Difference between revisions of "IO Operations"
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[[User:Amruta|Amruta]] ([[User talk:Amruta|talk]]) 11:24, 17 March 2015 (IST) | [[User:Amruta|Amruta]] ([[User talk:Amruta|talk]]) 11:24, 17 March 2015 (IST) | ||
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| + | |||
| + | =Basics= | ||
| + | =Code= | ||
| + | |||
| + | <syntaxhighlight> | ||
| + | |||
| + | |||
| + | #include "lpc17xx.h" // NXP Library containing all port abd register definations | ||
| + | #include "stdutils.h" // Explore Embedded library | ||
| + | |||
| + | #define LED 29 //P1.29 | ||
| + | #define SWITCH 28 //P1.28 | ||
| + | int main() | ||
| + | { | ||
| + | SystemInit(); | ||
| + | |||
| + | LPC_PINCON->PINSEL3 = 0x00; // Configure Pin as GPIO | ||
| + | util_BitSet(LPC_GPIO1->FIODIR,LED); // Set pin direction as output | ||
| + | util_BitClear (LPC_GPIO1->FIODIR,SWITCH); // Set pin direction as input | ||
| + | |||
| + | while(1) | ||
| + | { | ||
| + | if (util_IsBitCleared (LPC_GPIO1->FIOPIN,SWITCH)) // check if switch is pressed | ||
| + | util_BitSet (LPC_GPIO1->FIOSET,LED); // turn on LED | ||
| + | else | ||
| + | util_BitSet (LPC_GPIO1->FIOCLR,LED); // turn off LED | ||
| + | } | ||
| + | } | ||
Revision as of 11:53, 17 March 2015
Amruta (talk) 11:24, 17 March 2015 (IST)
Basics
Code
#include "lpc17xx.h" // NXP Library containing all port abd register definations #include "stdutils.h" // Explore Embedded library #define LED 29 //P1.29 #define SWITCH 28 //P1.28 int main() { SystemInit(); LPC_PINCON->PINSEL3 = 0x00; // Configure Pin as GPIO util_BitSet(LPC_GPIO1->FIODIR,LED); // Set pin direction as output util_BitClear (LPC_GPIO1->FIODIR,SWITCH); // Set pin direction as input while(1) { if (util_IsBitCleared (LPC_GPIO1->FIOPIN,SWITCH)) // check if switch is pressed util_BitSet (LPC_GPIO1->FIOSET,LED); // turn on LED else util_BitSet (LPC_GPIO1->FIOCLR,LED); // turn off LED } }