From 91b0d18e89e61efcef24d2896ed71bd1e0d79f84 Mon Sep 17 00:00:00 2001
From: tineira <55414933+tineira@users.noreply.github.com>
Date: Sun, 13 Oct 2024 18:57:08 -0300
Subject: [PATCH 1/2] Added Arduino Giga Support

---
 Adafruit_NeoPixel.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Adafruit_NeoPixel.h b/Adafruit_NeoPixel.h
index 18fabbf..1d58b99 100644
--- a/Adafruit_NeoPixel.h
+++ b/Adafruit_NeoPixel.h
@@ -54,6 +54,11 @@
 #include <Arduino.h>
 #endif
 
+#if defined(TARGET_GIGA) || defined(TARGET_M4)
+#include "mbed.h"
+#include "pinDefinitions.h"
+#endif
+
 #if defined(ARDUINO_ARCH_RP2040)
 #include <stdlib.h>
 #include "hardware/pio.h"
@@ -402,6 +407,9 @@ class Adafruit_NeoPixel {
   GPIO_TypeDef *gpioPort; ///< Output GPIO PORT
   uint32_t gpioPin;       ///< Output GPIO PIN
 #endif
+#if defined(TARGET_GIGA) || defined(TARGET_M4)
+  mbed::DigitalInOut *gpio;
+#endif
 #if defined(ARDUINO_ARCH_RP2040)
   PIO pio = pio0;
   int sm = 0;

From 77e9d543eff3854c07f0639466000c435e82d7c9 Mon Sep 17 00:00:00 2001
From: tineira <55414933+tineira@users.noreply.github.com>
Date: Sun, 13 Oct 2024 18:58:32 -0300
Subject: [PATCH 2/2] Update Adafruit_NeoPixel.cpp Added Arduino Giga Support

---
 Adafruit_NeoPixel.cpp | 70 ++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 69 insertions(+), 1 deletion(-)

diff --git a/Adafruit_NeoPixel.cpp b/Adafruit_NeoPixel.cpp
index 39f0b11..1e97590 100644
--- a/Adafruit_NeoPixel.cpp
+++ b/Adafruit_NeoPixel.cpp
@@ -1827,9 +1827,69 @@ void Adafruit_NeoPixel::show(void) {
 
 #elif defined(__arm__)
 
+#if defined(TARGET_GIGA) || defined(TARGET_M4)
+  // Arduino GIGA -----------------------------------------------------------
+  uint8_t *p = pixels, *end = p + numBytes, pix;
+  while (p < end)
+  {
+    pix = *p++;
+    for (int i = 7; i >= 0; i--)
+    {
+      // gpio_write(&gpio->gpio, 1);
+      gpio->write(1);
+
+      // duty cycle determines bit value
+      // if (pix & 0x80)
+      if (bitRead(pix, i) == 0)
+      {
+        // one
+        // wait_ns(400); -> 192 cycles
+#if defined(TARGET_GIGA)
+        for (int j = 0; j < 96; j++)
+#else
+        for (int j = 0; j < 48; j++)
+#endif
+          __NOP();
+
+        // gpio_write(&gpio->gpio, 0);
+        gpio->write(0);
+
+        // wait_ns(850) -> 408 cycles
+#if defined(TARGET_GIGA)
+        for (int j = 0; j < 204; j++)
+#else
+        for (int j = 0; j < 102; j++)
+#endif
+          __NOP();
+      }
+      else
+      {
+        // zero
+        // wait_ns(800) -> 384 cycles
+#if defined(TARGET_GIGA)
+        for (int j = 0; j < 192; j++)
+#else
+        for (int j = 0; j < 96; j++)
+#endif
+          __NOP();
+
+        gpio->write(0);
+        // gpio_write(&gpio->gpio, 0);
+        // wait_ns(450) -> 216 cycles
+#if defined(TARGET_GIGA)
+        for (int j = 0; j < 108; j++)
+#else
+        for (int j = 0; j < 54; j++)
+#endif
+          __NOP();
+      }
+
+      // pix = pix << 1; // shift to next bit
+    }
+  }
     // ARM MCUs -- Teensy 3.0, 3.1, LC, Arduino Due, RP2040 -------------------
 
-#if defined(ARDUINO_ARCH_RP2040)
+#elif defined(ARDUINO_ARCH_RP2040)
   // Use PIO
   rp2040Show(pin, pixels, numBytes, is800KHz);
 
@@ -3308,6 +3368,14 @@ void Adafruit_NeoPixel::setPin(int16_t p) {
   }
   #endif
 #endif
+#if defined(TARGET_GIGA) || defined(TARGET_M4)
+  gpio = digitalPinToGpio(pin);
+  if (gpio == NULL)
+  {
+      gpio = new mbed::DigitalInOut(digitalPinToPinName(pin), PIN_OUTPUT, PullNone, 0);
+      digitalPinToGpio(pin) = gpio;
+  }
+#endif
 }
 
 /*!