Diff: main.cpp

Revision:

0:1bf58c6ad114

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jul 17 10:37:19 2020 +0000
@@ -0,0 +1,46 @@
+/* ADC TUTORIAL BASIC PART-1
+NOTE : CLASS --> AnalogIn
+Object return value between 0 to 1
+If 5 V system and you try to read 2.5 V from ADC PIN than OP = 0.5
+PLEASE NOTE : MBED USE 3.3 Vref
+*/
+
+//PROGRAM_CREATED BY :  -- radhey04ec@gmail.com
+//Hardware : STM32-NUCLEO-64
+//MBED : OS PLATFORM
+
+
+//This program is dedicated to 
+// INA-225 TEXAS INSTRUMENT BOARDS TO AMPLIFY LOW VOLTAGE SIGNAL WITH GAIN 200
+//SHUNT RESISTOR = 0.6 Ohm
+//Vref : 3.3 
+// I (current) = ((((ADC O/P - Offset)) * 3.3) *200 ) / 0.6) * 1000      mA
+
+
+#include "mbed.h"
+
+AnalogIn ANG(PC_3); //Port pin PC_3 last pin for ADC -- Create object
+
+int main()
+{
+    float AARAY[10],SUM=0;
+    
+    while(1)
+    {
+        for(int i =0;i <10 ; i++)  //Array to make result smoother
+        {
+            AARAY[i] = ANG.read();  //Read the data
+            ThisThread::sleep_for(20);  //Thread sleep for make ADC ready for next result
+            SUM = SUM + AARAY[i]; //Store result
+            } 
+        float value = (SUM /10);  //Finding Average value 
+        
+        float current = (((((((value)) * 3.3)-0.28)/200)/0.6)*1000);  //Finding current
+        
+        printf("\n Current (mA) = %f",current);  //Print data on Serial console -- I used CoolTerm
+        
+        ThisThread::sleep_for(250); //Thread sleep 
+        
+        SUM = 0;  //At the end sum must be zero
+}
+}
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