Working on this IOT clock and linking it with www.worldometers.info to read realtime covid patients count in INDIA.
A great learning during the Lockdown with leftover circuit and P4 Led Matrix.
// This is how many color levels the display shows - the more the slower the update
//#define PxMATRIX_COLOR_DEPTH 8
// Defines the buffer height / the maximum height of the matrix
//#define PxMATRIX_MAX_HEIGHT 64
// Defines the buffer width / the maximum width of the matrix
//#define PxMATRIX_MAX_WIDTH 64
// Defines how long we display things by default
//#define PxMATRIX_DEFAULT_SHOWTIME 30
// Defines the speed of the SPI bus (reducing this may help if you experience noisy images)
//#define PxMATRIX_SPI_FREQUENCY 20000000
// Creates a second buffer for backround drawing (doubles the required RAM)
//#define PxMATRIX_double_buffer true
#include <PxMatrix.h>
// Pins for LED MATRIX
#ifdef ESP32
#define P_LAT 22
#define P_A 19
#define P_B 23
#define P_C 18
#define P_D 5
#define P_E 15
#define P_OE 2
hw_timer_t * timer = NULL;
portMUX_TYPE timerMux = portMUX_INITIALIZER_UNLOCKED;
#endif
#ifdef ESP8266
#include <Ticker.h>
Ticker display_ticker;
#define P_LAT 16
#define P_A 5
#define P_B 4
#define P_C 15
#define P_D 12
#define P_E 0
#define P_OE 2
#endif
#define matrix_width 64
#define matrix_height 32
const char* indiacount = "/apps/thinghttp/send_request?api_key=################";
const char* indiadeath = "/apps/thinghttp/send_request?api_key=################";
const char* indiarecovered = "/apps/thinghttp/send_request?api_key=################";
// This defines the 'on' time of the display is us. The larger this number,
// the brighter the display. If too large the ESP will crash
uint8_t display_draw_time=20; //10-50 is usually fine
//PxMATRIX display(32,16,P_LAT, P_OE,P_A,P_B,P_C);
PxMATRIX display(64,32,P_LAT, P_OE,P_A,P_B,P_C,P_D);
//PxMATRIX display(64,64,P_LAT, P_OE,P_A,P_B,P_C,P_D,P_E);
// Some standard colors
uint16_t myRED = display.color565(255, 0, 0);
uint16_t myGREEN = display.color565(0, 255, 0);
uint16_t myBLUE = display.color565(0, 0, 255);
uint16_t myWHITE = display.color565(255, 255, 255);
uint16_t myYELLOW = display.color565(255, 255, 0);
uint16_t myCYAN = display.color565(0, 255, 255);
uint16_t myMAGENTA = display.color565(255, 0, 255);
uint16_t myBLACK = display.color565(0, 0, 0);
uint16_t myLime = display.color565(0, 255, 0);
uint16_t myCOLORS[9]={myRED,myGREEN,myBLUE,myWHITE,myYELLOW,myCYAN,myMAGENTA,myBLACK,myLime};
#ifdef ESP8266
// ISR for display refresh
void display_updater()
{
display.display(display_draw_time);
}
#endif
void display_update_enable(bool is_enable)
{
#ifdef ESP8266
if (is_enable)
display_ticker.attach(0.002, display_updater);
else
display_ticker.detach();
#endif
}
void setup() {
Serial.begin(9600);
// Define your display layout here, e.g. 1/8 step, and optional SPI pins begin(row_pattern, CLK, MOSI, MISO, SS)
display.begin(8);
//display.begin(8, 14, 13, 12, 4);
// Define multiplex implemention here {BINARY, STRAIGHT} (default is BINARY)
//display.setMuxPattern(BINARY);
// Set the multiplex pattern {LINE, ZIGZAG,ZZAGG, ZAGGIZ, WZAGZIG, VZAG, ZAGZIG} (default is LINE)
//display.setScanPattern(LINE);
// Rotate display
//display.setRotate(true);
// Flip display
//display.setFlip(true);
// Helps to reduce display update latency on larger displays
//display.setFastUpdate(true);
// Control the minimum color values that result in an active pixel
//display.setColorOffset(5, 5,5);
// Set the multiplex implemention {BINARY, STRAIGHT} (default is BINARY)
//display.setMuxPattern(BINARY);
// Set the color order {RRGGBB, RRBBGG, GGRRBB, GGBBRR, BBRRGG, BBGGRR} (default is RRGGBB)
//display.setColorOrder(RRGGBB);
// Set the time in microseconds that we pause after selecting each mux channel
// (May help if some rows are missing / the mux chip is too slow)
//display.setMuxDelay(0,1,0,0,0);
// Set the number of panels that make up the display area width (default is 1)
//display.setPanelsWidth(2);
// Set the brightness of the panels (default is 255)
//display.setBrightness(50);
// Set driver chip type
//display.setDriverChip(FM6124);
//display.setFastUpdate(true);
display.clearDisplay();
//display.setTextColor(myGREEN);
display.color565(0, 255, 0);
display.setCursor(0,0);
display.print("India");
//display.setTextColor(myGREEN);
display.color565(0, 255, 0);
display.setCursor(30,0);
//display.setTextWrap(true);
display.print("Covid19 Tracker");
display_update_enable(true);
delay(3000);
}
void scroll_text(uint8_t ypos, unsigned long scroll_delay, String text, uint8_t colorR, uint8_t colorG, uint8_t colorB)
{
uint16_t text_length = text.length();
display.setTextWrap(false); // we don't wrap text so it scrolls nicely
display.setTextSize(1);
display.setRotation(0);
display.setTextColor(display.color565(colorR,colorG,colorB));
// Asuming 5 pixel average character width
for (int xpos=matrix_width; xpos>-(matrix_width+text_length*5); xpos--)
{
display.setTextColor(display.color565(colorR,colorG,colorB));
display.clearDisplay();
display.setCursor(xpos,ypos);
display.println(text);
delay(scroll_delay);
yield();
// This might smooth the transition a bit if we go slow
// display.setTextColor(display.color565(colorR/4,colorG/4,colorB/4));
// display.setCursor(xpos-1,ypos);
// display.println(text);
delay(scroll_delay/5);
yield();
}
}
uint8_t icon_index=0;
void loop() {
//scroll_text(1,50,"Welcome to India Covid-19 Tracker!",96,96,250);
//display.clearDisplay();
//scroll_text(0,50,"Total Count",96,96,250);
//scroll_text(0,50,"Active Cases",96,96,250);
//scroll_text(0,50,"Recovered",96,96,250);
//scroll_text(0,50,"Deaths",96,96,250);
}