Nicholas Outram
Task 3.4.4 Solution
main.cpp@1:caddcb47c9b4, 2017-07-13 (annotated)
- Committer:
- noutram
- Date:
- Thu Jul 13 14:51:23 2017 +0000
- Revision:
- 1:caddcb47c9b4
- Parent:
- 0:eebd090fb610
updated for mbed-os 5.5
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| noutram | 0:eebd090fb610 | 1 | #include "mbed.h" |
| noutram | 0:eebd090fb610 | 2 | |
| noutram | 0:eebd090fb610 | 3 | //Global objects |
| noutram | 0:eebd090fb610 | 4 | BusOut binaryOutput(D5, D6, D7); |
| noutram | 0:eebd090fb610 | 5 | |
| noutram | 0:eebd090fb610 | 6 | |
| noutram | 0:eebd090fb610 | 7 | //Main function |
| noutram | 0:eebd090fb610 | 8 | int main() { |
| noutram | 0:eebd090fb610 | 9 | |
| noutram | 0:eebd090fb610 | 10 | //Create a variable to hold the bit pattern |
| noutram | 0:eebd090fb610 | 11 | unsigned int u; |
| noutram | 0:eebd090fb610 | 12 | |
| noutram | 0:eebd090fb610 | 13 | while(1) { |
| noutram | 0:eebd090fb610 | 14 | |
| noutram | 0:eebd090fb610 | 15 | u = 1; //Set initial value 0 |
| noutram | 0:eebd090fb610 | 16 | int count = 0; |
| noutram | 0:eebd090fb610 | 17 | while (count++ < 3) { |
| noutram | 0:eebd090fb610 | 18 | binaryOutput = u; //Write to LEDs |
| noutram | 0:eebd090fb610 | 19 | u = u << 1; //Shift left 1 bit |
| noutram | 0:eebd090fb610 | 20 | wait(0.25); //Wait |
| noutram | 0:eebd090fb610 | 21 | } |
| noutram | 0:eebd090fb610 | 22 | |
| noutram | 0:eebd090fb610 | 23 | //At this point, the output is binary 100 |
| noutram | 0:eebd090fb610 | 24 | //Change to 010 |
| noutram | 0:eebd090fb610 | 25 | binaryOutput = 2; //The missing yellow state |
| noutram | 0:eebd090fb610 | 26 | wait(0.25); |
| noutram | 0:eebd090fb610 | 27 | |
| noutram | 0:eebd090fb610 | 28 | //The sequence can now repeat |
| noutram | 0:eebd090fb610 | 29 | } //end while(1) |
| noutram | 0:eebd090fb610 | 30 | } //end main |