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Merge pull request #721 from PX4/laser_rangefinder 

Laser rangefinder
This commit is contained in:
Lorenz Meier 2014-03-12 21:54:34 +01:00
parent 9153eee235 4840d5fbcb
commit 82e2619f1f
5 changed files with 1172 additions and 104 deletions
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1
makefiles/config_px4fmu-v2_default.mk
View File

@ -27,6 +27,7 @@ MODULES += drivers/l3gd20
MODULES += drivers/hmc5883
MODULES += drivers/ms5611
MODULES += drivers/mb12xx
MODULES += drivers/sf0x
MODULES += drivers/gps
MODULES += drivers/hil
MODULES += drivers/hott/hott_telemetry

244
src/drivers/mb12xx/mb12xx.cpp
View File

@ -37,7 +37,7 @@
*
* Driver for the Maxbotix sonar range finders connected via I2C.
*/
#include <nuttx/config.h>
#include <drivers/device/i2c.h>
@ -84,7 +84,7 @@
/* Device limits */
#define MB12XX_MIN_DISTANCE (0.20f)
#define MB12XX_MAX_DISTANCE (7.65f)
#define MB12XX_CONVERSION_INTERVAL 60000 /* 60ms */
/* oddly, ERROR is not defined for c++ */
@ -102,17 +102,17 @@ class MB12XX : public device::I2C
public:
MB12XX(int bus = MB12XX_BUS, int address = MB12XX_BASEADDR);
virtual ~MB12XX();
virtual int init();
virtual ssize_t read(struct file *filp, char *buffer, size_t buflen);
virtual int ioctl(struct file *filp, int cmd, unsigned long arg);
/**
* Diagnostics - print some basic information about the driver.
*/
void print_info();
protected:
virtual int probe();
@ -124,13 +124,13 @@ private:
bool _sensor_ok;
int _measure_ticks;
bool _collect_phase;
orb_advert_t _range_finder_topic;
perf_counter_t _sample_perf;
perf_counter_t _comms_errors;
perf_counter_t _buffer_overflows;
/**
* Test whether the device supported by the driver is present at a
* specific address.
@ -139,7 +139,7 @@ private:
* @return True if the device is present.
*/
int probe_address(uint8_t address);
/**
* Initialise the automatic measurement state machine and start it.
*
@ -147,12 +147,12 @@ private:
* to make it more aggressive about resetting the bus in case of errors.
*/
void start();
/**
* Stop the automatic measurement state machine.
*/
void stop();
/**
* Set the min and max distance thresholds if you want the end points of the sensors
* range to be brought in at all, otherwise it will use the defaults MB12XX_MIN_DISTANCE
@ -162,7 +162,7 @@ private:
void set_maximum_distance(float max);
float get_minimum_distance();
float get_maximum_distance();
/**
* Perform a poll cycle; collect from the previous measurement
* and start a new one.
@ -177,8 +177,8 @@ private:
* @param arg Instance pointer for the driver that is polling.
*/
static void cycle_trampoline(void *arg);
};
/*
@ -200,8 +200,8 @@ MB12XX::MB12XX(int bus, int address) :
_buffer_overflows(perf_alloc(PC_COUNT, "mb12xx_buffer_overflows"))
{
// enable debug() calls
_debug_enabled = true;
_debug_enabled = false;
// work_cancel in the dtor will explode if we don't do this...
memset(&_work, 0, sizeof(_work));
}
@ -212,8 +212,9 @@ MB12XX::~MB12XX()
stop();
/* free any existing reports */
if (_reports != nullptr)
if (_reports != nullptr) {
delete _reports;
}
}
int
@ -222,22 +223,25 @@ MB12XX::init()
int ret = ERROR;
/* do I2C init (and probe) first */
if (I2C::init() != OK)
if (I2C::init() != OK) {
goto out;
}
/* allocate basic report buffers */
_reports = new RingBuffer(2, sizeof(range_finder_report));
if (_reports == nullptr)
if (_reports == nullptr) {
goto out;
}
/* get a publish handle on the range finder topic */
struct range_finder_report zero_report;
memset(&zero_report, 0, sizeof(zero_report));
_range_finder_topic = orb_advertise(ORB_ID(sensor_range_finder), &zero_report);
if (_range_finder_topic < 0)
if (_range_finder_topic < 0) {
debug("failed to create sensor_range_finder object. Did you start uOrb?");
}
ret = OK;
/* sensor is ok, but we don't really know if it is within range */
@ -256,13 +260,13 @@ void
MB12XX::set_minimum_distance(float min)
{
_min_distance = min;
}
}
void
MB12XX::set_maximum_distance(float max)
{
