Diff: PCA9538.h

Revision:

0:d0e0b38e5991

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PCA9538.h	Wed Feb 02 21:20:33 2011 +0000
@@ -0,0 +1,299 @@
+/*
+   \file PCA9538.h
+   \version: 1.0
+   
+   \brief Este fichero contiene class para control de PCA9538 creando pin digitales
+          de salida o entrada, o control por registro (8-bits).
+   
+   \web www.micros-designs.com.ar
+   \date 31/01/11
+   
+ *- Version Log --------------------------------------------------------------*
+ *   Fecha       Autor                Comentarios                             *
+ *----------------------------------------------------------------------------*
+ * 31/01/11      Suky        Original                                         *
+ *----------------------------------------------------------------------------*/ 
+///////////////////////////////////////////////////////////////////////////
+////                                                                   ////
+////                                                                   ////
+////        (C) Copyright 2011 www.micros-designs.com.ar               ////
+//// Este código puede ser usado, modificado y distribuido libremente  ////
+//// sin eliminar esta cabecera y  sin garantía de ningún tipo.        ////
+////                                                                   ////
+////                                                                   ////
+/////////////////////////////////////////////////////////////////////////// 
+
+/*                                EXAMPLE 
+#include "mbed.h"
+#include "PCA9538.h"
+
+//PCA9538 MyExpand(p9,p10,0x70,p21); // sda,scl,address,Interrupts
+DigitalOut myled(LED1);
+DigitalOut myled2(LED2);
+PCA9538PinOut myled3(exp_p4,p9,p10,0x70); // pin del PCA,sda,scl,address
+PCA9538PinOut myled4(exp_p7,p9,p10,0x70);
+PCA9538PinIn  mypuls(exp_p0,p9,p10,0x70);
+//void vISRExpand(void);
+
+int main() {
+    //MyExpand.vInit(0x0F,&vISRExpand);
+    //MyExpand.vWrite(0x00);
+    while(1) {
+        if(mypuls==0){
+            myled2=1;
+            wait(0.3);
+            myled2=0;
+            wait(0.3);
+        }else{
+            myled3=1;
+            myled4=1;
+            myled=myled3;
+            wait(0.5);
+            myled = 0;
+            myled3=0;
+            myled4=0;
+            wait(0.5);
+        }
+    }
+}
+
+
+//void vISRExpand(void){
+//
+//    myled2=!myled2;
+//    MyExpand.vWrite(MyExpand.cRead()<<4);
+//}
+*/
+#include "mbed.h"
+
+enum ExpPinName{
+    exp_p0=0,
+    exp_p1,
+    exp_p2,
+    exp_p3,
+    exp_p4,
+    exp_p5,
+    exp_p6,
+    exp_p7,    
+};
+
+class PCA9538PinOut{
+    public:
+        PCA9538PinOut(ExpPinName Pin,PinName PIN_SDA,PinName PIN_SCL,unsigned char Address);
+        void vWrite(int value);
+        int read();
+        #ifdef MBED_OPERATORS
+        PCA9538PinOut& operator= (int value);
+        operator int();
+        #endif
+    protected:
+        ExpPinName _Pin;
+        unsigned char _Address;
+        I2C Bus;
+};
+
+PCA9538PinOut::PCA9538PinOut(ExpPinName Pin,PinName PIN_SDA,PinName PIN_SCL,unsigned char Address)
+    :Bus(PIN_SDA,PIN_SCL),_Pin(Pin),_Address(Address<<1){
+    unsigned char Temp;
+    
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x03);
+    Bus.start();
+    Bus.write(_Address | 0x01);
+    Temp=Bus.read(0);
+    Bus.stop();
+    
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x03);
+    Bus.write((~(0x01<<_Pin))&Temp);
+    Bus.stop();  
+}
+
+void PCA9538PinOut::vWrite(int value){
+    unsigned char Temp;
+    
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x01);
+    Bus.start();
+    Bus.write(_Address | 0x01);
+    Temp=Bus.read(0);
+    Bus.stop();
+    
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x01);
+    if(value==0){
