HIFIVE1-VP/platform/incl/sysc/top/mcp_adc.h

121 lines
4.0 KiB
C++

/*******************************************************************************
* Copyright (C) 2018 MINRES Technologies GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* POSSIBILITY OF SUCH DAMAGE.
*
*******************************************************************************/
#ifndef _SYSC_TOP_MCP3008_H_
#define _SYSC_TOP_MCP3008_H_
#include "cci_configuration"
#include "tlm/scc/signal_initiator_mixin.h"
#include "tlm/scc/signal_target_mixin.h"
#include "sysc/tlm_extensions.h"
#include <sysc/kernel/sc_module.h>
#include <sysc/utils/sc_vector.h>
#include <tlm/scc/tlm_signal.h>
namespace sysc {
class mcp_adc : public sc_core::sc_module {
public:
template <typename TYPE>
static std::unique_ptr<mcp_adc> create(sc_core::sc_module_name nm);
tlm::scc::tlm_signal_logic_in sck_i;
tlm::scc::tlm_signal_logic_out miso_o;
tlm::scc::tlm_signal_logic_in mosi_i;
tlm::scc::tlm_signal_logic_in cs_i;
sc_core::sc_in<double> vref_i;
sc_core::sc_vector<sc_core::sc_in<double>> ch_i;
mcp_adc(mcp_adc &other) = delete;
mcp_adc(mcp_adc &&other) = delete;
mcp_adc &operator=(mcp_adc &other) = delete;
mcp_adc &operator=(mcp_adc &&other) = delete;
~mcp_adc() override = default;
protected:
mcp_adc(sc_core::sc_module_name nm, size_t channel_no)
: sc_core::sc_module(nm)
, NAMED(sck_i)
, NAMED(miso_o)
, NAMED(mosi_i)
, NAMED(cs_i)
, NAMED(vref_i)
, NAMED(ch_i, channel_no) {}
};
class mcp_3008 : public mcp_adc {
public:
SC_HAS_PROCESS(mcp_3008);// NOLINT
mcp_3008(sc_core::sc_module_name nm);
~mcp_3008() override = default;
private:
tlm::tlm_sync_enum receive(tlm::scc::tlm_signal_gp<sc_dt::sc_logic> &, tlm::tlm_phase &, sc_core::sc_time &);
void do_conversion();
unsigned idx, rx_bits;
std::array<uint8_t, 3> rx_bytes, tx_bytes;
sc_dt::sc_logic mosi_v, miso_v, cs_v;
sysc::tlm_signal_spi_extension *ext, tx_ext;
sc_core::sc_time last_tx_start;
};
class mcp_3208 : public mcp_adc {
public:
SC_HAS_PROCESS(mcp_3208);// NOLINT
mcp_3208(sc_core::sc_module_name nm);
~mcp_3208() override = default;
private:
tlm::tlm_sync_enum receive(tlm::scc::tlm_signal_gp<sc_dt::sc_logic> &, tlm::tlm_phase &, sc_core::sc_time &);
void sample_inputs();
void do_conversion();
unsigned idx, rx_bits, byte_offs, bit_offs;
std::array<uint8_t, 3> rx_bytes, tx_bytes;
sc_dt::sc_logic mosi_v, sck_v, cs_v;
sysc::tlm_signal_spi_extension *ext, tx_ext;
sc_core::sc_time last_tx_start;
sc_core::sc_event clk_sample_evt;
};
} /* namespace sysc */
#endif /* _SYSC_TOP_MCP3008_H_ */