105 lines
5.4 KiB
C++
105 lines
5.4 KiB
C++
// #################################################################################################
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// # << NEORV32 - "Hello World" Demo Program >> #
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// # ********************************************************************************************* #
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// # BSD 3-Clause License #
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// # #
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// # Copyright (c) 2023, Stephan Nolting. All rights reserved. #
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// # #
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// # Redistribution and use in source and binary forms, with or without modification, are #
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// # permitted provided that the following conditions are met: #
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// # #
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// # 1. Redistributions of source code must retain the above copyright notice, this list of #
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// # conditions and the following disclaimer. #
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// # #
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// # 2. Redistributions in binary form must reproduce the above copyright notice, this list of #
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// # conditions and the following disclaimer in the documentation and/or other materials #
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// # provided with the distribution. #
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// # #
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// # 3. Neither the name of the copyright holder nor the names of its contributors may be used to #
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// # endorse or promote products derived from this software without specific prior written #
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// # permission. #
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// # #
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// # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS #
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// # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF #
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// # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE #
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// # COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, #
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// # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE #
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// # GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED #
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// # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING #
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// # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED #
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// # OF THE POSSIBILITY OF SUCH DAMAGE. #
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// # ********************************************************************************************* #
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// # The NEORV32 Processor - https://github.com/stnolting/neorv32 (c) Stephan Nolting #
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// #################################################################################################
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/**********************************************************************//**
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* @file hello_cpp/main.cpp
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* @author Gideon Zweijtzer
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* @brief Simple 'hello world' type of demo with static C++ constructors
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**************************************************************************/
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#include <neorv32.h>
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/**********************************************************************//**
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* @name User configuration
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**************************************************************************/
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/**@{*/
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/** UART BAUD rate */
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#define BAUD_RATE 19200
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/**@}*/
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/**********************************************************************//**
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* DemoClass: Just a simple C++ class that holds one constant and can
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* be asked to print it.
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*
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* @note This class will only successfully reveal its ID if the
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* constructors are called prior to the main function.
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**************************************************************************/
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class DemoClass
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{
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const int identity;
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public:
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DemoClass(int id) : identity(id) { }
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void print_id(void)
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{
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// In order to demonstrate just how constructors are called pre-main,
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// it is not necessary to use the C++ type streams to print something.
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neorv32_uart0_printf("I am DemoClass with instance ID: %d\n", identity);
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}
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};
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static DemoClass demo1(1);
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static DemoClass demo2(2);
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/**********************************************************************//**
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* Main function; prints some fancy stuff via UART.
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*
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* @note This program requires the UART interface to be synthesized.
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*
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* @return 0 if execution was successful
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**************************************************************************/
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int main() {
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// capture all exceptions and give debug info via UART
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// this is not required, but keeps us safe
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neorv32_rte_setup();
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// setup UART at default baud rate, no parity bits, no HW flow control
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neorv32_uart0_setup(BAUD_RATE, PARITY_NONE, FLOW_CONTROL_NONE);
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// print project logo via UART
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neorv32_rte_print_logo();
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// say hello
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neorv32_uart0_puts("Hello world! :)\n");
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// print the IDs of the two statically declared instances of DemoClass
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demo1.print_id();
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demo2.print_id();
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return 0;
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}
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