euphony

[euphony]

Hi,

 

I'm trying to implement a FIR Filter with a series of FIR node and the data_in of every fir node is connected to the data_out of the next fir node and the last data_out is connected to the data_in of the accumulator.
I've implemented the code but during runtime it's giving an error Error: (E109) complete binding failed: port not bound: port 'FIR_NOD[17].port_4' (sc_out)
here my NUM_TAP is 18

 

 

 

 

I'm attaching the code with this message.
It seems to me that I have connected the ports correctly. Please help

#include "systemc.h"
#include "type.h"
#include "mem.h"
#include "fir_node.h"
#include "accumulator.h"
#include "main.h"
 
int sc_main(int argc, char* argv[]) {
    int i;
    char nodeName[19];

    //signals to connect data and mul ports
    sc_signal<data_type> data_sig[NUM_TAP + 1];
    sc_signal<data_type> mul_sig[NUM_TAP];
    sc_signal<data_type> result;

    //system clock
    sc_clock* sys_clock;

    //pointer for modules
    Memory* mem;
    FirNode* firnodes[NUM_TAP];
    Accumulator* accu;

    // create global clock
    sys_clock = new sc_clock("SYSTEM_CLOCK", 1, SC_NS);
    
    //Construct Memory and Accumulator modules
    mem = new Memory("MEMORY");
    accu = new Accumulator("ACCUMULATOR");
    //Construct FirNodes (assign coefficient to each node)
    for (i = 0; i < NUM_TAP; i++) {
        sprintf(nodeName, "FIR_NOD[%d]", i);
        firnodes = new FirNode(nodeName, COEFF);
    }

    //connect ports of memory
    mem->data_read(data_sig[0]);
    mem->clock(*sys_clock);
    mem->data_write(result);

    //[Missing] connect ports of fir_nodes
    
    for (i=0;i<NUM_TAP;i++)
    {
    firnodes->data_in(data_sig);
    firnodes->mul_out(mul_sig);
    firnodes->clock(*sys_clock);
    firnodes->data_out(data_sig[i+1]);
    }
    
   
    //connect ports of accumulator
    accu->clock(*sys_clock);
    accu->data_in(data_sig[NUM_TAP]);
    for (i = 0; i < NUM_TAP; i++) {
        accu->mul_in(mul_sig);
    }
    accu->data_out(result);

    //start simulation
    sc_start(300, SC_NS);
    return 0;
}
please suggest as of what changes i can make

[David Black]

Port not bound means that you forgot to connect a port. SystemC does not allow unconnected ports (at least not without some extra work). If you didn't name your port instances explicitly, SystemC arranges to have them named "port_0", "port_1", "port_2", ... etc. So you apparently have five ports on some module and you've only connected four of them.

[euphony]

yeah thank you. i got it:)

[Bas Arts]

I guess you need some extra changes:

firnodes = new FirNode(...)

firnodes->data_in(...)

accu->mul_in(mul_sig)

etc.

[Bas Arts]

Forget that last post, it seems that brackets etc. are not displayed in the posts.