// Use the MD_MAX72XX library to Print some text on the display
//
// Demonstrates the use of the library to print text.
//
// User can enter text on the serial monitor and this will display as a
// message on the display.
#include <MD_MAX72xx.h>
#include <SPI.h>
#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW//Note will usually be FC16_HW for Real hardware
#define MAX_DEVICES 4
#define CLK_PIN 13 // or SCK
#define DATA_PIN 11 // or MOSI
#define CS_PIN 10 // or SS
// SPI hardware interface
MD_MAX72XX disp = MD_MAX72XX(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);
// Arbitrary pins
//MD_MAX72XX mx = MD_MAX72XX(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);
// Text parameters
#define CHAR_SPACING 1 // pixels between characters
// Global message buffers shared by Serial and Scrolling functions
#define BUF_SIZE 8
char message[BUF_SIZE] = "Hello!";
int temp, hum, pres;
String tempString, humString, presString;
void printText(uint8_t modStart, uint8_t modEnd, char *pMsg)
// Print the text string to the LED matrix modules specified.
// Message area is padded with blank columns after printing.
{
uint8_t state = 0;
uint8_t curLen;
uint16_t showLen;
uint8_t cBuf[8];
int16_t col = ((modEnd + 1) * COL_SIZE) - 1;
disp.control(modStart, modEnd, MD_MAX72XX::UPDATE, MD_MAX72XX::OFF);
do // finite state machine to print the characters in the space available
{
switch(state)
{
case 0: // Load the next character from the font table
// if we reached end of message, reset the message pointer
if (*pMsg == '\0')
{
showLen = col - (modEnd * COL_SIZE); // padding characters
state = 2;
break;
}
// retrieve the next character form the font file
showLen = disp.getChar(*pMsg++, sizeof(cBuf)/sizeof(cBuf[0]), cBuf);
curLen = 0;
state++;
// !! deliberately fall through to next state to start displaying
case 1: // display the next part of the character
disp.setColumn(col--, cBuf[curLen++]);
// done with font character, now display the space between chars
if (curLen == showLen)
{
showLen = CHAR_SPACING;
state = 2;
}
break;
case 2: // initialize state for displaying empty columns
curLen = 0;
state++;
// fall through
case 3: // display inter-character spacing or end of message padding (blank columns)
disp.setColumn(col--, 0);
curLen++;
if (curLen == showLen)
state = 0;
break;
default:
col = -1; // this definitely ends the do loop
}
} while (col >= (modStart * COL_SIZE));
disp.control(modStart, modEnd, MD_MAX72XX::UPDATE, MD_MAX72XX::ON);
}
void setup()
{
disp.begin();
}
void loop()
{
/*
strcpy(message, " T 32c");
printText(0, MAX_DEVICES-1, message);
delay(3000);
strcpy(message, " H 58%");
printText(0, MAX_DEVICES-1, message);
delay(3000);
strcpy(message, "1005mb");
printText(0, MAX_DEVICES-1, message);
delay(3000);
*/
printText(0, MAX_DEVICES-1," *");
delay(100);
printText(0, MAX_DEVICES-1," *");
delay(100);
printText(0, MAX_DEVICES-1," *");
delay(100);
printText(0, MAX_DEVICES-1," *");
delay(100);
printText(0, MAX_DEVICES-1," *");
delay(100);
printText(0, MAX_DEVICES-1," *");
delay(100);
printText(0, MAX_DEVICES-1,"");
delay(350);
printText(0, MAX_DEVICES-1," Temp");
delay(1000);
for(int i=1; i<=7; i++)
{
//temp = bme.readTemperature();
//temp = temp-4;
temp = 22;
tempString = " " + String(temp)+" c";
printText(0, MAX_DEVICES-1,tempString.c_str());
delay(1000);
}
printText(0, MAX_DEVICES-1,"");
delay(350);
printText(0, MAX_DEVICES-1," Humid");
delay(1000);
for(int i=1; i<=7; i++)
{
//hum = bme.readHumidity();
hum = 58;
humString = " " + String(hum)+" %";
printText(0, MAX_DEVICES-1,humString.c_str());
delay(1000);
}
printText(0, MAX_DEVICES-1,"");
delay(350);
printText(0, MAX_DEVICES-1," Air Pr");
delay(1000);
for(int i=1; i<=7; i++)
{
//pres = bme.seaLevelForAltitude(364, bme.readPressure())/100; //MaeOn, Thailand, altitude 364m abovesealevel
pres = 995;
presString = String(pres)+" H";
printText(0, MAX_DEVICES-1,presString.c_str());
delay(1000);
}
printText(0, MAX_DEVICES-1,"");
delay(350);
}
/*
//#include <Wire.h>
#include <MD_MAX72xx.h>
//#include <MD_Parola.h>
#include <SPI.h>
//#include <Adafruit_BME280.h>
MD_MAX72XX disp = MD_MAX72XX(MD_MAX72XX::FC16_HW, 10, 4);
//Adafruit_BME280 bme;
int temp, hum, pres; String tempString, humString, presString;
void setup(){
disp.begin(); //bme.begin(0x76, &Wire);
}
void loop(){
disp.printText(" *");
delay(45);
disp.printText(" *");
delay(45);
disp.printText(" *");
delay(45);
disp.printText(" *");
delay(45);
disp.printText(" *");
delay(45);
disp.printText(" *");
delay(45);
disp.printText("");
delay(350);
disp.printText(" Temp");
delay(1000);
for(int i=1; i<=7; i++)
{
//temp = bme.readTemperature();
//temp = temp-4;
temp = 22
tempString = " " + String(temp)+" c";
disp.printText(tempString);
delay(1000);
}
disp.printText("");
delay(350);
disp.printText(" Humid");
delay(1000);
for(int i=1; i<=7; i++)
{
//hum = bme.readHumidity();
hum b = 58
humString = " " + String(hum)+" %";
disp.printText(humString);
delay(1000);
}
disp.printText("");
delay(350);
disp.printText(" Air Pr");
delay(1000);
for(int i=1; i<=7; i++)
{
//pres = bme.seaLevelForAltitude(364, bme.readPressure())/100; //MaeOn, Thailand, altitude 364m abovesealevel
pres = 995
presString = String(pres)+" H";
disp.printText(presString);
delay(1000);
}
disp.printText("");
delay(350);
}
*/