File content as of revision 0:8eca3dc705c6:

#include "mbed.h
"
DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);
int main() {
 while(1) {
 led1 = 1;
 led2 = 0;
 led3 = 0;
 led4 = 0;
 wait(0.25);
 led1 = 0;
 led2 = 1;
 led3 = 0;
 led4 = 0;
 wait(0.25);
 led1 = 0;
 led2 = 0;
 led3 = 1;
 led4 = 0;
 wait(0.25);
 led1 = 0;
 led2 = 0;
 led3 = 0;
 led4 = 1;
 wait(0.25);

}

}

/*
Using digital outputs, create a program to produce a
“Knightrider” LED sweep effect with the on-board LEDs.
*/

#include "mbed.h"
DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);
int main() {
 while(1) {
 led1 = 1; led2 = 0; led3 = 0; led4 = 0;
 wait(0.25);
 led1 = 0; led2 = 1; led3 = 0; led4 = 0;
 wait(0.25);
 led1 = 0; led2 = 0; led3 = 1; led4 = 0;
 wait(0.25);
 led1 = 0; led2 = 0; led3 = 0; led4 = 1;
 wait(0.25);
 led1 = 0; led2 = 0; led3 = 1; led4 = 0;
 wait(0.25);
 led1 = 0; led2 = 1; led3 = 0; led4 = 0;
 wait(0.25);
 }
}

#include "mbed.h"
BusOut myleds(LED4, LED3, LED2, LED1);
char x=1;
int main() {
 while(1) {
 for(int i=0; i<3; i++) { // x = a << b then x = a*2^b;
 x = x << 1; // x=1,2,4,8 or x=0001,0010,0100,1000
 myleds=x; // sweep left
 wait(0.2);
 }
 for(int i=0; i<3; i++) { // x = a >> b then x = a/2^b;
 x = x >> 1; // x=8,4,2,1 or x=1000,0100,0010,0001
 myleds=x; // sweep right
 wait(0.2);
 }
 }
}


/*
LCD https://os.mbed.com/media/uploads/robt/mbed_course_notes_-_parallel_comms.pdf
I2C https://os.mbed.com/media/uploads/robt/mbed_course_notes_-_serial_i2c.pdf
SPI https://os.mbed.com/media/uploads/robt/mbed_course_notes_-_serial_spi.pdf
Memory and data management  https://os.mbed.com/media/uploads/robt/mbed_course_notes_-_memory_and_data.pdf
Timers and interrupts   https://os.mbed.com/media/uploads/robt/mbed_course_notes_-_timers_and_interrupts.pdf


*/