_max_distance = max;
}
}
float
MB12XX::get_minimum_distance()
@ -284,20 +288,20 @@ MB12XX::ioctl(struct file *filp, int cmd, unsigned long arg)
case SENSORIOCSPOLLRATE: {
switch (arg) {
/* switching to manual polling */
/* switching to manual polling */
case SENSOR_POLLRATE_MANUAL:
stop();
_measure_ticks = 0;
return OK;
/* external signalling (DRDY) not supported */
/* external signalling (DRDY) not supported */
case SENSOR_POLLRATE_EXTERNAL:
/* zero would be bad */
/* zero would be bad */
case 0:
return -EINVAL;
/* set default/max polling rate */
/* set default/max polling rate */
case SENSOR_POLLRATE_MAX:
case SENSOR_POLLRATE_DEFAULT: {
/* do we need to start internal polling? */
@ -307,13 +311,14 @@ MB12XX::ioctl(struct file *filp, int cmd, unsigned long arg)
_measure_ticks = USEC2TICK(MB12XX_CONVERSION_INTERVAL);
/* if we need to start the poll state machine, do it */
if (want_start)
if (want_start) {
start();
}
return OK;
}
/* adjust to a legal polling interval in Hz */
/* adjust to a legal polling interval in Hz */
default: {
/* do we need to start internal polling? */
bool want_start = (_measure_ticks == 0);
@ -322,15 +327,17 @@ MB12XX::ioctl(struct file *filp, int cmd, unsigned long arg)
unsigned ticks = USEC2TICK(1000000 / arg);
/* check against maximum rate */
if (ticks < USEC2TICK(MB12XX_CONVERSION_INTERVAL))
if (ticks < USEC2TICK(MB12XX_CONVERSION_INTERVAL)) {
return -EINVAL;
}
/* update interval for next measurement */
_measure_ticks = ticks;
/* if we need to start the poll state machine, do it */
if (want_start)
if (want_start) {
start();
}
return OK;
}
@ -338,45 +345,49 @@ MB12XX::ioctl(struct file *filp, int cmd, unsigned long arg)
}
case SENSORIOCGPOLLRATE:
if (_measure_ticks == 0)
if (_measure_ticks == 0) {
return SENSOR_POLLRATE_MANUAL;
}
return (1000 / _measure_ticks);
case SENSORIOCSQUEUEDEPTH: {
/* lower bound is mandatory, upper bound is a sanity check */
if ((arg < 1) || (arg > 100))
return -EINVAL;
irqstate_t flags = irqsave();
if (!_reports->resize(arg)) {
/* lower bound is mandatory, upper bound is a sanity check */
if ((arg < 1) || (arg > 100)) {
return -EINVAL;
}
irqstate_t flags = irqsave();
if (!_reports->resize(arg)) {
irqrestore(flags);
return -ENOMEM;
}
irqrestore(flags);
return -ENOMEM;
return OK;
}
irqrestore(flags);
return OK;
}
case SENSORIOCGQUEUEDEPTH:
return _reports->size();
case SENSORIOCRESET:
/* XXX implement this */
return -EINVAL;
case RANGEFINDERIOCSETMINIUMDISTANCE:
{
set_minimum_distance(*(float *)arg);
return 0;
}
break;
case RANGEFINDERIOCSETMAXIUMDISTANCE:
{
set_maximum_distance(*(float *)arg);
return 0;
}
break;
case RANGEFINDERIOCSETMINIUMDISTANCE: {
set_minimum_distance(*(float *)arg);
return 0;
}
break;
case RANGEFINDERIOCSETMAXIUMDISTANCE: {
set_maximum_distance(*(float *)arg);
return 0;
}
break;
default:
/* give it to the superclass */
return I2C::ioctl(filp, cmd, arg);
@ -391,8 +402,9 @@ MB12XX::read(struct file *filp, char *buffer, size_t buflen)
int ret = 0;
/* buffer must be large enough */
if (count < 1)
if (count < 1) {
return -ENOSPC;
}
/* if automatic measurement is enabled */
if (_measure_ticks > 0) {
@ -453,14 +465,14 @@ MB12XX::measure()
uint8_t cmd = MB12XX_TAKE_RANGE_REG;
ret = transfer(&cmd, 1, nullptr, 0);
if (OK != ret)
{
if (OK != ret) {
perf_count(_comms_errors);
log("i2c::transfer returned %d", ret);
return ret;
}
ret = OK;
return ret;
}
@ -468,32 +480,31 @@ int
MB12XX::collect()
{
int ret = -EIO;
/* read from the sensor */
uint8_t val[2] = {0, 0};
perf_begin(_sample_perf);
ret = transfer(nullptr, 0, &val[0], 2);
if (ret < 0)
{
if (ret < 0) {
log("error reading from sensor: %d", ret);
perf_count(_comms_errors);
perf_end(_sample_perf);
return ret;
}
uint16_t distance = val[0] << 8 | val[1];
float si_units = (distance * 1.0f)/ 100.0f; /* cm to m */
float si_units = (distance * 1.0f) / 100.0f; /* cm to m */
struct range_finder_report report;
/* this should be fairly close to the end of the measurement, so the best approximation of the time */
