forked from Archive/PX4-Autopilot
Support for HMC5983, which can also be attached via SPI
This commit is contained in:
Lorenz Meier
parent
cd38116116
commit
dd165100fb
|
|
@ -1,6 +1,6 @@
|
|||
/****************************************************************************
|
||||
*
|
||||
* Copyright (c) 2012-2014 PX4 Development Team. All rights reserved.
|
||||
* Copyright (c) 2012-2015 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
|
||||
|
|
@ -34,7 +34,7 @@
|
|||
/**
|
||||
* @file hmc5883.cpp
|
||||
*
|
||||
* Driver for the HMC5883 magnetometer connected via I2C.
|
||||
* Driver for the HMC5883 / HMC5983 magnetometer connected via I2C or SPI.
|
||||
*/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
|
@ -74,11 +74,12 @@
|
|||
#include <getopt.h>
|
||||
#include <lib/conversion/rotation.h>
|
||||
|
||||
#include "hmc5883.h"
|
||||
|
||||
/*
|
||||
* HMC5883 internal constants and data structures.
|
||||
*/
|
||||
|
||||
#define HMC5883L_ADDRESS PX4_I2C_OBDEV_HMC5883
|
||||
#define HMC5883L_DEVICE_PATH_INT "/dev/hmc5883_int"
|
||||
#define HMC5883L_DEVICE_PATH_EXT "/dev/hmc5883_ext"
|
||||
|
||||
|
|
@ -95,9 +96,6 @@
|
|||
#define ADDR_DATA_OUT_Y_MSB 0x07
|
||||
#define ADDR_DATA_OUT_Y_LSB 0x08
|
||||
#define ADDR_STATUS 0x09
|
||||
#define ADDR_ID_A 0x0a
|
||||
#define ADDR_ID_B 0x0b
|
||||
#define ADDR_ID_C 0x0c
|
||||
|
||||
/* modes not changeable outside of driver */
|
||||
#define HMC5883L_MODE_NORMAL (0 << 0) /* default */
|
||||
|
|
@ -115,10 +113,11 @@
|
|||
#define STATUS_REG_DATA_OUT_LOCK (1 << 1) /* page 16: set if data is only partially read, read device to reset */
|
||||
#define STATUS_REG_DATA_READY (1 << 0) /* page 16: set if all axes have valid measurements */
|
||||
|
||||
#define ID_A_WHO_AM_I 'H'
|
||||
#define ID_B_WHO_AM_I '4'
|
||||
#define ID_C_WHO_AM_I '3'
|
||||
|
||||
enum HMC5883_BUS {
|
||||
HMC5883_BUS_ALL,
|
||||
HMC5883_BUS_INTERNAL,
|
||||
HMC5883_BUS_EXTERNAL
|
||||
};
|
||||
|
||||
/* oddly, ERROR is not defined for c++ */
|
||||
#ifdef ERROR
|
||||
|
|
@ -130,10 +129,10 @@ static const int ERROR = -1;
|
|||
# error This requires CONFIG_SCHED_WORKQUEUE.
|
||||
#endif
|
||||
|
||||
class HMC5883 : public device::I2C
|
||||
class HMC5883 : public device::CDev
|
||||
{
|
||||
public:
|
||||
HMC5883(int bus, const char *path, enum Rotation rotation);
|
||||
HMC5883(device::Device *interface, const char *path, enum Rotation rotation);
|
||||
virtual ~HMC5883();
|
||||
|
||||
virtual int init();
|
||||
|
|
@ -147,7 +146,7 @@ public:
|
|||
void print_info();
|
||||
|
||||
protected:
|
||||
virtual int probe();
|
||||
Device *_interface;
|
||||
|
||||
private:
|
||||
work_s _work;
|
||||
|
|
@ -174,7 +173,6 @@ private:
|
|||
bool _sensor_ok; /**< sensor was found and reports ok */
|
||||
bool _calibrated; /**< the calibration is valid */
|
||||
|
||||
int _bus; /**< the bus the device is connected to */
|
||||
enum Rotation _rotation;
|
||||
|
||||
struct mag_report _last_report; /**< used for info() */
|
||||
|
|
@ -182,15 +180,6 @@ private:
|
|||
uint8_t _range_bits;
|
||||
uint8_t _conf_reg;
|
||||
|
||||
/**
|
||||
* Test whether the device supported by the driver is present at a
|
||||
* specific address.
