Koichi Kikkawa / INA226gfg

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Files at this revision

API Documentation at this revision

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

INA226.cpp Show annotated file Show diff for this revision Revisions of this file
INA226.hpp Show annotated file Show diff for this revision Revisions of this file 
--- 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。
+}

--- 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;