report.timestamp = hrt_absolute_time();
report.error_count = perf_event_count(_comms_errors);
report.error_count = perf_event_count(_comms_errors);
report.distance = si_units;
report.valid = si_units > get_minimum_distance() && si_units < get_maximum_distance() ? 1 : 0;
/* publish it */
orb_publish(ORB_ID(sensor_range_finder), _range_finder_topic, &report);
@ -519,17 +530,19 @@ MB12XX::start()
/* schedule a cycle to start things */
work_queue(HPWORK, &_work, (worker_t)&MB12XX::cycle_trampoline, this, 1);
/* notify about state change */
struct subsystem_info_s info = {
true,
true,
true,
SUBSYSTEM_TYPE_RANGEFINDER};
SUBSYSTEM_TYPE_RANGEFINDER
};
static orb_advert_t pub = -1;
if (pub > 0) {
orb_publish(ORB_ID(subsystem_info), pub, &info);
} else {
pub = orb_advertise(ORB_ID(subsystem_info), &info);
}
@ -583,8 +596,9 @@ MB12XX::cycle()
}
/* measurement phase */
if (OK != measure())
if (OK != measure()) {
log("measure error");
}
/* next phase is collection */
_collect_phase = true;
@ -635,33 +649,37 @@ start()
{
int fd;
if (g_dev != nullptr)
if (g_dev != nullptr) {
errx(1, "already started");
}
/* create the driver */
g_dev = new MB12XX(MB12XX_BUS);
if (g_dev == nullptr)
if (g_dev == nullptr) {
goto fail;
}
if (OK != g_dev->init())
if (OK != g_dev->init()) {
goto fail;
}
/* set the poll rate to default, starts automatic data collection */
fd = open(RANGE_FINDER_DEVICE_PATH, O_RDONLY);
if (fd < 0)
if (fd < 0) {
goto fail;
}
if (ioctl(fd, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_DEFAULT) < 0)
if (ioctl(fd, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_DEFAULT) < 0) {
goto fail;
}
exit(0);
fail:
if (g_dev != nullptr)
{
if (g_dev != nullptr) {
delete g_dev;
g_dev = nullptr;
}
@ -674,15 +692,14 @@ fail:
*/
void stop()
{
if (g_dev != nullptr)
{
if (g_dev != nullptr) {
delete g_dev;
g_dev = nullptr;
}
else
{
} else {
errx(1, "driver not running");
}
exit(0);
}
@ -700,22 +717,25 @@ test()
int fd = open(RANGE_FINDER_DEVICE_PATH, O_RDONLY);
if (fd < 0)
if (fd < 0) {
err(1, "%s open failed (try 'mb12xx start' if the driver is not running", RANGE_FINDER_DEVICE_PATH);
}
/* do a simple demand read */
sz = read(fd, &report, sizeof(report));
if (sz != sizeof(report))
if (sz != sizeof(report)) {
err(1, "immediate read failed");
}
warnx("single read");
warnx("measurement: %0.2f m", (double)report.distance);
warnx("time: %lld", report.timestamp);
/* start the sensor polling at 2Hz */
if (OK != ioctl(fd, SENSORIOCSPOLLRATE, 2))
if (OK != ioctl(fd, SENSORIOCSPOLLRATE, 2)) {
errx(1, "failed to set 2Hz poll rate");
}
/* read the sensor 5x and report each value */
for (unsigned i = 0; i < 5; i++) {
@ -726,20 +746,27 @@ test()
fds.events = POLLIN;
ret = poll(&fds, 1, 2000);
if (ret != 1)
if (ret != 1) {
errx(1, "timed out waiting for sensor data");
}
/* now go get it */
sz = read(fd, &report, sizeof(report));
if (sz != sizeof(report))
if (sz != sizeof(report)) {
err(1, "periodic read failed");
}
warnx("periodic read %u", i);
warnx("measurement: %0.3f", (double)report.distance);
warnx("time: %lld", report.timestamp);
}
/* reset the sensor polling to default rate */
if (OK != ioctl(fd, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_DEFAULT)) {
errx(1, "failed to set default poll rate");
}
errx(0, "PASS");
}
@ -751,14 +778,17 @@ reset()
{
int fd = open(RANGE_FINDER_DEVICE_PATH, O_RDONLY);
if (fd < 0)
if (fd < 0) {
err(1, "failed ");
}
if (ioctl(fd, SENSORIOCRESET, 0) < 0)
if (ioctl(fd, SENSORIOCRESET, 0) < 0) {
err(1, "driver reset failed");
}
if (ioctl(fd, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_DEFAULT) < 0)
if (ioctl(fd, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_DEFAULT) < 0) {
err(1, "driver poll restart failed");
}
exit(0);
}
@ -769,8 +799,9 @@ reset()
void
info()
{
if (g_dev == nullptr)
if (g_dev == nullptr) {
errx(1, "driver not running");
}
printf("state @ %p\n", g_dev);
g_dev->print_info();
@ -786,32 +817,37 @@ mb12xx_main(int argc, char *argv[])
/*
* Start/load the driver.
