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Diffstat (limited to 'apps/px4/tests/test_uart_send.c')
-rw-r--r-- | apps/px4/tests/test_uart_send.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/apps/px4/tests/test_uart_send.c b/apps/px4/tests/test_uart_send.c new file mode 100644 index 000000000..83d205440 --- /dev/null +++ b/apps/px4/tests/test_uart_send.c @@ -0,0 +1,133 @@ +/**************************************************************************** + * px4/sensors/test_gpio.c + * + * Copyright (C) 2012 PX4 Development Team. All rights reserved. + * Lorenz Meier <lm@inf.ethz.ch> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/types.h> + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <errno.h> +#include <debug.h> + +#include <arch/board/board.h> + +#include <arch/board/drv_led.h> + +#include "tests.h" + +#include <math.h> +#include <float.h> +#include <arch/board/up_hrt.h> + + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: test_led + ****************************************************************************/ + +int test_uart_send(int argc, char *argv[]) +{ + /* input handling */ + char *uart_name = "/dev/ttyS3"; + + if (argc > 1) uart_name = argv[1]; + + /* assuming NuttShell is on UART1 (/dev/ttyS0) */ + int test_uart = open(uart_name, O_RDWR | O_NONBLOCK | O_NOCTTY); // + + if (test_uart < 0) { + printf("ERROR opening UART %s, aborting..\n", uart_name); + return test_uart; + + } else { + printf("Writing to UART %s\n", uart_name); + } + + char sample_test_uart[25];// = {'S', 'A', 'M', 'P', 'L', 'E', ' ', '\n'}; + + int i, r, n; + + uint64_t start_time = hrt_absolute_time(); + + for (i = 0; i < 30000; i++) { + n = sprintf(sample_test_uart, "SAMPLE #%d\n", i); + write(test_uart, sample_test_uart, n); + } + + int interval = hrt_absolute_time() - start_time; + + int bytes = i * sizeof(sample_test_uart); + + printf("Wrote %d bytes in %d ms on UART %s\n", bytes, interval / 1000, uart_name); + + close(test_uart); + + return 0; +} |