HIFIVE1-VP/platform/incl/sysc/SiFive/pwm.h

80 lines
3.0 KiB
C++

/*******************************************************************************
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#ifndef _PWM_H_
#define _PWM_H_
#include "cci_configuration"
#include "tlm/scc/signal_initiator_mixin.h"
#include "tlm/scc/signal_target_mixin.h"
#include "scc/tlm_target.h"
#include <tlm/scc/tlm_signal.h>
namespace sysc {
class pwm_regs;
class pwm : public sc_core::sc_module, public scc::tlm_target<> {
public:
SC_HAS_PROCESS(pwm);// NOLINT
sc_core::sc_in<sc_core::sc_time> clk_i;
sc_core::sc_in<bool> rst_i;
sc_core::sc_vector<tlm::scc::tlm_signal_bool_opt_out> cmpgpio_o;
sc_core::sc_vector<sc_core::sc_out<bool>> cmpip_o;
pwm(sc_core::sc_module_name nm);
virtual ~pwm() override; // need to keep it in source file because of fwd declaration of gpio_regs
protected:
sc_core::sc_time clk, last_clk;
void clock_cb();
void reset_cb();
inline double get_pulses(sc_core::sc_time d) {
auto t = sc_core::sc_time_stamp() + d;
return last_clk > sc_core::SC_ZERO_TIME ? (t - last_cnt_update) / last_clk : 0.;
}
void update_counter();
void write_cmpgpio(size_t, bool);
std::unique_ptr<pwm_regs> regs;
uint64_t current_cnt;
sc_core::sc_time last_cnt_update;
double clk_remainder = 0.0;
bool last_enable = false, reset_cnt = false;
sc_core::sc_event update_counter_evt;
std::array<bool, 4> pwmcmp_ip;
};
} /* namespace sysc */
#endif /* _GPIO_H_ */