Hotboards MX / Mbed 2 deprecated Hotboards_SpiLcd_Scroll

This sketch prints "Hello World!" to the LCD and uses the scrollDisplayLeft() and scrollDisplayRight() methods to scroll the text.

Dependencies:   Hotboards_SpiLcd mbed

main.cpp@0:bd5a3c76e81f, 2016-02-02 (annotated)

Committer:
Hotboards
Date:
Tue Feb 02 22:17:34 2016 +0000
Revision:
0:bd5a3c76e81f
First release: Hotboards_SpiLcd_Scroll

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Hotboards 0:bd5a3c76e81f 1 /*
Hotboards 0:bd5a3c76e81f 2 LiquidCrystal Library - scrollDisplayLeft() and scrollDisplayRight()
Hotboards 0:bd5a3c76e81f 3 Demonstrates the use a 16x2 LCD display. The Hotboards_SpiLcd
Hotboards 0:bd5a3c76e81f 4 library works with all LCD displays that are compatible with the
Hotboards 0:bd5a3c76e81f 5 ST7032 driver presented on Spi Lcd board (http://www.hotboards.org).
Hotboards 0:bd5a3c76e81f 6 This sketch prints "Hello World!" to the LCD and uses the
Hotboards 0:bd5a3c76e81f 7 scrollDisplayLeft() and scrollDisplayRight() methods to scroll
Hotboards 0:bd5a3c76e81f 8 the text.
Hotboards 0:bd5a3c76e81f 9 The circuit:
Hotboards 0:bd5a3c76e81f 10 * BKL --> GND
Hotboards 0:bd5a3c76e81f 11 * VDD --> 3.3v
Hotboards 0:bd5a3c76e81f 12 * GND --> GND
Hotboards 0:bd5a3c76e81f 13 * SCK --> PA_5
Hotboards 0:bd5a3c76e81f 14 * SI --> PA_6
Hotboards 0:bd5a3c76e81f 15 * CS --> PB_15
Hotboards 0:bd5a3c76e81f 16 * RS --> PB_14
Hotboards 0:bd5a3c76e81f 17 * RST --> PB_13
Hotboards 0:bd5a3c76e81f 18 Library and example ported by Diego from Hotboards and originally created
Hotboards 0:bd5a3c76e81f 19 by David A. Mellis
Hotboards 0:bd5a3c76e81f 20 library modified 5 Jul 2009
Hotboards 0:bd5a3c76e81f 21 by Limor Fried (http://www.ladyada.net)
Hotboards 0:bd5a3c76e81f 22 example added 9 Jul 2009
Hotboards 0:bd5a3c76e81f 23 by Tom Igoe
Hotboards 0:bd5a3c76e81f 24 modified 22 Nov 2010
Hotboards 0:bd5a3c76e81f 25 by Tom Igoe
Hotboards 0:bd5a3c76e81f 26 */
Hotboards 0:bd5a3c76e81f 27
Hotboards 0:bd5a3c76e81f 28 #include "mbed.h"
Hotboards 0:bd5a3c76e81f 29 #include "Hotboards_SpiLcd.h"
Hotboards 0:bd5a3c76e81f 30
Hotboards 0:bd5a3c76e81f 31 /* initialize an instance of SPI bus,setting the SPI pins*/
Hotboards 0:bd5a3c76e81f 32 SPI device(PA_7,PA_6,PA_5); /* SO, SI, SCK*/
Hotboards 0:bd5a3c76e81f 33 /* initialize the library with the numbers of the interface pins*/
Hotboards 0:bd5a3c76e81f 34 Hotboards_SpiLcd display( device, PB_15, PB_14, PB_13 ); /* SPI, CS, RS, RST */
Hotboards 0:bd5a3c76e81f 35
Hotboards 0:bd5a3c76e81f 36
Hotboards 0:bd5a3c76e81f 37 int main()
Hotboards 0:bd5a3c76e81f 38 {
Hotboards 0:bd5a3c76e81f 39 /* set the spi frequency to 5MHz*/
Hotboards 0:bd5a3c76e81f 40 device.frequency(5000000);
Hotboards 0:bd5a3c76e81f 41 /* initialize internal lcd controller:*/
Hotboards 0:bd5a3c76e81f 42 display.init();
Hotboards 0:bd5a3c76e81f 43 // Print a message to the LCD.
Hotboards 0:bd5a3c76e81f 44 display.printf("hello, world!");
Hotboards 0:bd5a3c76e81f 45 wait(1);
Hotboards 0:bd5a3c76e81f 46
Hotboards 0:bd5a3c76e81f 47 while(1)
Hotboards 0:bd5a3c76e81f 48 {
Hotboards 0:bd5a3c76e81f 49 // scroll 13 positions (string length) to the left
Hotboards 0:bd5a3c76e81f 50 // to move it offscreen left:
Hotboards 0:bd5a3c76e81f 51 for (int positionCounter = 0; positionCounter < 13; positionCounter++)
Hotboards 0:bd5a3c76e81f 52 {
Hotboards 0:bd5a3c76e81f 53 // scroll one position left:
Hotboards 0:bd5a3c76e81f 54 display.scrollDisplayLeft();
Hotboards 0:bd5a3c76e81f 55 // wait a bit:
Hotboards 0:bd5a3c76e81f 56 wait(0.2);
Hotboards 0:bd5a3c76e81f 57 }
Hotboards 0:bd5a3c76e81f 58
Hotboards 0:bd5a3c76e81f 59 // scroll 29 positions (string length + display length) to the right
Hotboards 0:bd5a3c76e81f 60 // to move it offscreen right:
Hotboards 0:bd5a3c76e81f 61 for (int positionCounter = 0; positionCounter < 29; positionCounter++)
Hotboards 0:bd5a3c76e81f 62 {
Hotboards 0:bd5a3c76e81f 63 // scroll one position right:
Hotboards 0:bd5a3c76e81f 64 display.scrollDisplayRight();
Hotboards 0:bd5a3c76e81f 65 // wait a bit:
Hotboards 0:bd5a3c76e81f 66 wait(0.2);
Hotboards 0:bd5a3c76e81f 67 }
Hotboards 0:bd5a3c76e81f 68
Hotboards 0:bd5a3c76e81f 69 // scroll 16 positions (display length + string length) to the left
Hotboards 0:bd5a3c76e81f 70 // to move it back to center:
Hotboards 0:bd5a3c76e81f 71 for (int positionCounter = 0; positionCounter < 16; positionCounter++)
Hotboards 0:bd5a3c76e81f 72 {
Hotboards 0:bd5a3c76e81f 73 // scroll one position left:
Hotboards 0:bd5a3c76e81f 74 display.scrollDisplayLeft();
Hotboards 0:bd5a3c76e81f 75 // wait a bit:
Hotboards 0:bd5a3c76e81f 76 wait(0.2);
Hotboards 0:bd5a3c76e81f 77 }
Hotboards 0:bd5a3c76e81f 78
Hotboards 0:bd5a3c76e81f 79 // delay at the end of the full loop:
Hotboards 0:bd5a3c76e81f 80 wait(1);
Hotboards 0:bd5a3c76e81f 81 }
Hotboards 0:bd5a3c76e81f 82 }