|
||||
*
|
||||
* @param address The I2C bus address to probe.
|
||||
* @return True if the device is present.
|
||||
*/
|
||||
int probe_address(uint8_t address);
|
||||
|
||||
/**
|
||||
* Initialise the automatic measurement state machine and start it.
|
||||
*
|
||||
|
|
@ -349,8 +338,9 @@ private:
|
|||
extern "C" __EXPORT int hmc5883_main(int argc, char *argv[]);
|
||||
|
||||
|
||||
HMC5883::HMC5883(int bus, const char *path, enum Rotation rotation) :
|
||||
I2C("HMC5883", path, bus, HMC5883L_ADDRESS, 400000),
|
||||
HMC5883::HMC5883(device::Device *interface, const char *path, enum Rotation rotation) :
|
||||
CDev("HMC5883", path),
|
||||
_interface(interface),
|
||||
_work{},
|
||||
_measure_ticks(0),
|
||||
_reports(nullptr),
|
||||
|
|
@ -369,7 +359,6 @@ HMC5883::HMC5883(int bus, const char *path, enum Rotation rotation) :
|
|||
_conf_errors(perf_alloc(PC_COUNT, "hmc5883_conf_errors")),
|
||||
_sensor_ok(false),
|
||||
_calibrated(false),
|
||||
_bus(bus),
|
||||
_rotation(rotation),
|
||||
_last_report{0},
|
||||
_range_bits(0),
|
||||
|
|
@ -416,9 +405,11 @@ HMC5883::init()
|
|||
{
|
||||
int ret = ERROR;
|
||||
|
||||
/* do I2C init (and probe) first */
|
||||
if (I2C::init() != OK)
|
||||
ret = CDev::init();
|
||||
if (ret != OK) {
|
||||
debug("CDev init failed");
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* allocate basic report buffers */
|
||||
_reports = new RingBuffer(2, sizeof(mag_report));
|
||||
|
|
@ -429,20 +420,7 @@ HMC5883::init()
|
|||
reset();
|
||||
|
||||
_class_instance = register_class_devname(MAG_DEVICE_PATH);
|
||||
|
||||
switch (_class_instance) {
|
||||
case CLASS_DEVICE_PRIMARY:
|
||||
_mag_orb_id = ORB_ID(sensor_mag0);
|
||||
break;
|
||||
|
||||
case CLASS_DEVICE_SECONDARY:
|
||||
_mag_orb_id = ORB_ID(sensor_mag1);
|
||||
break;
|
||||
|
||||
case CLASS_DEVICE_TERTIARY:
|
||||
_mag_orb_id = ORB_ID(sensor_mag2);
|
||||
break;
|
||||
}
|
||||
_mag_orb_id = ORB_ID_TRIPLE(sensor_mag, _class_instance);
|
||||
|
||||
ret = OK;
|
||||
/* sensor is ok, but not calibrated */
|
||||
|
|
@ -559,30 +537,6 @@ void HMC5883::check_conf(void)
|
|||
}
|
||||
}
|
||||
|
||||
int
|
||||
HMC5883::probe()
|
||||
{
|
||||
uint8_t data[3] = {0, 0, 0};
|
||||
|
||||
_retries = 10;
|
||||
|
||||
if (read_reg(ADDR_ID_A, data[0]) ||
|
||||
read_reg(ADDR_ID_B, data[1]) ||
|
||||
read_reg(ADDR_ID_C, data[2]))
|
||||
debug("read_reg fail");
|
||||
|
||||
_retries = 2;
|
||||
|
||||
if ((data[0] != ID_A_WHO_AM_I) ||
|
||||
(data[1] != ID_B_WHO_AM_I) ||
|
||||
(data[2] != ID_C_WHO_AM_I)) {
|
||||
debug("ID byte mismatch (%02x,%02x,%02x)", data[0], data[1], data[2]);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
ssize_t
|
||||
HMC5883::read(struct file *filp, char *buffer, size_t buflen)
|
||||
{
|
||||
|
|
@ -643,6 +597,8 @@ HMC5883::read(struct file *filp, char *buffer, size_t buflen)
