slow display initialization

[HIGHCATDOM]

Hey guys,
I don't know if this is actually an issue, but during my current project, I found out that each time I use the tft.initR() command, it takes over one second around 1160 ms) to initialize the display, no matter on which hardware I try it (with hardware SPI).

So in my attached example, i first init the display size and after that I set the right color scheme, which means that my total boot time is almost 2.5 s. Is this normal/intended, is it an efficiency issue of the library, or am I using the bib wrong?

Thanks for your feedback!

Here is my setup:

• Arduino board: Any Arduino board (Mega & Nano tested) as well as Wemos D1 mini
• Arduino IDE version 2.1.1
• Code snipped:

`
#include <Adafruit_GFX.h>
#include <Adafruit_ST7735.h>
#include <SPI.h>

// pinout wemos D1 mini
#define TFT_BLK D0 // backlight control (high, low)
#define TFT_RST D3 // to "RES" in display
#define TFT_DC D4 // to "DC" in display
#define TFT_SCLK D5 // to "SCL" in display
#define TFT_MOSI D7 // to "SDA" in display
#define TFT_CS D8 // to "CS" in display

Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

void setup(void) {

long boot_time = millis();
pinMode(TFT_BLK, OUTPUT);
digitalWrite(TFT_BLK, LOW);

Serial.begin(115200);
Serial.println("\n\n----- Setup Start -----");

// init display size and color scheme
tft.initR(INITR_MINI160x80);
long t1 = millis();
Serial.println(" -> Time init 160x80: " + String(t1-boot_time) + " ms");

tft.initR(ST7735_MADCTL_BGR);
tft.setRotation(3);
tft.setTextWrap(false);
long t2 = millis();
Serial.println(" -> Time display: " + String(t2-t1) + " ms");

// do something
tft.fillScreen(ST77XX_RED);
digitalWrite(TFT_BLK, HIGH);

Serial.println("Total boot time: " + String(millis()-boot_time) + " ms");
Serial.println("\n\n----- Setup Finished -----\n");
}

void loop() {

}
`