how to interrupt while loop in explorer 16
unsigned int count1 = 300;
unsigned int count2 = 300;
///////////////////////////////////////////////////////////////////////////////
int main(void)
{
// initialize the device
SYSTEM_Initialize();
while (1){
LATA = 0x00;
int i;
int j;
// Right to Left sequence
for(i=0; i<8; i++) {
LATA |= (1 << i);
delayFunc();
}
LATA = 0x00;
// Left to Right sequence
for(j=7; j>=-1; j--) {
LATA |= (1<<j);
delayFunc();
}
// Left to Right sequence if SW3 is pressed
if(PORTDbits.RD6 == 0) {
LATA = 0x00;
for(j=8; j>=-1; j--) {
LATA |= (1<<j);
delayFunc();
}
}
}
return -1;
}
void delayFunc(void)
{
int j,k;
int a;
for(j = 0; j < count1; j++)
{
for(k=0; k < count2; k++)
{
a = 0;
}
}
}
In order to interrupt the while loop in the Explorer 16, you can use interrupts.
1. First, configure the interrupt settings in the device initialization part of your code.
2. Enable the desired interrupt flag, such as INT0 or INT1, and set the interrupt priority and enable global interrupts.
3. Create an interrupt service routine (ISR) that will be executed when the interrupt occurs.
4. Inside the ISR, set a flag or perform any necessary actions to indicate that the interrupt has occurred.
5. Modify your while loop to check the flag or condition that indicates the interrupt has occurred.
6. If the flag or condition is true, break out of the while loop using the "break" statement.
Here's an example of how you can modify your code to interrupt the while loop:
```c
// Global flag to indicate interrupt occurrence
volatile bool interruptFlag = false;
// Interrupt Service Routine
void __interrupt() doInterrupt(void)
{
// Check which interrupt flag has triggered the interrupt
if (<interrupt_flag_condition>) {
// Set the flag to indicate interrupt occurrence
interruptFlag = true;
}
// Clear the interrupt flag
<clear_interrupt_flag>;
}
int main(void)
{
// initialize the device
SYSTEM_Initialize();
// Enable the desired interrupt flag and set interrupt priority
<enable_interrupt_flag>;
<set_interrupt_priority>;
// enable global interrupts
INTERRUPT_GlobalEnable();
while (1)
{
LATA = 0x00;
// ...your existing code...
// Check if the interrupt flag is set
if(interruptFlag)
{
// Clear the interrupt flag
interruptFlag = false;
// Break out of the while loop
break;
}
}
return -1;
}
```
Note: The specific implementation of interrupts may vary depending on the specific microcontroller being used in the Explorer 16.
To interrupt a while loop in the Explorer 16 code, you can use a break statement. Here's how you can do it:
1. Declare a flag variable at the top of the main function to keep track of the interrupt condition. For example, add the following line:
```c
int interruptFlag = 0;
```
2. Inside the while loop, check for the interrupt condition using an if statement. If the condition is met, set the interruptFlag to 1 and use the break statement to exit the loop. For example, modify the if statement as follows:
```c
if(PORTDbits.RD6 == 0) {
interruptFlag = 1;
break;
}
```
3. Replace the while loop condition `while (1)` with a condition that checks the interruptFlag. For example, change it to:
```c
while (!interruptFlag) {
// rest of the code
}
```
By implementing these changes, the while loop will continue until the interrupt condition is met, causing the interruptFlag to be set to 1 and breaking out of the loop.
To interrupt a while loop in the Explorer 16 code, you can use a conditional statement to check for the interrupt condition and break out of the loop. Here's how you can modify the code to achieve this:
1. Declare a variable to track the interrupt condition, let's call it `interruptFlag`. Set its initial value to 0.
2. Inside the while loop, add an if statement to check for the interrupt condition using `PORTDbits.RD6`. If it is pressed (equals 0), set `interruptFlag` to 1 and break out of the loop using `break;`.
3. After the while loop, add a check for the `interruptFlag`. If it's true, execute the desired code to handle the interrupt. In your case, it seems you want to repeat the Left to Right sequence again.
Here's the modified code:
```
// declare interrupt flag
unsigned int interruptFlag = 0;
int main(void)
{
// initialize the device
SYSTEM_Initialize();
while (1) {
LATA = 0x00;
int i;
int j;
// Right to Left sequence
for (i = 0; i < 8; i++) {
LATA |= (1 << i);
delayFunc();
}
LATA = 0x00;
// Left to Right sequence
for (j = 7; j >= -1; j--) {
LATA |= (1 << j);
delayFunc();
}
// Check for interrupt condition
if (PORTDbits.RD6 == 0) {
interruptFlag = 1;
break; // break out of the while loop
}
}
// Handle interrupt if flag is set
if (interruptFlag) {
LATA = 0x00;
for (j = 8; j >= -1; j--) {
LATA |= (1 << j);
delayFunc();
}
}
return -1;
}
```
Now, when the interrupt condition (`SW3` being pressed) is detected, the while loop will be interrupted and the Left to Right sequence will be repeated.