*/
if (!strcmp(argv[1], "start"))
if (!strcmp(argv[1], "start")) {
mb12xx::start();
/*
* Stop the driver
*/
if (!strcmp(argv[1], "stop"))
mb12xx::stop();
}
/*
* Stop the driver
*/
if (!strcmp(argv[1], "stop")) {
mb12xx::stop();
}
/*
* Test the driver/device.
*/
if (!strcmp(argv[1], "test"))
if (!strcmp(argv[1], "test")) {
mb12xx::test();
}
/*
* Reset the driver.
*/
if (!strcmp(argv[1], "reset"))
if (!strcmp(argv[1], "reset")) {
mb12xx::reset();
}
/*
* Print driver information.
*/
if (!strcmp(argv[1], "info") || !strcmp(argv[1], "status"))
if (!strcmp(argv[1], "info") || !strcmp(argv[1], "status")) {
mb12xx::info();
}
errx(1, "unrecognized command, try 'start', 'test', 'reset' or 'info'");
}

40
src/drivers/sf0x/module.mk Normal file
View File

@ -0,0 +1,40 @@
############################################################################
#
# Copyright (c) 2014 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.
#
############################################################################
#
# Makefile to build the Lightware laser range finder driver.
#
MODULE_COMMAND = sf0x
SRCS = sf0x.cpp

977
src/drivers/sf0x/sf0x.cpp Normal file
View File

@ -0,0 +1,977 @@
/****************************************************************************
*
* Copyright (c) 2014 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.
*
****************************************************************************/
/**
* @file sf0x.cpp
* @author Lorenz Meier <lm@inf.ethz.ch>
* @author Greg Hulands
*
* Driver for the Lightware SF0x laser rangefinder series
*/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
#include <semaphore.h>
#include <string.h>
#include <fcntl.h>
#include <poll.h>
#include <errno.h>
#include <stdio.h>
#include <math.h>
#include <unistd.h>
#include <termios.h>
#include <nuttx/arch.h>
#include <nuttx/wqueue.h>
#include <nuttx/clock.h>
#include <systemlib/perf_counter.h>
#include <systemlib/err.h>
#include <drivers/drv_hrt.h>
#include <drivers/drv_range_finder.h>
#include <drivers/device/device.h>
#include <drivers/device/ringbuffer.h>
#include <uORB/uORB.h>
#include <uORB/topics/subsystem_info.h>
#include <board_config.h>
/* Configuration Constants */
/* oddly, ERROR is not defined for c++ */
#ifdef ERROR
# undef ERROR
#endif
static const int ERROR = -1;
#ifndef CONFIG_SCHED_WORKQUEUE
# error This requires CONFIG_SCHED_WORKQUEUE.
#endif
#define SF0X_CONVERSION_INTERVAL 83334
#define SF0X_TAKE_RANGE_REG 'd'
#define SF02F_MIN_DISTANCE 0.0f
#define SF02F_MAX_DISTANCE 40.0f
#define SF0X_DEFAULT_PORT "/dev/ttyS2"
class SF0X : public device::CDev
{
public:
SF0X(const char *port = SF0X_DEFAULT_PORT);
virtual ~SF0X();
virtual int init();
virtual ssize_t read(struct file *filp, char *buffer, size_t buflen);
virtual int ioctl(struct file *filp, int cmd, unsigned long arg);
/**
* Diagnostics - print some basic information about the driver.
*/
void print_info();
protected:
virtual int probe();
private:
float _min_distance;
float _max_distance;
work_s _work;
RingBuffer *_reports;
bool _sensor_ok;
int _measure_ticks;
bool _collect_phase;
int _fd;
char _linebuf[10];
unsigned _linebuf_index;
hrt_abstime _last_read;
orb_advert_t _range_finder_topic;
perf_counter_t _sample_perf;
perf_counter_t _comms_errors;
perf_counter_t _buffer_overflows;
/**
* Initialise the automatic measurement state machine and start it.
*
* @note This function is called at open and error time. It might make sense
* to make it more aggressive about resetting the bus in case of errors.
*/
void start();
/**
* Stop the automatic measurement state machine.
*/
void stop();
/**
* Set the min and max distance thresholds if you want the end points of the sensors
* range to be brought in at all, otherwise it will use the defaults SF0X_MIN_DISTANCE
* and SF0X_MAX_DISTANCE
*/
void set_minimum_distance(float min);
void set_maximum_distance(float max);
float get_minimum_distance();
float get_maximum_distance();
/**
* Perform a poll cycle; collect from the previous measurement
* and start a new one.
*/
void cycle();
int measure();
int collect();
/**
* Static trampoline from the workq context; because we don't have a
* generic workq wrapper yet.
*
* @param arg Instance pointer for the driver that is polling.
*/
static void cycle_trampoline(void *arg);
};
/*
* Driver 'main' command.
