comparison projects/basic_blink/render.cpp @ 269:ac8eb07afcf5

Oxygen text added to each render.cpp file for the default projects. Text includes project explanation from Wiki, edited in places.

Empty project added as a default project.

Doxyfile updated. Each of the project locations added to INPUT configuration option. Consider just watching the whole project file so all new projects are automatically pulled through.

+/*
+ ____  _____ _        _    
+| __ )| ____| |      / \   
+|  _ \|  _| | |     / _ \  
+| |_) | |___| |___ / ___ \ 
+|____/|_____|_____/_/   \_\.io
+
+ */
+
+/*
+ *
+ * Andrew McPherson and Victor Zappi
+ * Queen Mary, University of London
+ */
+
+/**
+\example 2_digital_blink
+
+Blinking an LED
+---------------
+
+This sketch shows the simplest case of digital out. Connect an LED in series with
+a 470ohm resistor between P8_07 and ground. The led is blinked on and off by 
+setting the digital pin `HIGH` and `LOW` every interval seconds (set it in the 
+`render()` function).
+
+Firstly the pin mode must be set to output mode: 
+`pinModeFrame(context, 0, P8_07, OUTPUT);` in the `setup()` function. The output 
+of the digital pins is set by the following code: 
+`digitalWriteFrame(context, n, P8_07, status);` where status can be equal to 
+either `HIGH` or `LOW`. When set `HIGH` the pin will give 3.3V, when set to 
+`LOW` 0V.
+
+To keep track of elapsed time we have a sample counter count. When count reaches 
+a certain limit it switches state to either `HIGH` or `LOW` depending on its current 
+value. In this case the limit is `context->digitalSampleRate*interval` which 
+allows us to write the desired interval in seconds, stored in `interval`.
+*/
+
+
+
+
+
 #include <BeagleRT.h>
 #include <Utilities.h>
 #include <cmath>
 #include <rtdk.h>