From d292a3c49773417bcd192a322d4a17337e6c7a0a Mon Sep 17 00:00:00 2001
From: Alexander Drozdov <adrozdoff@gmail.com>
Date: Sun, 25 Jun 2023 22:21:38 +1000
Subject: [PATCH] Fixed SPI displays work with LGT8fx based boards

Tested with BSP and ILI9341 SPI based display:
* LGT8fx: https://github.com/dbuezas/lgt8fx
* Nulllab: https://github.com/nulllaborg/arduino_nulllab

Issue:
SPI based displays work well with BitBang mode, but does not
work with HW SPI.

Root cause:
AVR_WRITESPI() macrosses uses direct access to the HW but
LGT8fx has a little bit different implementation. Also,
standard implementation sounds like good for default use.
---
 Adafruit_SPITFT.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Adafruit_SPITFT.cpp b/Adafruit_SPITFT.cpp
index 2c8ef01b..6ff273d4 100644
--- a/Adafruit_SPITFT.cpp
+++ b/Adafruit_SPITFT.cpp
@@ -1362,7 +1362,7 @@ void Adafruit_SPITFT::writeColor(uint16_t color, uint32_t len) {
       spi_write_blocking(pi_spi, (uint8_t *)&color, 2);
 #else // !ESP8266 && !ARDUINO_ARCH_RP2040
     while (len--) {
-#if defined(__AVR__)
+#if defined(__AVR__) && !defined(__LGT8F__)
       AVR_WRITESPI(hi);
       AVR_WRITESPI(lo);
 #elif defined(ESP32)
@@ -2109,7 +2109,7 @@ inline void Adafruit_SPITFT::SPI_END_TRANSACTION(void) {
 */
 void Adafruit_SPITFT::spiWrite(uint8_t b) {
   if (connection == TFT_HARD_SPI) {
-#if defined(__AVR__)
+#if defined(__AVR__) && !defined(__LGT8F__)
     AVR_WRITESPI(b);
 #elif defined(ESP8266) || defined(ESP32)
     hwspi._spi->write(b);
@@ -2417,7 +2417,7 @@ inline bool Adafruit_SPITFT::SPI_MISO_READ(void) {
 */
 void Adafruit_SPITFT::SPI_WRITE16(uint16_t w) {
   if (connection == TFT_HARD_SPI) {
-#if defined(__AVR__)
+#if defined(__AVR__) && !defined(__LGT8F__)
     AVR_WRITESPI(w >> 8);
     AVR_WRITESPI(w);
 #elif defined(ESP8266) || defined(ESP32)
@@ -2471,7 +2471,7 @@ void Adafruit_SPITFT::SPI_WRITE16(uint16_t w) {
 */
 void Adafruit_SPITFT::SPI_WRITE32(uint32_t l) {
   if (connection == TFT_HARD_SPI) {
-#if defined(__AVR__)
+#if defined(__AVR__) && !defined(__LGT8F__)
     AVR_WRITESPI(l >> 24);
     AVR_WRITESPI(l >> 16);
     AVR_WRITESPI(l >> 8);