| /***************************************************************************** |
| |
| Licensed to Accellera Systems Initiative Inc. (Accellera) under one or |
| more contributor license agreements. See the NOTICE file distributed |
| with this work for additional information regarding copyright ownership. |
| Accellera licenses this file to you under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with the |
| License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| implied. See the License for the specific language governing |
| permissions and limitations under the License. |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| tx.cpp -- |
| |
| Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15 |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| MODIFICATION LOG - modifiers, enter your name, affiliation, date and |
| changes you are making here. |
| |
| Name, Affiliation, Date: |
| Description of Modification: |
| |
| *****************************************************************************/ |
| |
| /* Filename driver.cc */ |
| /* This is a SIO transmitter */ |
| |
| #include "tx.h" |
| |
| void sio_tx::byte (char c) |
| { |
| bool parity = false; |
| int n; |
| |
| // Start bit |
| tx.write(false); |
| wait(); |
| |
| // 8 data bits |
| for (n=0; n<8; n++) { |
| if (c & 0x1) parity=!parity; |
| tx.write (c & 0x1); |
| c = c >>1; |
| wait(); |
| } |
| |
| // parity bit |
| tx.write(parity); |
| wait(); |
| |
| // stop bits; |
| if (two_stop_bits) { |
| tx.write(true); |
| wait(); |
| tx.write(true); |
| wait(); |
| } else { |
| tx.write(true); |
| wait(); |
| } |
| } // end of entry function |
| |
| |
| void sio_tx::mark (int cycles) |
| { |
| int n; |
| |
| for (n=0; n<cycles; n++) { |
| tx.write(true); |
| wait(); |
| } |
| } |
| |
| |
| void sio_tx::entry() |
| { |
| while (1) { |
| mark(5); |
| byte((char)0x5a); |
| byte((char)0xff); |
| mark(1); |
| byte((char)0xab); |
| } |
| } // end of entry function |
| |