From 420dfbefc39d3512c42f736161731e223c844cb2 Mon Sep 17 00:00:00 2001
From: yyrliu <70476688+stultusphobia@users.noreply.github.com>
Date: Sat, 23 Aug 2025 17:11:30 -0700
Subject: [PATCH] Add support for Adafruit SHT4x Trinkey

---
 boards/adafruit_sht4xtrinkey_m0.json | 60 ++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 boards/adafruit_sht4xtrinkey_m0.json

diff --git a/boards/adafruit_sht4xtrinkey_m0.json b/boards/adafruit_sht4xtrinkey_m0.json
new file mode 100644
index 0000000..5b68bc2
--- /dev/null
+++ b/boards/adafruit_sht4xtrinkey_m0.json
@@ -0,0 +1,60 @@
+{
+  "build": {
+    "arduino": {
+        "ldscript": "flash_with_bootloader.ld"
+    },
+    "core": "adafruit",
+    "cpu": "cortex-m0plus",
+    "extra_flags": [
+      "-DARDUINO_TRINKET_M0",
+      "-DCRYSTALLESS",
+      "-DADAFRUIT_TRINKET_M0",
+      "-DARM_MATH_CM0PLUS",
+      "-D__SAMD21E18A__"
+    ],
+    "f_cpu": "48000000L",
+    "hwids": [
+      [
+        "0x239A",
+        "0x801E"
+      ],
+      [
+        "0x239A",
+        "0x001E"
+      ]
+    ],
+    "mcu": "samd21e18a",
+    "system": "samd",
+    "usb_product": "Adafruit SHT4x Trinkey",
+    "variant": "sht4xtrinkey_m0"
+  },
+  "debug": {
+    "jlink_device": "ATSAMD21E18",
+    "openocd_chipname": "at91samd21e18",
+    "openocd_target": "at91samdXX",
+    "svd_path": "ATSAMD21E18A.svd"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Adafruit Trinket M0",
+  "upload": {
+    "disable_flushing": true,
+    "maximum_ram_size": 32768,
+    "maximum_size": 262144,
+    "native_usb": true,
+    "offset_address": "0x2000",
+    "protocol": "sam-ba",
+    "protocols": [
+      "sam-ba",
+      "blackmagic",
+      "jlink",
+      "atmel-ice"
+    ],
+    "require_upload_port": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": true
+  },
+  "url": "https://www.adafruit.com/product/5912",
+  "vendor": "Adafruit"
+}