diff --git a/sdk/bsp/include/flash_ctrl.h b/sdk/bsp/include/flash_ctrl.h
index 316cbae..8f9e917 100644
--- a/sdk/bsp/include/flash_ctrl.h
+++ b/sdk/bsp/include/flash_ctrl.h
@@ -1,72 +1,18 @@
-// Generated register defines for flash_ctrl
-
-// Copyright information found in source file:
-// Copyright lowRISC contributors.
-
-// Licensing information found in source file:
-// Licensed under the Apache License, Version 2.0, see LICENSE for details.
-// SPDX-License-Identifier: Apache-2.0
-
-#ifndef _FLASH_CTRL_REG_DEFS_
-#define _FLASH_CTRL_REG_DEFS_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-// Register width
-#define FLASH_CTRL_PARAM_REG_WIDTH 32
-
-#define FLASH_CTRL_BASE_ADDR      (0x0E000000)
-#define FLASH_CTRL_REG(offset)    (*((volatile uint32_t *)(FLASH_CTRL_BASE_ADDR + offset)))
-
-typedef enum {
-    FLASH_OP_READ = 0,
-    FLASH_OP_PROGRAM,
-    FLASH_OP_ERASE,
-    FLASH_OP_INIT
-} flash_op_mode_e;
-
-void flash_ctrl_init();
-void flash_ctrl_deinit();
-void flash_ctrl_qspi_init();
-void flash_ctrl_read(uint32_t start_addr, uint32_t *data, uint32_t len);
-uint8_t flash_ctrl_page_program(uint32_t page_addr, uint32_t *data, uint32_t len);
-uint8_t flash_ctrl_sector_erase(uint32_t sector_addr);
-
-// flash_ctrl control register
-#define FLASH_CTRL_CTRL_REG_OFFSET 0x0
-#define FLASH_CTRL_CTRL_REG_RESVAL 0x0
-#define FLASH_CTRL_CTRL_START_BIT 0
-#define FLASH_CTRL_CTRL_OP_MODE_MASK 0x3
-#define FLASH_CTRL_CTRL_OP_MODE_OFFSET 1
-#define FLASH_CTRL_CTRL_OP_MODE_FIELD \
-  ((bitfield_field32_t) { .mask = FLASH_CTRL_CTRL_OP_MODE_MASK, .index = FLASH_CTRL_CTRL_OP_MODE_OFFSET })
-#define FLASH_CTRL_CTRL_SW_CTRL_BIT 3
-#define FLASH_CTRL_CTRL_PROGRAM_INIT_BIT 4
-#define FLASH_CTRL_CTRL_WRITE_ERROR_BIT 5
-#define FLASH_CTRL_CTRL_RESERVED_MASK 0x3ffffff
-#define FLASH_CTRL_CTRL_RESERVED_OFFSET 6
-#define FLASH_CTRL_CTRL_RESERVED_FIELD \
-  ((bitfield_field32_t) { .mask = FLASH_CTRL_CTRL_RESERVED_MASK, .index = FLASH_CTRL_CTRL_RESERVED_OFFSET })
-
-// flash_ctrl address register
-#define FLASH_CTRL_ADDR_REG_OFFSET 0x4
-#define FLASH_CTRL_ADDR_REG_RESVAL 0x0
-#define FLASH_CTRL_ADDR_RW_ADDRESS_MASK 0x7fffff
-#define FLASH_CTRL_ADDR_RW_ADDRESS_OFFSET 0
-#define FLASH_CTRL_ADDR_RW_ADDRESS_FIELD \
-  ((bitfield_field32_t) { .mask = FLASH_CTRL_ADDR_RW_ADDRESS_MASK, .index = FLASH_CTRL_ADDR_RW_ADDRESS_OFFSET })
-#define FLASH_CTRL_ADDR_RESERVED_MASK 0x1ff
-#define FLASH_CTRL_ADDR_RESERVED_OFFSET 23
-#define FLASH_CTRL_ADDR_RESERVED_FIELD \
-  ((bitfield_field32_t) { .mask = FLASH_CTRL_ADDR_RESERVED_MASK, .index = FLASH_CTRL_ADDR_RESERVED_OFFSET })
-
-// flash_ctrl data register
-#define FLASH_CTRL_DATA_REG_OFFSET 0x8
-#define FLASH_CTRL_DATA_REG_RESVAL 0x0
-
-#ifdef __cplusplus
-}  // extern "C"
-#endif
-#endif  // _FLASH_CTRL_REG_DEFS_
-// End generated register defines for flash_ctrl
\ No newline at end of file
+#ifndef _FLASH_CTRL_H_
+#define _FLASH_CTRL_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define FLASH_CTRL_SECTOR_ERASE_FLAG (1 << 23)
+#define FLASH_CTRL(offset) (*((volatile uint32_t *)(0x02000000 + (offset))))
+
+void flash_ctrl_sector_erase(uint32_t sector_addr_offset);
+void flash_ctrl_write(uint32_t offset, uint32_t data);
+void flash_ctrl_read(uint32_t offset, uint32_t *data);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+#endif
diff --git a/sdk/bsp/lib/flash_ctrl.c b/sdk/bsp/lib/flash_ctrl.c
index 21f50cd..e3bc785 100644
--- a/sdk/bsp/lib/flash_ctrl.c
+++ b/sdk/bsp/lib/flash_ctrl.c
@@ -3,120 +3,17 @@
 #include "../../bsp/include/flash_ctrl.h"
 #include "../../bsp/include/utils.h"
 
