no</External>
+        <Command/>
+        <Arguments/>
+      </Flash>
+    </BuildConfig>
+    <BuildConfig Name="OpenOCD_Debug">
+      <Target>
+        <ROMBank Selected="1">
+          <ROM1>
+            <InUse>no</InUse>
+            <Start>0x23000000</Start>
+            <Size>0x100000</Size>
+          </ROM1>
+          <ROM2>
+            <InUse>no</InUse>
+            <Start>0x22014000</Start>
+            <Size>0x4000</Size>
+          </ROM2>
+          <ROM3>
+            <InUse>no</InUse>
+            <Start>0x42018000</Start>
+            <Size>0x8000</Size>
+          </ROM3>
+          <ROM4>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+          </ROM4>
+          <ROM5>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+          </ROM5>
+        </ROMBank>
+        <RAMBank>
+          <RAM1>
+            <InUse>yes</InUse>
+            <Start>0x42020000</Start>
+            <Size>0xc000</Size>
+            <Init>yes</Init>
+          </RAM1>
+          <RAM2>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+            <Init>yes</Init>
+          </RAM2>
+          <RAM3>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+            <Init>yes</Init>
+          </RAM3>
+          <RAM4>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+            <Init>yes</Init>
+          </RAM4>
+          <RAM5>
+            <InUse>no</InUse>
+            <Start/>
+            <Size/>
+            <Init>yes</Init>
+          </RAM5>
+        </RAMBank>
+        <CPU>rv32imafc</CPU>
+        <UseMiniLib>yes</UseMiniLib>
+        <Endian>little</Endian>
+        <UseHardFloat>no</UseHardFloat>
+        <UseEnhancedLRW>no</UseEnhancedLRW>
+        <UseContinueBuild>no</UseContinueBuild>
+        <UseSemiHost>no</UseSemiHost>
+      </Target>
+      <Output>
+        <OutputName>$(ProjectName)</OutputName>
+        <Type>Executable</Type>
+        <CreateHexFile>no</CreateHexFile>
+        <CreateBinFile>yes</CreateBinFile>
+        <Preprocessor>no</Preprocessor>
+        <Disassmeble>yes</Disassmeble>
+        <CallGraph>no</CallGraph>
+        <Map>yes</Map>
+      </Output>
+      <User>
+        <BeforeCompile>
+          <RunUserProg>no</RunUserProg>
+          <UserProgName/>
+        </BeforeCompile>
+        <BeforeMake>
+          <RunUserProg>no</RunUserProg>
+          <UserProgName/>
+        </BeforeMake>
+        <AfterMake>
+          <RunUserProg>no</RunUserProg>
+          <UserProgName>$(ProjectPath)../../../../tools/bflb_flash_tool/bflb_mcu_tool.exe  --chipname=bl702 --interface=openocd --firmware="$(ProjectPath)/Obj/$(ProjectName).bin" </UserProgName>
+        </AfterMake>
+      </User>
+      <Compiler>
+        <Define>ARCH_RISCV;BFLB_USE_HAL_DRIVER;BFLB_USE_ROM_DRIVER;bl706_iot</Define>
+        <Undefine/>
+        <Optim>Optimize more (-O2)</Optim>
+        <DebugLevel>Default (-g)</DebugLevel>
