retronetworking
/
freeswitch
13
0
Fork 0
Code Pull Requests Releases Activity
freeswitch/libs/spandsp/tests/async_tests.c

251 lines
7.3 KiB
C
Raw Blame History

/*
* SpanDSP - a series of DSP components for telephony
*
* async_tests.c - Tests for asynchronous serial processing.
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2004 Steve Underwood
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: async_tests.c,v 1.18 2008/11/30 10:17:31 steveu Exp $
*/
/*! \file */
/*! \page async_tests_page Asynchronous bit stream tests
\section async_tests_page_sec_1 What does it do?
*/
#if defined(HAVE_CONFIG_H)
#include "config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <audiofile.h>
//#if defined(WITH_SPANDSP_INTERNALS)
#define SPANDSP_EXPOSE_INTERNAL_STRUCTURES
//#endif
#include "spandsp.h"
async_rx_state_t rx_async;
async_tx_state_t tx_async;
int full_len;
uint8_t old_buf[1000];
uint8_t new_buf[1000];
volatile int tx_async_chars;
volatile int rx_async_chars;
volatile int rx_async_char_mask;
int v14_test_async_tx_get_bit(void *user_data);
int v14_test_async_tx_get_bit(void *user_data)
{
async_tx_state_t *s;
int bit;
static int destuff = 0;
/* Special routine to test V.14 rate adaption, by randomly skipping
stop bits. */
s = (async_tx_state_t *) user_data;
if (s->bitpos == 0)
{
/* Start bit */
bit = 0;
s->byte_in_progress = s->get_byte(s->user_data);
s->parity_bit = 0;
s->bitpos++;
}
else if (s->bitpos <= s->data_bits)
{
bit = s->byte_in_progress & 1;
s->byte_in_progress >>= 1;
s->parity_bit ^= bit;
s->bitpos++;
if (!s->parity && s->bitpos == s->data_bits + 1)
{
/* Drop the stop bit on every fourth character for V.14 simulation*/
if ((++destuff & 3) == 0)
s->bitpos = 0;
}
}
else if (s->parity && s->bitpos == s->data_bits + 1)
{
if (s->parity == ASYNC_PARITY_ODD)
s->parity_bit ^= 1;
bit = s->parity_bit;
s->bitpos++;
/* Drop the stop bit on every fourth character for V.14 simulation */
if ((++destuff & 3) == 0)
s->bitpos = 0;
}
else
{
/* Stop bit(s) */
bit = 1;
s->bitpos++;
if (s->bitpos > s->data_bits + s->stop_bits)
s->bitpos = 0;
}
return bit;
}
/*- End of function --------------------------------------------------------*/
static int test_get_async_byte(void *user_data)
{
int byte;
byte = tx_async_chars & 0xFF;
tx_async_chars++;
return byte;
}
/*- End of function --------------------------------------------------------*/
static void test_put_async_byte(void *user_data, int byte)
{
if ((rx_async_chars & rx_async_char_mask) != byte)
printf("Received byte is 0x%X (expected 0x%X)\n", byte, rx_async_chars);
rx_async_chars++;
}
/*- End of function --------------------------------------------------------*/
int main(int argc, char *argv[])
{
int bit;
printf("Test with async 8N1\n");
async_tx_init(&tx_async, 8, ASYNC_PARITY_NONE, 1, FALSE, test_get_async_byte, NULL);
async_rx_init(&rx_async, 8, ASYNC_PARITY_NONE, 1, FALSE, test_put_async_byte, NULL);
tx_async_chars = 0;
rx_async_chars = 0;
rx_async_char_mask = 0xFF;
while (rx_async_chars < 1000)
{