|
|||
int
|
||||
HMC5883::ioctl(struct file *filp, int cmd, unsigned long arg)
|
||||
{
|
||||
unsigned dummy = arg;
|
||||
|
||||
switch (cmd) {
|
||||
case SENSORIOCSPOLLRATE: {
|
||||
switch (arg) {
|
||||
|
|
@ -768,14 +724,12 @@ HMC5883::ioctl(struct file *filp, int cmd, unsigned long arg)
|
|||
return check_calibration();
|
||||
|
||||
case MAGIOCGEXTERNAL:
|
||||
if (_bus == PX4_I2C_BUS_EXPANSION)
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
debug("MAGIOCGEXTERNAL in main driver");
|
||||
return _interface->ioctl(cmd, dummy);
|
||||
|
||||
default:
|
||||
/* give it to the superclass */
|
||||
return I2C::ioctl(filp, cmd, arg);
|
||||
return CDev::ioctl(filp, cmd, arg);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -890,7 +844,6 @@ HMC5883::collect()
|
|||
} report;
|
||||
|
||||
int ret;
|
||||
uint8_t cmd;
|
||||
uint8_t check_counter;
|
||||
|
||||
perf_begin(_sample_perf);
|
||||
|
|
@ -908,8 +861,7 @@ HMC5883::collect()
|
|||
*/
|
||||
|
||||
/* get measurements from the device */
|
||||
cmd = ADDR_DATA_OUT_X_MSB;
|
||||
ret = transfer(&cmd, 1, (uint8_t *)&hmc_report, sizeof(hmc_report));
|
||||
ret = _interface->read(ADDR_DATA_OUT_X_MSB, (uint8_t *)&hmc_report, sizeof(hmc_report));
|
||||
|
||||
if (ret != OK) {
|
||||
perf_count(_comms_errors);
|
||||
|
|
@ -946,14 +898,14 @@ HMC5883::collect()
|
|||
|
||||
/* scale values for output */
|
||||
|
||||
#ifdef PX4_I2C_BUS_ONBOARD
|
||||
if (_bus == PX4_I2C_BUS_ONBOARD) {
|
||||
// XXX revisit for SPI part, might require a bus type IOCTL
|
||||
unsigned dummy;
|
||||
if (!_interface->ioctl(MAGIOCGEXTERNAL, dummy)) {
|
||||
// convert onboard so it matches offboard for the
|
||||
// scaling below
|
||||
report.y = -report.y;
|
||||
report.x = -report.x;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* the standard external mag by 3DR has x pointing to the
|
||||
* right, y pointing backwards, and z down, therefore switch x
|
||||
|
|
@ -1291,15 +1243,17 @@ int HMC5883::set_excitement(unsigned enable)
|
|||
int
|
||||
HMC5883::write_reg(uint8_t reg, uint8_t val)
|
||||
{
|
||||
uint8_t cmd[] = { reg, val };
|
||||
|
||||
return transfer(&cmd[0], 2, nullptr, 0);
|
||||
uint8_t buf = val;
|
||||
return _interface->write(reg, &buf, 1);
|
||||
}
|
||||
|
||||
int
|
||||
HMC5883::read_reg(uint8_t reg, uint8_t &val)
|
||||
{
|
||||
return transfer(®, 1, &val, 1);
|
||||
uint8_t buf = val;
|
||||
int ret = _interface->read(reg, &buf, 1);
|
||||
val = buf;
|
||||
return ret;
|
||||
}
|
||||
|
||||
float
|
||||
|
|
@ -1351,6 +1305,7 @@ void test(int bus);
|
|||
void reset(int bus);
|
||||
int info(int bus);
|
||||
int calibrate(int bus);
|
||||
const char* get_path(int bus);
|
||||
void usage();
|
||||
|
||||
/**
|
||||
|
|
@ -1360,43 +1315,87 @@ void usage();
|
|||
* is either successfully up and running or failed to start.
