Andrew Ferguson
/
Ferguson_A2_Digital_Input
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main.cpp@2:af576070220a, 2022-10-06 (annotated)
- Committer:
- a_ferguson
- Date:
- Thu Oct 06 14:44:47 2022 +0000
- Revision:
- 2:af576070220a
- Parent:
- 1:c186d9b63164
- Child:
- 3:896a932d47fc
Pretty much everything works but sometimes it doesn't count a press if too quick.
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| a_ferguson | 0:1cf58db95ce6 | 1 | #include "mbed.h" |
| a_ferguson | 0:1cf58db95ce6 | 2 | |
| a_ferguson | 0:1cf58db95ce6 | 3 | Serial pc(USBTX,USBRX); //do not need when we aren't communicating with pc |
| a_ferguson | 1:c186d9b63164 | 4 | DigitalOut myled1(LED1); |
| a_ferguson | 1:c186d9b63164 | 5 | DigitalOut myled2(LED2); |
| a_ferguson | 0:1cf58db95ce6 | 6 | DigitalIn button(p17); // button attached to p17 |
| a_ferguson | 0:1cf58db95ce6 | 7 | |
| a_ferguson | 0:1cf58db95ce6 | 8 | int main() { |
| a_ferguson | 0:1cf58db95ce6 | 9 | |
| a_ferguson | 2:af576070220a | 10 | int currentstate=0; |
| a_ferguson | 2:af576070220a | 11 | int previousstate=0; |
| a_ferguson | 2:af576070220a | 12 | int counter=0; |
| a_ferguson | 2:af576070220a | 13 | |
| a_ferguson | 0:1cf58db95ce6 | 14 | while(1) { |
| a_ferguson | 2:af576070220a | 15 | |
| a_ferguson | 2:af576070220a | 16 | currentstate=button.read(); // set current state |
| a_ferguson | 2:af576070220a | 17 | |
| a_ferguson | 2:af576070220a | 18 | if (currentstate==1){ //blinks 1s interval when pressed |
| a_ferguson | 1:c186d9b63164 | 19 | myled2=!myled2; |
| a_ferguson | 1:c186d9b63164 | 20 | wait(1); |
| a_ferguson | 2:af576070220a | 21 | |
| a_ferguson | 2:af576070220a | 22 | if (currentstate==previousstate){ |
| a_ferguson | 2:af576070220a | 23 | } |
| a_ferguson | 2:af576070220a | 24 | |
| a_ferguson | 2:af576070220a | 25 | else{ // change in state adds counter |
| a_ferguson | 2:af576070220a | 26 | counter=counter+1; |
| a_ferguson | 2:af576070220a | 27 | pc.printf("count=%i \r\n",counter); |
| a_ferguson | 2:af576070220a | 28 | } |
| a_ferguson | 2:af576070220a | 29 | |
| a_ferguson | 1:c186d9b63164 | 30 | } //if |
| a_ferguson | 2:af576070220a | 31 | |
| a_ferguson | 2:af576070220a | 32 | else { //blinks 0.3s interval when released |
| a_ferguson | 1:c186d9b63164 | 33 | myled2=!myled2; |
| a_ferguson | 1:c186d9b63164 | 34 | wait(0.3); |
| a_ferguson | 2:af576070220a | 35 | |
| a_ferguson | 2:af576070220a | 36 | if (currentstate==previousstate){ |
| a_ferguson | 2:af576070220a | 37 | } |
| a_ferguson | 2:af576070220a | 38 | |
| a_ferguson | 2:af576070220a | 39 | else{ // change in state adds counter |
| a_ferguson | 2:af576070220a | 40 | counter=counter+1; |
| a_ferguson | 2:af576070220a | 41 | pc.printf("count=%i \r\n",counter); |
| a_ferguson | 2:af576070220a | 42 | } |
| a_ferguson | 2:af576070220a | 43 | |
| a_ferguson | 2:af576070220a | 44 | } //else |
| a_ferguson | 2:af576070220a | 45 | |
| a_ferguson | 2:af576070220a | 46 | if (counter==10){ // counter reaches 10 turns on led1 |
| a_ferguson | 2:af576070220a | 47 | myled1=1; |
| a_ferguson | 1:c186d9b63164 | 48 | } //if |
| a_ferguson | 2:af576070220a | 49 | |
| a_ferguson | 2:af576070220a | 50 | previousstate=currentstate; //set previous state |
| a_ferguson | 2:af576070220a | 51 | |
| a_ferguson | 1:c186d9b63164 | 52 | } //while |
| a_ferguson | 2:af576070220a | 53 | |
| a_ferguson | 1:c186d9b63164 | 54 | } //main |
