I am using the following code to blink a LED 10 times and then stop. But it goes on blinking even after 10 counts. please let me know where i have gone wrong in the code
#include <stdio.h> #include <chipcon/hal.h> #include <chipcon/cc1010eb.h> #define Wait_Time 200 void main() { int a=0; // Set Port 1 Bit 2 as O/P halSetPortBitDir(1, 2, POUT); // Initialise Counter while(a!=10) { // Wait period between blinks halWait(Wait_Time, CC1010EB_CLKFREQ); //Toggle LED halSetPortBit(1, 2, FALSE); a++; } } //main
Most embedded environments are not like a PC where a program that exits main() implicitly or explicitly via a return statement or call to exit(), exits back to an operating system. You have to prevent main() from terminating by adding some kind of forever loop before main()'s closing brace. For example:
for (;;);
Hi Dan thanks for helping again. I tried putting a infinite loop just before the closing braces of main(), but the LED still blinks infdefinitely. I still cant figure out how to get this code fixed. please help
#include <stdio.h> #include <chipcon/hal.h> #include <chipcon/cc1010eb.h> #define Wait_Time 200 void main() { int a=0; // Set Port 1 Bit 2 as O/P halSetPortBitDir(1, 2, POUT); // Initialise Counter while(a!=10) { // Wait period between blinks halWait(Wait_Time, CC1010EB_CLKFREQ); //Toggle LED halSetPortBit(1, 2, FALSE); a++; } //A forever loop for (;;); } //main
"... the LED still blinks infdefinitely." Perhaps the watchdog is periodically resetting the MCU, causing your program to start over again. The watchdog timer is enabled by default. You need to either keep the watchdog happy or disable it.