arch_xt_adc.h

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/*
 * arch_xt_adc.h
 *
 *  Copyright 2021-2026 Clement Savergne <csavergne@yahoo.com>
 
    This file is part of yasim-avr.
 
    yasim-avr is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    yasim-avr is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with yasim-avr.  If not, see <http://www.gnu.org/licenses/>.
 */
 
//=======================================================================================
 
 
#ifndef __YASIMAVR_XT_ADC_H__
#define __YASIMAVR_XT_ADC_H__
 
#include "arch_xt_globals.h"
#include "core/sim_interrupt.h"
#include "ioctrl_common/sim_adc.h"
#include "ioctrl_common/sim_timer.h"
#include "ioctrl_common/sim_vref.h"
 
YASIMAVR_BEGIN_NAMESPACE
 
 
//=======================================================================================
 
struct ArchXT_ADCConfig {
 
    struct reference_config_t : base_reg_config_t {
        VREF::Source source;
    };
 
    std::vector<ADC::channel_config_t> channels;
    std::vector<reference_config_t> references;
    unsigned int vref_channel;
    std::vector<unsigned long> clk_ps_factors;
    unsigned long clk_ps_max;
    std::vector<unsigned long> init_delays;
    reg_addr_t reg_base;
    int_vect_t iv_resready;
    int_vect_t iv_wincmp;
    double temp_cal_25C;
    double temp_cal_coef;
 
};
 
class AVR_ARCHXT_PUBLIC_API ArchXT_ADC : public Peripheral {
 
public:
 
    ArchXT_ADC(int num, const ArchXT_ADCConfig& config);
 
    virtual bool init(Device& device) override;
    virtual void reset(int flags) override;
    virtual bool ctlreq(ctlreq_id_t req, ctlreq_data_t* data) override;
    virtual uint8_t ioreg_read_handler(reg_addr_t addr, uint8_t value) override;
    virtual void ioreg_write_handler(reg_addr_t addr, const ioreg_write_t& data) override;
    virtual void sleep(bool on, SleepMode mode) override;
 
private:
 
    enum State {
        ADC_Disabled,
        ADC_Idle,
        ADC_Starting,
        ADC_PendingConversion,
        ADC_PendingRaise,
    };
 
    const ArchXT_ADCConfig& m_config;
    State m_state;
    bool m_first;
    PrescaledTimer m_timer;
    BoundFunctionSignalHook<ArchXT_ADC> m_timer_hook;
    double m_temperature;
    uint8_t m_latched_ch_mux;
    uint8_t m_latched_ref_mux;
    uint8_t m_accum_counter;
    uint16_t m_result;
    uint16_t m_win_lothres;
    uint16_t m_win_hithres;
    InterruptFlag m_res_intflag;
    InterruptFlag m_cmp_intflag;
    Signal m_signal;
 
    void start_conversion_cycle();
    void read_analog_value();
    void timer_raised(const signal_data_t& sigdata, int hooktag);
 
};
 
 
YASIMAVR_END_NAMESPACE
 
#endif //__YASIMAVR_XT_ADC_H__