Merge branch 'master' into px4io-i2c

This commit is contained in:
px4dev 2013-01-28 21:58:55 -08:00
commit 9197df46dd
16 changed files with 815 additions and 0 deletions

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.gitignore vendored
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cscope.out
.configX-e
nuttx-export.zip
.~lock.*
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mavlink/include/mavlink/v0.9/
.*.swp

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############################################################################
#
# Copyright (C) 2012 PX4 Development Team. All rights reserved.
#
# 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 PX4 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.
#
############################################################################
#
# Graupner HoTT Telemetry application.
#
# The following line is required for accessing UARTs directly.
INCLUDES = $(TOPDIR)/arch/arm/src/stm32 $(TOPDIR)/arch/arm/src/common
APPNAME = hott_telemetry
PRIORITY = SCHED_PRIORITY_DEFAULT
STACKSIZE = 2048
include $(APPDIR)/mk/app.mk

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@ -0,0 +1,311 @@
/****************************************************************************
*
* Copyright (C) 2012 PX4 Development Team. All rights reserved.
* Author: @author Simon Wilks <sjwilks@gmail.com>
*
* 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 PX4 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.
*
****************************************************************************/
/**
* @file hott_telemetry_main.c
*
* Graupner HoTT Telemetry implementation.
*
* The HoTT receiver polls each device at a regular interval at which point
* a data packet can be returned if necessary.
*
* TODO: Add support for at least the vario and GPS sensor data.
*
*/
#include <fcntl.h>
#include <nuttx/config.h>
#include <poll.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include <systemlib/systemlib.h>
#include "messages.h"
/* The following are equired for UART direct manipulation. */
#include <arch/board/board.h>
#include "up_arch.h"
#include "chip.h"
#include "stm32_internal.h"
static int thread_should_exit = false; /**< Deamon exit flag */
static int thread_running = false; /**< Deamon status flag */
static int deamon_task; /**< Handle of deamon task / thread */
static char *daemon_name = "hott_telemetry";
static char *commandline_usage = "usage: hott_telemetry start|status|stop [-d <device>]";
/* A little console messaging experiment - console helper macro */
#define FATAL_MSG(_msg) fprintf(stderr, "[%s] %s\n", daemon_name, _msg); exit(1);
#define ERROR_MSG(_msg) fprintf(stderr, "[%s] %s\n", daemon_name, _msg);
#define INFO_MSG(_msg) printf("[%s] %s\n", daemon_name, _msg);
/**
* Deamon management function.
*/
__EXPORT int hott_telemetry_main(int argc, char *argv[]);
/**
* Mainloop of deamon.
*/
int hott_telemetry_thread_main(int argc, char *argv[]);
static int read_data(int uart, int *id);
static int send_data(int uart, uint8_t *buffer, int size);
static int open_uart(const char *device, struct termios *uart_config_original)
{
/* baud rate */
int speed = B19200;
int uart;
/* open uart */
uart = open(device, O_RDWR | O_NOCTTY);
if (uart < 0) {
char msg[80];
sprintf(msg, "Error opening port: %s\n", device);
FATAL_MSG(msg);
}
/* Try to set baud rate */
struct termios uart_config;
int termios_state;
/* Back up the original uart configuration to restore it after exit */
char msg[80];
if ((termios_state = tcgetattr(uart, uart_config_original)) < 0) {
sprintf(msg, "Error getting baudrate / termios config for %s: %d\n", device, termios_state);
close(uart);
FATAL_MSG(msg);
