#ifdef __USE_CMSIS
#include "LPC11xx.h"
#endif
int main(void)
{ //Toggle a GPIO (FBD48 pin 23, PIO0_7, controls the LED on the LPC Expresso PCB)
LPC_SYSCON->SYSAHBCLKCTRL |= (1<<6); //enable clock GPIO (sec 3.5.14)
LPC_IOCON->PIO0_7 &= ~(0x10); //NOT REQUIRED, turn off pull up (sec 7.4.19)
LPC_GPIO0->DIR |= (1<<7); //set pin direction to output (sec 12.3.2)
LPC_GPIO0->DATA &= ~(1<<7); //set pin low (sec 12.3.1)
volatile unsigned int i = 0;
while(1)
{ //infinite loop
LPC_GPIO0->DATA |= (1<<7); //set pin high (sec 12.3.1)
for(i = 0; i < 0x0004FFFF; ++i); //arbitrary delay
LPC_GPIO0->DATA &= ~(1<<7); //set pin low (sec 12.3.1)
for(i = 0; i < 0x0004FFFF; ++i); //arbitrary delay
}
return 0 ;
}
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