// Demonstrates one way to create a double height display using Parola.
//
// Largely based on code shared by arduino.cc forum user Arek00, 26 Sep 2015.
// Video of running display can be seen at https://www.youtube.com/watch?v=7nPCIMVUo5g
//
// The upper and lower portions are managed as 2 zones 'stacked' on top of each other
// so that the module numbers are in the sequence shown below:
//
// * Modules (like FC-16) that can fit over each other with no gap
// n n-1 n-2 ... n/2+1 <- this direction top row
// n/2 ... 3 2 1 0 <- this direction bottom row
//
// * Modules (like Generic and Parola) that cannot fit over each other with no gap
// n/2+1 ... n-2 n-1 n -> this direction top row
// n/2 ... 3 2 1 0 <- this direction bottom row
//
// Each font displays letters for either top or bottom half of the message. Sending the
// same string to both zones creates the complete message
// on the display.
//
// NOTE: MD_MAX72xx library must be installed and confugured for the LED
// matrix type being used. Refer documentation included in the MD_MAX72xx
// library or see this link:
// https://majicdesigns.github.io/MD_MAX72XX/page_hardware.html
//
#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
#include "Font.h"
#if USE_GENERIC_HW || USE_PAROLA_HW
#define INVERT_UPPER_ZONE
#endif
#define DEBUG 0
// Define the number of devices we have in the chain and the hardware interface
// NOTE: These pin numbers will probably not work with your hardware and may
// need to be adapted
#define MAX_ZONES 2
#define ZONE_SIZE 4
#define MAX_DEVICES (MAX_ZONES * ZONE_SIZE)
#define SCROLL_SPEED 30
#define ZONE_UPPER 1
#define ZONE_LOWER 0
#define CLK_PIN 13
#define DATA_PIN 11
#define CS_PIN 10
// HARDWARE SPI
MD_Parola P = MD_Parola(CS_PIN, MAX_DEVICES);
// SOFTWARE SPI
//MD_Parola P = MD_Parola(DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);
#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
char *msg[] =
{
"Create double height displays using 2 custom fonts and 2 zones",
"Zone 0 for lower half",
"Zone 1 for upper half",
"BIG",
"ABCDEFGHIJKLMNOPQRSTUVWXYZ",
"abcdefghijklmnopqrstuvwxyz",
"0123456789",
"`!@#$%^&*()_+-={};:'\"<>?,./|\\{}",
"Download Parola at github.com/MajicDesigns",
"Watch the video on YouTube"
};
void setup(void)
{
// initialise the LED display
P.begin(MAX_ZONES);
// Set up zones for 2 halves of the display
// Each zone gets a different font, making up the top
// and bottom half of each letter
P.setZone(ZONE_LOWER, 0, ZONE_SIZE - 1);
P.setFont(ZONE_LOWER, BigFontLower);
P.setZone(ZONE_UPPER, ZONE_SIZE, MAX_DEVICES-1);
P.setFont(ZONE_UPPER, BigFontUpper);
P.setCharSpacing(P.getCharSpacing() * 2); // double height --> double spacing
#ifdef INVERT_UPPER_ZONE
P.setZoneEffect(ZONE_UPPER, true, PA_FLIP_UD);
P.setZoneEffect(ZONE_UPPER, true, PA_FLIP_LR);
#endif
#if DEBUG
Serial.begin(57600);
Serial.println("[Double Height demo start]");
#endif
}
void loop(void)
{
static uint8_t cycle = 0;
// Run the animation and then check if BOTH zones have
// completed. The animations are not the same length due
// to upper/lower effects being displayed differently.
P.displayAnimate();
if (P.getZoneStatus(ZONE_LOWER) && P.getZoneStatus(ZONE_UPPER))
{
#if DEBUG
Serial.println(cycle);
#endif
switch (cycle)
{
default:
P.setFont(ZONE_LOWER, BigFontLower);
P.setFont(ZONE_UPPER, BigFontUpper);
#ifdef INVERT_UPPER_ZONE
P.displayZoneText(ZONE_LOWER, msg[cycle], PA_LEFT, SCROLL_SPEED, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
P.displayZoneText(ZONE_UPPER, msg[cycle], PA_LEFT, SCROLL_SPEED, 0, PA_SCROLL_RIGHT, PA_SCROLL_RIGHT);
#else
P.displayZoneText(ZONE_LOWER, msg[cycle], PA_RIGHT, SCROLL_SPEED, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
P.displayZoneText(ZONE_UPPER, msg[cycle], PA_LEFT, SCROLL_SPEED, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
#endif
break;
case 1:
P.setFont(ZONE_LOWER, NULL);
P.setFont(ZONE_UPPER, BigFontUpper);
P.displayZoneText(ZONE_LOWER, msg[1], PA_CENTER, SCROLL_SPEED, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
P.displayZoneText(ZONE_UPPER, msg[3], PA_CENTER, SCROLL_SPEED, 0, PA_PRINT, PA_NO_EFFECT);
break;
case 2:
P.setFont(ZONE_LOWER, BigFontLower);
P.setFont(ZONE_UPPER, NULL);
P.displayZoneText(ZONE_LOWER, msg[3], PA_CENTER, SCROLL_SPEED, 0, PA_PRINT, PA_NO_EFFECT);
#ifdef INVERT_UPPER_ZONE
P.displayZoneText(ZONE_UPPER, msg[2], PA_CENTER, SCROLL_SPEED, 0, PA_SCROLL_RIGHT, PA_SCROLL_RIGHT);
#else
P.displayZoneText(ZONE_UPPER, msg[2], PA_CENTER, SCROLL_SPEED, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
#endif
break;
case 3:
P.setFont(ZONE_LOWER, BigFontLower);
P.setFont(ZONE_UPPER, BigFontUpper);
P.displayZoneText(ZONE_LOWER, msg[3], PA_CENTER, SCROLL_SPEED, 2000, PA_PRINT, PA_NO_EFFECT); // PA_SCROLL_LEFT, PA_SCROLL_LEFT);
P.displayZoneText(ZONE_UPPER, msg[3], PA_CENTER, SCROLL_SPEED, 2000, PA_PRINT, PA_NO_EFFECT); //PA_SCROLL_RIGHT, PA_SCROLL_RIGHT);
break;
}
// prepare for next pass
cycle = (cycle + 1) % ARRAY_SIZE(msg);
// synchronise the start
P.displayClear();
P.synchZoneStart();
}
}