Code in loop() affect speed of code in setup()
Posted: Tue Jan 22, 2019 11:30 amHi.
I have some strange behaviour that I can't quite understand.
I'm running a Wemos D1 R2
In setup() I call my Startup_screen(); which runs fine.
But Startup_screen() runs faster/smoother when there is no code in the loop() section.
How can that be - Why is code in loop() affecting execution-speed of code in setup() ?
The execution of Sertup_screen() is about half speed or less when loop() contains code like if- of switch-statements.
/Brian
Update:
Since I posted this, I foundation a solution. Added a ESP.eraseConfig; before WiFi.forceSleepBegin(); which solved the problem.
The question now is, why?
I have some strange behaviour that I can't quite understand.
I'm running a Wemos D1 R2
In setup() I call my Startup_screen(); which runs fine.
But Startup_screen() runs faster/smoother when there is no code in the loop() section.
How can that be - Why is code in loop() affecting execution-speed of code in setup() ?
The execution of Sertup_screen() is about half speed or less when loop() contains code like if- of switch-statements.
/Brian
Update:
Since I posted this, I foundation a solution. Added a ESP.eraseConfig; before WiFi.forceSleepBegin(); which solved the problem.
The question now is, why?
Code: Select all
//====================================================================================
// Libraries
//====================================================================================
// Call up the SPIFFS FLASH filing system this is part of the ESP Core
#define FS_NO_GLOBALS
#include <FS.h>
#include "ESP8266WiFi.h" // Bruges kun til at sætte wifi i Sleep-mode
#include "Free_Fonts.h"
#ifdef ESP32
#include "SPIFFS.h" // For ESP32 only
#endif
// Call up the TFT library
#include <TFT_eSPI.h> // Hardware-specific library for ESP8266
#include <TFT_eFEX.h>
#include <TFTShape.h>
// Invoke TFT library
TFT_eSPI tft = TFT_eSPI();
TFT_eSprite spr = TFT_eSprite(&tft); // Sprite object: Car
TFT_eFEX fex = TFT_eFEX(&tft); // Create TFT_eFEX object "fex" with pointer to "tft" object
//====================================================================================
// Constants we need for setup
//====================================================================================
const int PWRtimeout = 20000; // miliSec timeout befor powering off the RasPi after last serial data has been detected
const int ABORTtimeout = 5; // Seconds to abort an operations that are waiting for the user
//====================================================================================
// Setup
//====================================================================================
void setup()
{
WiFi.forceSleepBegin(); // Wifi goes sleepy bye bye.
Serial.begin(115200);
// Starting SPIFFS-filesystem
if (!SPIFFS.begin()) {
Serial.println("ERR DISPLAY: FS initialisation failed!");
while (1) yield(); // Stay here twiddling thumbs waiting
}
Serial.println("INFO DISPLAY: FS initialised.");
// Now initialise the TFT
tft.begin();
tft.setRotation(3); // 0 & 2 Portrait. 1 & 3 landscape
tft.fillScreen(TFT_BLACK);
// Setup IO-pins
// Pin that controls the power to ther RasPi. Hi = on, Low = off
// Runs start-screen and wait for RasPI to start
wdt_reset();
Startup_screen();
tft.fillScreen(TFT_BLACK);
}
//====================================================================================
// Loop
//====================================================================================
void loop()
{
yield();
//
long tid;
if (Serial.available())
{
tid = millis();
String in = GetSerial();
if (in[0] == 'c') tft.fillScreen(TFT_BLACK);
if (in[0] == 'h') LoadHead(in);
if (in[0] == 't') TextWrite(in);
if (in[0] == '!') icon(in);
}
if ((millis() - tid) > PWRtimeout) Shutdown();
}
//====================================================================================