+        <IncludePath>$(ProjectPath);$(ProjectPath)../;$(ProjectPath)../../../../components/fatfs;$(ProjectPath)../../../../components/freertos/Source/include;$(ProjectPath)../../../../components/shell;$(ProjectPath)../../../../components/usb_stack/class/audio;$(ProjectPath)../../../../components/usb_stack/class/cdc;$(ProjectPath)../../../../components/usb_stack/class/hid;$(ProjectPath)../../../../components/usb_stack/class/msc;$(ProjectPath)../../../../components/usb_stack/class/video;$(ProjectPath)../../../../components/usb_stack/class/webusb;$(ProjectPath)../../../../components/usb_stack/class/winusb;$(ProjectPath)../../../../components/usb_stack/common;$(ProjectPath)../../../../components/usb_stack/core;$(ProjectPath)../../../../bsp/board/bl702;$(ProjectPath)../../../../bsp/bsp_common/platform;$(ProjectPath)../../../../common/device;$(ProjectPath)../../../../common/list;$(ProjectPath)../../../../common/memheap;$(ProjectPath)../../../../common/misc;$(ProjectPath)../../../../common/ring_buffer;$(ProjectPath)../../../../common/soft_crc;$(ProjectPath)../../../../components/shell;$(ProjectPath)../../../../drivers/bl702_driver;$(ProjectPath)../../../../drivers/bl702_driver/hal_drv/default_config;$(ProjectPath)../../../../drivers/bl702_driver/hal_drv/inc;$(ProjectPath)../../../../drivers/bl702_driver/regs;$(ProjectPath)../../../../drivers/bl702_driver/startup;$(ProjectPath)../../../../drivers/bl702_driver/std_drv/inc</IncludePath>
+        <OtherFlags>-fshort-enums -fno-common -fms-extensions -ffunction-sections -fdata-sections -fstrict-volatile-bitfields -Wall -Wshift-negative-value -Wchar-subscripts -Wformat -Wuninitialized -Winit-self -Wignored-qualifiers -Wunused -Wundef -msmall-data-limit=4 -std=c99</OtherFlags>
+        <Verbose>no</Verbose>
+        <Ansi>no</Ansi>
+        <Syntax>no</Syntax>
+        <Pedantic>no</Pedantic>
+        <PedanticErr>no</PedanticErr>
+        <InhibitWarn>no</InhibitWarn>
+        <AllWarn>yes</AllWarn>
+        <WarnErr>no</WarnErr>
+        <OneElfS>yes</OneElfS>
+        <OneElfSPerData>no</OneElfSPerData>
+        <Fstrict>no</Fstrict>
+      </Compiler>
+      <Asm>
+        <Define/>
+        <Undefine/>
+        <IncludePath>$(ProjectPath);$(ProjectPath)../;$(ProjectPath)../../../../components/fatfs;$(ProjectPath)../../../../components/freertos/Source/include;$(ProjectPath)../../../../components/shell;$(ProjectPath)../../../../components/usb_stack/class/audio;$(ProjectPath)../../../../components/usb_stack/class/cdc;$(ProjectPath)../../../../components/usb_stack/class/hid;$(ProjectPath)../../../../components/usb_stack/class/msc;$(ProjectPath)../../../../components/usb_stack/class/video;$(ProjectPath)../../../../components/usb_stack/class/webusb;$(ProjectPath)../../../../components/usb_stack/class/winusb;$(ProjectPath)../../../../components/usb_stack/common;$(ProjectPath)../../../../components/usb_stack/core;$(ProjectPath)../../../../bsp/board/bl702;$(ProjectPath)../../../../bsp/bsp_common/platform;$(ProjectPath)../../../../common/device;$(ProjectPath)../../../../common/list;$(ProjectPath)../../../../common/memheap;$(ProjectPath)../../../../common/misc;$(ProjectPath)../../../../common/ring_buffer;$(ProjectPath)../../../../common/soft_crc;$(ProjectPath)../../../../components/shell;$(ProjectPath)../../../../drivers/bl702_driver;$(ProjectPath)../../../../drivers/bl702_driver/hal_drv/default_config;$(ProjectPath)../../../../drivers/bl702_driver/hal_drv/inc;$(ProjectPath)../../../../drivers/bl702_driver