|
||||
*/
|
||||
void
|
||||
start(int bus, enum Rotation rotation)
|
||||
start(int external_bus, enum Rotation rotation)
|
||||
{
|
||||
int fd;
|
||||
|
||||
/* create the driver, attempt expansion bus first */
|
||||
if (bus == -1 || bus == PX4_I2C_BUS_EXPANSION) {
|
||||
if (g_dev_ext != nullptr)
|
||||
if (external_bus == HMC5883_BUS_ALL || external_bus == HMC5883_BUS_EXTERNAL) {
|
||||
if (g_dev_ext != nullptr) {
|
||||
errx(0, "already started external");
|
||||
g_dev_ext = new HMC5883(PX4_I2C_BUS_EXPANSION, HMC5883L_DEVICE_PATH_EXT, rotation);
|
||||
if (g_dev_ext != nullptr && OK != g_dev_ext->init()) {
|
||||
delete g_dev_ext;
|
||||
g_dev_ext = nullptr;
|
||||
}
|
||||
|
||||
device::Device *interface = nullptr;
|
||||
|
||||
/* create the driver, only attempt I2C for the external bus */
|
||||
if (interface == nullptr && (HMC5883_I2C_interface != nullptr)) {
|
||||
interface = HMC5883_I2C_interface(PX4_I2C_BUS_EXPANSION);
|
||||
}
|
||||
|
||||
if (interface == nullptr) {
|
||||
warnx("failed to allocate an interface");
|
||||
}
|
||||
|
||||
if (interface->init() != OK) {
|
||||
delete interface;
|
||||
warnx("interface init failed");
|
||||
} else {
|
||||
|
||||
g_dev_ext = new HMC5883(interface, HMC5883L_DEVICE_PATH_EXT, rotation);
|
||||
if (g_dev_ext != nullptr && OK != g_dev_ext->init()) {
|
||||
delete g_dev_ext;
|
||||
g_dev_ext = nullptr;
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#ifdef PX4_I2C_BUS_ONBOARD
|
||||
/* if this failed, attempt onboard sensor */
|
||||
if (bus == -1 || bus == PX4_I2C_BUS_ONBOARD) {
|
||||
if (g_dev_int != nullptr)
|
||||
if (external_bus == HMC5883_BUS_ALL || external_bus == HMC5883_BUS_INTERNAL) {
|
||||
if (g_dev_int != nullptr) {
|
||||
errx(0, "already started internal");
|
||||
g_dev_int = new HMC5883(PX4_I2C_BUS_ONBOARD, HMC5883L_DEVICE_PATH_INT, rotation);
|
||||
if (g_dev_int != nullptr && OK != g_dev_int->init()) {
|
||||
}
|
||||
|
||||
/* tear down the failing onboard instance */
|
||||
delete g_dev_int;
|
||||
g_dev_int = nullptr;
|
||||
device::Device *interface = nullptr;
|
||||
|
||||
if (bus == PX4_I2C_BUS_ONBOARD) {
|
||||
/* create the driver, try SPI first, fall back to I2C if unsuccessful */
|
||||
#ifdef PX4_SPIDEV_HMC
|
||||
if (HMC5883_SPI_interface != nullptr) {
|
||||
interface = HMC5883_SPI_interface(PX4_SPI_BUS_SENSORS);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef PX4_I2C_BUS_ONBOARD
|
||||
if (interface == nullptr && (HMC5883_I2C_interface != nullptr)) {
|
||||
interface = HMC5883_I2C_interface(PX4_I2C_BUS_ONBOARD);
|
||||
}
|
||||
