diff --git a/apps/earphone/board/br28/board_jl701n_demo_cfg.h b/apps/earphone/board/br28/board_jl701n_demo_cfg.h
index 09398ad..3b32b7a 100644
--- a/apps/earphone/board/br28/board_jl701n_demo_cfg.h
+++ b/apps/earphone/board/br28/board_jl701n_demo_cfg.h
@@ -47,7 +47,7 @@
 
  */
 #define TCFG_HW_I2C0_PORTS                  'B'
-#define TCFG_HW_I2C0_CLK                    1000000                                  //硬件IIC波特率:400k
+#define TCFG_HW_I2C0_CLK                    1000000                                 //硬件IIC波特率:400k
 
 //*********************************************************************************//
 //                                 硬件SPI 配置                                        //
diff --git a/apps/earphone/xtell_Sensor/send_data.c b/apps/earphone/xtell_Sensor/send_data.c
index 523b397..72242db 100644
--- a/apps/earphone/xtell_Sensor/send_data.c
+++ b/apps/earphone/xtell_Sensor/send_data.c
@@ -105,7 +105,7 @@ u32 get_ms_timer(void) {
  * 
  */
 void sensor_collect_task(void){
-    ble_send_data_t send_data;
+    static ble_send_data_t send_data;
     mmc5603nj_mag_data_t mmc5603nj_buffer;
     float temperature = 0;
     float pressure = 0;
@@ -117,6 +117,7 @@ void sensor_collect_task(void){
     signed short gyry_buf[100];
     signed short gyrz_buf[100];
     int fifo_num = 0;
+    static int data_index = 0;
     u8 index = 1;
 
     while(1){//4组地磁数据、16组六轴数据、1组气压计数据
@@ -128,6 +129,12 @@ void sensor_collect_task(void){
             send_data.sensor_package[i].mmc5603nj_buffer[2] = (int32_t)(mmc5603nj_buffer.z * 1000.0f);
         }
         // xlog("MAG x: %.2f,y: %.2f,z: %.2f\n",mmc5603nj_buffer.x,mmc5603nj_buffer.y,mmc5603nj_buffer.z);
+
+        fifo_num = SL_SC7U22_FIFO_Read(accx_buf,accy_buf,accz_buf,gyrx_buf,gyry_buf,gyrz_buf); //40ms一次性读取内置fifo的数据
+        for(int i = 0; i < fifo_num; i++){
+            
+        }
+
         if(interval >= 4){ 
             interval = 0;
             memset(&accx_buf, 0, sizeof(accx_buf));
diff --git a/apps/earphone/xtell_Sensor/sensor/SC7U22.c b/apps/earphone/xtell_Sensor/sensor/SC7U22.c
index 833b623..e329d2a 100644
--- a/apps/earphone/xtell_Sensor/sensor/SC7U22.c
+++ b/apps/earphone/xtell_Sensor/sensor/SC7U22.c
@@ -295,7 +295,7 @@ void SL_SC7U22_RawData_Read(signed short * acc_data_buf,signed short * gyr_data_
 unsigned char  Acc_FIFO_Num;
 unsigned char  Gyr_FIFO_Num;
 
-unsigned char  SL_SC7U22_FIFO_DATA[1024];
+unsigned char  SL_SC7U22_FIFO_DATA[2048];
 
 unsigned short SL_SC7U22_FIFO_Read(signed short *accx_buf,signed short *accy_buf,signed short *accz_buf,signed short *gyrx_buf,signed short *gyry_buf,signed short *gyrz_buf)
 {
@@ -346,7 +346,8 @@ unsigned short SL_SC7U22_FIFO_Read(signed short *accx_buf,signed short *accy_buf
 	SL_SC7U22_I2c_Spi_Read(SL_SPI_IIC_INTERFACE, 0x20,1,&fifo_num2);
 	if((fifo_num1&0x10)==0x10)
 	{
-		fifo_num=2048;
+		// fifo_num=2048; // 原始代码，会导致溢出
+	       fifo_num = 2048; // 传感器FIFO已满，但我们的缓冲区只有1024字节，所以最多读1024字节
 	}
 	else
 	{
@@ -354,6 +355,11 @@ unsigned short SL_SC7U22_FIFO_Read(signed short *accx_buf,signed short *accy_buf
 	}
 #endif
 	
