From d7a63a639424edd399c97c1037a702573e07e8f2 Mon Sep 17 00:00:00 2001
From: Joshua Wilson <joshdoesthis@icloud.com>
Date: Mon, 23 Jun 2025 20:08:37 +1200
Subject: [PATCH 1/2] Add new board

PlatformIO board configuration for the M5Stack StampC3.
---
 boards/m5stack-stampc3.json | 47 +++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 boards/m5stack-stampc3.json

diff --git a/boards/m5stack-stampc3.json b/boards/m5stack-stampc3.json
new file mode 100644
index 000000000..30d0c3554
--- /dev/null
+++ b/boards/m5stack-stampc3.json
@@ -0,0 +1,47 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "esp32c3_out.ld",
+      "partitions": "default_4MB.csv"
+    },
+    "core": "esp32",
+    "extra_flags": [
+      "-DARDUINO_M5STACK_STAMPC3",
+      "-DARDUINO_USB_MODE=1",
+      "-DARDUINO_RUNNING_CORE=0",
+      "-DARDUINO_EVENT_RUNNING_CORE=0"
+    ],
+    "f_cpu": "160000000L",
+    "f_flash": "80000000L",
+    "flash_mode": "dio",
+    "hwids": [
+      [
+        "0x303A",
+        "0x1001"
+      ]
+    ],
+    "mcu": "esp32c3",
+    "variant": "m5stack_stamp_c3"
+  },
+  "connectivity": [
+    "wifi",
+    "bluetooth"
+  ],
+  "debug": {
+    "openocd_target": "esp32c3.cfg"
+  },
+  "frameworks": [
+    "arduino",
+    "espidf"
+  ],
+  "name": "M5Stack StampC3",
+  "upload": {
+    "flash_size": "4MB",
+    "maximum_ram_size": 327680,
+    "maximum_size": 4194304,
+    "require_upload_port": true,
+    "speed": 460800
+  },
+  "url": "https://docs.m5stack.com/en/core/stamp_c3",
+  "vendor": "M5Stack"
+}

From d92b54a339ffd4ffba75a4ca4cbb3316d09c1dc6 Mon Sep 17 00:00:00 2001
From: Joshua Wilson <joshdoesthis@icloud.com>
Date: Mon, 23 Jun 2025 22:03:03 +1200
Subject: [PATCH 2/2] Add new board M5Stack StampC3

---
 boards/m5stack-stampc3.json | 27 +++++----------------------
 1 file changed, 5 insertions(+), 22 deletions(-)

diff --git a/boards/m5stack-stampc3.json b/boards/m5stack-stampc3.json
index 30d0c3554..4f015f806 100644
--- a/boards/m5stack-stampc3.json
+++ b/boards/m5stack-stampc3.json
@@ -2,38 +2,21 @@
   "build": {
     "arduino": {
       "ldscript": "esp32c3_out.ld",
-      "partitions": "default_4MB.csv"
+      "partitions": "min_spiffs.csv"
     },
     "core": "esp32",
-    "extra_flags": [
-      "-DARDUINO_M5STACK_STAMPC3",
-      "-DARDUINO_USB_MODE=1",
-      "-DARDUINO_RUNNING_CORE=0",
-      "-DARDUINO_EVENT_RUNNING_CORE=0"
-    ],
     "f_cpu": "160000000L",
     "f_flash": "80000000L",
     "flash_mode": "dio",
-    "hwids": [
-      [
-        "0x303A",
-        "0x1001"
-      ]
-    ],
+    "hwids": [["0x303A", "0x1001"]],
     "mcu": "esp32c3",
-    "variant": "m5stack_stamp_c3"
+    "variant": "esp32c3"
   },
-  "connectivity": [
-    "wifi",
-    "bluetooth"
-  ],
+  "connectivity": ["wifi", "bluetooth"],
   "debug": {
     "openocd_target": "esp32c3.cfg"
   },
-  "frameworks": [
-    "arduino",
-    "espidf"
-  ],
+  "frameworks": ["arduino", "espidf"],
   "name": "M5Stack StampC3",
   "upload": {
     "flash_size": "4MB",