/regs;$(ProjectPath)../../../../drivers/bl702_driver/startup;$(ProjectPath)../../../../drivers/bl702_driver/std_drv/inc;$(ProjectPath)../../../../drivers/bl602_driver/risc-v/Core/Include;$(ProjectPath)../../../../drivers/bl602_driver/startup;$(ProjectPath)../../../../drivers/bl602_driver/hal_drv/inc;$(ProjectPath)../../../../drivers/bl602_driver/hal_drv/default_config;$(ProjectPath)../../../../drivers/bl602_driver/regs;$(ProjectPath)../../../../drivers/bl602_driver/std_drv/inc</IncludePath>
+        <OtherFlags/>
+        <DebugLevel>gdwarf2</DebugLevel>
+      </Asm>
+      <Linker>
+        <Garbage>yes</Garbage>
+        <Garbage2>yes</Garbage2>
+        <LDFile>$(ProjectPath)../../../../drivers/bl702_driver/bl702_flash.ld</LDFile>
+        <LibName>c</LibName>
+        <LibPath/>
+        <OtherFlags>--specs=nano.specs</OtherFlags>
+        <AutoLDFile>no</AutoLDFile>
+        <LinkType/>
+      </Linker>
+      <Debug>
+        <LoadApplicationAtStartup>yes</LoadApplicationAtStartup>
+        <Connector>OpenOCD</Connector>
+        <StopAt>yes</StopAt>
+        <StopAtText>main</StopAtText>
+        <InitFile/>
+        <AfterLoadFile>$(ProjectPath)/../../../../tools/openocd/bl70x_gdb.init</AfterLoadFile>
+        <AutoRun>yes</AutoRun>
+        <ResetType>Hard Reset</ResetType>
+        <SoftResetVal>23000000</SoftResetVal>
+        <ResetAfterLoad>no</ResetAfterLoad>
+        <AfterResetFile/>
+        <Dumpcore>no</Dumpcore>
+        <DumpcoreText>$(ProjectPath)/$(ProjectName).cdkcore</DumpcoreText>
+        <ConfigICE>
+          <IP>localhost</IP>
+          <PORT>1025</PORT>
+          <CPUNumber>0</CPUNumber>
+          <Clock>2000</Clock>
+          <Delay>10</Delay>
+          <WaitReset>50</WaitReset>
+          <DDC>yes</DDC>
+          <TRST>no</TRST>
+          <DebugPrint>no</DebugPrint>
+          <Connect>Normal</Connect>
+          <ResetType>Hard Reset</ResetType>
+          <SoftResetVal>21000000</SoftResetVal>
+          <RTOSType>Bare Metal</RTOSType>
+          <DownloadToFlash>yes</DownloadToFlash>
+          <ResetAfterConnect>yes</ResetAfterConnect>
+          <GDBName/>
+          <GDBServerType>Local</GDBServerType>
+          <OtherFlags>-arch riscv</OtherFlags>
+        </ConfigICE>
+        <ConfigSIM>
+          <SIMTarget/>
+          <OtherFlags/>
+          <NoGraphic>yes</NoGraphic>
+          <Log>no</Log>
+          <SimTrace>no</SimTrace>
+        </ConfigSIM>
+        <ConfigOpenOCD>
+          <OpenOCDExecutablePath>openocd-hifive</OpenOCDExecutablePath>
+          <OpenOCDTelnetPortEnable>no</OpenOCDTelnetPortEnable>
+          <OpenOCDTelnetPort>4444</OpenOCDTelnetPort>
+          <OpenOCDTclPortEnable>no</OpenOCDTclPortEnable>
+          <OpenOCDTclPort>6666</OpenOCDTclPort>
+          <OpenOCDConfigOptions>-f ../../../../tools/openocd/if_rv_dbg_plus.cfg -f ../../../../tools/openocd/tgt_702.cfg</OpenOCDConfigOptions>
+          <OpenOCDTimeout>5000</OpenOCDTimeout>
+        </ConfigOpenOCD>
+      </Debug>
+      <Flash>
+        <InitFile/>
+        <Erase>Erase Sectors</Erase>
+        <Algorithms Path="">bl70x_flasher.elf</Algorithms>
+        <Program>yes</Program>
+        <Verify>yes</Verify>