#endif
|
||||
if (interface == nullptr) {
|
||||
warnx("failed to allocate an interface");
|
||||
}
|
||||
|
||||
if (interface->init() != OK) {
|
||||
delete interface;
|
||||
warnx("interface init failed");
|
||||
} else {
|
||||
|
||||
g_dev_int = new HMC5883(interface, HMC5883L_DEVICE_PATH_INT, rotation);
|
||||
if (g_dev_int != nullptr && OK != g_dev_int->init()) {
|
||||
|
||||
/* tear down the failing onboard instance */
|
||||
delete g_dev_int;
|
||||
g_dev_int = nullptr;
|
||||
|
||||
if (external_bus == HMC5883_BUS_INTERNAL) {
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
if (g_dev_int == nullptr && external_bus == HMC5883_BUS_INTERNAL) {
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
if (g_dev_int == nullptr && bus == PX4_I2C_BUS_ONBOARD) {
|
||||
goto fail;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
if (g_dev_int == nullptr && g_dev_ext == nullptr)
|
||||
goto fail;
|
||||
|
|
@ -1425,11 +1424,11 @@ start(int bus, enum Rotation rotation)
|
|||
exit(0);
|
||||
|
||||
fail:
|
||||
if (g_dev_int != nullptr && (bus == -1 || bus == PX4_I2C_BUS_ONBOARD)) {
|
||||
if (g_dev_int != nullptr && (external_bus == HMC5883_BUS_ALL || external_bus == HMC5883_BUS_INTERNAL)) {
|
||||
delete g_dev_int;
|
||||
g_dev_int = nullptr;
|
||||
}
|
||||
if (g_dev_ext != nullptr && (bus == -1 || bus == PX4_I2C_BUS_EXPANSION)) {
|
||||
if (g_dev_ext != nullptr && (external_bus == HMC5883_BUS_ALL || external_bus == HMC5883_BUS_EXTERNAL)) {
|
||||
delete g_dev_ext;
|
||||
g_dev_ext = nullptr;
|
||||
}
|
||||
|
|
@ -1448,7 +1447,7 @@ test(int bus)
|
|||
struct mag_report report;
|
||||
ssize_t sz;
|
||||
int ret;
|
||||
const char *path = (bus==PX4_I2C_BUS_ONBOARD?HMC5883L_DEVICE_PATH_INT:HMC5883L_DEVICE_PATH_EXT);
|
||||
const char *path = get_path(bus);
|
||||
|
||||
int fd = open(path, O_RDONLY);
|
||||
|
||||
|
|
@ -1549,7 +1548,7 @@ test(int bus)
|
|||
int calibrate(int bus)
|
||||
{
|
||||
int ret;
|
||||
const char *path = (bus==PX4_I2C_BUS_ONBOARD?HMC5883L_DEVICE_PATH_INT:HMC5883L_DEVICE_PATH_EXT);
|
||||
const char *path = get_path(bus);
|
||||
|
||||
int fd = open(path, O_RDONLY);
|
||||
|
||||
|
|
@ -1576,7 +1575,7 @@ int calibrate(int bus)
|
|||
void
|
||||
reset(int bus)
|
||||
{
|
||||
const char *path = (bus==PX4_I2C_BUS_ONBOARD?HMC5883L_DEVICE_PATH_INT:HMC5883L_DEVICE_PATH_EXT);
|
||||
const char *path = get_path(bus);
|
||||
|
||||
int fd = open(path, O_RDONLY);
|
||||
|
||||
|
|
@ -1600,12 +1599,12 @@ info(int bus)
|
|||
{
|
||||
int ret = 1;
|
||||
|
||||
HMC5883 *g_dev = (bus == PX4_I2C_BUS_ONBOARD ? g_dev_int : g_dev_ext);
