气压计1s读一次，过采样率128，测量成功

apps/earphone/xtell_Sensor/send_data.c

@@ -129,7 +129,7 @@ void sensor_collect_task(void){
 
     while(1){//4组地磁数据、16组六轴数据、1组气压计数据
         interval++;
-        mmc5603nj_read_mag_data(&mmc5603nj_buffer);
+        mmc5603nj_read_mag_data(&mmc5603nj_buffer); //地磁的采样率为100Hz，每10ms读一次
         for(int i = (interval-1)*4; i < interval*4; i++){
             send_data.sensor_package[i].mmc5603nj_buffer[0] = (int32_t)(mmc5603nj_buffer.x * 1000.0f);
             send_data.sensor_package[i].mmc5603nj_buffer[1] = (int32_t)(mmc5603nj_buffer.y * 1000.0f);
@@ -165,11 +165,11 @@ void sensor_collect_task(void){
         SL_data_index += MPU_FIFO_LEN/4;
 
 
-        if(interval >= 4){ 
+        if(interval >= 4){  //40ms
             interval = 0;
             SL_data_index = 0;
             #if BMP280
-            bmp280_read_data(&temperature, &pressure);//每40ms读取一次
+            bmp280_read_data(&temperature, &pressure);//每40ms读取一次，高精度的采样率为26.5Hz
             #else
             WF_GET_Temperature_Pressure(&temperature, &pressure);
             #endif
@@ -178,7 +178,7 @@ void sensor_collect_task(void){
                 send_data.sensor_package[i].pressure = (int32_t)(pressure * 1000.0f);      
             }
 
-            xlog("temperature: %.2f,pressure: %.2f\n",temperature,pressure);
+            // xlog("temperature: %.2f,pressure: %.2f\n",temperature,pressure);
             // xlog("fifo_num:%d\n",fifo_num);
             
             send_data.checkout_1 = 0xBE;
@@ -454,7 +454,7 @@ void sensor_test_task(void){
     while(1){
         WF_GET_Temperature_Pressure(&temperature, &pressure);
         xlog("temperature: %.3f,pressure: %.3f\n",temperature,pressure);
-        os_time_dly(40);
+        os_time_dly(100);
     }
 
 }

apps/earphone/xtell_Sensor/sensor/WF282A.c

@@ -150,7 +150,7 @@ uint8_t WF_Init() {
     xlog("Parsed Coefficients: c0=%d, c1=%d, c00=%ld, c10=%ld, c01=%d, c11=%d, c20=%d, c21=%d, c30=%d\n",
          c0, c1, c00, c10, c01, c11, c20, c21, c30);
 
-    #if 1 //连续测量
+    #if 0 //连续测量
     // 配置压力、温度和通用寄存器为连续测量模式
     wf282a_write_reg(WF_PRS_CFG, (PM_RATE_32 << 4) | PM_PRC_1); //reg: 0x06
     // 温度配置: 内部传感器 (TMP_INT_SENSOR), 32Hz测量速率 (TMP_RATE_32), 16x过采样 (TMP_PRC_16) -> 0x54
@@ -165,7 +165,7 @@ uint8_t WF_Init() {
     wf282a_write_reg(WF_PRS_CFG,  (PM_RATE_1 << 4) | PM_PRC_128); //reg: 0x06，压力
     wf282a_write_reg(WF_TMP_CFG, TMP_EXT_SENSOR | (TMP_RATE_1 << 4) | TMP_PRC_128); //reg: 0x07，温度
     //过采样率大于8要对移位置配置1
-    // wf282a_write_reg(WF_CFG_REG, 0x0C);  //reg: 0x09
+    wf282a_write_reg(WF_CFG_REG, 0x0C);  //reg: 0x09
     delay(40); // 稍长一点的延迟，确保传感器开始正常工作
     #endif
 
@@ -193,25 +193,34 @@ uint8_t WF_GetID() {
 
 //外部调用
 void WF_GET_Temperature_Pressure(float* temperature, float* precessure){
-    #if 0  //单词测量模式
+    #if 0  //连续测量模式
+    int32_t Traw = Get_Traw();
+    xlog("DEBUG: Traw = %ld\n", Traw); 
+    delay(5);
+    int32_t Praw = Get_Praw();
+    xlog("DEBUG: Praw = %ld\n", Praw); 
+    #else //单次测量
     wf282a_write_reg(WF_MEAS_CFG, 0x02); //内部进行一次温度测量
-    delay(200);
+    delay(500);
     int32_t Traw = Get_Traw();
+    xlog("DEBUG: Traw = %ld\n", Traw); 
     wf282a_write_reg(WF_MEAS_CFG, 0x01); //内部进行一次压力测量
-    delay(200);
-    int32_t Praw = Get_Praw();
-    #else
-    int32_t Traw = Get_Traw();
+    delay(500);
     int32_t Praw = Get_Praw();
+    xlog("DEBUG: Praw = %ld\n", Praw); 
+
     #endif
     
-    float Traw_sc = (float)Traw / KT; // 缩放原始温度值
-    float Praw_sc = (float)Praw / KP; // 缩放原始压力值
+    float Traw_sc = (float)Traw / KT;   // 缩放原始温度值
+    double Praw_sc = (double)Praw / KP; // 缩放原始压力值
+    double precessure_tmp = 0;
     *temperature = (float)c0 * 0.5f + (float)c1 * Traw_sc;
-    *precessure = (float)c00
-                    + Praw_sc * ((float)c10 + Praw_sc * ((float)c20 + Praw_sc * (float)c30))
-                    + Traw_sc * (float)c01
-                    + Traw_sc * Praw_sc * ((float)c11 + Praw_sc * (float)c21);
+    precessure_tmp = (double)c00
+                    + Praw_sc * ((double)c10 + Praw_sc * ((double)c20 + Praw_sc * (double)c30))
+                    + Traw_sc * (double)c01
+                    + Traw_sc * Praw_sc * ((double)c11 + Praw_sc + (double)c21);
+    xlog("temperature:%.3f,precessure: %.3f\n",*temperature, precessure_tmp);
+    *precessure = (float)precessure_tmp; // 传出
 }
 float WF_Altitude_Calculate() {
     float pressure_pa = WF_Pressure_Calculate();

apps/earphone/xtell_Sensor/sensor/WF282A.h

@@ -14,8 +14,8 @@ Oversampling Rate               Scale Factor (kP or kT)
 64 times (High Precision)           1040384
 128 times                           2088960
 */
-#define KT                          524288.0f  
-#define KP                          524288.0f 
+#define KT                          1572864.0f  
+#define KP                          1572864.0f 
 
 #define WF_PULL_UP 0  //外部是否接的上拉
 // I2C 从设备地址