}
/* Fill the struct for the new configuration */
tcgetattr(uart, &uart_config);
/* Clear ONLCR flag (which appends a CR for every LF) */
uart_config.c_oflag &= ~ONLCR;
/* Set baud rate */
if (cfsetispeed(&uart_config, speed) < 0 || cfsetospeed(&uart_config, speed) < 0) {
sprintf(msg, "Error setting baudrate / termios config for %s: %d (cfsetispeed, cfsetospeed)\n",
device, termios_state);
close(uart);
FATAL_MSG(msg);
}
if ((termios_state = tcsetattr(uart, TCSANOW, &uart_config)) < 0) {
sprintf(msg, "Error setting baudrate / termios config for %s (tcsetattr)\n", device);
close(uart);
FATAL_MSG(msg);
}
/* Activate single wire mode */
ioctl(uart, TIOCSSINGLEWIRE, SER_SINGLEWIRE_ENABLED);
return uart;
}
int read_data(int uart, int *id)
{
const int timeout = 1000;
struct pollfd fds[] = { { .fd = uart, .events = POLLIN } };
char mode;
if (poll(fds, 1, timeout) > 0) {
/* Get the mode: binary or text */
read(uart, &mode, 1);
/* Read the device ID being polled */
read(uart, id, 1);
/* if we have a binary mode request */
if (mode != BINARY_MODE_REQUEST_ID) {
return ERROR;
}
} else {
ERROR_MSG("UART timeout on TX/RX port");
return ERROR;
}
return OK;
}
int send_data(int uart, uint8_t *buffer, int size)
{
usleep(POST_READ_DELAY_IN_USECS);
uint16_t checksum = 0;
for (int i = 0; i < size; i++) {
if (i == size - 1) {
/* Set the checksum: the first uint8_t is taken as the checksum. */
buffer[i] = checksum & 0xff;
} else {
checksum += buffer[i];
}
write(uart, &buffer[i], 1);
/* Sleep before sending the next byte. */
usleep(POST_WRITE_DELAY_IN_USECS);
}
/* A hack the reads out what was written so the next read from the receiver doesn't get it. */
/* TODO: Fix this!! */
uint8_t dummy[size];
read(uart, &dummy, size);
return OK;
}
int hott_telemetry_thread_main(int argc, char *argv[])
{
INFO_MSG("starting");
thread_running = true;
char *device = "/dev/ttyS1"; /**< Default telemetry port: USART2 */
/* read commandline arguments */
for (int i = 0; i < argc && argv[i]; i++) {
if (strcmp(argv[i], "-d") == 0 || strcmp(argv[i], "--device") == 0) { //device set
if (argc > i + 1) {
device = argv[i + 1];
} else {
thread_running = false;
ERROR_MSG("missing parameter to -d");
ERROR_MSG(commandline_usage);
exit(1);
}
}
}
/* enable UART, writes potentially an empty buffer, but multiplexing is disabled */
struct termios uart_config_original;
int uart = open_uart(device, &uart_config_original);
if (uart < 0) {
ERROR_MSG("Failed opening HoTT UART, exiting.");
thread_running = false;
exit(ERROR);
}
messages_init();
uint8_t buffer[MESSAGE_BUFFER_SIZE];
int size = 0;
int id = 0;
while (!thread_should_exit) {
if (read_data(uart, &id) == OK) {
switch (id) {
case ELECTRIC_AIR_MODULE:
build_eam_response(buffer, &size);
break;
default:
continue; // Not a module we support.
}
send_data(uart, buffer, size);
}
}
INFO_MSG("exiting");
close(uart);
thread_running = false;
return 0;
}
/**
* Process command line arguments and tart the daemon.
*/
int hott_telemetry_main(int argc, char *argv[])
{
if (argc < 1) {
ERROR_MSG("missing command");
ERROR_MSG(commandline_usage);
exit(1);
}
if (!strcmp(argv[1], "start")) {
if (thread_running) {
INFO_MSG("deamon already running");
exit(0);
}
thread_should_exit = false;
deamon_task = task_spawn("hott_telemetry",
SCHED_DEFAULT,
SCHED_PRIORITY_MAX - 40,
2048,
hott_telemetry_thread_main,
(argv) ? (const char **)&argv[2] : (const char **)NULL);
exit(0);
}
if (!strcmp(argv[1], "stop")) {
thread_should_exit = true;
exit(0);
}
if (!strcmp(argv[1], "status")) {
if (thread_running) {
INFO_MSG("daemon is running");
} else {
INFO_MSG("daemon not started");
}
exit(0);
}
ERROR_MSG("unrecognized command");
ERROR_MSG(commandline_usage);
exit(1);
}

