Modify some code comments

In file "SenseLED.c"
2016-09-03 21:23:08 +08:00
parent 5a616281b0
commit 6e6a80a5e6
3 changed files with 3 additions and 2 deletions
@@ -22,11 +22,11 @@ int main(void)

 	while(1){
 		
-		if(digitalRead(sensorPin) == HIGH){ //sensor has pressed down
+		if(digitalRead(sensorPin) == HIGH){ //if read sensor for high level
 			digitalWrite(ledPin, HIGH);   //led on
 			printf("led on...\n");
 		}
-		else {				//sensor has released 
+		else {				
 			digitalWrite(ledPin, LOW);   //led off
 			printf("...led off\n");
 		}
@@ -4,6 +4,7 @@
 # Author      : freenove
 # modification: 2016/07/13
 ########################################################################
+import RPi.GPIO as GPIO
 import Keypad       #import module Keypad
 ROWS = 4        # number of rows of the Keypad
 COLS = 4        #number of columns of the Keypad