diff --git a/User/device/bmp280_i2c.c b/User/device/bmp280_i2c.c
new file mode 100644
index 0000000..1cac0f2
--- /dev/null
+++ b/User/device/bmp280_i2c.c
@@ -0,0 +1,301 @@
+#include "bmp280_i2c.h"
+#include "bsp/i2c.h"
+
+#define I2C_Handle BSP_I2C_GetHandle(BSP_I2C_BMP280)
+
+/**
+ * @brief  读寄存器
+ * @param  regAdd 寄存器开始地址
+ * @param  pdata  存储数据的指针
+ * @param  size   寄存器个数
+ * @retval 无
+ */
+void bmp280_readReg(uint8_t regAdd, uint8_t *pdata, uint8_t size) {
+    HAL_I2C_Mem_Read(I2C_Handle, BMP280_I2C_ADDR << 1, regAdd, I2C_MEMADD_SIZE_8BIT, pdata, size, 1000);
+}
+
+
+
+/**
+ * @brief  写1个寄存器
+ * @param  regAdd 寄存器开始地址
+ * @param  pdata  存储数据的指针
+ * @retval 0 写入成功
+ *         1 写入失败
+ */
+uint8_t bmp280_writeReg(uint8_t regAdd, uint8_t *pdata) {
+    if (HAL_I2C_Mem_Write(I2C_Handle, BMP280_I2C_ADDR << 1, regAdd, I2C_MEMADD_SIZE_8BIT, pdata, 1, 1000) == HAL_OK) {
+        return 0;
+    }
+    return 1;
+}
+
+
+/**
+ * @brief  读取设备物理id，用于调试
+ * @param  无
+ * @retval 设备id
+ */
+uint8_t bmp280_get_id(void) {
+    uint8_t temp = 0;
+    bmp280_readReg(BMP280_ID, &temp, 1);
+    return temp;
+}
+
+/**
+ * @brief  重启设备
+ * @param  无
+ * @retval 0 重启成功
+ *         1 重启失败
+ */
+uint8_t bmp280_reset(void) {
+    uint8_t temp = 0xB6;
+    return bmp280_writeReg(BMP280_RESET, &temp);
+}
+
+/**
+ * @brief  获取设备状态
+ * @param  无
+ * @retval 0 空闲
+ *         1 正在测量或者正在复制
+ */
+uint8_t bmp280_getStatus(void) {
+    uint8_t temp = 0;
+    bmp280_readReg(BMP280_STATUS, &temp, 1);
+    return (temp & 0x09) ? 1 : 0;
+}
+
+
+ /**
+  * @brief  工作模式设置推荐
+  * @param 	mode 0 睡眠模式
+  *              1 单次测量模式，测量完成后回到休眠模式
+  *              2 连续测量模式
+  * @retval 0 设置成功
+  *         1 设置失败 
+  */
+uint8_t bmp280_setMode(uint8_t mode)
+{
+	uint8_t temp=0;
+	bmp280_readReg(BMP280_CTRL_MEAS,&temp,1);
+	switch(mode)
+	{
+		case 0: 
+			temp&=0xFC;
+			break;
+		case 1:
+			temp&=0xFC;
+			temp|=0x01;
+			break;
+		case 2:
+			temp&=0xFC;
+			temp|=0x03;	
+			break;
+		default: 
+			return 1;
+	}
+	return bmp280_writeReg(BMP280_CTRL_MEAS,&temp);
+}
+
+
+ /**
+  * @brief  过采样设置
+  * @param 	mode temp&press 0 禁用
+  *                  1 过采样×1
+  *                  2 过采样×2
+  *                  3 过采样×4
+  *                  ..  .....