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/****************************************************************************
*
* Copyright (C) 2012 PX4 Development Team. All rights reserved.
* Author: @author Simon Wilks <sjwilks@gmail.com>
*
* 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 PX4 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.
*
****************************************************************************/
/**
* @file messages.c
*
*/
#include "messages.h"
#include <string.h>
#include <systemlib/systemlib.h>
#include <unistd.h>
#include <uORB/topics/battery_status.h>
#include <uORB/topics/sensor_combined.h>
static int battery_sub = -1;
static int sensor_sub = -1;
void messages_init(void)
{
battery_sub = orb_subscribe(ORB_ID(battery_status));
sensor_sub = orb_subscribe(ORB_ID(sensor_combined));
}
void build_eam_response(uint8_t *buffer, int *size)
{
/* get a local copy of the current sensor values */
struct sensor_combined_s raw;
memset(&raw, 0, sizeof(raw));
orb_copy(ORB_ID(sensor_combined), sensor_sub, &raw);
/* get a local copy of the battery data */
struct battery_status_s battery;
memset(&battery, 0, sizeof(battery));
orb_copy(ORB_ID(battery_status), battery_sub, &battery);
struct eam_module_msg msg;
*size = sizeof(msg);
memset(&msg, 0, *size);
msg.start = START_BYTE;
msg.eam_sensor_id = ELECTRIC_AIR_MODULE;
msg.sensor_id = EAM_SENSOR_ID;
msg.temperature1 = (uint8_t)(raw.baro_temp_celcius + 20);
msg.temperature2 = TEMP_ZERO_CELSIUS;
msg.main_voltage_L = (uint8_t)(battery.voltage_v * 10);
uint16_t alt = (uint16_t)(raw.baro_alt_meter + 500);
msg.altitude_L = (uint8_t)alt & 0xff;
msg.altitude_H = (uint8_t)(alt >> 8) & 0xff;
msg.stop = STOP_BYTE;
memcpy(buffer, &msg, *size);
}

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/****************************************************************************
*
* Copyright (C) 2012 PX4 Development Team. All rights reserved.
* Author: @author Simon Wilks <sjwilks@gmail.com>
*
* 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 PX4 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.
*
****************************************************************************/
/**
* @file messages.h
*
* Graupner HoTT Telemetry message generation.
*
*/
#ifndef MESSAGES_H_
#define MESSAGES_H
#include <stdlib.h>
/* The buffer size used to store messages. This must be at least as big as the number of
* fields in the largest message struct.
*/
#define MESSAGE_BUFFER_SIZE 50
/* The HoTT receiver demands a minimum 5ms period of silence after delivering its request.
* Note that the value specified here is lower than 5000 (5ms) as time is lost constucting
* the message after the read which takes some milliseconds.
*/
#define POST_READ_DELAY_IN_USECS 4000
/* A pause of 3ms is required between each uint8_t sent back to the HoTT receiver. Much lower
* values can be used in practise though.
*/
#define POST_WRITE_DELAY_IN_USECS 2000
// Protocol constants.
#define BINARY_MODE_REQUEST_ID 0x80 // Binary mode request.
#define START_BYTE 0x7c
#define STOP_BYTE 0x7d
#define TEMP_ZERO_CELSIUS 0x14
/* Electric Air Module (EAM) constants. */
#define ELECTRIC_AIR_MODULE 0x8e
#define EAM_SENSOR_ID 0xe0
/* The Electric Air Module message. */
struct eam_module_msg {
uint8_t start; /**< Start byte */
uint8_t eam_sensor_id; /**< EAM sensor ID */
uint8_t warning;
uint8_t sensor_id; /**< Sensor ID, why different? */
uint8_t alarm_inverse1;
uint8_t alarm_inverse2;
uint8_t cell1_L; /**< Lipo cell voltages. Not supported. */
uint8_t cell2_L;
uint8_t cell3_L;
uint8_t cell4_L;
uint8_t cell5_L;
uint8_t cell6_L;
uint8_t cell7_L;
uint8_t cell1_H;
uint8_t cell2_H;
uint8_t cell3_H;
uint8_t cell4_H;
uint8_t cell5_H;
uint8_t cell6_H;
uint8_t cell7_H;
uint8_t batt1_voltage_L; /**< Battery 1 voltage, lower 8-bits in steps of 0.02V */
uint8_t batt1_voltage_H;
uint8_t batt2_voltage_L; /**< Battery 2 voltage, lower 8-bits in steps of 0.02V */
uint8_t batt2_voltage_H;
uint8_t temperature1; /**< Temperature sensor 1. 20 = 0 degrees */
uint8_t temperature2;
uint8_t altitude_L; /**< Attitude (meters) lower 8-bits. 500 = 0 meters */
uint8_t altitude_H;
uint8_t current_L; /**< Current (mAh) lower 8-bits in steps of 0.1V */
uint8_t current_H;
uint8_t main_voltage_L; /**< Main power voltage lower 8-bits in steps of 0.1V */
uint8_t main_voltage_H;
uint8_t battery_capacity_L; /**< Used battery capacity in steps of 10mAh */
uint8_t battery_capacity_H;
uint8_t climbrate_L; /**< Climb rate in 0.01m/s. 0m/s = 30000 */
uint8_t climbrate_H;
uint8_t climbrate_3s; /**< Climb rate in m/3sec. 0m/3sec = 120 */
uint8_t rpm_L; /**< RPM Lower 8-bits In steps of 10 U/min */
uint8_t rpm_H;
uint8_t electric_min; /**< Flight time in minutes. */
uint8_t electric_sec; /**< Flight time in seconds. */
uint8_t speed_L; /**< Airspeed in km/h in steps of 1 km/h */
uint8_t speed_H;
uint8_t stop; /**< Stop byte */
uint8_t checksum; /**< Lower 8-bits of all bytes summed. */
};
void messages_init(void);
void build_eam_response(uint8_t *buffer, int *size);
#endif /* MESSAGES_H_ */

