MAX7219 and ESP8266 very slow scrolling speed
Posted: Wed Jul 05, 2017 11:53 amThis is my first use of MAX7219 and ESP8266.
I wrote some code but has very slow scrolling speed,
could I please have some suggestions?
Thanks
I wrote some code but has very slow scrolling speed,
could I please have some suggestions?
Thanks
Code: Select all
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
#define PAUSE_TIME 0
#define SCROLL_SPEED 0
#define MAX_DEVICES 4
#define CLK_PIN D5 // or SCK
#define DATA_PIN D7 // or MOSI
#define CS_PIN D8 // or SS
MD_Parola P = MD_Parola(CS_PIN, MAX_DEVICES);
uint8_t degC[] = { 6, 3, 3, 56, 68, 68, 68 }; // Deg C
HTTPClient http;
void setupWiFi()
{
WiFi.begin("rete1", "pw");
while(WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.println("Connected");
}
void setup() {
setupWiFi();
P.begin();
P.addChar('$', degC);
}
char tem[100];
char umi[22];
void rx(){
http.begin("http://192.168.1.58/dati"); //HTTP
int httpCode = http.GET();
static String payload = http.getString();
static String aa= "Tem:"+payload.substring(1,7)+"$ Umi:"+payload.substring(9,14)+"%";
aa.toCharArray(tem, 100)
http.end();
}
void loop() {
rx();
char *msg[] =
{
tem
};
static uint8_t cycle = 0;
if (P.displayAnimate())
{
P.displayText(msg[cycle], PA_CENTER, 0, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
cycle = (cycle + 1) % ARRAY_SIZE(msg);
}
}