University of Plymouth - Stages 1, 2 and 3
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Task134Solution
Task 1.3.4 Solution
Fork of Task134Solution by
main.cpp@2:e0c813e72cde, 2019-09-11 (annotated)
- Committer:
- noutram
- Date:
- Wed Sep 11 13:28:17 2019 +0000
- Revision:
- 2:e0c813e72cde
- Parent:
- 0:b248b671f558
2019
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
noutram | 0:b248b671f558 | 1 | //This is known as a “header file” |
noutram | 0:b248b671f558 | 2 | //In short, this copies and pastes the text file |
noutram | 0:b248b671f558 | 3 | //mbed.h into this code |
noutram | 0:b248b671f558 | 4 | #include "mbed.h" |
noutram | 0:b248b671f558 | 5 | |
noutram | 0:b248b671f558 | 6 | #define kRED 1 |
noutram | 0:b248b671f558 | 7 | #define kYELLOW 2 |
noutram | 0:b248b671f558 | 8 | #define kGREEN 4 |
noutram | 0:b248b671f558 | 9 | |
noutram | 0:b248b671f558 | 10 | BusOut binaryOutput(D7, D6, D5); //Outputs as an integer |
noutram | 0:b248b671f558 | 11 | |
noutram | 0:b248b671f558 | 12 | //The main function - all executable C / C++ |
noutram | 0:b248b671f558 | 13 | //applications have a main function. This is |
noutram | 0:b248b671f558 | 14 | //out entry point in the software |
noutram | 0:b248b671f558 | 15 | Ticker T; |
noutram | 0:b248b671f558 | 16 | |
noutram | 0:b248b671f558 | 17 | int main() { |
noutram | 0:b248b671f558 | 18 | |
noutram | 0:b248b671f558 | 19 | binaryOutput = 0; |
noutram | 0:b248b671f558 | 20 | |
noutram | 0:b248b671f558 | 21 | // ALL the code is contained in a |
noutram | 0:b248b671f558 | 22 | // “while loop" |
noutram | 0:b248b671f558 | 23 | |
noutram | 0:b248b671f558 | 24 | // THIS IS NOT AN IDEAL SOLUTION. HOWEVER IT IS SIMPLE |
noutram | 0:b248b671f558 | 25 | |
noutram | 0:b248b671f558 | 26 | |
noutram | 0:b248b671f558 | 27 | while(1) |
noutram | 0:b248b671f558 | 28 | { |
noutram | 0:b248b671f558 | 29 | //The code between the { curly braces } |
noutram | 0:b248b671f558 | 30 | //is the code that is repeated |
noutram | 0:b248b671f558 | 31 | |
noutram | 0:b248b671f558 | 32 | //STATE 1 (R) |
noutram | 0:b248b671f558 | 33 | binaryOutput = kRED; |
noutram | 0:b248b671f558 | 34 | wait(1.0); |
noutram | 0:b248b671f558 | 35 | |
noutram | 0:b248b671f558 | 36 | //STATE 2 (RA) |
noutram | 0:b248b671f558 | 37 | binaryOutput = kRED + kYELLOW; |
noutram | 0:b248b671f558 | 38 | wait(1.0); |
noutram | 0:b248b671f558 | 39 | |
noutram | 0:b248b671f558 | 40 | //STATE 3 (G) |
noutram | 0:b248b671f558 | 41 | binaryOutput = kGREEN; |
noutram | 0:b248b671f558 | 42 | wait(1.0); |
noutram | 0:b248b671f558 | 43 | |
noutram | 0:b248b671f558 | 44 | //STATES 4-7 (Flashing A) |
noutram | 0:b248b671f558 | 45 | binaryOutput = kYELLOW; |
noutram | 0:b248b671f558 | 46 | wait(0.25); |
noutram | 0:b248b671f558 | 47 | binaryOutput = 0; |
noutram | 0:b248b671f558 | 48 | wait(0.25); |
noutram | 0:b248b671f558 | 49 | binaryOutput = kYELLOW; |
noutram | 0:b248b671f558 | 50 | wait(0.25); |
noutram | 0:b248b671f558 | 51 | binaryOutput = 0; |
noutram | 0:b248b671f558 | 52 | wait(0.25); |
noutram | 0:b248b671f558 | 53 | |
noutram | 0:b248b671f558 | 54 | } |
noutram | 0:b248b671f558 | 55 | } |