Initial import of firmware and host projects

sysbuild/CMakeLists.txt

@@ -0,0 +1,20 @@
+# Copyright (c) 2026
+#
+# SPDX-License-Identifier: Apache-2.0
+
+set(IP5306_LOCAL_MODULE "${APP_DIR}/modules/ip5306")
+set(IP5306_EXTERNAL_MODULE "E:/extra/modules/ip5306")
+set(extra_zephyr_modules "$CACHE{ZEPHYR_EXTRA_MODULES}")
+
+if(EXISTS "${IP5306_LOCAL_MODULE}/zephyr/module.yml")
+  list(APPEND extra_zephyr_modules "${IP5306_LOCAL_MODULE}")
+elseif(EXISTS "${IP5306_EXTERNAL_MODULE}/zephyr/module.yml")
+  list(APPEND extra_zephyr_modules "${IP5306_EXTERNAL_MODULE}")
+endif()
+
+list(REMOVE_DUPLICATES extra_zephyr_modules)
+set(ZEPHYR_EXTRA_MODULES "${extra_zephyr_modules}" CACHE STRING "Extra Zephyr modules" FORCE)
+
+find_package(Sysbuild REQUIRED HINTS $ENV{ZEPHYR_BASE})
+
+project(sysbuild LANGUAGES)

sysbuild/mcuboot.conf

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+CONFIG_LOG=n
+CONFIG_CONSOLE=n
+CONFIG_UART_CONSOLE=n
+
+CONFIG_SERIAL=y
+CONFIG_UART_INTERRUPT_DRIVEN=y
+CONFIG_UART_LINE_CTRL=y
+
+CONFIG_USB_DEVICE_STACK=y
+CONFIG_USB_DEVICE_REMOTE_WAKEUP=n
+CONFIG_USB_CDC_ACM=y
+CONFIG_USB_NRFX=y
+CONFIG_USB_DEVICE_PRODUCT="MCUBOOT"
+CONFIG_USB_DEVICE_MANUFACTURER="new_kbd"
+CONFIG_USB_DEVICE_VID=0x1209
+CONFIG_USB_DEVICE_PID=0x0002
+
+CONFIG_RETAINED_MEM=y
+CONFIG_RETENTION=y
+CONFIG_RETENTION_BOOT_MODE=y
+
+CONFIG_MCUBOOT_SERIAL=y
+CONFIG_BOOT_SERIAL_CDC_ACM=y
+CONFIG_BOOT_SERIAL_BOOT_MODE=y
+CONFIG_BOOT_SERIAL_NO_APPLICATION=y

sysbuild/mcuboot.overlay

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+/ {
+    chosen {
+        zephyr,boot-mode = &boot_mode0;
+    };
+};
+
+&usbd {
+    status = "okay";
+
+    cdc_acm_uart0: cdc_acm_uart0 {
+        compatible = "zephyr,cdc-acm-uart";
+    };
+};
+
+&gpregret1 {
+    status = "okay";
+
+    boot_mode0: boot_mode@0 {
+        compatible = "zephyr,retention";
+        status = "okay";
+        reg = <0x0 0x1>;
+    };
+};