// See LICENSE.Berkeley for license details.

#ifndef REMOTE_BITBANG_H
#define REMOTE_BITBANG_H

#include <stdint.h>
#include <sys/types.h>

extern bool enable_simjtag;
extern uint16_t remote_jtag_port;

extern "C" void jtag_init();

class remote_bitbang_t {
public:
  // Create a new server, listening for connections from localhost on the given
  // port.
  remote_bitbang_t(uint16_t port);

  // Do a bit of work.
  void tick(unsigned char *jtag_tck, unsigned char *jtag_tms, unsigned char *jtag_tdi, unsigned char *jtag_trstn,
            unsigned char jtag_tdo);

  unsigned char done() {
    return quit;
  }

  int exit_code() {
    return err;
  }

private:
  int err;

  unsigned char tck;
  unsigned char tms;
  unsigned char tdi;
  unsigned char trstn;
  unsigned char tdo;
  unsigned char quit;

  int socket_fd;
  int client_fd;

  static const ssize_t buf_size = 64 * 1024;
  char recv_buf[buf_size];
  ssize_t recv_start, recv_end;

  // Check for a client connecting, and accept if there is one.
  void accept();
  // Execute any commands the client has for us.
  // But we only execute 1 because we need time for the
  // simulation to run.
  void execute_command();

  // Reset. Currently does nothing.
  void reset();

  void set_pins(char _tck, char _tms, char _tdi);
};

#endif
