Koichi Kikkawa / INA226_abc

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Revision 4:15402b7eddf7, committed 2020-08-21

Comitter:
MPPT51
Date:
Fri Aug 21 08:28:43 2020 +0000
Parent:
3:a122073b93e2
Commit message:
20200821_motacon_ver4

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	Mon Aug 03 03:20:17 2020 +0000
+++ b/INA226.cpp	Fri Aug 21 08:28:43 2020 +0000
@@ -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に書き込める(datasheet p.21)
+                                    //configの値はINA226.hで設定している。configの値を変更することで変換時間と平均回数などを変更できる。
+                                    //変換時間、値の平均回数が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	Mon Aug 03 03:20:17 2020 +0000
+++ b/INA226.hpp	Fri Aug 21 08:28:43 2020 +0000
@@ -23,7 +23,7 @@
          * @param addr_ I2C slave address.
          * @param freq_ I2C frequency.
          */
-        INA226(I2C &i2c_,int addr_ = 0x94,int freq_ = 100000);
+        INA226(I2C &i2c_,int addr_ = 0x9E,int freq_ = 100000);  //GNDGND(G-G):0x80, Vs+Vs+(1-1):0x8A, SDASDA(D-D):0x94, SCLSCL(C-C):0x9E, GNDVs+(G-1):0x82
         /**
          * Check INA226 exist.
          *
@@ -67,8 +67,9 @@
          * @param val write value;
          * @return 0:Read OK / !0:Read NG
          */
-        int setCurrentCalibration(unsigned short val = 0x0A00);
-
+        int setCurrentCalibration(unsigned short val = 0x1AAA); //2mohmの場合0x0A00, 0.75mohmの場合0x1AAA
+        int setConfigResister(unsigned short config = 0x456F);  //0x456F=>0b 0100 010 101 101 111(datasheet pp21-23確認)
+        
     private:
         I2C &i2c;
         int i2c_addr;