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comparison projects/basic_button/render.cpp @ 285:5433c83ce04e Doxy prerelease

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Doxygen content added to more project render.cpp files and amended in others.
author Robert Jack <robert.h.jack@gmail.com>
date Tue, 17 May 2016 18:46:55 +0100
parents ac8eb07afcf5
children
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284:7bfb25a2e158 285:5433c83ce04e
17 \example 2_digital_button 17 \example 2_digital_button
18 18
19 Switching an LED on and off 19 Switching an LED on and off
20 --------------------------- 20 ---------------------------
21 21
22 This sketch brings together digital out with digital in. The program will read 22 This example brings together digital input and digital output. The program will read
23 a button and turn the LED on and off according to the state of the button. 23 a button and turn the LED on and off according to the state of the button.
24 24
25 - connect an LED in series with a 470ohm resistor between P8_07 and ground. 25 - connect an LED in series with a 470ohm resistor between P8_07 and ground.
26 - connect a 1k resistor to P9_03 (+3.3V), 26 - connect a 1k resistor to P9_03 (+3.3V),
27 - connect the other end of the resistor to both a button and P8_08 27 - connect the other end of the resistor to both a button and P8_08
32 value read at input P8_08. When the button is not pressed, P8_08 is `HIGH` and so 32 value read at input P8_08. When the button is not pressed, P8_08 is `HIGH` and so
33 P8_07 is set to `HIGH` as well, so that the LED conducts and emits light. When 33 P8_07 is set to `HIGH` as well, so that the LED conducts and emits light. When
34 the button is pressed, P8_08 goes `LOW` and P8_07 is set to `LOW`, turning off the LED. 34 the button is pressed, P8_08 goes `LOW` and P8_07 is set to `LOW`, turning off the LED.
35 35
36 As an exercise try and change the code so that the LED only turns on when 36 As an exercise try and change the code so that the LED only turns on when
37 the button is pressed 37 the button is pressed.
38 */ 38 */
39 39
40 40
41 #include <BeagleRT.h> 41 #include <BeagleRT.h>
42 #include <Utilities.h> 42 #include <Utilities.h>