Diff: main.cpp

Revision:

0:bd5a3c76e81f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Feb 02 22:17:34 2016 +0000
@@ -0,0 +1,82 @@
+/*
+  LiquidCrystal Library - scrollDisplayLeft() and scrollDisplayRight()
+ Demonstrates the use a 16x2 LCD display.  The Hotboards_SpiLcd
+ library works with all LCD displays that are compatible with the
+ ST7032 driver presented on Spi Lcd board (http://www.hotboards.org).
+ This sketch prints "Hello World!" to the LCD and uses the
+ scrollDisplayLeft() and scrollDisplayRight() methods to scroll
+ the text.
+  The circuit:
+  *  BKL   -->  GND
+  *  VDD   -->  3.3v
+  *  GND   -->  GND
+  *  SCK   -->  PA_5
+  *  SI    -->  PA_6
+  *  CS    -->  PB_15
+  *  RS    -->  PB_14
+  *  RST   -->  PB_13
+ Library and example ported by Diego from Hotboards and originally created 
+ by David A. Mellis
+ library modified 5 Jul 2009
+ by Limor Fried (http://www.ladyada.net)
+ example added 9 Jul 2009
+ by Tom Igoe
+ modified 22 Nov 2010
+ by Tom Igoe
+ */
+
+#include "mbed.h"
+#include "Hotboards_SpiLcd.h"
+
+/* initialize an instance of SPI bus,setting the SPI pins*/
+SPI device(PA_7,PA_6,PA_5); /* SO, SI, SCK*/
+/* initialize the library with the numbers of the interface pins*/
+Hotboards_SpiLcd display( device, PB_15, PB_14, PB_13 ); /* SPI, CS, RS, RST */
+
+
+int main() 
+{
+    /* set the spi frequency to 5MHz*/
+    device.frequency(5000000);
+    /* initialize internal lcd controller:*/
+    display.init();
+    // Print a message to the LCD.
+    display.printf("hello, world!");
+    wait(1);
+    
+    while(1) 
+    {
+      // scroll 13 positions (string length) to the left
+      // to move it offscreen left:
+      for (int positionCounter = 0; positionCounter < 13; positionCounter++) 
+      {
+        // scroll one position left:
+        display.scrollDisplayLeft();
+        // wait a bit:
+        wait(0.2);
+      }
+
+      // scroll 29 positions (string length + display length) to the right
+      // to move it offscreen right:
+      for (int positionCounter = 0; positionCounter < 29; positionCounter++) 
+      {
+        // scroll one position right:
+        display.scrollDisplayRight();
+        // wait a bit:
+        wait(0.2);
+      }
+
+      // scroll 16 positions (display length + string length) to the left
+      // to move it back to center:
+      for (int positionCounter = 0; positionCounter < 16; positionCounter++) 
+      {
+       // scroll one position left:
+       display.scrollDisplayLeft();
+       // wait a bit:
+       wait(0.2);
+      }
+      
+      // delay at the end of the full loop:
+     wait(1);
+   }
+}