C Program Blinks external LEDs using GPIOs and plays tones using pwm

How to write a C Program Blinks external LEDs using GPIOs and plays tones using pwm in C programming Language ?

Solution For C Program:
/*C Program Blinks external LEDs using GPIOs and plays tones using pwm*/

C Program turnLEDOn to Drives Forward Until It Finds The Line

How to write a C Program to Find The Line in C Programming Language ?

Solution For C Program:

LED ON OFF For One Sec/Count and Display on the Attached Serial Monitor

Turns on an LED on for one second, then off for one second, repeatedly. Counts and displays the count on the attached serial monitor

1. /* Sketch uses 13,808 bytes (12%) of program storage space. Maximum is 108,000 bytes.
2.    Global variables use 2,592 bytes of dynamic memory.
3.   Turns on an LED on for one second, then off for one second, repeatedly.
4.   Counts and displays the count on the attached serial monitor
5.  */
6. int n = 0;
9. void setup() {                
10.   // initialize the digital pin as an output.
11.   pinMode(33, OUTPUT);
12.   // Initialize virtual COM over USB on Maple Mini
13.   Serial.begin(9600);  // BAUD has no effect on USB serial: placeholder for physical UART
14.   // wait for serial monitor to be connected.
15.   while (!(Serial.isConnected() && (Serial.getDTR() || Serial.getRTS())))
16.   {
17.     digitalWrite(33,!digitalRead(33));// Turn the LED from off to on, or on to off
18.     delay(100);         // fast blink
19.   }
20.   Serial.println("Blink LED & count Demo");
21. }
23. void loop() {
24.   digitalWrite(33, HIGH);   // set the LED on
25.   //delay(5);              // wait for a second
26.   digitalWrite(33, LOW);    // set the LED off
27.   Serial.print("Loop #: ");
28.   n++;
29.   Serial.println(n);
30.    
31.   //delay(5);              // wait
32. }

Pushbutton LED Code in C

Pushbutton LED Code in C

intbuttonState = 0;

void setup() {

 // initialize the LED pin as an output:

pinMode(13, OUTPUT);

 // initialize the pushbutton pin as an input:

pinMode(11, INPUT);

}

void loop() {

 // read the state of the pushbutton value:

buttonState = digitalRead(11);

 // check if the pushbutton is pressed.

 // if it is, the buttonState is HIGH:

if (buttonState == HIGH) {

 // turn LED on:

digitalWrite(13, HIGH);

 } else {

 // turn LED off:

digitalWrite(13, LOW);

 }

}

ACLK (32768 Hz) to generate a one second timer and toggles an LED

How to Write a C Program to Real Time Clock (One Second Timer) to Use ACLK (32768 Hz) to generate a one second timer and toggles an LED in C Programming Language ?

Solution:
/* Real Time Clock (One Second Timer)
 * Description: Uses ACLK (32768 Hz) to generate a one second timer and toggles an LED.
 */