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/****************************************************************************
*
* Copyright (C) 2012 PX4 Development Team. All rights reserved.
* Author: @author Simon Wilks <sjwilks@gmail.com>
*
* 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 PX4 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.
*
****************************************************************************/
/**
* @file test_hott_telemetry.c
*
* Tests the Graupner HoTT telemetry support.
*
*/
/****************************************************************************
* Included Files
****************************************************************************/
#include <drivers/drv_gpio.h>
#include <nuttx/config.h>
#include <sys/types.h>
#include <debug.h>
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
#include "tests.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
static int open_uart(const char *device)
{
/* baud rate */
int speed = B19200;
/* open uart */
int uart = open(device, O_RDWR | O_NOCTTY);
if (uart < 0) {
errx(1, "FAIL: Error opening port");
return ERROR;
}
/* Try to set baud rate */
struct termios uart_config;
/* Fill the struct for the new configuration */
tcgetattr(uart, &uart_config);
/* Clear ONLCR flag (which appends a CR for every LF) */
uart_config.c_oflag &= ~ONLCR;
/* Set baud rate */
if (cfsetispeed(&uart_config, speed) < 0 || cfsetospeed(&uart_config, speed) < 0) {
errx(1, "FAIL: Error setting baudrate / termios config for cfsetispeed, cfsetospeed");
return ERROR;
}
if (tcsetattr(uart, TCSANOW, &uart_config) < 0) {
errx(1, "FAIL: Error setting baudrate / termios config for tcsetattr");
return ERROR;
}
return uart;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: test_hott_telemetry
****************************************************************************/
int test_hott_telemetry(int argc, char *argv[])
{
warnx("HoTT Telemetry Test Requirements:");
warnx("- Radio on and Electric Air. Mod on (telemetry -> sensor select).");
warnx("- Receiver telemetry port must be in telemetry mode.");
warnx("- Connect telemetry wire to /dev/ttyS1 (USART2).");
warnx("Testing...");
const char device[] = "/dev/ttyS1";
int fd = open_uart(device);
if (fd < 0) {
close(fd);
return ERROR;
}
/* Activate single wire mode */
ioctl(fd, TIOCSSINGLEWIRE, SER_SINGLEWIRE_ENABLED);
char send = 'a';
write(fd, &send, 1);
/* Since TX and RX are now connected we should be able to read in what we wrote */
const int timeout = 1000;
struct pollfd fds[] = { { .fd = fd, .events = POLLIN } };
if (poll(fds, 1, timeout) == 0) {
errx(1, "FAIL: Could not read sent data.");
}
char receive;
read(fd, &receive, 1);
warnx("PASS: Single wire enabled. Sent %x and received %x", send, receive);
/* Attempt to read HoTT poll messages from the HoTT receiver */
int received_count = 0;
int valid_count = 0;
const int max_polls = 5;
uint8_t byte;
for (; received_count < 5; received_count++) {
if (poll(fds, 1, timeout) == 0) {
errx(1, "FAIL: Could not read sent data. Is your HoTT receiver plugged in on %s?", device);
break;
} else {
read(fd, &byte, 1);
if (byte == 0x80) {
valid_count++;
}
/* Read the device ID being polled */
read(fd, &byte, 1);
}
}
if (received_count > 0 && valid_count > 0) {
if (received_count == max_polls && valid_count == max_polls) {
warnx("PASS: Received %d out of %d valid byte pairs from the HoTT receiver device.", received_count, max_polls);
} else {
warnx("WARN: Received %d out of %d byte pairs of which %d were valid from the HoTT receiver device.", received_count, max_polls, valid_count);
}
} else {
/* Let's work out what went wrong */
if (received_count == 0) {
errx(1, "FAIL: Could not read any polls from HoTT receiver device.");
}
if (valid_count == 0) {
errx(1, "FAIL: Received unexpected values from the HoTT receiver device.");
}
}
/* Attempt to send a HoTT response messages */
uint8_t response[] = {0x7c, 0x8e, 0x00, 0xe0, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf4, 0x01, 0x00, 0x00, \
0x19, 0x00, 0x00, 0x00, 0x30, 0x75, 0x78, 0x00, 0x00, 0x00, \
0x00, 0x00, 0x00, 0x7d, 0x12
};
usleep(5000);
for (unsigned int i = 0; i < sizeof(response); i++) {
write(fd, &response[i], 1);
usleep(1000);
}
warnx("PASS: Response sent to the HoTT receiver device. Voltage should now show 2.5V.");
/* Disable single wire */
ioctl(fd, TIOCSSINGLEWIRE, ~SER_SINGLEWIRE_ENABLED);
write(fd, &send, 1);
/* We should timeout as there will be nothing to read (TX and RX no longer connected) */
if (poll(fds, 1, timeout) == 0) {
errx(1, "FAIL: timeout expected.");
}
warnx("PASS: Single wire disabled.");
close(fd);
exit(0);
}

