Diff: main.cpp

Revision:

2:04dde3a9d171

Parent:

1:5968363c5d23

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jan 20 13:44:57 2017 +0000
@@ -0,0 +1,76 @@
+#include "mbed.h"
+#define pi 3.141592f
+#define d2r 0.01745329f
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~GPIO registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+AnalogIn    adc =   A0;                     //analog reading
+Serial      pc(D1, D0);                     //Serial reg
+PwmOut      led =   D13;                    //link leg
+AnalogOut   dac =   A2;                     //Note!!! Only for F446re, not aviable for MCU without DAC
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of GPIO registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~Varible registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+Ticker  TT1;                                //call a timer
+int     TimeCount = 0;                      //work as a clock
+float   SignalGenValue = 0.0f;              //value for DAC or PWM reference
+float   SignalProbeValue = 0.0f;            //value for ADC readed
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of Varible registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~Function registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+void init_IO();                         //initialize IO state
+void init_TIMER();                      //set TT_main{} rate
+void TT1_main();                        //timebase function rated by TT1
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of Function registor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~main funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+int main()
+{
+    init_IO();                          //initialized value
+    init_TIMER();                       //initialized Timer Inturrupt rate
+
+    while(1) {                          //main() loop
+    }
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of main funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~init_IO funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+void init_IO(void)                      //initialize
+{
+    led = 0.0f;
+    dac = 0.0f;
+    pc.baud(115200);                    //set baud rate
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of init_IO funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+
+
+
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~Timebase funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
+void init_TIMER()                       //set TTx_main{} rate
+{
+    TT1.attach_us(&TT1_main, 20000);    //0.02 sec
+}
+
+void TT1_main()                         //interrupt function by TT1
+{
+    //generator time reference
+    TimeCount = TimeCount + 1;
+    if(TimeCount > 50) {
+        TimeCount=0;
+    }
+    
+    //start generating signal output
+    SignalGenValue = pow(sin(pi*TimeCount/50.0f),2);
+    dac = SignalGenValue;               //Note!!! Only for F446re, not aviable for MCU without DAC
+    led = SignalGenValue;               //only for you to see directly from eyes
+    
+    //start reading analog signal 
+    SignalProbeValue = adc.read();      //acquire analog data
+    
+    //print out data
+    pc.printf("%.2f\r", SignalProbeValue);  //transfer data to PC
+}
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~end of Timebase funtion~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
\ No newline at end of file