diff options
Diffstat (limited to 'src/systemcmds/tests/test_uart_baudchange.c')
| -rw-r--r-- | src/systemcmds/tests/test_uart_baudchange.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/src/systemcmds/tests/test_uart_baudchange.c b/src/systemcmds/tests/test_uart_baudchange.c new file mode 100644 index 000000000..609a65c62 --- /dev/null +++ b/src/systemcmds/tests/test_uart_baudchange.c @@ -0,0 +1,158 @@ +/**************************************************************************** + * 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 <termios.h> +#include <string.h> + +#include <arch/board/board.h> + +#include "tests.h" + +#include <math.h> +#include <float.h> + + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: test_led + ****************************************************************************/ + +int test_uart_baudchange(int argc, char *argv[]) +{ + int uart2_nwrite = 0; + + /* assuming NuttShell is on UART1 (/dev/ttyS0) */ + int uart2 = open("/dev/ttyS1", O_RDWR | O_NONBLOCK | O_NOCTTY); // + + if (uart2 < 0) { + printf("ERROR opening UART2, aborting..\n"); + return uart2; + } + + struct termios uart2_config; + + struct termios uart2_config_original; + + int termios_state = 0; + +#define UART_BAUDRATE_RUNTIME_CONF +#ifdef UART_BAUDRATE_RUNTIME_CONF + + if ((termios_state = tcgetattr(uart2, &uart2_config)) < 0) { + printf("ERROR getting termios config for UART2: %d\n", termios_state); + exit(termios_state); + } + + memcpy(&uart2_config_original, &uart2_config, sizeof(struct termios)); + + /* Set baud rate */ + if (cfsetispeed(&uart2_config, B9600) < 0 || cfsetospeed(&uart2_config, B9600) < 0) { + printf("ERROR setting termios config for UART2: %d\n", termios_state); + exit(ERROR); + } + + if ((termios_state = tcsetattr(uart2, TCSANOW, &uart2_config)) < 0) { + printf("ERROR setting termios config for UART2\n"); + exit(termios_state); + } + + /* Set back to original settings */ + if ((termios_state = tcsetattr(uart2, TCSANOW, &uart2_config_original)) < 0) { + printf("ERROR setting termios config for UART2\n"); + exit(termios_state); + } + +#endif + + uint8_t sample_uart2[] = {'U', 'A', 'R', 'T', '2', ' ', '#', 0, '\n'}; + + int i, r; + + for (i = 0; i < 100; i++) { + /* uart2 -> */ + r = write(uart2, sample_uart2, sizeof(sample_uart2)); + + if (r > 0) + uart2_nwrite += r; + } + + close(uart2); + + printf("uart2_nwrite %d\n", uart2_nwrite); + + return OK; +} |