test05.cpp revision 12855:588919e0e4aa 
1#include "systemc.h"
2
3typedef sc_biguint<121> atom;  // Value to be pipe delayed.
4
5//==============================================================================
6// esc_dpipe<T,N> - DELAY PIPELINE FOR AN ARBITRARY CLASS:
7//==============================================================================
8template<class T, int N>
9SC_MODULE(esc_dpipe) {
10  public:
11    typedef sc_export<sc_signal_inout_if<T> > in;   // To pipe port type.
12    typedef sc_export<sc_signal_in_if<T> >    out;  // From pipe port type.
13
14  public:
15    SC_CTOR(esc_dpipe)
16    {
17        m_in(m_pipe[0]);
18        m_out(m_pipe[N-1]);
19        SC_METHOD(rachet);
20        sensitive << m_clk.pos();
21    }
22
23  protected:
24    void rachet()
25    {
26        for ( int i = N-1; i > 0; i-- )
27        {
28            m_pipe[i].write(m_pipe[i-1].read());
29        }
30    }
31
32  public:
33    sc_in_clk m_clk;  // Pipe synchronization.
34    in        m_in;   // Input to delay pipe.
35    out       m_out;  // Output from delay pipe.
36
37  protected:
38    sc_signal<T> m_pipe[N]; // Pipeline stages.
39};
40
41
42// Testbench reader of values from the pipe:
43
44SC_MODULE(Reader)
45{
46    SC_CTOR(Reader)
47    {
48        SC_METHOD(extract)
49        sensitive << m_clk.pos();
50        dont_initialize();
51    }
52
53    void extract()
54    {
55        cout << sc_time_stamp() << ": " << m_from_pipe.read() << endl;
56    }
57
58    sc_in_clk    m_clk;         // Module synchronization.
59    sc_in<atom > m_from_pipe;   // Output from delay pipe.
60};
61
62
63
64// Testbench writer of values to the pipe:
65
66SC_MODULE(Writer)
67{
68    SC_CTOR(Writer)
69    {
70        SC_METHOD(insert)
71        sensitive << m_clk.pos();
72        m_counter = 0;
73    }
74
75    void insert()
76    {
77        m_to_pipe.write(m_counter);
78        m_counter++;
79    }
80
81    sc_in_clk       m_clk;       // Module synchronization.
82    atom            m_counter;   // Write value.
83    sc_inout<atom > m_to_pipe;   // Input for delay pipe.
84};
85
86// Main program
87
88int sc_main(int argc, char* argv[])
89{
90    sc_clock          clock;
91    esc_dpipe<atom,4> delay("pipe");
92    Reader            reader("reader");
93    Writer            writer("writer");
94
95    delay.m_clk(clock);
96
97    reader.m_clk(clock);
98    reader.m_from_pipe(delay.m_out);
99
100    writer.m_clk(clock);
101    writer.m_to_pipe(delay.m_in);
102
103    sc_start(50, SC_NS);
104
105    return 0;
106}
107