// ----------------------------------------------------------------------------
|
// ----------------------------------------------------------------------------
|
|
|
// SystemC Uart: definition
|
// SystemC Uart: definition
|
|
|
// This file is part of the cycle accurate model of the OpenRISC 1000 based
|
// This file is part of the cycle accurate model of the OpenRISC 1000 based
|
// system-on-chip, ORPSoC, built using Verilator.
|
// system-on-chip, ORPSoC, built using Verilator.
|
|
|
// This program is free software: you can redistribute it and/or modify it
|
// This program is free software: you can redistribute it and/or modify it
|
// under the terms of the GNU Lesser General Public License as published by
|
// under the terms of the GNU Lesser General Public License as published by
|
// the Free Software Foundation, either version 3 of the License, or (at your
|
// the Free Software Foundation, either version 3 of the License, or (at your
|
// option) any later version.
|
// option) any later version.
|
|
|
// This program is distributed in the hope that it will be useful, but WITHOUT
|
// This program is distributed in the hope that it will be useful, but WITHOUT
|
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
|
// License for more details.
|
// License for more details.
|
|
|
// You should have received a copy of the GNU Lesser General Public License
|
// You should have received a copy of the GNU Lesser General Public License
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
// ----------------------------------------------------------------------------
|
// ----------------------------------------------------------------------------
|
|
|
// $Id: $
|
// $Id: $
|
|
|
#ifndef UART_SC__H
|
#ifndef UART_SC__H
|
#define UART_SC__H
|
#define UART_SC__H
|
|
|
#include "systemc.h"
|
#include "systemc.h"
|
|
#include <stdint.h>
|
|
|
//! Handle UART I/O
|
//! Handle UART I/O
|
|
|
class UartSC
|
class UartSC
|
: public sc_core::sc_module
|
: public sc_core::sc_module
|
{
|
{
|
public:
|
public:
|
|
|
// Constructor
|
// Constructor
|
UartSC (sc_core::sc_module_name name);
|
UartSC (sc_core::sc_module_name name);
|
|
|
// The ports
|
// The ports
|
sc_in<bool> clk;
|
sc_in<bool> clk;
|
sc_in<bool> uarttx;
|
sc_in<bool> uarttx;
|
sc_out<bool> uartrx;
|
sc_out<bool> uartrx;
|
|
|
// Init function
|
// Init function
|
void initUart (int clk_freq_hz, int uart_baud) ;
|
void initUart (int clk_freq_hz, int uart_baud) ;
|
// Transmit (from ORPSoC) handling function
|
// Transmit (from ORPSoC) handling function
|
void checkTx();
|
void checkTx();
|
|
|
private:
|
private:
|
int clocks_per_bit;
|
int clocks_per_bit;
|
uint8_t current_char;
|
uint8_t current_char;
|
int counter;
|
int counter;
|
int bits_received;
|
int bits_received;
|
|
|
}; // UartSC ()
|
}; // UartSC ()
|
|
|
#endif // UART_SC__H
|
#endif // UART_SC__H
|
|
|