*/
extern "C" __EXPORT int sf0x_main(int argc, char *argv[]);
SF0X::SF0X(const char *port) :
CDev("SF0X", RANGE_FINDER_DEVICE_PATH),
_min_distance(SF02F_MIN_DISTANCE),
_max_distance(SF02F_MAX_DISTANCE),
_reports(nullptr),
_sensor_ok(false),
_measure_ticks(0),
_collect_phase(false),
_fd(-1),
_linebuf_index(0),
_last_read(0),
_range_finder_topic(-1),
_sample_perf(perf_alloc(PC_ELAPSED, "sf0x_read")),
_comms_errors(perf_alloc(PC_COUNT, "sf0x_comms_errors")),
_buffer_overflows(perf_alloc(PC_COUNT, "sf0x_buffer_overflows"))
{
/* open fd */
_fd = ::open(port, O_RDWR | O_NOCTTY | O_NONBLOCK);
if (_fd < 0) {
warnx("FAIL: laser fd");
}
/* tell it to stop auto-triggering */
char stop_auto = ' ';
(void)::write(_fd, &stop_auto, 1);
usleep(100);
(void)::write(_fd, &stop_auto, 1);
struct termios uart_config;
int termios_state;
/* fill the struct for the new configuration */
tcgetattr(_fd, &uart_config);
/* clear ONLCR flag (which appends a CR for every LF) */
uart_config.c_oflag &= ~ONLCR;
/* no parity, one stop bit */
uart_config.c_cflag &= ~(CSTOPB | PARENB);
unsigned speed = B9600;
/* set baud rate */
if ((termios_state = cfsetispeed(&uart_config, speed)) < 0) {
warnx("ERR CFG: %d ISPD", termios_state);
}
if ((termios_state = cfsetospeed(&uart_config, speed)) < 0) {
warnx("ERR CFG: %d OSPD\n", termios_state);
}
if ((termios_state = tcsetattr(_fd, TCSANOW, &uart_config)) < 0) {
warnx("ERR baud %d ATTR", termios_state);
}
// disable debug() calls
_debug_enabled = false;
// work_cancel in the dtor will explode if we don't do this...
memset(&_work, 0, sizeof(_work));
}
SF0X::~SF0X()
{
/* make sure we are truly inactive */
stop();
/* free any existing reports */
if (_reports != nullptr) {
delete _reports;
}
}
int
SF0X::init()
{
int ret = ERROR;
unsigned i = 0;
/* do regular cdev init */
if (CDev::init() != OK) {
goto out;
}
/* allocate basic report buffers */
_reports = new RingBuffer(2, sizeof(range_finder_report));
if (_reports == nullptr) {
warnx("mem err");
goto out;
}
/* get a publish handle on the range finder topic */
struct range_finder_report zero_report;
memset(&zero_report, 0, sizeof(zero_report));
_range_finder_topic = orb_advertise(ORB_ID(sensor_range_finder), &zero_report);
if (_range_finder_topic < 0) {
warnx("advert err");
}
/* attempt to get a measurement 5 times */
while (ret != OK && i < 5) {
if (measure()) {
ret = ERROR;
_sensor_ok = false;
}
usleep(100000);
if (collect()) {
ret = ERROR;
_sensor_ok = false;
} else {
ret = OK;
/* sensor is ok, but we don't really know if it is within range */
_sensor_ok = true;
}
i++;
}
/* close the fd */
::close(_fd);
_fd = -1;
out:
return ret;
}
int
SF0X::probe()
{
return measure();
}
void
SF0X::set_minimum_distance(float min)
{
_min_distance = min;
}
void
SF0X::set_maximum_distance(float max)
{
_max_distance = max;
}
float
SF0X::get_minimum_distance()
{
return _min_distance;
}
float
SF0X::get_maximum_distance()
{
return _max_distance;
}
int
SF0X::ioctl(struct file *filp, int cmd, unsigned long arg)
{
switch (cmd) {
case SENSORIOCSPOLLRATE: {
switch (arg) {
/* switching to manual polling */
case SENSOR_POLLRATE_MANUAL:
stop();
_measure_ticks = 0;
return OK;
/* external signalling (DRDY) not supported */
case SENSOR_POLLRATE_EXTERNAL:
/* zero would be bad */
case 0:
return -EINVAL;
/* set default/max polling rate */
case SENSOR_POLLRATE_MAX:
case SENSOR_POLLRATE_DEFAULT: {
/* do we need to start internal polling? */
bool want_start = (_measure_ticks == 0);
/* set interval for next measurement to minimum legal value */
_measure_ticks = USEC2TICK(SF0X_CONVERSION_INTERVAL);
/* if we need to start the poll state machine, do it */
if (want_start) {
start();
}
return OK;
}
/* adjust to a legal polling interval in Hz */
default: {
/* do we need to start internal polling? */
bool want_start = (_measure_ticks == 0);
/* convert hz to tick interval via microseconds */
