napoleon leoni / InterruptMask

InterruptMask library allows masking/unmasking GPIO interrupts (attached to either the rise or falling edges). It also allows clearing pending interrupts which may come handy before unmasking them.

InterruptMask.cpp@3:7b8a744ac27a, 2014-02-18 (annotated)

Committer:
nleoni
Date:
Tue Feb 18 15:44:49 2014 +0000
Revision:
3:7b8a744ac27a
Parent:
2:0e3b2bc65131
Child:
4:a34eddd0a2be
Changed pin input in constructor type from int to PinName type which the the enum type defined inside the mbed library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nleoni 0:9db76e6c71ce 1 #include "InterruptMask.h"
nleoni 0:9db76e6c71ce 2
nleoni 2:0e3b2bc65131 3 //default constructor required, should not be use will yield error
nleoni 0:9db76e6c71ce 4 InterruptMask::InterruptMask(void){
nleoni 2:0e3b2bc65131 5 exit(1);
nleoni 0:9db76e6c71ce 6 };
nleoni 2:0e3b2bc65131 7
nleoni 2:0e3b2bc65131 8 //Constructor to be used, initialize with any valid mbed pin (p5 thru p30 except pins 19-20)
nleoni 2:0e3b2bc65131 9 //you will need one InterruptMask for every pin you want ot have control over. The constructor
nleoni 2:0e3b2bc65131 10 //will only accept a valid pin, otherwise it will cause the prgram to exit with an error.
nleoni 3:7b8a744ac27a 11 InterruptMask::InterruptMask(PinName somePin){
nleoni 0:9db76e6c71ce 12 switch(somePin){
nleoni 0:9db76e6c71ce 13 case p5:
nleoni 0:9db76e6c71ce 14 case p6:
nleoni 0:9db76e6c71ce 15 case p7:
nleoni 0:9db76e6c71ce 16 case p8:
nleoni 0:9db76e6c71ce 17 case p9:
nleoni 0:9db76e6c71ce 18 case p10:
nleoni 0:9db76e6c71ce 19 case p11:
nleoni 0:9db76e6c71ce 20 case p12:
nleoni 0:9db76e6c71ce 21 case p13:
nleoni 0:9db76e6c71ce 22 case p14:
nleoni 0:9db76e6c71ce 23 case p15:
nleoni 0:9db76e6c71ce 24 case p16:
nleoni 0:9db76e6c71ce 25 case p17:
nleoni 0:9db76e6c71ce 26 case p18:
nleoni 0:9db76e6c71ce 27 //These pins are in Port 0 of the LPC1768, so the proper register is selected below
nleoni 0:9db76e6c71ce 28 IOIntEnF = &(LPC_GPIOINT->IO0IntEnF);
nleoni 0:9db76e6c71ce 29 IOIntEnR = &(LPC_GPIOINT->IO0IntEnR);
nleoni 0:9db76e6c71ce 30 IOIntClr = &(LPC_GPIOINT->IO0IntClr);
nleoni 0:9db76e6c71ce 31 this->mPin=somePin; //assign pin to internal member variable
nleoni 0:9db76e6c71ce 32 mask=~(1<<( (this->mPin)-P0_0));
nleoni 0:9db76e6c71ce 33 unmask=~mask;
nleoni 0:9db76e6c71ce 34 break;
nleoni 0:9db76e6c71ce 35 case p21:
nleoni 0:9db76e6c71ce 36 case p22:
nleoni 0:9db76e6c71ce 37 case p23:
nleoni 0:9db76e6c71ce 38 case p24:
nleoni 0:9db76e6c71ce 39 case p25:
nleoni 0:9db76e6c71ce 40 case p26:
nleoni 0:9db76e6c71ce 41 case p27:
nleoni 0:9db76e6c71ce 42 case p28:
nleoni 0:9db76e6c71ce 43 case p29:
nleoni 0:9db76e6c71ce 44 case p30:
nleoni 0:9db76e6c71ce 45 //These pins are in Port 0 of the LPC1768, so the proper register is selected below
nleoni 0:9db76e6c71ce 46 IOIntEnF = &(LPC_GPIOINT->IO2IntEnF);
nleoni 0:9db76e6c71ce 47 IOIntEnR = &(LPC_GPIOINT->IO2IntEnR);
nleoni 0:9db76e6c71ce 48 IOIntClr = &(LPC_GPIOINT->IO2IntClr);
nleoni 0:9db76e6c71ce 49 this->mPin=somePin; //assign pin to internal member variable
nleoni 0:9db76e6c71ce 50 mask=~(1<<( (this->mPin)-P2_0));
nleoni 0:9db76e6c71ce 51 unmask=~mask;
nleoni 0:9db76e6c71ce 52 break;
nleoni 0:9db76e6c71ce 53 default:
nleoni 0:9db76e6c71ce 54 exit(1);
nleoni 0:9db76e6c71ce 55 }
nleoni 0:9db76e6c71ce 56 }
nleoni 0:9db76e6c71ce 57
nleoni 2:0e3b2bc65131 58
nleoni 2:0e3b2bc65131 59 //This method will mask (disable) any rising edge interrupts of the specified pin
nleoni 0:9db76e6c71ce 60 void InterruptMask::maskIntR(void){
nleoni 0:9db76e6c71ce 61 (*(this->IOIntEnR)) &= this->mask;
nleoni 0:9db76e6c71ce 62 }
nleoni 0:9db76e6c71ce 63
nleoni 2:0e3b2bc65131 64 //This method will mask (disable) any faling edge interrupts of the specified pin
nleoni 0:9db76e6c71ce 65 void InterruptMask::maskIntF(void){
nleoni 0:9db76e6c71ce 66 (*(this->IOIntEnF)) &= this->mask;
nleoni 0:9db76e6c71ce 67 }
nleoni 0:9db76e6c71ce 68
nleoni 2:0e3b2bc65131 69 //This method will unmask (enable) any rising edge interrupts of the specified pin
nleoni 0:9db76e6c71ce 70 void InterruptMask::unMaskIntR(void){
nleoni 0:9db76e6c71ce 71 (*(this->IOIntEnR)) |= this->unmask;
nleoni 0:9db76e6c71ce 72 }
nleoni 0:9db76e6c71ce 73
nleoni 2:0e3b2bc65131 74 //This method will unmask (enable) any falling edge interrupts of the specified pin
nleoni 0:9db76e6c71ce 75 void InterruptMask::unMaskIntF(void){
nleoni 0:9db76e6c71ce 76 (*(this->IOIntEnF)) |= this->unmask;
nleoni 0:9db76e6c71ce 77 }
nleoni 0:9db76e6c71ce 78
nleoni 2:0e3b2bc65131 79 //This method will clear any pending interrupts of the specified pin
nleoni 0:9db76e6c71ce 80 void InterruptMask::ClrInt(void){
nleoni 0:9db76e6c71ce 81 (*(this->IOIntClr)) |= this->unmask;
nleoni 0:9db76e6c71ce 82 }
nleoni 0:9db76e6c71ce 83