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/* Copyright 2012 Brian Swetland <swetland@frotz.net>

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include <stdio.h>

#include <stdlib.h>

#include <ctype.h>

#include "jtag.h"

#define VIR_CTRL        0x0

#define VIR_ADDR        0x1

#define VIR_DATA        0x2

#define VIR_UART        0x3

int main(int argc, char **argv) {

        unsigned bits;

        if (jtag_open_virtual_device(0x00))

                return -1;

        jtag_vir(VIR_UART);

        for (;;) {

                jtag_vdr(9, 0, &bits);

                if (bits & 0x100) {

                        bits &= 0xFF;

                        if ((bits < ' ') || (bits > 127))

                                fputc('.', stderr);

                        else

                                fputc(bits, stderr);

                }

        }

        return 0;

}