From 757ab8039a91f1e10f523f23a362f9ed4f7014aa Mon Sep 17 00:00:00 2001
From: littlefreak3000 <114180593+littlefreak3000@users.noreply.github.com>
Date: Thu, 16 Jan 2025 14:31:22 -0500
Subject: [PATCH] Update HAL_NVIC.cpp

Added support for STM32G0xx chips.
---
 Marlin/src/HAL/shared/ARM/HAL_NVIC.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Marlin/src/HAL/shared/ARM/HAL_NVIC.cpp b/Marlin/src/HAL/shared/ARM/HAL_NVIC.cpp
index 17d946a2efcd..c9b3f32e2d71 100644
--- a/Marlin/src/HAL/shared/ARM/HAL_NVIC.cpp
+++ b/Marlin/src/HAL/shared/ARM/HAL_NVIC.cpp
@@ -51,6 +51,12 @@
   // wired into the CPU (hard fault at attempt).
   extern void (*volatile const g_pfnVectors[VECTOR_TABLE_SIZE])();
   #define _NVIC_HAS_DEFAULT_VECTOR
+#elif defined(STM32G0xx)  // Generalize for all STM32G0 series chips
+  // STM32G0 series chips based on ARM Cortex-M0+ with 16 fixed vectors and 32 external interrupts
+  #define VECTOR_TABLE_SIZE 48  // 16 fixed exceptions + 32 external interrupts
+  #define IRQ_VECTOR_ALIGNMENT (1<<8) // 256 bytes alignment for Cortex-M0+
+  extern void (*volatile const g_pfnVectors[VECTOR_TABLE_SIZE])();
+  #define _NVIC_HAS_DEFAULT_VECTOR
 #elif defined(TARGET_LPC1768)
   // See NXP UM10360 page 75ff
   #define VECTOR_TABLE_SIZE 51