Revision 3:e0ddd1dfa2cc, committed 2021-07-31

Comitter:

MPPT51

Date:

Sat Jul 31 06:25:47 2021 +0000

Parent:

2:8950b0f31d73

Commit message:

ina226 commit

Changed in this revision

diff -r 8950b0f31d73 -r e0ddd1dfa2cc INA226.cpp
--- a/INA226.cpp	Sat Nov 24 18:37:00 2012 +0000
+++ b/INA226.cpp	Sat Jul 31 06:25:47 2021 +0000
@@ -67,13 +67,13 @@
 int INA226::getCurrent(double *I_)
 {
     unsigned short val;
-    if(rawRead(0x04,&val) == 0){
+    if(rawRead(0x04,&val) == 0){    //INA226は0x04 INA260は0x01
         char *s_p = reinterpret_cast<char *>(&val);
         short d_s;
         char *d_p = reinterpret_cast<char *>(&d_s);
         *(d_p + 0) = *(s_p + 0);
         *(d_p + 1) = *(s_p + 1);
-        *I_ = static_cast<double>(d_s) /* * 1.25 */;
+        *I_ = static_cast<double>(d_s) /* 1.25*/;  //INA260では1.25をかける(電流caliblationしないから)
         return 0;
     }
     return 1;
@@ -81,5 +81,11 @@
 
 int INA226::setCurrentCalibration(unsigned short val)
 {
-    return rawWrite(0x05,val);
+    return rawWrite(0x05,val);  //datasheet(p.21)より0x05はCalibrationResisterへの書き込みを指定している
 }
+int INA226::setConfigResister(unsigned short config)
+{
+    return rawWrite(0x00,config);   //0x00でINA226のConfigResisterに指定している(datasheet p.21)
+                                    //config(INA226.hで設定)は変換時間と平均回数などの指定をしているデータ
+                                    //どちらも大きいほどノイズの影響を受けづらいがデータ取得時間が長くなる。実装システムに合わせて調整。
+}

diff -r 8950b0f31d73 -r e0ddd1dfa2cc INA226.hpp
--- a/INA226.hpp	Sat Nov 24 18:37:00 2012 +0000
+++ b/INA226.hpp	Sat Jul 31 06:25:47 2021 +0000
@@ -22,8 +22,8 @@
          * @param i2c_ instance of I2C.
          * @param addr_ I2C slave address.
          * @param freq_ I2C frequency.
-         */
-        INA226(I2C &i2c_,int addr_ = 0x80,int freq_ = 100000);
+         */     //GNDGND(G-G):0x80, Vs+Vs+(1-1):0x8A, SDASDA(D-D):0x94, SCLSCL(C-C):0x9E, GNDVs+(G-1):0x82
+        INA226(I2C &i2c_,int addr_ = 0x80,int freq_ = 100000);  //0x94= ?, 0x8A=VsVs_11, 0x80=GNDGND_GG
         /**
          * Check INA226 exist.
          *
@@ -67,8 +67,10 @@
          * @param val write value;
          * @return 0:Read OK / !0:Read NG
          */
-        int setCurrentCalibration(unsigned short val = 0x0A00);
-
+        int setCurrentCalibration(unsigned short val = 0x1AAA);
+        //int setConfigResister(unsigned short config = 0x6600 | 0x01C0 | 0x0038 | 0x0007);  //0x456F=>0b 0100 010 101 101 111(datasheet pp21-23確認)
+        int setConfigResister(unsigned short config = 0x456F);
+        
     private:
         I2C &i2c;
         int i2c_addr;