This program makes a PID control and the values por control action are entered by matrix keypad 4x4 interface.

Dependencies:   FPointer TextLCD keypad mbed

Files at this revision

API Documentation at this revision

Comitter:
lcorralesc1
Date:
Sun Dec 15 15:40:22 2013 +0000
Commit message:
This program makes a PID control and the values por control action are entered by matrix keypad 4x4 interface.

Changed in this revision

FPointer.lib Show annotated file Show diff for this revision Revisions of this file
TextLCD.lib Show annotated file Show diff for this revision Revisions of this file
keypad.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file
diff -r 000000000000 -r 54e8dab91b77 FPointer.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FPointer.lib	Sun Dec 15 15:40:22 2013 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/AjK/code/FPointer/#56e309e76c19
diff -r 000000000000 -r 54e8dab91b77 TextLCD.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TextLCD.lib	Sun Dec 15 15:40:22 2013 +0000
@@ -0,0 +1,1 @@
+https://mbed.org/users/javiernegrette/code/TextLCD/#419979c1e228
diff -r 000000000000 -r 54e8dab91b77 keypad.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/keypad.lib	Sun Dec 15 15:40:22 2013 +0000
@@ -0,0 +1,1 @@
+https://mbed.org/users/yoonghm/code/keypad/#e48ba5b4c497
diff -r 000000000000 -r 54e8dab91b77 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Dec 15 15:40:22 2013 +0000
@@ -0,0 +1,240 @@
+//Programa para hacer control PID simple, ingresa parámetros con teclado 4x4. Imprime resultados en LCD 16x2
+
+#include "mbed.h"
+#include "TextLCD.h" 
+#include"keypad.h" //Librería del teclado 4x4
+#include"FPointer.h"  //Librería complementaria para libreria keypad
+
+TextLCD lcd(PTB10, PTB11, PTE2, PTE3, PTE4, PTE5);  // rs, e, d4-d7
+Keypad keypad(PTA2,PTD4,PTD3,PTD7,PTA13,PTD5,PTD0,PTD2); //Entradas del teclado
+
+AnalogIn Vin(PTB0);  //Voltaje de alimentación
+AnalogOut Vout(PTE30); //Marcar la salida analógica
+
+//ASIGNACION DE  VARIABLES
+Timer t;
+int cero;
+int flag;
+int q;
+int k;
+int C1=0x0E;    //configurar el lcd para mostrar el guin bajo
+int C2=0x0C;    //configurar el lcd para QUITAR el guion bajo
+float sp=0;       //set point
+float kp=0;       //ganancia proporcional
+float ki=0;       //ganancia integral
+float kd=0;       //ganancia derivativa
+int ind=0;      //vector de caracteres.
+float err, med, yr, ap, ai, ad, err_v, cycle; //Variable de control PID
+float pid;
+
+//MATRIZ DEL TECLADO
+float  Keytable[] = {1,2,3,11,
+                   4,5,6,12,
+                   7,8,9,13,
+                   0,0,0,0};
+                   
+//Se crea una función que incremente los valores
+void increment(int j){             
+if(j==0){
+        if (q!=1 && sp<10){
+        sp=ind;
+        q=1;
+        }
+        else{
+         sp=10*sp+ind;
+         }
+         if(sp>999)sp=999;
+        lcd.locate(3,0); lcd.printf("   ");
+        lcd.locate(3,0); lcd.printf("%.0f",sp);
+        
+      }
+else if(j==1){
+        if (q!=1 && kp<10){
+        kp=ind;
+        q=1;
+        }
+        else{
+         kp=10*kp+ind;
+         }
+         if(kp>999)kp=999;
+        lcd.locate(11,0); lcd.printf("   ");
+        lcd.locate(11,0); lcd.printf("%.0f",kp);
+      }
+else if(j==2){
+        if (q!=1 && ki<10){
+        ki=ind;
+        q=1;
+        }
+        else{
+         ki=10*ki+ind;
+         }
+         if(ki>999)ki=999;
+        lcd.locate(3,1); lcd.printf("   ");
+        lcd.locate(3,1); lcd.printf("%.0f",ki);  
+      }
+else{
+        if (q!=1 && kd<10){
+        kd=ind;
+        q=1;
+        }
+        else{
+         kd=10*kd+ind;
+         }
+         if(kd>999)kd=999;