+        <ResetAndRun>no</ResetAndRun>
+        <ResetType>Hard Reset</ResetType>
+        <SoftResetVal/>
+        <External>no</External>
+        <Command/>
+        <Arguments/>
+      </Flash>
+    </BuildConfig>
+  </BuildConfigs>
+</Project>
diff --git a/examples/at_client/at_client_httpget/main.c b/examples/at_client/at_client_httpget/main.c
new file mode 100644
index 00000000..84b4244d
--- /dev/null
+++ b/examples/at_client/at_client_httpget/main.c
@@ -0,0 +1,86 @@
+/**
+ * @file main.c
+ * @brief
+ *
+ * Copyright (c) 2021 Bouffalolab team
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+#include "bflb_platform.h"
+#include "at.h"
+
+#define UART_RECV_BUF_SZIE 64
+uint8_t recv_buf[UART_RECV_BUF_SZIE];
+
+struct at_client static_client;
+
+static const char *http_get = "GET https://api.seniverse.com/v3/weather/now.json?key=SCeYO8heOo9MPuTxY&location=beijing&language=zh-Hans&unit=c\r\n";
+
+
+int main(void)
+{
+    int ret = 0;
+    uint32_t recv_len = 0;
+    uint8_t recv_buffer[1024] = { 0 };
+
+    bflb_platform_init(0);
+
+    at_client_init();
+
+    memset(&static_client, 0, sizeof(struct at_client));
+
+    static_client.recv_line_buf = recv_buf;
+    static_client.recv_bufsz = UART_RECV_BUF_SZIE;
+
+    static_client.resp_succ = "OK";
+    static_client.resp_err = NULL;
+    static_client.timeout = 200;
+
+    ret = at_exe_cmd(&static_client, "AT");
+
+    //static_client.timeout = 1000;
+    //ret = at_exe_cmd(&static_client, "AT+RST");
+    ret = at_exe_cmd(&static_client, "AT+CWMODE=1");
+    ret = at_exe_cmd(&static_client, "AT+CIPRECVCFG=1");
+
+    static_client.resp_succ = "wifi connected";
+    static_client.resp_err = NULL;
+    static_client.timeout = 5000;
+
+    while (at_exe_cmd(&static_client, "AT+CWJAP=\"%s\",\"%s\"", "OPPO Reno4 5G", "12345678") < 0) {
+    }
+
+    MSG("wifi connected success\r\n");
+    bflb_platform_delay_ms(1000);
+
+    static_client.resp_succ = "CONNECTED";
+    static_client.resp_err = "ERROR: Connect fail";
+    static_client.timeout = 5000;
+
+    while (at_exe_cmd(&static_client, "AT+CIPSTART=0,\"TCP\",\"%s\",%d", "116.62.81.138", 80) < 0) {
+    }
+
+    MSG("tcp connected\r\n");
+    bflb_platform_delay_ms(1000);
+
+    at_write_recv((uint8_t *)http_get, 114, recv_buffer, &recv_len, 5000);
+    at_dump_hex(recv_buffer, recv_len);
+
+    while (1) {
+        bflb_platform_delay_ms(1000);
+    }
+}
\ No newline at end of file
diff --git a/examples/at_client/at_client_httpget/readme.md b/examples/at_client/at_client_httpget/readme.md
new file mode 100644
index 00000000..cb59a3ee
--- /dev/null
+++ b/examples/at_client/at_client_httpget/readme.md
@@ -0,0 +1,10 @@
+**board/bl706_iot/pinmux_config.h** 中 **CONFIG_GPIO18_FUNC**  选择 **GPIO_FUN_UART1_TX**, **CONFIG_GPIO19_FUNC**  选择 **GPIO_FUN_UART1_RX**
+
+- UART1_TX 连接 BL602 GPIO3 (UART RX)
+- UART1_RX 连接 BL602 GPIO4 (UART TX)
+
+```bash
+
+$ make APP=at_client BOARD=bl706_iot
+
+```
\ No newline at end of file
diff --git a/examples/at_client/bl602_AT_whole_v1.1.bin b/examples/at_client/bl602_AT_whole_v1.1.bin
new file mode 100644
index 00000000..aa71a0e2
Binary files /dev/null and b/examples/at_client/bl602_AT_whole_v1.1.bin differ