+  *                  5 过采样×16
+  * @retval 0 设置成功
+  *         1 设置失败 
+  */
+uint8_t bmp280_setOversampling(uint8_t osrs_p,uint8_t osrs_t)
+{
+	uint8_t temp=0;
+	bmp280_readReg(BMP280_CTRL_MEAS,&temp,1);
+	temp&=0xE3;
+	osrs_p = osrs_p<<2;
+	osrs_p&= 0x1C;
+	temp|=osrs_p;
+	
+	temp&=0x1F;
+	osrs_t = osrs_t<<5;
+	osrs_t&= 0xE0;
+	temp|=osrs_t;
+	return bmp280_writeReg(BMP280_CTRL_MEAS,&temp);
+}
+
+
+ /**
+  * @brief  滤波器系数和采样间隔时间设置
+  * @param 	Standbyt   0 0.5ms    filter  0 关闭滤波器
+  *                  1 62.5ms           1 2
+  *                  2 125ms            2 4
+  *                  3 250ms            3 8
+  *                  4 500ms            4 16
+  *                  5 1000ms
+  *                  6 2000ms
+  *                  7 4000ms
+  * @retval 0 设置成功
+  *         1 设置失败 
+  */
+uint8_t bmp280_setConfig(uint8_t Standbyt,uint8_t filter)
+{
+		uint8_t temp=0;
+		temp = Standbyt<<5;
+		filter&=0x07;
+		filter=filter<<2;
+		temp|=filter;
+		return bmp280_writeReg(BMP280_CONFIG,&temp);
+}
+
+
+ /**
+  * @brief  获取校准系数
+  * @param 	calib 储存系数的结构体
+  * @retval 无
+  */
+void bmp280_getCalibration(bmp280_calib *calib)
+{
+	uint8_t buf[20];
+	bmp280_readReg(BMP280_DIGT,buf,6);
+	calib->dig_t1 =(uint16_t)(bmp280_msblsb_to_u16(buf[1], buf[0])); 
+	calib->dig_t2 =(int16_t)(bmp280_msblsb_to_u16(buf[3], buf[2])); 
+	calib->dig_t3 =(int16_t)(bmp280_msblsb_to_u16(buf[5], buf[4])); 
+	bmp280_readReg(BMP280_DIGP,buf,18);
+	calib->dig_p1 = (uint16_t)(bmp280_msblsb_to_u16(buf[1], buf[0])); 
+	calib->dig_p2 =(int16_t)(bmp280_msblsb_to_u16(buf[3], buf[2]));
+  calib->dig_p3 =(int16_t)(bmp280_msblsb_to_u16(buf[5], buf[4])); 
+  calib->dig_p4 =(int16_t)(bmp280_msblsb_to_u16(buf[7], buf[6])); 
+  calib->dig_p5 =(int16_t)(bmp280_msblsb_to_u16(buf[9], buf[8])); 
+  calib->dig_p6 =(int16_t)(bmp280_msblsb_to_u16(buf[11], buf[10])); 
+  calib->dig_p7 =(int16_t)(bmp280_msblsb_to_u16(buf[13], buf[12])); 
+  calib->dig_p8 =(int16_t)(bmp280_msblsb_to_u16(buf[15], buf[14])); 
+  calib->dig_p9 =(int16_t)(bmp280_msblsb_to_u16(buf[17], buf[16])); 	
+}
+
+
+
+ /**
+  * @brief  获取温度
+  * @param 	calib 系数的结构体
+  *       *temperature 温度值指针
+  *       *t_fine  精细分辨率温度值指针
+  * @retval 无 
+  */
+void bmp280_getTemperature(bmp280_calib *calib,double *temperature,int32_t *t_fine)
+{
+	uint8_t buf[3];
+	uint32_t data_xlsb;
+  uint32_t data_lsb;
+  uint32_t data_msb;
+	int32_t uncomp_temperature;
+	double var1, var2;
+
+	bmp280_readReg(BMP280_TEMP,buf,3);
+	data_msb = (int32_t)buf[0] << 12;
+  data_lsb = (int32_t)buf[1] << 4;
+  data_xlsb = (int32_t)buf[2] >> 4;
+	uncomp_temperature = (int32_t)(data_msb | data_lsb | data_xlsb);
+
+
+   var1 = (((double) uncomp_temperature) / 16384.0 - ((double) calib->dig_t1) / 1024.0) *
+           ((double) calib->dig_t2);
+   var2 =
+        ((((double) uncomp_temperature) / 131072.0 - ((double) calib->dig_t1) / 8192.0) *
+         (((double) uncomp_temperature) / 131072.0 - ((double) calib->dig_t1) / 8192.0)) *
+        ((double) calib->dig_t3);
+	*t_fine = (int32_t) (var1 + var2);
+	 *temperature = (var1 + var2) / 5120.0;
+}
+
+
+ /**
+  * @brief  获取气压
+  * @param 	calib 系数的结构体
+  *       *pressure 气压值指针
+  *       *t_fine 精细分辨率温度值指针
+  * @retval 无 
+  */
+void bmp280_getPressure(bmp280_calib *calib,double *pressure,int32_t *t_fine)
+{
+	uint8_t buf[3];
+	uint32_t data_xlsb;
+  uint32_t data_lsb;
+  uint32_t data_msb;
+	int32_t uncomp_pressure;
+	double var1, var2;
+	
+	bmp280_readReg(BMP280_PRES,buf,3);
+	data_msb = (uint32_t)buf[0] << 12;