+        lcd.locate(11,1); lcd.printf("   ");
+        lcd.locate(11,1); lcd.printf("%.0f",kd);
+    }
+    ind=0; cero=0;
+}
+
+uint32_t cbAfterInput(uint32_t index) {
+    ind=Keytable[index];
+    cero=index;
+    return 0;
+}
+
+void def_posicion(int j){
+    if (j==0){
+    lcd.locate(3,0); lcd.printf("%.0f",sp);
+    lcd.locate(3,0); 
+    }
+    else if(j==1){
+    lcd.locate(11,0);   lcd.printf("%.0f",kp);
+    lcd.locate(11,0);   
+    }
+    else if (j==2){
+    lcd.locate(3,1); lcd.printf("%.0f",ki);
+    lcd.locate(3,1); 
+    }
+    else {
+    lcd.locate(11,1);   lcd.printf("%.0f",kd);
+    lcd.locate(11,1);  
+    }
+}
+
+//Dado que hay parámetros que no varía en el display en esta parte del código, se crea una función que los mantenga.
+void star_patch1(void){ 
+lcd.cls();
+lcd.locate(8,0);
+lcd.printf("Kp=%.0f",kp);
+lcd.locate(0,1);
+lcd.printf("Ki=%.0f",ki);
+lcd.locate(8,1);
+lcd.printf("Kd=%.0f",kd);
+lcd.writeCommand(C1);   //cursor se vea y sea intermitente
+lcd.locate(0,0); 
+lcd.printf("Sp=%.0f",sp);
+}
+
+void star_patch2(void){  // uso nuevamente función que imprime los caracteres que no van a variar en el display
+lcd.writeCommand(C2);
+lcd.cls();
+lcd.printf("Iniciamos el PID |m|"); 
+wait(2);
+lcd.cls();
+lcd.printf("Er%=f",err);
+lcd.locate(8,0);    lcd.printf("Me=%.0f",med); 
+lcd.locate(0,1);    lcd.printf("Sp=%.0f",sp);
+lcd.locate(8,1);    lcd.printf("Co=%.0f",pid);
+wait(3);
+}
+
+int main(){
+ini:
+ind=0;
+star_patch1();
+    keypad.CallAfterInput(&cbAfterInput);
+    keypad.Start();
+ini1:
+  if(ind==12){
+    if (k<3) k++;
+    else k=0;
+    def_posicion(k);
+    ind=0;
+    q=0;
+  }
+  if(ind==13){
+  ind=0;
+  goto PID;
+  }
+  if(ind==11){
+    if (k==0){
+    sp=0;
+    lcd.locate(3,0); lcd.printf("   ");
+    lcd.locate(3,0); lcd.printf("%.0f",sp);
+    }
+    else if(k==1){
+    kp=0;
+    lcd.locate(11,0); lcd.printf("   ");  
+    lcd.locate(11,0); lcd.printf("%.0f",kp);
+    }
+    else if (k==2){
+    ki=0;
+    lcd.locate(3,1); lcd.printf("   ");
+    lcd.locate(3,1); lcd.printf("%.0f",ki);
+    }
+    else {
+    kd=0;
+    lcd.locate(11,1);  lcd.printf("   "); 
+    lcd.locate(11,1);  lcd.printf("%.0f",kd);
+    }
+    q=0; ind=0; 
+  }
+  if (ind!=0 && ind!=12 && ind!=13 && ind!=11 || cero==13 ){
+  increment(k);
+  } 
+  goto ini1;
+    
+PID:    
+    star_patch2();
+    
+    while (1){
+    
+    med=Vin.read()*1000;
+    err =sp-med;
+    ap = kp*err;           
+    ai =(ki*0.001*err)+ai;    //calculo de la integral del error
+    // VERIFICAMOS QUE LA ACCION INTEGRAL NO SEA MUY GRANDE!!!
+    if(ai>0.5){
+       ai=0.5;
+       }
+    ad = kd*(err-err_v); //calculo de la accion derivativa
+    pid =(ap+ai+ad);
+    
+    //MOSTRAMOS LAS VARIABLES
+    if (pid > 999)pid=1000; 
+    if (pid<0)pid=0;
+    
+    
+    Vout.write(pid/1000);
+    if(flag==0){
+    t.start();
+    flag=1;
+    }
+    if (t>0.3){
+    lcd.locate(3,0);
+    lcd.printf("     ");
+    lcd.locate(3,0);
+    lcd.printf("%.0f",err);
+    lcd.locate(11,0);
+    lcd.printf("     ");
+    lcd.locate(11,0);
+    lcd.printf("%.0f",med);
+    lcd.locate(3,1);
+    lcd.printf("     ");
+    lcd.locate(3,1);
+    lcd.printf("%.0f",sp);
+    lcd.locate(11,1);
+    lcd.printf("     ");
+    lcd.locate(11,1);
+    lcd.printf("%.2f ",pid/1000);
+    t.reset();
+    flag=0;
+    wait(.3);
+    }
+    
+    //ACTUALIZACION DE LAS VARIABLES
+    err_v = err;
+    if(ind==13)goto ini;
+    }
+}
\ No newline at end of file
diff -r 000000000000 -r 54e8dab91b77 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun Dec 15 15:40:22 2013 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/a9913a65894f
\ No newline at end of file