+        Bus.write((~(0x01<<_Pin))&Temp);
+    }else{
+        Bus.write((0x01<<_Pin)|Temp);
+    }    
+    Bus.stop();
+}
+
+int PCA9538PinOut::read(){
+    unsigned char Temp;
+    
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x01);
+    Bus.start();
+    Bus.write(_Address | 0x01);
+    Temp=Bus.read(0);
+    Bus.stop();
+    
+    return((Temp>>_Pin)&0x01);
+}
+
+PCA9538PinOut& PCA9538PinOut::operator= (int value){
+    vWrite(value);    
+}
+
+PCA9538PinOut::operator int(){
+
+    return(read());
+}
+//*****************************************************************************
+class PCA9538PinIn{
+    public:
+        PCA9538PinIn(ExpPinName Pin,PinName PIN_SDA,PinName PIN_SCL,unsigned char Address);
+        int read();
+        #ifdef MBED_OPERATORS
+        operator int();
+        #endif
+    protected:
+        ExpPinName _Pin;
+        unsigned char _Address;
+        I2C Bus;
+};
+
+PCA9538PinIn::PCA9538PinIn(ExpPinName Pin,PinName PIN_SDA,PinName PIN_SCL,unsigned char Address)
+    :Bus(PIN_SDA,PIN_SCL),_Pin(Pin),_Address(Address<<1){
+    unsigned char Temp;
+    
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x03);
+    Bus.start();
+    Bus.write(_Address | 0x01);
+    Temp=Bus.read(0);
+    Bus.stop();
+    
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x03);
+    Bus.write((0x01<<_Pin)|Temp);
+    Bus.stop();  
+}
+
+int PCA9538PinIn::read(){
+    unsigned char Temp;
+    
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x00);
+    Bus.start();
+    Bus.write(_Address | 0x01);
+    Temp=Bus.read(0);
+    Bus.stop();
+    
+    return((Temp>>_Pin)&0x01);
+}
+
+PCA9538PinIn::operator int(){
+
+    return(read());
+}
+//*****************************************************************************
+class PCA9538{
+    public:
+        PCA9538(PinName PIN_SDA,PinName PIN_SCL,unsigned char Address,PinName PIN_INT=NC);
+        void vInit(unsigned char Dir,void (*fptr)(void));
+        void vSetConfiguration(unsigned char Dir);
+        void vSetPolarity(unsigned char Pol);
+        unsigned char cRead(void);
+        void vWrite(unsigned char Data);
+        void vEnableSetInterrupt(void (*fptr)(void));
+        void vDisableInterrupt(void);
+        bool bReadPinINT(void);
+    protected:
+        I2C Bus;
+        InterruptIn PCA9538_Event;
+        DigitalIn _PIN_INT;
+        unsigned char _Address;
+};
+
+PCA9538::PCA9538(PinName PIN_SDA,PinName PIN_SCL,unsigned char Address,PinName PIN_INT)
+    : Bus(PIN_SDA,PIN_SCL),_PIN_INT(PIN_INT),PCA9538_Event(PIN_INT){
+    _Address=Address<<1;
+}
+
+void PCA9538::vInit(unsigned char Dir,void (*fptr)(void)){
+
+    //Bus.frequency(400000);
+    
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x03);
+    Bus.write(Dir);
+    Bus.stop();
+    
+    if (fptr!=NULL){
+        PCA9538_Event.fall(fptr);
+    }
+}
+
+void PCA9538::vSetConfiguration(unsigned char Dir){
+    
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x03);
+    Bus.write(Dir);
+    Bus.stop();
+}
+
+void PCA9538::vSetPolarity(unsigned char Pol){
+
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x02);
+    Bus.write(Pol);
+    Bus.stop();
+}
+
+unsigned char PCA9538::cRead(void){
+    unsigned char Temp;
+
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x00);
+    Bus.start();
+    Bus.write(_Address | 0x01);
+    Temp=Bus.read(0);
+    Bus.stop();
+    
+    return(Temp);
+}
+
+void PCA9538::vWrite(unsigned char Data){
+
+    Bus.start();
+    Bus.write(_Address & 0xFE);
+    Bus.write(0x01);
+    Bus.write(Data);
+    Bus.stop();
+}
+
+void PCA9538::vEnableSetInterrupt(void (*fptr)(void)){
+    PCA9538_Event.fall(fptr);
+}
+
+void PCA9538::vDisableInterrupt(void){
+    PCA9538_Event.fall(NULL);
+}
+
+bool PCA9538::bReadPinINT(void){
+    return(_PIN_INT);
+}