Diff: main.cpp

Revision:

3:9af1bd67c5f8

Parent:

2:387240c58110

Child:

4:143b93e499a3

--- a/main.cpp	Sat Jun 13 06:34:11 2015 +0000
+++ b/main.cpp	Sun Jun 14 02:44:14 2015 +0000
@@ -5,89 +5,108 @@
 #include "math.h"
 #include "SB1602E.h"
 
-#define ROTATE_PER_REVOLUTIONS  24 //QEI 1 rotate by count
-#define THR 560  /PTH pull up register value
-#define THB 3380  //PTH B number
-#define THCR 10000 //25C PTH register
-#define OV_LL 0.0 //PID calcurate output value 0.0 = 0%
-#define OV_HL 1.0 //PID calcurate output value 1.0 = 100%
-#define SV_LL 0.0 //PID setpoint % value for lo limit
-#define SV_HL 100.0 //PID setpoint % value for high limit
+/* PID constant initialize Kc, Ti, Td, interval */
 #define P 1.0 //propotional band
 #define I 0.2 //Integral
 #define D 0.1 //Devide
 #define RATE 0.1 //update time sec
-#define Bias 0.2 //control output bias
-#define InitialSP 50.0 // PID initial setpoint
-#define RangeSPL 30.0 //calcurate celcius range
-#define RangeSPH 120.0 //same above
-
-//Kc, Ti, Td, interval
 PID TIC(P, I, D, RATE);
 
 //GPIO initilaize
 AnalogIn THAI(dp4);
 PwmOut   out(dp1);
 DigitalOut led1(dp14),led2(dp28);
-DigitalIn Run(dp17,PullUp);
+DigitalIn Run(dp17,PullDown);
 
-float temp_sv_input;
+/*Power on first setpoint temperature */
+#define InitialSP 50.0 // PID initial setpoint
+float temp_sv_input = InitialSP;
+
 double temp_pv,temp_cal;
 char *init_massage = "Welcome!";
 
-//init_massage = 'Hello';
-//Rotary encode pin, pinmode and sppecification instance
+
+/*Rotary encode pin, pinmode and sppecification instance */
+#define ROTATE_PER_REVOLUTIONS  24 //QEI 1 rotate by count
 QEI wheel(dp11, PullUp, dp13, PullUp,NC, ROTATE_PER_REVOLUTIONS, QEI::X2_ENCODING);
-//LCD I2C pin asign
+
+/*LCD I2C pin initialize */
 SB1602E lcd(dp5, dp27, init_massage);  //  SDA, SCL
 
 
-
-void TempCal_thread(void const *args) {
+void TempCal_thread(void const *args)
+{
     while (true) {
- //input for change to 0 to 100% range by 50C to 120C
- temp_sv_input = wheel.getPulses() * 0.5 + RangeSPL;
- if (temp_sv_input <= RangeSPL){
-     temp_sv_input = RangeSPL;
-                               }
-     else if (temp_sv_input >= RangeSPH){
-              temp_sv_input = RangeSPH;
-                                        } 
- temp_cal = THAI.read();
-//six order polynomial
- temp_pv =-0.7964*pow(temp_cal,6.0) - 2.5431*pow(temp_cal,5.0) +63.605*pow(temp_cal,4.0) - 274.1*pow(temp_cal,3.0) + 522.57*pow(temp_cal,2.0) - 539.26*temp_cal + 405.76;
+        /*input for change to 0 to 100% range by 30C to 120C */
+#define RangeSPL 30.0 //calcurate celcius range
+#define RangeSPH 120.0 //same above
+        /*Temperature setpoint low high range */
+        temp_sv_input = wheel.getPulses() * 0.5 + RangeSPL;
+        if (temp_sv_input <= RangeSPL) {
+            temp_sv_input = RangeSPL;
+        } else if (temp_sv_input >= RangeSPH) {
+            temp_sv_input = RangeSPH;
+        }
+        temp_cal = THAI.read();
+
+
+        /*six order polynomial calculation value
+        Thermister pull up resiter 560R
+        Thermister B value 3380K
+        Thermister Resistance 10K ohm at 25C
+        */
+        temp_pv =-0.7964*pow(temp_cal,6.0) - 2.5431*pow(temp_cal,5.0) +63.605*pow(temp_cal,4.0) - 274.1*pow(temp_cal,3.0) + 522.57*pow(temp_cal,2.0) - 539.26*temp_cal + 405.76;
         Thread::wait(500);
 
 
-//Insert LCD code
-     lcd.printf(0, "Temp SP   %.1f\n", temp_sv_input);
-     lcd.printf(1, "Temp PV   %.1f\n", temp_pv);     
-                 }
-                                        }
- 
-int main(){
-Thread thread(TempCal_thread);
-    while (1){
-  //Analog input from 50.0C to 120.0C
-  TIC.setInputLimits(SV_LL, SV_HL);
-  //Pwm output from 0.0 to 1.0
-  TIC.setOutputLimits(OV_LL, OV_HL);
-  //If there's a bias.
-  TIC.setBias(Bias);
-  TIC.setMode(Run);
-  //We want the process variable to be 1.7V
-  TIC.setSetPoint(temp_sv_input);
- 
-  if (Run == 1){
-                out = OV_LL;
-                }
-  else if (Run == 0){ 
-    //Update the process variable.
-    TIC.setProcessValue(temp_cal);
-    //Set the new output.
-    out = TIC.compute();
-                    }
-    //Wait for another loop calculation.
-    Thread::wait(RATE);
-             }
-          }
\ No newline at end of file
+        /*LCD Display section */
+        lcd.printf(0, "Temp SP   %.1f\n", temp_sv_input);
+        lcd.printf(1, "Temp PV   %.1f\n", temp_pv);
+    }
+}
+
+
+
+int main()
+{
+    /* call Tmeperature calculate section */
+    Thread thread(TempCal_thread);
+    //LCD contrast set from 00 to 3f 64resolution defult set is 32step
+#define LCDCont 0x32 //LCD contrast set from 00 to 3f 64resolution defult set is 32step
+    lcd.contrast(LCDCont);
+
+
+    while (1) {
+        /*Analog input from 30.0C to 120.0C by 0% to 100% */
+#define SV_LL 0.0 //PID setpoint % value for lo limit
+#define SV_HL 100.0 //PID setpoint % value for high limit
+        /* TIC PID setpoit limit set */
+        TIC.setInputLimits(SV_LL, SV_HL);
+
+        /* Output from 0.0 to 1.0*/
+#define OV_LL 0.0 //PID calcurate output value 0.0 = 0%
+#define OV_HL 1.0 //PID calcurate output value 1.0 = 100%
+        /* TIC PID control output limit set */
+        TIC.setOutputLimits(OV_LL, OV_HL);
+
+        /* TIC PID control output bias */
+#define Bias 0.2 //control output bias
+        TIC.setBias(Bias);
+        /* TIC PID control mode set 0=Stop 1=Auto*/
+        TIC.setMode(Run);
+        /* TIC PID setpoint temperature read */
+        TIC.setSetPoint(temp_sv_input);
+
+        /* TIC PID output control */
+        if (Run == 0) {
+            out = OV_LL;
+        } else if (Run == 1) {
+            /* TIC PID read process value */
+            TIC.setProcessValue(temp_cal);
+            //PID calculate output.
+            out = TIC.compute();
+        }
+        //Wait for another loop calculation.
+        Thread::wait(RATE);
+    }
+}
\ No newline at end of file