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#define SPI_READ_FREQUENCY  20000000 // Optional reduced SPI frequency
for reading TFT

Also weeded out some compiler warnings

Small performance improvement for ILI9488

ILI9488 is now supported in SPI mode as well as 8 bit parallel.

Setup20 added for ESP8266 and Setup21 addwd for ESP32

Other minor changes to tidy code up
Put back in ability to call init() multiple times in sketch

Rename file to match #include directive

Mismatch of case between filename and #include directive causes compilation to fail in case sensitive operating systems such as Linux. Rather than correct the filename in the #include directive I have chosen to change the filename to make it consistent with the other file of the similar name. A search indicates that this is also consistent with the official spelling of the font.

In 4 wire SPI mode the ILI9488 is not supported as it needs 18 bit colours spread across 3 bytes.

Use line is form:
tft.init(1);
or:
tft.init(INITR_REDTAB);
// Enumerated the configurations in library are:
#define INITR_GREENTAB
0x0
#define INITR_REDTAB    0x1
#define INITR_BLACKTAB  0x2
#define
INITR_GREENTAB2 0x3 // Use if you get random pixels on two edges of
green tab display
#define INITR_GREENTAB3 0x4 // Use if you get random
pixels on edge(s) of 128x128 screen
#define INITR_GREENTAB128 0x5 // Use
if you only get part of 128x128 screen in rotation 0 & 1
#define INITB
0xB

Corrected jpeg render fn to handle any width image
Minor tweaks
Remove version number from sketch name, put in settings.h

Example is in Generic folder, draw the Espressif logo on the screen.

To allow access to variables that can be set via functions anyway.