Val Glynn
/
2_1_Original_Code
CA 2.1 Serial communications Original Code
main.cpp@0:beba585396a2, 2020-07-26 (annotated)
- Committer:
- vmg
- Date:
- Sun Jul 26 20:47:26 2020 +0000
- Revision:
- 0:beba585396a2
CA 2.1 Serial Communications Original Code
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
vmg | 0:beba585396a2 | 1 | #include "mbed.h" |
vmg | 0:beba585396a2 | 2 | |
vmg | 0:beba585396a2 | 3 | Serial pc(USBTX, USBRX); // tx, rx |
vmg | 0:beba585396a2 | 4 | PwmOut led(LED1); |
vmg | 0:beba585396a2 | 5 | |
vmg | 0:beba585396a2 | 6 | float brightness = 0.0; |
vmg | 0:beba585396a2 | 7 | |
vmg | 0:beba585396a2 | 8 | int main() { |
vmg | 0:beba585396a2 | 9 | pc.printf("Press 'u' to turn LED1 brightness up, 'd' to turn it down\n"); |
vmg | 0:beba585396a2 | 10 | |
vmg | 0:beba585396a2 | 11 | while(1) { |
vmg | 0:beba585396a2 | 12 | char c = pc.getc(); |
vmg | 0:beba585396a2 | 13 | if((c == 'u') && (brightness < 0.5)) { |
vmg | 0:beba585396a2 | 14 | brightness += 0.01; |
vmg | 0:beba585396a2 | 15 | led = brightness; |
vmg | 0:beba585396a2 | 16 | } |
vmg | 0:beba585396a2 | 17 | if((c == 'd') && (brightness > 0.0)) { |
vmg | 0:beba585396a2 | 18 | brightness -= 0.01; |
vmg | 0:beba585396a2 | 19 | led = brightness; |
vmg | 0:beba585396a2 | 20 | } |
vmg | 0:beba585396a2 | 21 | |
vmg | 0:beba585396a2 | 22 | } |
vmg | 0:beba585396a2 | 23 | } |
vmg | 0:beba585396a2 | 24 |