forked from Archive/PX4-Autopilot
132 lines
4.5 KiB
C
132 lines
4.5 KiB
C
/****************************************************************************
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* px4/sensors/test_gpio.c
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*
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* Copyright (C) 2012 PX4 Development Team. All rights reserved.
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* Lorenz Meier <lm@inf.ethz.ch>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <debug.h>
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#include <arch/board/board.h>
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#include "tests.h"
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#include <math.h>
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#include <float.h>
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#include <drivers/drv_hrt.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: test_led
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****************************************************************************/
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int test_uart_send(int argc, char *argv[])
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{
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/* input handling */
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char *uart_name = "/dev/ttyS3";
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if (argc > 1) uart_name = argv[1];
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/* assuming NuttShell is on UART1 (/dev/ttyS0) */
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int test_uart = open(uart_name, O_RDWR | O_NONBLOCK | O_NOCTTY); //
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if (test_uart < 0) {
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printf("ERROR opening UART %s, aborting..\n", uart_name);
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return test_uart;
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} else {
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printf("Writing to UART %s\n", uart_name);
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}
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char sample_test_uart[25];// = {'S', 'A', 'M', 'P', 'L', 'E', ' ', '\n'};
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int i, n;
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uint64_t start_time = hrt_absolute_time();
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for (i = 0; i < 30000; i++) {
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n = sprintf(sample_test_uart, "SAMPLE #%d\n", i);
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write(test_uart, sample_test_uart, n);
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}
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int interval = hrt_absolute_time() - start_time;
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int bytes = i * sizeof(sample_test_uart);
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printf("Wrote %d bytes in %d ms on UART %s\n", bytes, interval / 1000, uart_name);
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close(test_uart);
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return 0;
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}
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