Diff: main.cpp

Revision:

0:8eca3dc705c6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Feb 07 20:20:34 2020 +0000
@@ -0,0 +1,89 @@
+#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
+
+
+*/
+