unsigned ticks = USEC2TICK(1000000 / arg);
/* check against maximum rate */
if (ticks < USEC2TICK(SF0X_CONVERSION_INTERVAL)) {
return -EINVAL;
}
/* update interval for next measurement */
_measure_ticks = ticks;
/* if we need to start the poll state machine, do it */
if (want_start) {
start();
}
return OK;
}
}
}
case SENSORIOCGPOLLRATE:
if (_measure_ticks == 0) {
return SENSOR_POLLRATE_MANUAL;
}
return (1000 / _measure_ticks);
case SENSORIOCSQUEUEDEPTH: {
/* lower bound is mandatory, upper bound is a sanity check */
if ((arg < 1) || (arg > 100)) {
return -EINVAL;
}
irqstate_t flags = irqsave();
if (!_reports->resize(arg)) {
irqrestore(flags);
return -ENOMEM;
}
irqrestore(flags);
return OK;
}
case SENSORIOCGQUEUEDEPTH:
return _reports->size();
case SENSORIOCRESET:
/* XXX implement this */
return -EINVAL;
case RANGEFINDERIOCSETMINIUMDISTANCE: {
set_minimum_distance(*(float *)arg);
return 0;
}
break;
case RANGEFINDERIOCSETMAXIUMDISTANCE: {
set_maximum_distance(*(float *)arg);
return 0;
}
break;
default:
/* give it to the superclass */
return CDev::ioctl(filp, cmd, arg);
}
}
ssize_t
SF0X::read(struct file *filp, char *buffer, size_t buflen)
{
unsigned count = buflen / sizeof(struct range_finder_report);
struct range_finder_report *rbuf = reinterpret_cast<struct range_finder_report *>(buffer);
int ret = 0;
/* buffer must be large enough */
if (count < 1) {
return -ENOSPC;
}
/* if automatic measurement is enabled */
if (_measure_ticks > 0) {
/*
* While there is space in the caller's buffer, and reports, copy them.
* Note that we may be pre-empted by the workq thread while we are doing this;
* we are careful to avoid racing with them.
*/
while (count--) {
if (_reports->get(rbuf)) {
ret += sizeof(*rbuf);
rbuf++;
}
}
/* if there was no data, warn the caller */
return ret ? ret : -EAGAIN;
}
/* manual measurement - run one conversion */
do {
_reports->flush();
/* trigger a measurement */
if (OK != measure()) {
ret = -EIO;
break;
}
/* wait for it to complete */
usleep(SF0X_CONVERSION_INTERVAL);
/* run the collection phase */
if (OK != collect()) {
ret = -EIO;
break;
}
/* state machine will have generated a report, copy it out */
if (_reports->get(rbuf)) {
ret = sizeof(*rbuf);
}
} while (0);
return ret;
}
int
SF0X::measure()
{
int ret;
/*
* Send the command to begin a measurement.
*/
char cmd = SF0X_TAKE_RANGE_REG;
ret = ::write(_fd, &cmd, 1);
if (ret != sizeof(cmd)) {
perf_count(_comms_errors);
log("write fail %d", ret);
return ret;
}
ret = OK;
return ret;
}
int
SF0X::collect()
{
int ret;
perf_begin(_sample_perf);
/* clear buffer if last read was too long ago */
uint64_t read_elapsed = hrt_elapsed_time(&_last_read);
if (read_elapsed > (SF0X_CONVERSION_INTERVAL * 2)) {
_linebuf_index = 0;
}
/* read from the sensor (uart buffer) */
ret = ::read(_fd, &_linebuf[_linebuf_index], sizeof(_linebuf) - _linebuf_index);
if (ret < 0) {
_linebuf[sizeof(_linebuf) - 1] = '\0';
debug("read err: %d lbi: %d buf: %s", ret, (int)_linebuf_index, _linebuf);
perf_count(_comms_errors);
perf_end(_sample_perf);
/* only throw an error if we time out */
if (read_elapsed > (SF0X_CONVERSION_INTERVAL * 2)) {
return ret;
} else {
return -EAGAIN;
}
}
_linebuf_index += ret;
if (_linebuf_index >= sizeof(_linebuf)) {
_linebuf_index = 0;
}
_last_read = hrt_absolute_time();
if (_linebuf[_linebuf_index - 2] != '\r' || _linebuf[_linebuf_index - 1] != '\n') {
/* incomplete read, reschedule ourselves */
return -EAGAIN;
}
char *end;
float si_units;
bool valid;
/* enforce line ending */
_linebuf[sizeof(_linebuf) - 1] = '\0';
if (_linebuf[0] == '-' && _linebuf[1] == '-' && _linebuf[2] == '.') {
si_units = -1.0f;
valid = false;
} else {
si_units = strtod(_linebuf, &end);
valid = true;
}
debug("val (float): %8.4f, raw: %s\n", si_units, _linebuf);
/* done with this chunk, resetting */
_linebuf_index = 0;
struct range_finder_report report;
