add Mecx Labs mp1 macropad

keyboards/mecxlabs/mp1/info.json

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+{
+    "keyboard_name": "mp1",
+    "manufacturer": "Mecx Labs",
+    "maintainer": "patrykf03",
+    "usb": {
+        "vid": "0xC6C6",
+        "pid": "0x6C6C",
+        "device_version": "0.0.1"
+    },
+    "processor": "STM32F072",
+    "bootloader": "stm32-dfu",
+    "features": {
+        "bootmagic": true,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true,
+        "encoder": true
+    },
+    "encoder": {
+        "rotary": [
+            { "pin_a": "A10", "pin_b": "A9", "resolution": 2 }
+        ]
+    },
+    "matrix_pins": {
+        "direct": [
+            ["B14", "A14", "A15"],
+            ["B13", "B12", "A2"],
+            ["A5", "A4", "A3"]
+        ]
+    },
+    "layouts": {
+        "LAYOUT_ortho_3x3": {
+            "layout": [
+                { "matrix": [0, 0], "x": 0.0, "y": 0.0 },
+                { "matrix": [0, 1], "x": 1.0, "y": 0.0 },
+                { "matrix": [0, 2], "x": 2.0, "y": 0.0 },
+                { "matrix": [1, 0], "x": 0.0, "y": 1.0 },
+                { "matrix": [1, 1], "x": 1.0, "y": 1.0 },
+                { "matrix": [1, 2], "x": 2.0, "y": 1.0 },
+                { "matrix": [2, 0], "x": 0.0, "y": 2.0 },
+                { "matrix": [2, 1], "x": 1.0, "y": 2.0 },
+                { "matrix": [2, 2], "x": 2.0, "y": 2.0 }
+            ]
+        }
+    }
+}

keyboards/mecxlabs/mp1/keymaps/default/keymap.c

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+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+	[0] = LAYOUT_ortho_3x3(
+        KC_1, KC_2, KC_3,
+        KC_4, KC_5, KC_6,
+        KC_7, KC_8, KC_9
+	)
+
+};
+
+bool encoder_update_user(uint8_t index, bool clockwise) {
+        if (clockwise) {
+            tap_code(KC_VOLU);
+        } else {
+            tap_code(KC_VOLD);
+        }
+    return true;
+}

keyboards/mecxlabs/mp1/readme.md

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+# mecxlabs mp1
+
+* Keyboard Maintainer: [Patrykf03](https://github.com/Patrykf03)
+* Hardware Supported: Mecx Labs mp1 macropad (STM32/APM32F072)
+* Hardware Availability: [mecxlabs.com](https://mecxlabs.com/products/mp1-framework)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make mecxlabs/mp1:default
+
+Flashing example for this keyboard:
+
+    make mecxlabs/mp1:default:flash
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+## Bootloader
+
+Enter the bootloader in 3 ways:
+
+* **Bootmagic reset**: Hold down the key at (0,0) in the matrix (encoder in top left) and plug in the keyboard
+* **Physical reset button**: Briefly press the button on the back of the PCB
+* **Keycode in layout**: Press the key mapped to `RESET` if it is available	

keyboards/mecxlabs/mp1/rules.mk

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+# Wildcard to allow APM32 MCU
+DFU_SUFFIX_ARGS = -v FFFF -p FFFF
+# Enter lower-power sleep mode when on the ChibiOS idle thread
+OPT_DEFS += -DCORTEX_ENABLE_WFI_IDLE=TRUE