Revision 2:cc5021b73dc1, committed 2020-07-31

Comitter:

kevinsullivan

Date:

Fri Jul 31 20:18:44 2020 +0000

Parent:

1:2e8c02d29418

Commit message:

lab q2_1

Changed in this revision

diff -r 2e8c02d29418 -r cc5021b73dc1 main.cpp
--- a/main.cpp	Sun Jul 19 19:46:59 2020 +0000
+++ b/main.cpp	Fri Jul 31 20:18:44 2020 +0000
@@ -1,20 +1,24 @@
 #include "mbed.h"
 Serial pc(USBTX, USBRX); // tx, rx
 PwmOut led(LED1);
-float brightness = 0.0;
+float brightness = 0.0; //brightness is a variable of type float(a real number)
+
 int main() {
- pc.printf("Press 'u' to turn LED1 brightness up, 'd' to turn it down\n");
- while(1) {
- char c = pc.getc();
- if((c == 'u') & (brightness < 0.5)) {
- brightness += 0.01;
+ pc.printf("Press 'u' to turn LED1 brightness up, 'd' to turn it down\n\r");//once off printf message
+ pc.printf(" '^' is printed each time up is selected\n\r");//once off printf message
+ pc.printf(" '<' is printed each time down is selected\n\r");//once off printf message
+ while(1) {   // "do forever" while true i.e. (1)
+ char c = pc.getc(); //defines a variable c of type char and sets it to character recieved from Tera Term
+ if((c == 'u') && (brightness < 0.5)) { // is c=u, and (bool AND) less than half the brightness
+ brightness += 0.01; // brightness = brightness + 0.01
  led = brightness;
  pc.putc('^');// using "^" for LED brightness up
+ 
  }
- if((c == 'd') & (brightness > 0.0)) {
- brightness -= 0.01;
+ if((c == 'd') && (brightness > 0.0)) {
+ brightness -= 0.01;//brightness = brightness - 0.01
  led = brightness;
- pc.putc('~');//using " ~ " for down LED brightness down
+ pc.putc('<');//using " < " for down LED brightness down
  }
  }
 }
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