EWA ZALEWSKA
experiment 2.1 Serial Communications
main.cpp@0:60eaedd0e0c0, 2020-07-18 (annotated)
- Committer:
- t00215759
- Date:
- Sat Jul 18 13:59:56 2020 +0000
- Revision:
- 0:60eaedd0e0c0
question 1
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| t00215759 | 0:60eaedd0e0c0 | 1 | #include "mbed.h" |
| t00215759 | 0:60eaedd0e0c0 | 2 | |
| t00215759 | 0:60eaedd0e0c0 | 3 | Serial pc(USBTX, USBRX); // tx, rx |
| t00215759 | 0:60eaedd0e0c0 | 4 | PwmOut led(LED1); |
| t00215759 | 0:60eaedd0e0c0 | 5 | |
| t00215759 | 0:60eaedd0e0c0 | 6 | float brightness = 0.0; |
| t00215759 | 0:60eaedd0e0c0 | 7 | |
| t00215759 | 0:60eaedd0e0c0 | 8 | int main() { |
| t00215759 | 0:60eaedd0e0c0 | 9 | pc.printf("Press 'u' to turn LED1 brightness up, 'd' to turn it down\n\r"); |
| t00215759 | 0:60eaedd0e0c0 | 10 | |
| t00215759 | 0:60eaedd0e0c0 | 11 | while(1) { |
| t00215759 | 0:60eaedd0e0c0 | 12 | char c = pc.getc(); |
| t00215759 | 0:60eaedd0e0c0 | 13 | if((c == 'u') && (brightness < 0.5)) { |
| t00215759 | 0:60eaedd0e0c0 | 14 | brightness += 0.01; |
| t00215759 | 0:60eaedd0e0c0 | 15 | led = brightness; |
| t00215759 | 0:60eaedd0e0c0 | 16 | pc.putc('^'); |
| t00215759 | 0:60eaedd0e0c0 | 17 | } |
| t00215759 | 0:60eaedd0e0c0 | 18 | if((c == 'd') && (brightness > 0.0)) { |
| t00215759 | 0:60eaedd0e0c0 | 19 | brightness -= 0.01; |
| t00215759 | 0:60eaedd0e0c0 | 20 | led = brightness; |
| t00215759 | 0:60eaedd0e0c0 | 21 | pc.putc('v'); |
| t00215759 | 0:60eaedd0e0c0 | 22 | } |
| t00215759 | 0:60eaedd0e0c0 | 23 | |
| t00215759 | 0:60eaedd0e0c0 | 24 | } |
| t00215759 | 0:60eaedd0e0c0 | 25 | } |