forum1828.cpp

00001 /**
00002  * @file forum1828.cpp
00003  * @see http://mbed.org/forum/mbed/topic/1828
00004  * @code
00005 #include "mbed.h"
00006 
00007 #define P0_22_SEL_MASK    ~(3UL << 12)
00008 #define P0_22_SET_MASK    (1UL << 22)
00009 #define P0_22_CLR_MASK    ~(p15_SET_MASK)
00010 #define P0_22_AS_OUTPUT   LPC_PINCON->PINSEL1&=P0_22_SEL_MASK;LPC_GPIO0->FIODIR|=P0_22_SET_MASK
00011 #define P0_22_AS_INPUT    LPC_GPIO0->FIOMASK &= P0_22_CLR_MASK; 
00012 #define P0_22_SET         LPC_GPIO0->FIOSET = P0_22_SET_MASK
00013 #define P0_22_CLR         LPC_GPIO0->FIOCLR = P0_22_SET_MASK
00014 #define P0_22_IS_SET      (bool)(LPC_GPIO0->FIOPIN & P0_22_SET_MASK)
00015 #define P0_22_IS_CLR      !(P0_22_IS_SET)
00016 #define P0_22_MODE(x)     LPC_PINCON->PINMODE1&=P0_22_SEL_MASK;LPC_PINCON->PINMODE1|=((x&0x3)<<12)
00017 
00018 DigitalOut myled(LED1);
00019 DigitalOut led2(LED2);
00020 InterruptIn mybool(P0_22);
00021 
00022 void led2on(void) {
00023     led2 = 1;
00024 }
00025  
00026 void led2off(void) {
00027     led2 = 0;
00028 }   
00029 
00030 int main() {
00031 
00032     // Setup InterruptIn as normal.
00033     mybool.mode(PullUp);
00034     mybool.rise(&led2on);
00035     mybool.fall(&led2off);
00036     
00037     // Now cheat, manually switch it to an output.
00038     P0_22_AS_OUTPUT;
00039 
00040     while(1) {
00041         myled = 1;
00042         P0_22_SET; // Set the bool and led2on() is called.
00043         wait(0.2);
00044         
00045         myled = 0;
00046         P0_22_CLR; // Clear the bool and led2off() is called.
00047         wait(0.2);
00048     }
00049 }
00050  
00051  * @endcode
00052  */
00053 
00054 #ifdef FORUM_1828
00055 
00056 /**
00057  * @see http://mbed.org/forum/mbed/topic/1828 
00058  */
00059 
00060 #include "mbed.h"
00061 
00062 #define P0_22_SEL_MASK    ~(3UL << 12)
00063 #define P0_22_SET_MASK    (1UL << 22)
00064 #define P0_22_CLR_MASK    ~(p15_SET_MASK)
00065 #define P0_22_AS_OUTPUT   LPC_PINCON->PINSEL1&=P0_22_SEL_MASK;LPC_GPIO0->FIODIR|=P0_22_SET_MASK
00066 #define P0_22_AS_INPUT    LPC_GPIO0->FIOMASK &= P0_22_CLR_MASK; 
00067 #define P0_22_SET         LPC_GPIO0->FIOSET = P0_22_SET_MASK
00068 #define P0_22_CLR         LPC_GPIO0->FIOCLR = P0_22_SET_MASK
00069 #define P0_22_IS_SET      (bool)(LPC_GPIO0->FIOPIN & P0_22_SET_MASK)
00070 #define P0_22_IS_CLR      !(P0_22_IS_SET)
00071 #define P0_22_MODE(x)     LPC_PINCON->PINMODE1&=P0_22_SEL_MASK;LPC_PINCON->PINMODE1|=((x&0x3)<<12)
00072 
00073 DigitalOut myled(LED1);
00074 DigitalOut led2(LED2);
00075 InterruptIn mybool(P0_22);
00076 
00077 void led2on(void) {
00078     led2 = 1;
00079 }
00080  
00081 void led2off(void) {
00082     led2 = 0;
00083 }   
00084 
00085 int main() {
00086 
00087     // Setup InterruptIn as normal.
00088     mybool.mode(PullUp);
00089     mybool.rise(&led2on);
00090     mybool.fall(&led2off);
00091     
00092     // Now cheat, manually switch it to an output.
00093     P0_22_AS_OUTPUT;
00094 
00095     while(1) {
00096         myled = 1;
00097         P0_22_SET; // Set the bool and led2on() is called.
00098         wait(0.2);
00099         
00100         myled = 0;
00101         P0_22_CLR; // Clear the bool and led2off() is called.
00102         wait(0.2);
00103     }
00104 }
00105 
00106 #endif