+  data_lsb = (uint32_t)buf[1] << 4;
+  data_xlsb = (uint32_t)buf[2] >> 4;
+	uncomp_pressure = (data_msb | data_lsb | data_xlsb);
+	
+	var1 = ((double) *t_fine / 2.0) - 64000.0;
+  var2 = var1 * var1 * ((double) calib->dig_p6) / 32768.0;
+  var2 = var2 + var1 * ((double) calib->dig_p5) * 2.0;
+  var2 = (var2 / 4.0) + (((double) calib->dig_p4) * 65536.0);
+  var1 = (((double)calib->dig_p3) * var1 * var1 / 524288.0 + ((double)calib->dig_p2) * var1) /
+           524288.0;
+  var1 = (1.0 + var1 / 32768.0) * ((double) calib->dig_p1);
+	        *pressure = 1048576.0 - (double)uncomp_pressure;
+        *pressure = (*pressure - (var2 / 4096.0)) * 6250.0 / var1;
+        var1 = ((double)calib->dig_p9) * *pressure * *pressure / 2147483648.0;
+        var2 = *pressure * ((double)calib->dig_p8) / 32768.0;
+
+        *pressure = *pressure + (var1 + var2 + ((double)calib->dig_p7)) / 16.0;
+}	
+
+
+ /**
+  * @brief  初始化
+  * @param 	*calib 系数的结构体指针
+  * @retval 0 设置成功
+  *         1 设置失败
+  */
+uint8_t bmp280_init(bmp280_calib *calib)
+{
+		uint8_t rslt;
+		rslt = bmp280_get_id();
+		if(rslt == BMP2_CHIP_ID)
+		{
+			bmp280_getCalibration(calib);
+			rslt = bmp280_setOversampling(5,2);
+			if(rslt)
+			{
+				return 1;
+			}
+			rslt = bmp280_setConfig(0,4);
+			if(rslt)
+			{
+				return 1;
+			}
+			rslt = bmp280_setMode(2);
+			if(rslt)
+			{
+				return 1;
+			}
+		}
+		else
+		{
+			return 1;	
+		}
+		return 0;
+}
+
+
+ /**
+  * @brief  获取最终数据
+  * @param 	*calib 系数的结构体指针
+  * @retval 无 
+  */
+void bmp280_getdata(bmp280_calib *calib,float *temperature,float *pressure)
+{	
+		double temp_T,temp_P;
+		int32_t t_fine; 
+		bmp280_getTemperature(calib,&temp_T,&t_fine);
+		bmp280_getPressure(calib,&temp_P,&t_fine);
+		*temperature = (float)temp_T;
+		*pressure = (float)temp_P;
+}	
diff --git a/User/device/bmp280_i2c.h b/User/device/bmp280_i2c.h
new file mode 100644
index 0000000..9ec329d
--- /dev/null
+++ b/User/device/bmp280_i2c.h
@@ -0,0 +1,49 @@
+#pragma once
+
+/*底层接口定义*/
+#include "bsp/i2c.h"
+#include "stdint.h"
+
+#define BMP280_I2C_ADDR 0x76  // BMP280 默认 I2C 地址
+
+/*寄存器地址*/
+#define BMP280_ID 0xD0      // 设备ID地址
+#define BMP280_RESET 0xE0   // 设备重启
+#define BMP280_STATUS 0xF3  // 设备状态
+#define BMP280_CTRL_MEAS 0xF4  // 数据采集和模式设置
+#define BMP280_CONFIG 0xF5  // 采样速率，滤波器和接口设置
+#define BMP280_DIGT 0x88  // 温度校准系数起始位置
+#define BMP280_DIGP 0x8E  // 气压校准系数起始位置
+#define BMP280_TEMP 0xFA  // 温度储存起始位置
+#define BMP280_PRES 0xF7  // 气压储存起始位置
+
+#define BMP2_CHIP_ID 0x58  // 设备ID地址
+
+#define bmp280_msblsb_to_u16(msb, lsb) (((uint16_t)msb << 8) | ((uint16_t)lsb))
+
+typedef struct {
+    unsigned short dig_t1;
+    signed short dig_t2;
+    signed short dig_t3;
+    unsigned short dig_p1;
+    signed short dig_p2;
+    signed short dig_p3;
+    signed short dig_p4;
+    signed short dig_p5;
+    signed short dig_p6;
+    signed short dig_p7;
+    signed short dig_p8;
+    signed short dig_p9;
+} bmp280_calib;
+
+uint8_t bmp280_get_id(void);
+uint8_t bmp280_reset(void);
+uint8_t bmp280_getStatus(void);
+uint8_t bmp280_setMode(uint8_t mode);
+uint8_t bmp280_setOversampling(uint8_t osrs_p, uint8_t osrs_t);
+uint8_t bmp280_setConfig(uint8_t Standbyt, uint8_t filter);
+void bmp280_getCalibration(bmp280_calib *calib);
+void bmp280_getTemperature(bmp280_calib *calib, double *temperature, int32_t *t_fine);
+void bmp280_getPressure(bmp280_calib *calib, double *pressure, int32_t *t_fine);
+uint8_t bmp280_init(bmp280_calib *calib);
+void bmp280_getdata(bmp280_calib *calib, float *temperature, float *pressure);