|
||||
HMC5883 *g_dev = (bus == HMC5883_BUS_INTERNAL ? g_dev_int : g_dev_ext);
|
||||
if (g_dev == nullptr) {
|
||||
warnx("not running on bus %d", bus);
|
||||
} else {
|
||||
|
||||
warnx("running on bus: %d (%s)\n", bus, ((PX4_I2C_BUS_ONBOARD) ? "onboard" : "offboard"));
|
||||
warnx("running on bus: %d (%s)\n", bus, ((HMC5883_BUS_INTERNAL) ? "onboard" : "offboard"));
|
||||
|
||||
g_dev->print_info();
|
||||
ret = 0;
|
||||
|
|
@ -1614,6 +1613,12 @@ info(int bus)
|
|||
return ret;
|
||||
}
|
||||
|
||||
const char*
|
||||
get_path(int bus)
|
||||
{
|
||||
return ((bus == HMC5883_BUS_INTERNAL) ? HMC5883L_DEVICE_PATH_INT : HMC5883L_DEVICE_PATH_EXT);
|
||||
}
|
||||
|
||||
void
|
||||
usage()
|
||||
{
|
||||
|
|
@ -1622,7 +1627,7 @@ usage()
|
|||
warnx(" -R rotation");
|
||||
warnx(" -C calibrate on start");
|
||||
warnx(" -X only external bus");
|
||||
#ifdef PX4_I2C_BUS_ONBOARD
|
||||
#if (PX4_I2C_BUS_ONBOARD || PX4_SPIDEV_HMC)
|
||||
warnx(" -I only internal bus");
|
||||
#endif
|
||||
}
|
||||
|
|
@ -1633,7 +1638,7 @@ int
|
|||
hmc5883_main(int argc, char *argv[])
|
||||
{
|
||||
int ch;
|
||||
int bus = -1;
|
||||
int bus = HMC5883_BUS_ALL;
|
||||
enum Rotation rotation = ROTATION_NONE;
|
||||
bool calibrate = false;
|
||||
|
||||
|
|
@ -1642,13 +1647,13 @@ hmc5883_main(int argc, char *argv[])
|
|||
case 'R':
|
||||
rotation = (enum Rotation)atoi(optarg);
|
||||
break;
|
||||
#ifdef PX4_I2C_BUS_ONBOARD
|
||||
#if (PX4_I2C_BUS_ONBOARD || PX4_SPIDEV_HMC)
|
||||
case 'I':
|
||||
bus = PX4_I2C_BUS_ONBOARD;
|
||||
bus = HMC5883_BUS_INTERNAL;
|
||||
break;
|
||||
#endif
|
||||
case 'X':
|
||||
bus = PX4_I2C_BUS_EXPANSION;
|
||||
bus = HMC5883_BUS_EXTERNAL;
|
||||
break;
|
||||
case 'C':
|
||||
calibrate = true;
|
||||
|
|
@ -1692,13 +1697,13 @@ hmc5883_main(int argc, char *argv[])
|
|||
* Print driver information.
|
||||
*/
|
||||
if (!strcmp(verb, "info") || !strcmp(verb, "status")) {
|
||||
if (bus == -1) {
|
||||
if (bus == HMC5883_BUS_ALL) {
|
||||
int ret = 0;
|
||||
if (hmc5883::info(PX4_I2C_BUS_ONBOARD)) {
|
||||
if (hmc5883::info(HMC5883_BUS_INTERNAL)) {
|
||||
ret = 1;
|
||||
}
|
||||
|
||||
if (hmc5883::info(PX4_I2C_BUS_EXPANSION)) {
|
||||
if (hmc5883::info(HMC5883_BUS_EXTERNAL)) {
|
||||
ret = 1;
|
||||
}
|
||||
exit(ret);
|
||||
|
|
|
|||
|
|
@ -0,0 +1,52 @@
|
|||
/****************************************************************************
|
||||
*
|
||||
* Copyright (c) 2015 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 hmc5883.h
|
||||
*
|
||||
* Shared defines for the hmc5883 driver.
