From bfb03e63f38a328472c1886b0b30e0a881406aa6 Mon Sep 17 00:00:00 2001
From: gilex-dev <gilex-dev@proton.me>
Date: Mon, 21 Jul 2025 23:30:40 +0200
Subject: [PATCH] Add board ESP32-C3 Mini

---
 boards/esp32c3-mini.json             | 35 ++++++++++++++++++++++++++++
 variants/esp32c3-mini/pins_arduino.h | 31 ++++++++++++++++++++++++
 2 files changed, 66 insertions(+)
 create mode 100644 boards/esp32c3-mini.json
 create mode 100644 variants/esp32c3-mini/pins_arduino.h

diff --git a/boards/esp32c3-mini.json b/boards/esp32c3-mini.json
new file mode 100644
index 0000000..b1155f9
--- /dev/null
+++ b/boards/esp32c3-mini.json
@@ -0,0 +1,35 @@
+{
+  "build": {
+    "arduino":{
+      "ldscript": "esp32c3_out.ld"
+    },
+    "core": "esp32",
+    "extra_flags": "-DARDUINO_USB_MODE=1 -DARDUINO_USB_CDC_ON_BOOT=1",
+    "f_cpu": "160000000L",
+    "f_flash": "80000000L",
+    "flash_mode": "qio",
+    "mcu": "esp32c3",
+    "variant": "esp32c3-mini",
+    "variants_dir": "variants"
+  },
+  "connectivity": [
+    "wifi"
+  ],
+  "debug": {
+    "openocd_target": "esp32c3.cfg"
+  },
+  "frameworks": [
+    "arduino",
+    "espidf"
+  ],
+  "name": "Espressif ESP32-C3-MINI",
+  "upload": {
+    "flash_size": "4MB",
+    "maximum_ram_size": 327680,
+    "maximum_size": 4194304,
+    "require_upload_port": true,
+    "speed": 460800
+  },
+  "url": "https://docs.espressif.com/projects/esp-idf/en/latest/esp32c3/hw-reference/esp32c3/user-guide-devkitm-1.html",
+  "vendor": "Espressif"
+}
diff --git a/variants/esp32c3-mini/pins_arduino.h b/variants/esp32c3-mini/pins_arduino.h
new file mode 100644
index 0000000..a236033
--- /dev/null
+++ b/variants/esp32c3-mini/pins_arduino.h
@@ -0,0 +1,31 @@
+#ifndef Pins_Arduino_h
+#define Pins_Arduino_h
+
+#include <stdint.h>
+
+#define BUTTON 9
+
+// BUILTIN_LED can be used in new Arduino API digitalWrite() like in Blink.ino
+static const uint8_t LED_BUILTIN = 8;
+#define BUILTIN_LED  LED_BUILTIN // backward compatibility
+#define LED_BUILTIN LED_BUILTIN  // allow testing #ifdef LED_BUILTIN
+
+static const uint8_t TX = 21;
+static const uint8_t RX = 20;
+
+static const uint8_t SDA = 8;
+static const uint8_t SCL = 9;
+
+static const uint8_t SS    = 7;
+static const uint8_t MOSI  = 6;
+static const uint8_t MISO  = 5;
+static const uint8_t SCK   = 4;
+
+static const uint8_t A0 = 0;
+static const uint8_t A1 = 1;
+static const uint8_t A2 = 2;
+static const uint8_t A3 = 3;
+static const uint8_t A4 = 4;
+static const uint8_t A5 = 5;
+
+#endif /* Pins_Arduino_h */