-
-void flash_ctrl_init()
+void flash_ctrl_sector_erase(uint32_t sector_addr_offset)
 {
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) |= 1 << FLASH_CTRL_CTRL_SW_CTRL_BIT;
+    FLASH_CTRL(sector_addr_offset | FLASH_CTRL_SECTOR_ERASE_FLAG) = 0x0;
 }
 
-void flash_ctrl_deinit()
+void flash_ctrl_write(uint32_t offset, uint32_t data)
 {
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) &= ~(1 << FLASH_CTRL_CTRL_SW_CTRL_BIT);
+    FLASH_CTRL(offset) = data;
 }
 
-// 初始化flash为QSPI模式
-void flash_ctrl_qspi_init()
+void flash_ctrl_read(uint32_t offset, uint32_t *data)
 {
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) &= ~(FLASH_CTRL_CTRL_OP_MODE_MASK << FLASH_CTRL_CTRL_OP_MODE_OFFSET);
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) |= (FLASH_OP_INIT << FLASH_CTRL_CTRL_OP_MODE_OFFSET);
-
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) |=  1 << FLASH_CTRL_CTRL_START_BIT;
-    while (FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) & (1 << FLASH_CTRL_CTRL_START_BIT));
-}
-
-static void flash_ctrl_program_init()
-{
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) |= 1 << FLASH_CTRL_CTRL_PROGRAM_INIT_BIT;
-}
-
-static void flash_ctrl_program_deinit()
-{
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) &= ~(1 << FLASH_CTRL_CTRL_PROGRAM_INIT_BIT);
-}
-
-// 读数据
-void flash_ctrl_read(uint32_t start_addr, uint32_t *data, uint32_t len)
-{
-    uint32_t addr, i;
-
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) &= ~(FLASH_CTRL_CTRL_OP_MODE_MASK << FLASH_CTRL_CTRL_OP_MODE_OFFSET);
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) |= (FLASH_OP_READ << FLASH_CTRL_CTRL_OP_MODE_OFFSET);
-
-    addr = start_addr;
-    len = len >> 2;
-
-    for (i = 0; i < len; i++) {
-        FLASH_CTRL_REG(FLASH_CTRL_ADDR_REG_OFFSET) = addr & FLASH_CTRL_ADDR_RW_ADDRESS_MASK;
-        FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) |=  1 << FLASH_CTRL_CTRL_START_BIT;
-        while (FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) & (1 << FLASH_CTRL_CTRL_START_BIT));
-        data[i] = FLASH_CTRL_REG(FLASH_CTRL_DATA_REG_OFFSET);
-        addr += 4;
-    }
-}
-
-// 以word为单位进行烧写，一次最多烧一个page(256个字节)
-// 返回值，1：成功，0：失败
-uint8_t flash_ctrl_page_program(uint32_t page_addr, uint32_t *data, uint32_t len)
-{
-    uint32_t i, index;
-    uint32_t prog_len, remain_len;
-
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) &= ~(FLASH_CTRL_CTRL_OP_MODE_MASK << FLASH_CTRL_CTRL_OP_MODE_OFFSET);
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) |= (FLASH_OP_PROGRAM << FLASH_CTRL_CTRL_OP_MODE_OFFSET);
-
-    FLASH_CTRL_REG(FLASH_CTRL_ADDR_REG_OFFSET) = page_addr & FLASH_CTRL_ADDR_RW_ADDRESS_MASK;
-
-    if (len > 4)
-        flash_ctrl_program_init();
-
-    remain_len = len;
-    index = 0;
-
-    while (remain_len > 0) {
-        // 一次最多烧32个byte
-        if (remain_len > 32)
-            prog_len = 32;
-        else
-            prog_len = remain_len;
-
-        remain_len -= prog_len;
-        // word的个数
-        prog_len = prog_len >> 2;
-
-        // 每次烧写一个word
-        for (i = 0; i < prog_len; i++) {
-            FLASH_CTRL_REG(FLASH_CTRL_DATA_REG_OFFSET) = data[index];
-            FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) |=  1 << FLASH_CTRL_CTRL_START_BIT;
-            while (FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) & (1 << FLASH_CTRL_CTRL_START_BIT));
-            index++;
-        }
-    }
-
-    if (len > 4) {
-        flash_ctrl_program_deinit();
-        while (FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) & (1 << FLASH_CTRL_CTRL_START_BIT));
-    }
-
-    if (FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) & (1 << FLASH_CTRL_CTRL_WRITE_ERROR_BIT))
-        return 0;
-    else
-        return 1;
-}
-
-// 扇区擦除
-// 返回值，1：成功，0：失败
-uint8_t flash_ctrl_sector_erase(uint32_t sector_addr)
-{
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) &= ~(FLASH_CTRL_CTRL_OP_MODE_MASK << FLASH_CTRL_CTRL_OP_MODE_OFFSET);
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) |= (FLASH_OP_ERASE << FLASH_CTRL_CTRL_OP_MODE_OFFSET);
-
-    FLASH_CTRL_REG(FLASH_CTRL_ADDR_REG_OFFSET) = sector_addr & FLASH_CTRL_ADDR_RW_ADDRESS_MASK;
-
-    FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) |=  1 << FLASH_CTRL_CTRL_START_BIT;
-    while (FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) & (1 << FLASH_CTRL_CTRL_START_BIT));
-
-    if (FLASH_CTRL_REG(FLASH_CTRL_CTRL_REG_OFFSET) & (1 << FLASH_CTRL_CTRL_WRITE_ERROR_BIT))
-        return 0;
-    else
-        return 1;
+    *data = FLASH_CTRL(offset);
 }
diff --git a/sdk/examples/flash_ctrl/main.c b/sdk/examples/flash_ctrl/main.c
index c9fee37..75faf81 100644
--- a/sdk/examples/flash_ctrl/main.c
+++ b/sdk/examples/flash_ctrl/main.c
@@ -1,69 +1,17 @@
 #include <stdint.h>
-
-#include "../../bsp/include/uart.h"
-#include "../../bsp/include/xprintf.h"
-#include "../../bsp/include/pinmux.h"
+#include "../../bsp/include/utils.h"
 #include "../../bsp/include/flash_ctrl.h"
 