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#define ADDR_ID_A 0x0a
|
||||
#define ADDR_ID_B 0x0b
|
||||
#define ADDR_ID_C 0x0c
|
||||
|
||||
#define ID_A_WHO_AM_I 'H'
|
||||
#define ID_B_WHO_AM_I '4'
|
||||
#define ID_C_WHO_AM_I '3'
|
||||
|
||||
/* interface factories */
|
||||
extern device::Device *HMC5883_SPI_interface(int bus) weak_function;
|
||||
extern device::Device *HMC5883_I2C_interface(int bus) weak_function;
|
||||
|
|
@ -0,0 +1,175 @@
|
|||
/****************************************************************************
|
||||
*
|
||||
* Copyright (c) 2013-2015 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 HMC5883_I2C.cpp
|
||||
*
|
||||
* I2C interface for HMC5883 / HMC 5983
|
||||
*/
|
||||
|
||||
/* XXX trim includes */
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <string.h>
|
||||
#include <assert.h>
|
||||
#include <debug.h>
|
||||
#include <errno.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <arch/board/board.h>
|
||||
|
||||
#include <drivers/device/i2c.h>
|
||||
#include <drivers/drv_mag.h>
|
||||
|
||||
#include "hmc5883.h"
|
||||
|
||||
#include "board_config.h"
|
||||
|
||||
#ifdef PX4_I2C_OBDEV_HMC5883
|
||||
|
||||
#define HMC5883L_ADDRESS PX4_I2C_OBDEV_HMC5883
|
||||
|
||||
device::Device *HMC5883_I2C_interface(int bus);
|
||||
|
||||
class HMC5883_I2C : public device::I2C
|
||||
{
|
||||
public:
|
||||
HMC5883_I2C(int bus);
|
||||
virtual ~HMC5883_I2C();
|
||||
|
||||
virtual int init();
|
||||
virtual int read(unsigned address, void *data, unsigned count);
|
||||
virtual int write(unsigned address, void *data, unsigned count);
|
||||
|
||||
virtual int ioctl(unsigned operation, unsigned &arg);
|
||||
|
||||
protected:
|
||||
virtual int probe();
|
||||
|
||||
};
|
||||
|
||||
device::Device *
|
||||
HMC5883_I2C_interface(int bus)
|
||||
{
|
||||
return new HMC5883_I2C(bus);
|
||||
}
|
||||
|
||||
HMC5883_I2C::HMC5883_I2C(int bus) :
|
||||
I2C("HMC5883_I2C", nullptr, bus, 0, 400000)
|
||||
{
|
||||
}
|
||||
|
||||
HMC5883_I2C::~HMC5883_I2C()
|
||||
{
|
||||
}
|
||||
|
||||
int
|
||||
HMC5883_I2C::init()
|
||||
{
|
||||
/* this will call probe() */
|
||||
return I2C::init();
|
||||
}
|
||||
|
||||
int
|
||||
HMC5883_I2C::ioctl(unsigned operation, unsigned &arg)
|
||||
{
|
||||
int ret;
|
||||
|
||||
switch (operation) {
|
||||
|
||||
case MAGIOCGEXTERNAL:
|
||||
if (_bus == PX4_I2C_BUS_EXPANSION) {
|
||||
return 1;
|
||||
} else {
|
||||
return 0;
|
||||
}
|
||||
|
||||
default:
|
||||
ret = -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int
|
||||
HMC5883_I2C::probe()
|
||||
{
|
||||
uint8_t data[3] = {0, 0, 0};
|
||||
|
||||
_retries = 10;
|
||||
|
||||
if (read(ADDR_ID_A, &data[0], 1) ||
|
||||
read(ADDR_ID_B, &data[1], 1) ||
|
||||
read(ADDR_ID_C, &data[2], 1)) {
|
||||
debug("read_reg fail");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
_retries = 2;
|
||||
|
||||
if ((data[0] != ID_A_WHO_AM_I) ||
|
||||
(data[1] != ID_B_WHO_AM_I) ||
|
||||
(data[2] != ID_C_WHO_AM_I)) {
|
||||
debug("ID byte mismatch (%02x,%02x,%02x)", data[0], data[1], data[2]);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
int
|
||||
HMC5883_I2C::write(unsigned address, void *data, unsigned count)
|
||||
{
|
||||
uint8_t buf[32];
|
||||
|
||||
if (sizeof(buf) < (count + 1)) {
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
buf[0] = address;
|
||||
memcpy(&buf[1], data, count);
|
||||
|
||||
