Akash901 Posted February 3, 2023 Report Share Posted February 3, 2023 time() process is a SC_METHOD, How to implement it by time() as SC_THREAD ? #include <systemc.h> SC_MODULE(timer) { sc_out<bool> intr0, intr1; sc_out<sc_uint<8>> Data_out; sc_in<sc_uint<8>> Addr, Data_in; sc_in<bool> read_en, write_en, Reset; sc_uint<8> timer_cntrl, timer_val, timer_cmp, timer_intr_status; sc_event e1, e2, e3; int NowTime = 0; int mLastUpdate = 0; void write() { if (write_en.read() == true) { Timer_update(); switch (Addr.read()) { case 0x0: timer_cntrl = Data_in.read(); e1.notify(); Disable_Timer(); break; case 0x4: break; case 0x8: timer_cmp = Data_in.read(); break; case 0xC: timer_intr_status = Data_in.read(); break; } } } void read() { if (read_en.read() == true) { switch (Addr.read()) { case 0x0: Data_out.write(timer_cntrl); break; case 0x4: Timer_update(); Data_out.write(timer_val); break; case 0x8: Data_out.write(timer_cmp); break; case 0xC: Data_out.write(timer_intr_status); break; } } } void Timer_update() { NowTime = sc_time_stamp().to_default_time_units(); //current time if (Reset.read() == 1) { timer_val = 0; timer_cmp = 0; timer_intr_status = 0; timer_val = 0; intr0 = 0; intr1 = 0; } else if (timer_cntrl & 1 << 0) { timer_val = ((NowTime) - mLastUpdate) / (20) % (256); } } void time() { static sc_time time; static int temp = 0; static int flag = 0; if ((time != SC_ZERO_TIME) && (timer_cntrl & 1 << 0)) { int temp = time.to_default_time_units() + mLastUpdate; int time_delay = temp - NowTime; e1.notify(time_delay, SC_NS); time = SC_ZERO_TIME; } else if (timer_cntrl & 1 << 0) { switch (temp) { case 0: next_trigger(20 * (timer_cmp + flag), SC_NS); temp = 1; break; case 1: if (timer_cntrl & 1 << 1) { intr0 = 1; timer_intr_status |= 1 << 0; e2.notify(20, SC_NS); } next_trigger(20 * (255 - timer_cmp), SC_NS); temp = 2; break; case 2: if (timer_cntrl & 1 << 2) { intr1 = 1; timer_intr_status |= 1 << 1; e3.notify(20, SC_NS); } next_trigger(0, SC_NS); temp = 0; flag = 1; break; } } else { time = sc_time_stamp(); } } void Disable_Timer() { static int temp1 = 0; static int temp2 = 0; static bool flag = 0; if (!(timer_cntrl & 1 << 0) && !flag && NowTime) { temp1 = NowTime; flag = 1; } if ((timer_cntrl & 1 << 0) && flag) { temp2 = NowTime; flag = 0; mLastUpdate = temp2 - temp1; } } void interrupt_disable() { while (true) { wait(); if (intr0.read() == 1 || intr1.read() == 1) { intr0 = 0; intr1 = 0; } } } SC_CTOR(timer) { SC_METHOD(write); sensitive << write_en; SC_METHOD(read); sensitive << read_en; SC_(time); sensitive << e1; SC_THREAD(interrupt_disable); sensitive << e2 << e3; } }; Quote Link to comment Share on other sites More sharing options...
karthickg Posted February 4, 2023 Report Share Posted February 4, 2023 Converting a `SC_METHOD` to an equivalent `SC_THREAD` is reasonably simple.. Are you clear about what "next_trigger" does in the time() method? Can you explain how you would approach the problem - so folks here can help with specific questions? There are few issues in your code not related to the main question. Quote Link to comment Share on other sites More sharing options...
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