21 lines
625 B
C
21 lines
625 B
C
// Question - Connect a key on P1.23 and LEDs on P0.4-0.11. WAP in EC to display the number of times the PUSH to OFF switch is pressed on LEDs.
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#include <LPC17xx.h>
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int main(){
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unsigned long x, count = 0;
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LPC_PINCON -> PINSEL0 = 0x0000<<8 ; // LED
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LPC_PINCON -> PINSEL3 = 0; // SWITCH
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LPC_GPIO0 -> FIODIR = 0xFF<<4; // LED
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LPC_GPIO1 -> FIODIR = 0 << 23; // SWITCH
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while(1){
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x = LPC_GPIO1 -> FIOPIN & 1 << 23; // Initial value to refer to
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if(!x){
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count = (count + 1)%255; // Counter
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LPC_GPIO0 -> FIOPIN = count << 4; // Modifying FIOPIN value to match count
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}
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}
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}
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