Add Imera converter (#22419)

platforms/chibios/converters/promicro_to_imera/_pin_defs.h

@@ -0,0 +1,36 @@
+// Copyright 2023 splitkb.com
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+// Left side (front)
+#define D3 0U
+#define D2 1U
+//      GND
+//      GND
+#define D1 2U
+#define D0 3U
+#define D4 4U
+#define C6 5U
+#define D7 6U
+#define E6 7U
+#define B4 8U
+#define B5 9U
+
+// Right side (front)
+//      RAW
+//      GND
+//      RESET
+//      VCC
+#define F4 29U
+#define F5 28U
+#define F6 17U
+#define F7 16U
+#define B1 22U
+#define B3 20U
+#define B2 23U
+#define B6 21U
+
+// LEDs
+#define D5 24U // Power LED, default-on
+#define B0 18U // Unconnected

platforms/chibios/converters/promicro_to_imera/converter.mk

@@ -0,0 +1,10 @@
+# rp2040_ce MCU settings for converting AVR projects
+MCU := RP2040
+BOARD := QMK_PM2040
+BOOTLOADER := rp2040
+
+# These are defaults based on what has been implemented for RP2040 boards
+SERIAL_DRIVER ?= vendor
+WS2812_DRIVER ?= vendor
+BACKLIGHT_DRIVER ?= software
+OPT_DEFS += -DUSB_VBUS_PIN=19U