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diff --git a/FreeRTOS/Demo/Safe_Interrupts_M33F_NXP_LPC55S69_MCUXpresso/Application/uart_demo.h b/FreeRTOS/Demo/Safe_Interrupts_M33F_NXP_LPC55S69_MCUXpresso/Application/uart_demo.h
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+++ b/FreeRTOS/Demo/Safe_Interrupts_M33F_NXP_LPC55S69_MCUXpresso/Application/uart_demo.h
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+/*
+ * FreeRTOS V202107.00
+ * Copyright (C) 2021 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+#ifndef UART_DEMO_H_
+#define UART_DEMO_H_
+
+/* Standard includes. */
+#include <stdint.h>
+
+/**
+ * @brief The function that implements the UART demo.
+ *
+ * It prints a command menu on the serial console and then waits for a task
+ * notification. Whenever user enters any input on the serial console to run a
+ * command, the UART received IRQ handler handles it and prints the appropriate
+ * response on the serial console. The IRQ handler then unblocks the UART task
+ * using task notification.
+ */
+void vUartDemoTask( void * pvParams );
+
+/**
+ * @brief Handler for the UART received IRQ.
+ *
+ * @param [in] ulData Data entered by the user.
+ */
+void vUartDataReceivedIRQHandler( uint32_t ulData );
+
+#endif /* UART_DEMO_H_ */