80 lines
3.0 KiB
C++
80 lines
3.0 KiB
C++
/*******************************************************************************
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* Copyright (C) 2017,2018 MINRES Technologies GmbH
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are 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,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials 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
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*******************************************************************************/
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#ifndef _PWM_H_
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#define _PWM_H_
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#include "cci_configuration"
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#include "scc/signal_initiator_mixin.h"
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#include "scc/signal_target_mixin.h"
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#include "scc/tlm_target.h"
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#include <tlm/tlm_signal.h>
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namespace sysc {
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class pwm_regs;
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class pwm : public sc_core::sc_module, public scc::tlm_target<> {
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public:
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SC_HAS_PROCESS(pwm);// NOLINT
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sc_core::sc_in<sc_core::sc_time> clk_i;
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sc_core::sc_in<bool> rst_i;
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sc_core::sc_vector<scc::tlm_signal_bool_opt_out> cmpgpio_o;
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sc_core::sc_vector<sc_core::sc_out<bool>> cmpip_o;
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pwm(sc_core::sc_module_name nm);
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virtual ~pwm() override; // need to keep it in source file because of fwd declaration of gpio_regs
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protected:
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sc_core::sc_time clk, last_clk;
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void clock_cb();
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void reset_cb();
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inline double get_pulses(sc_core::sc_time d) {
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auto t = sc_core::sc_time_stamp() + d;
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return last_clk > sc_core::SC_ZERO_TIME ? (t - last_cnt_update) / last_clk : 0.;
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}
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void update_counter();
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void write_cmpgpio(size_t, bool);
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std::unique_ptr<pwm_regs> regs;
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uint64_t current_cnt;
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sc_core::sc_time last_cnt_update;
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double clk_remainder = 0.0;
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bool last_enable = false, reset_cnt = false;
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sc_core::sc_event update_counter_evt;
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std::array<bool, 4> pwmcmp_ip;
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};
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} /* namespace sysc */
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#endif /* _GPIO_H_ */
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