bit = async_tx_get_bit(&tx_async);
async_rx_put_bit(&rx_async, bit);
}
printf("Chars=%d/%d, PE=%d, FE=%d\n", tx_async_chars, rx_async_chars, rx_async.parity_errors, rx_async.framing_errors);
if (tx_async_chars != rx_async_chars
||
rx_async.parity_errors
||
rx_async.framing_errors)
{
printf("Test failed.\n");
exit(2);
}
printf("Test with async 7E1\n");
async_tx_init(&tx_async, 7, ASYNC_PARITY_EVEN, 1, FALSE, test_get_async_byte, NULL);
async_rx_init(&rx_async, 7, ASYNC_PARITY_EVEN, 1, FALSE, test_put_async_byte, NULL);
tx_async_chars = 0;
rx_async_chars = 0;
rx_async_char_mask = 0x7F;
while (rx_async_chars < 1000)
{
bit = async_tx_get_bit(&tx_async);
async_rx_put_bit(&rx_async, bit);
}
printf("Chars=%d/%d, PE=%d, FE=%d\n", tx_async_chars, rx_async_chars, rx_async.parity_errors, rx_async.framing_errors);
if (tx_async_chars != rx_async_chars
||
rx_async.parity_errors
||
rx_async.framing_errors)
{
printf("Test failed.\n");
exit(2);
}
printf("Test with async 8O1\n");
async_tx_init(&tx_async, 8, ASYNC_PARITY_ODD, 1, FALSE, test_get_async_byte, NULL);
async_rx_init(&rx_async, 8, ASYNC_PARITY_ODD, 1, FALSE, test_put_async_byte, NULL);
tx_async_chars = 0;
rx_async_chars = 0;
rx_async_char_mask = 0xFF;
while (rx_async_chars < 1000)
{
bit = async_tx_get_bit(&tx_async);
async_rx_put_bit(&rx_async, bit);
}
printf("Chars=%d/%d, PE=%d, FE=%d\n", tx_async_chars, rx_async_chars, rx_async.parity_errors, rx_async.framing_errors);
if (tx_async_chars != rx_async_chars
||
rx_async.parity_errors
||
rx_async.framing_errors)
{
printf("Test failed.\n");
exit(2);
}
printf("Test with async 8O1 and V.14\n");
async_tx_init(&tx_async, 8, ASYNC_PARITY_ODD, 1, TRUE, test_get_async_byte, NULL);
async_rx_init(&rx_async, 8, ASYNC_PARITY_ODD, 1, TRUE, test_put_async_byte, NULL);
tx_async_chars = 0;
rx_async_chars = 0;
rx_async_char_mask = 0xFF;
while (rx_async_chars < 1000)
{
bit = v14_test_async_tx_get_bit(&tx_async);
async_rx_put_bit(&rx_async, bit);
}
printf("Chars=%d/%d, PE=%d, FE=%d\n", tx_async_chars, rx_async_chars, rx_async.parity_errors, rx_async.framing_errors);
if (tx_async_chars != rx_async_chars + 1
||
rx_async.parity_errors
||
rx_async.framing_errors)
{
printf("Test failed.\n");
exit(2);
}
printf("Test with async 5N2\n");
async_tx_init(&tx_async, 5, ASYNC_PARITY_NONE, 2, FALSE, test_get_async_byte, NULL);
async_rx_init(&rx_async, 5, ASYNC_PARITY_NONE, 2, FALSE, test_put_async_byte, NULL);
tx_async_chars = 0;
rx_async_chars = 0;
rx_async_char_mask = 0x1F;
while (rx_async_chars < 1000)
{
bit = async_tx_get_bit(&tx_async);
async_rx_put_bit(&rx_async, bit);
}
printf("Chars=%d/%d, PE=%d, FE=%d\n", tx_async_chars, rx_async_chars, rx_async.parity_errors, rx_async.framing_errors);
if (tx_async_chars != rx_async_chars
||
rx_async.parity_errors
||
rx_async.framing_errors)
{
printf("Test failed.\n");
exit(2);
}
printf("Tests passed.\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
/*- End of file ------------------------------------------------------------*/
View Git Blame Copy Permalink