Alexander Lang
A simple program to demonstrate how to use a RockerSW object on the 4D systems touch screen display with the mbed as a host microcontroller
This is a demonstration program on how to use a 4D systems touch screen display with the mbed as a host microcontroller. For more information please take a look at the corresponding blog post here:
http://langster1980.blogspot.co.uk/2014/07/mbed-4d-systems-display-tutorial-with.html
Here is a photo of the breadboard layout and a schematic:
Diff: main.cpp
- Revision:
- 1:f16b26f664f9
- Parent:
- 0:81f5d5b70036
--- a/main.cpp Fri Jul 04 18:28:38 2014 +0000
+++ b/main.cpp Fri Jul 04 18:38:04 2014 +0000
@@ -42,7 +42,7 @@
{
genieFrame Event;
lcd4d.genieDequeueEvent(&Event);
-
+
//event report from an object
if(Event.reportObject.cmd == GENIE_REPORT_EVENT) {
if (Event.reportObject.object == GENIE_OBJ_ROCKERSW) { // If the Reported Message was from a rocker switch
@@ -69,7 +69,7 @@
printf("SliderRead = %d \n\r", sliderRead); // Display the Slider0 value
flashRate = 0.01; // Set flash rate initially to 10 ms On / Off
flashRate = 1 - (flashRate * sliderRead); // Apply the value of slider0 object to flashRate
-
+
}
@@ -85,7 +85,7 @@
{
lcd4d.genieAttachEventHandler(&myGenieEventHandler); // Call the event handler for the 4D display
-
+
lcd4d.genieWriteContrast(0); // Set the display contrast to 0 initially
lcd4d.genieWriteContrast(15); // Set the display contrast to 15 (full brightness)
@@ -93,13 +93,13 @@
printf("Langsters's mbed Visi-Genie LED Flash demo \n\r"); // Display a welcome message on the serial monitor
while(1) { // initialise an infinite while loop
-
+
if(flag == 1) { // Check if rockerSW object has been activated
whiteLED = 1; // turn real LED ON
wait(flashRate); // keep LED on for a short period of time
whiteLED = 0; // turn real LED ON
wait(flashRate); // turn LED off for a short period of time
-
+
}
if(flag == 0) { // Check if rockerSW object has been deactivated