+	   // 增加保护，确保读取的字节数不超过缓冲区大小 (1024 bytes)
+	   // fifo_num 是 word (2 bytes) 的数量, 所以最大值是 512
+	   if (fifo_num > 1024) {
+	       fifo_num = 1024;
+	   }
 	SL_SC7U22_I2c_Spi_Read(SL_SPI_IIC_INTERFACE, 0x21, fifo_num*2, SL_SC7U22_FIFO_DATA);//读取FIFO数据 BYTE NUM
 //	SL_SC7U22_I2c_Spi_Write(SL_SPI_IIC_INTERFACE, 0x1D, 0x00);//BY PASS MODE
 //	SL_SC7U22_I2c_Spi_Write(SL_SPI_IIC_INTERFACE, 0x1D, 0x20);//Stream MODE
@@ -395,7 +401,7 @@ unsigned short SL_SC7U22_FIFO_Read(signed short *accx_buf,signed short *accy_buf
 			gyrx_buf[Gyr_FIFO_Num]	=	((s16)(SL_SC7U22_FIFO_DATA[i + 0] * 256 + SL_SC7U22_FIFO_DATA[i + 1])) ;
 			gyry_buf[Gyr_FIFO_Num]	=	((s16)(SL_SC7U22_FIFO_DATA[i + 2] * 256 + SL_SC7U22_FIFO_DATA[i + 3])) ;
 			gyrz_buf[Gyr_FIFO_Num]	=	((s16)(SL_SC7U22_FIFO_DATA[i + 4] * 256 + SL_SC7U22_FIFO_DATA[i + 5])) ;	
-			xlog("GyrNum : %d, Gyr_x : %4d, Gyr_y : %4d, Gyr_z : %4d,\r\n",Gyr_FIFO_Num, gyrx_buf[Gyr_FIFO_Num], gyry_buf[Gyr_FIFO_Num], gyrz_buf[Gyr_FIFO_Num]);	
+			// xlog("GyrNum : %d, Gyr_x : %4d, Gyr_y : %4d, Gyr_z : %4d,\r\n",Gyr_FIFO_Num, gyrx_buf[Gyr_FIFO_Num], gyry_buf[Gyr_FIFO_Num], gyrz_buf[Gyr_FIFO_Num]);	
 			i = i + 6;
 			Gyr_FIFO_Num++;
 		}
@@ -406,8 +412,11 @@ unsigned short SL_SC7U22_FIFO_Read(signed short *accx_buf,signed short *accy_buf
 			i = i + 2;
 		}
 	}
-    fifo_len = Acc_FIFO_Num;
-    // xlog("Acc_FIFO_Num:%d,Gyr_FIFO_Num:%d\n",Acc_FIFO_Num,Gyr_FIFO_Num);
+    if(Acc_FIFO_Num > Gyr_FIFO_Num)
+        fifo_len = Acc_FIFO_Num;
+    else
+        fifo_len = Gyr_FIFO_Num;
+    xlog("Acc_FIFO_Num:%d,Gyr_FIFO_Num:%d\n",Acc_FIFO_Num,Gyr_FIFO_Num);
 	
     SL_SC7U22_I2c_Spi_Write(SL_SPI_IIC_INTERFACE, 0x1D,0x00); 
     SL_SC7U22_I2c_Spi_Write(SL_SPI_IIC_INTERFACE, 0x1D,0x20); 
diff --git a/cpu/br28/tools/app.bin b/cpu/br28/tools/app.bin
index 0803cca..ecca5cd 100644
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diff --git a/cpu/br28/tools/data_code.bin b/cpu/br28/tools/data_code.bin
index 51bab63..db84310 100644
Binary files a/cpu/br28/tools/data_code.bin and b/cpu/br28/tools/data_code.bin differ
diff --git a/cpu/br28/tools/download/earphone/jl_isd.bin b/cpu/br28/tools/download/earphone/jl_isd.bin
index 69e734b..697ee92 100644
Binary files a/cpu/br28/tools/download/earphone/jl_isd.bin and b/cpu/br28/tools/download/earphone/jl_isd.bin differ