/* this should be fairly close to the end of the measurement, so the best approximation of the time */
report.timestamp = hrt_absolute_time();
report.error_count = perf_event_count(_comms_errors);
report.distance = si_units;
report.valid = valid && (si_units > get_minimum_distance() && si_units < get_maximum_distance() ? 1 : 0);
/* publish it */
orb_publish(ORB_ID(sensor_range_finder), _range_finder_topic, &report);
if (_reports->force(&report)) {
perf_count(_buffer_overflows);
}
/* notify anyone waiting for data */
poll_notify(POLLIN);
ret = OK;
perf_end(_sample_perf);
return ret;
}
void
SF0X::start()
{
/* reset the report ring and state machine */
_collect_phase = false;
_reports->flush();
/* schedule a cycle to start things */
work_queue(HPWORK, &_work, (worker_t)&SF0X::cycle_trampoline, this, 1);
// /* notify about state change */
// struct subsystem_info_s info = {
// true,
// true,
// true,
// SUBSYSTEM_TYPE_RANGEFINDER
// };
// static orb_advert_t pub = -1;
// if (pub > 0) {
// orb_publish(ORB_ID(subsystem_info), pub, &info);
// } else {
// pub = orb_advertise(ORB_ID(subsystem_info), &info);
// }
}
void
SF0X::stop()
{
work_cancel(HPWORK, &_work);
}
void
SF0X::cycle_trampoline(void *arg)
{
SF0X *dev = static_cast<SF0X *>(arg);
dev->cycle();
}
void
SF0X::cycle()
{
/* fds initialized? */
if (_fd < 0) {
/* open fd */
_fd = ::open(SF0X_DEFAULT_PORT, O_RDWR | O_NOCTTY | O_NONBLOCK);
}
/* collection phase? */
if (_collect_phase) {
/* perform collection */
int collect_ret = collect();
if (collect_ret == -EAGAIN) {
/* reschedule to grab the missing bits, time to transmit 10 bytes @9600 bps */
work_queue(HPWORK,
&_work,
(worker_t)&SF0X::cycle_trampoline,
this,
USEC2TICK(1100));
return;
}
if (OK != collect_ret) {
log("collection error");
/* restart the measurement state machine */
start();
return;
}
/* next phase is measurement */
_collect_phase = false;
/*
* Is there a collect->measure gap?
*/
if (_measure_ticks > USEC2TICK(SF0X_CONVERSION_INTERVAL)) {
/* schedule a fresh cycle call when we are ready to measure again */
work_queue(HPWORK,
&_work,
(worker_t)&SF0X::cycle_trampoline,
this,
_measure_ticks - USEC2TICK(SF0X_CONVERSION_INTERVAL));
return;
}
}
/* measurement phase */
if (OK != measure()) {
log("measure error");
}
/* next phase is collection */
_collect_phase = true;
/* schedule a fresh cycle call when the measurement is done */
work_queue(HPWORK,
&_work,
(worker_t)&SF0X::cycle_trampoline,
this,
USEC2TICK(SF0X_CONVERSION_INTERVAL));
}
void
SF0X::print_info()
{
perf_print_counter(_sample_perf);
perf_print_counter(_comms_errors);
perf_print_counter(_buffer_overflows);
printf("poll interval: %d ticks\n", _measure_ticks);
_reports->print_info("report queue");
}
/**
* Local functions in support of the shell command.
*/
namespace sf0x
{
/* oddly, ERROR is not defined for c++ */
#ifdef ERROR
# undef ERROR
#endif
const int ERROR = -1;
SF0X *g_dev;
void start();
void stop();
void test();
void reset();
void info();
/**
* Start the driver.
*/
void
start(const char *port)
{
int fd;
if (g_dev != nullptr) {
errx(1, "already started");
}
/* create the driver */
g_dev = new SF0X(port);
if (g_dev == nullptr) {
goto fail;
}
if (OK != g_dev->init()) {
goto fail;
}
/* set the poll rate to default, starts automatic data collection */
fd = open(RANGE_FINDER_DEVICE_PATH, 0);
if (fd < 0) {
warnx("device open fail");
goto fail;
}
if (ioctl(fd, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_DEFAULT) < 0) {
goto fail;
}
exit(0);
fail:
if (g_dev != nullptr) {
delete g_dev;
g_dev = nullptr;
}
errx(1, "driver start failed");
}
/**
* Stop the driver
*/
void stop()
{
if (g_dev != nullptr) {
delete g_dev;
g_dev = nullptr;
} else {
errx(1, "driver not running");
}
exit(0);
}
/**
* Perform some basic functional tests on the driver;
* make sure we can collect data from the sensor in polled
* and automatic modes.