-
-#define DATA_BUF_LEN    (32)
-
-// bytes = DATA_BUF_LEN * 4
-#define DATA_BYTES      (DATA_BUF_LEN << 2)
-
-static uint32_t write_data_buf[DATA_BUF_LEN];
-static uint32_t read_data_buf[DATA_BUF_LEN];
-
-
 int main()
 {
-    uint32_t i;
+    uint32_t data;
 
-    // UART引脚配置
-    pinmux_set_io0_func(IO0_UART0_TX);
-    pinmux_set_io3_func(IO3_UART0_RX);
-    // UART初始化
-    uart_init(UART0, uart0_putc);
+    flash_ctrl_sector_erase(0x0);
+    flash_ctrl_write(0x00, 0x12345678);
+    flash_ctrl_read(0x00, &data);
 
-    flash_ctrl_init();
+    if (data != 0x12345678)
+        return -1;
 
-    // 擦除0子扇区
-    if (!flash_ctrl_sector_erase(0))
-        xprintf("erase failed...\n");
-
-    // 构造编程数据
-    for (i = 0; i < DATA_BUF_LEN; i++)
-        write_data_buf[i] = i;
-
-    // 编程第0页
-    if (!flash_ctrl_page_program(0, write_data_buf, DATA_BYTES))
-        xprintf("program failed...\n");
-
-    // 读0x0地址开始的数据
-    flash_ctrl_read(0, read_data_buf, DATA_BYTES);
-
-    flash_ctrl_deinit();
-
-    // 打印读到的数据
-    for (i = 0; i < DATA_BUF_LEN; i++)
-        xprintf("0x%x\n", read_data_buf[i]);
-
-/************************** QSPI测试 **************************/
-
-    flash_ctrl_init();
-
-    // QSPI初始化
-    flash_ctrl_qspi_init();
-
-    // 读0x0地址开始的数据
-    flash_ctrl_read(0, read_data_buf, DATA_BYTES);
-
-    flash_ctrl_deinit();
-
-    xprintf("\nquad spi test, read data:\n");
-    // 打印读到的数据
-    for (i = 0; i < DATA_BUF_LEN; i++)
-        xprintf("0x%x\n", read_data_buf[i]);
-
-    while (1);
+    return 0;
 }