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@ -93,6 +93,7 @@ extern int test_uart_send(int argc, char *argv[]);
extern int test_sleep(int argc, char *argv[]);
extern int test_time(int argc, char *argv[]);
extern int test_uart_console(int argc, char *argv[]);
extern int test_hott_telemetry(int argc, char *argv[]);
extern int test_jig_voltages(int argc, char *argv[]);
extern int test_param(int argc, char *argv[]);
extern int test_bson(int argc, char *argv[]);

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@ -100,6 +100,7 @@ const struct {
{"uart_baudchange", test_uart_baudchange, OPT_NOJIGTEST | OPT_NOALLTEST},
{"uart_send", test_uart_send, OPT_NOJIGTEST | OPT_NOALLTEST},
{"uart_console", test_uart_console, OPT_NOJIGTEST | OPT_NOALLTEST},
{"hott_telemetry", test_hott_telemetry, OPT_NOJIGTEST | OPT_NOALLTEST},
{"tone", test_tone, 0},
{"sleep", test_sleep, OPT_NOJIGTEST},
{"time", test_time, OPT_NOJIGTEST},

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@ -92,6 +92,7 @@ CONFIGURED_APPS += fixedwing_att_control
CONFIGURED_APPS += fixedwing_pos_control
CONFIGURED_APPS += position_estimator
CONFIGURED_APPS += attitude_estimator_ekf
CONFIGURED_APPS += hott_telemetry
# Hacking tools
#CONFIGURED_APPS += system/i2c

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@ -200,6 +200,12 @@ CONFIG_STM32_TIM9=y
CONFIG_STM32_TIM10=y
CONFIG_STM32_TIM11=y
#
# Enable single wire support. If this is not defined, then this mode cannot
# be enabled.
#
CONFIG_STM32_USART_SINGLEWIRE=y
#
# We want the flash prefetch on for max performance.
#