*/
void
test()
{
struct range_finder_report report;
ssize_t sz;
int fd = open(RANGE_FINDER_DEVICE_PATH, O_RDONLY);
if (fd < 0) {
err(1, "%s open failed (try 'sf0x start' if the driver is not running", RANGE_FINDER_DEVICE_PATH);
}
/* do a simple demand read */
sz = read(fd, &report, sizeof(report));
if (sz != sizeof(report)) {
err(1, "immediate read failed");
}
warnx("single read");
warnx("measurement: %0.2f m", (double)report.distance);
warnx("time: %lld", report.timestamp);
/* start the sensor polling at 2Hz */
if (OK != ioctl(fd, SENSORIOCSPOLLRATE, 2)) {
errx(1, "failed to set 2Hz poll rate");
}
/* read the sensor 5x and report each value */
for (unsigned i = 0; i < 5; i++) {
struct pollfd fds;
/* wait for data to be ready */
fds.fd = fd;
fds.events = POLLIN;
int ret = poll(&fds, 1, 2000);
if (ret != 1) {
errx(1, "timed out waiting for sensor data");
}
/* now go get it */
sz = read(fd, &report, sizeof(report));
if (sz != sizeof(report)) {
err(1, "periodic read failed");
}
warnx("periodic read %u", i);
warnx("measurement: %0.3f", (double)report.distance);
warnx("time: %lld", report.timestamp);
}
/* reset the sensor polling to default rate */
if (OK != ioctl(fd, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_DEFAULT)) {
errx(1, "failed to set default poll rate");
}
errx(0, "PASS");
}
/**
* Reset the driver.
*/
void
reset()
{
int fd = open(RANGE_FINDER_DEVICE_PATH, O_RDONLY);
if (fd < 0) {
err(1, "failed ");
}
if (ioctl(fd, SENSORIOCRESET, 0) < 0) {
err(1, "driver reset failed");
}
if (ioctl(fd, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_DEFAULT) < 0) {
err(1, "driver poll restart failed");
}
exit(0);
}
/**
* Print a little info about the driver.
*/
void
info()
{
if (g_dev == nullptr) {
errx(1, "driver not running");
}
printf("state @ %p\n", g_dev);
g_dev->print_info();
exit(0);
}
} // namespace
int
sf0x_main(int argc, char *argv[])
{
/*
* Start/load the driver.
*/
if (!strcmp(argv[1], "start")) {
if (argc > 2) {
sf0x::start(argv[2]);
} else {
sf0x::start(SF0X_DEFAULT_PORT);
}
}
/*
* Stop the driver
*/
if (!strcmp(argv[1], "stop")) {
sf0x::stop();
}
/*
* Test the driver/device.
*/
if (!strcmp(argv[1], "test")) {
sf0x::test();
}
/*
* Reset the driver.
*/
if (!strcmp(argv[1], "reset")) {
sf0x::reset();
}
/*
* Print driver information.
*/
if (!strcmp(argv[1], "info") || !strcmp(argv[1], "status")) {
sf0x::info();
}
errx(1, "unrecognized command, try 'start', 'test', 'reset' or 'info'");
}

14
src/modules/sdlog2/sdlog2.c
View File

@ -58,6 +58,8 @@
#include <drivers/drv_hrt.h>
#include <math.h>
#include <drivers/drv_range_finder.h>
#include <uORB/uORB.h>
#include <uORB/topics/vehicle_status.h>
#include <uORB/topics/sensor_combined.h>
@ -791,6 +793,7 @@ int sdlog2_thread_main(int argc, char *argv[])
struct vehicle_global_velocity_setpoint_s global_vel_sp;
struct battery_status_s battery;
struct telemetry_status_s telemetry;
struct range_finder_report range_finder;
} buf;
memset(&buf, 0, sizeof(buf));
@ -851,6 +854,7 @@ int sdlog2_thread_main(int argc, char *argv[])
int global_vel_sp_sub;
int battery_sub;
int telemetry_sub;
int range_finder_sub;
} subs;
subs.cmd_sub = orb_subscribe(ORB_ID(vehicle_command));
@ -874,6 +878,7 @@ int sdlog2_thread_main(int argc, char *argv[])
subs.global_vel_sp_sub = orb_subscribe(ORB_ID(vehicle_global_velocity_setpoint));
subs.battery_sub = orb_subscribe(ORB_ID(battery_status));
subs.telemetry_sub = orb_subscribe(ORB_ID(telemetry_status));
subs.range_finder_sub = orb_subscribe(ORB_ID(sensor_range_finder));
thread_running = true;
@ -1227,6 +1232,15 @@ int sdlog2_thread_main(int argc, char *argv[])
LOGBUFFER_WRITE_AND_COUNT(TELE);
}
/* --- BOTTOM DISTANCE --- */
if (copy_if_updated(ORB_ID(sensor_range_finder), subs.range_finder_sub, &buf.range_finder)) {
log_msg.msg_type = LOG_DIST_MSG;
log_msg.body.log_DIST.bottom = buf.range_finder.distance;
log_msg.body.log_DIST.bottom_rate = 0.0f;
log_msg.body.log_DIST.flags = (buf.range_finder.valid ? 1 : 0);
LOGBUFFER_WRITE_AND_COUNT(DIST);
}
/* signal the other thread new data, but not yet unlock */
if (logbuffer_count(&lb) > MIN_BYTES_TO_WRITE) {
/* only request write if several packets can be written at once */