When I am executing this code, the LED is ON by default whereas it should only be ON when switch is pressed. And when I press the switch, it turns off. Can anyone please explain me, what I am doing wrong with my code.
</ #include <lpc17xx.h>
#define SwitchPinNumber 11
#define LedPinNumber 6
void main()
{
uint32_t switchStatus;
SystemInit();
LPC_PINCON->PINSEL4 = 0x000000; //Configure the Pins for GPIO;
/* Configure the LED pin as output and SwitchPin as input */
LPC_GPIO2->FIODIR = ((1<<LedPinNumber) | (0<<SwitchPinNumber));
while(1)
/* Turn On all the leds and wait for one second */
switchStatus = (LPC_GPIO2->FIOPIN>>SwitchPinNumber) & 0x01 ; //Read switch status
if(switchStatus == 1)
LPC_GPIO2->FIOPIN = (1<<LedPinNumber);
}
else
LPC_GPIO2->FIOPIN = (0<<LedPinNumber);
} >
OK.
Firstly:
Look at what you've posted. Look at how you've posted it.
Did you read the information under http://www.keil.com/forum/tips.asp ?
It's terrible.
Then:
Did you read my previous post? did you actually understand it? Your second code snippet (aka mess) indicates that you didn't do at least one of those things
The code snippet is incomplete and has obvious things missing. Example, wtf is flag0? where do you define it? where do you initialise it?
Why are you initialising the UART within a loop like that?
In summary:
It's really not very good. My pre-teen daughter recognised some of the faults in what you had posted!