return transfer(&buf[0], count + 1, nullptr, 0);
|
||||
}
|
||||
|
||||
int
|
||||
HMC5883_I2C::read(unsigned address, void *data, unsigned count)
|
||||
{
|
||||
uint8_t cmd = address;
|
||||
return transfer(&cmd, 1, (uint8_t *)data, count);
|
||||
}
|
||||
|
||||
#endif /* PX4_I2C_OBDEV_HMC5883 */
|
||||
|
|
@ -0,0 +1,189 @@
|
|||
/****************************************************************************
|
||||
*
|
||||
* Copyright (c) 2013-2015 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 HMC5883_SPI.cpp
|
||||
*
|
||||
* SPI interface for HMC5983
|
||||
*/
|
||||
|
||||
/* XXX trim includes */
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <string.h>
|
||||
#include <assert.h>
|
||||
#include <debug.h>
|
||||
#include <errno.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <arch/board/board.h>
|
||||
|
||||
#include <drivers/device/spi.h>
|
||||
#include <drivers/drv_mag.h>
|
||||
|
||||
#include "hmc5883.h"
|
||||
#include <board_config.h>
|
||||
|
||||
#ifdef PX4_SPIDEV_HMC
|
||||
|
||||
/* SPI protocol address bits */
|
||||
#define DIR_READ (1<<7)
|
||||
#define DIR_WRITE (0<<7)
|
||||
#define ADDR_INCREMENT (1<<6)
|
||||
|
||||
#define HMC_MAX_SEND_LEN 4
|
||||
#define HMC_MAX_RCV_LEN 8
|
||||
|
||||
device::Device *HMC5883_SPI_interface(int bus);
|
||||
|
||||
class HMC5883_SPI : public device::SPI
|
||||
{
|
||||
public:
|
||||
HMC5883_SPI(int bus, spi_dev_e device);
|
||||
virtual ~HMC5883_SPI();
|
||||
|
||||
virtual int init();
|
||||
virtual int read(unsigned address, void *data, unsigned count);
|
||||
virtual int write(unsigned address, void *data, unsigned count);
|
||||
|
||||
virtual int ioctl(unsigned operation, unsigned &arg);
|
||||
|
||||
};
|
||||
|
||||
device::Device *
|
||||
HMC5883_SPI_interface(int bus)
|
||||
{
|
||||
return new HMC5883_SPI(bus, (spi_dev_e)PX4_SPIDEV_HMC);
|
||||
}
|
||||
|
||||
HMC5883_SPI::HMC5883_SPI(int bus, spi_dev_e device) :
|
||||
SPI("HMC5883_SPI", nullptr, bus, device, SPIDEV_MODE3, 11*1000*1000 /* will be rounded to 10.4 MHz */)
|
||||
{
|
||||
}
|
||||
|
||||
HMC5883_SPI::~HMC5883_SPI()
|
||||
{
|
||||
}
|
||||
|
||||
int
|
||||
HMC5883_SPI::init()
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = SPI::init();
|
||||
if (ret != OK) {
|
||||
debug("SPI init failed");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
// read WHO_AM_I value
|
||||
uint8_t data[3] = {0, 0, 0};
|
||||
|
||||
if (read(ADDR_ID_A, &data[0], 1) ||
|
||||
read(ADDR_ID_B, &data[1], 1) ||
|
||||
read(ADDR_ID_C, &data[2], 1)) {
|
||||
debug("read_reg fail");
|
||||
}
|
||||
|
||||
if ((data[0] != ID_A_WHO_AM_I) ||
|
||||
(data[1] != ID_B_WHO_AM_I) ||
|
||||
(data[2] != ID_C_WHO_AM_I)) {
|
||||
debug("ID byte mismatch (%02x,%02x,%02x)", data[0], data[1], data[2]);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
int
|
||||
HMC5883_SPI::ioctl(unsigned operation, unsigned &arg)
|
||||
{
|
||||
int ret;
|
||||
|
||||
switch (operation) {
|
||||
|
||||
case MAGIOCGEXTERNAL:
|
||||
|
||||
#ifdef PX4_SPI_BUS_EXT
|
||||
if (_bus == PX4_SPI_BUS_EXT) {
|
||||
return 1;
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
default:
|
||||
{
|
||||
ret = -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int
|
||||
HMC5883_SPI::write(unsigned address, void *data, unsigned count)
|
||||
{
|
||||
uint8_t buf[32];
|
||||
|
||||
if (sizeof(buf) < (count + 1)) {
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
buf[0] = address | DIR_WRITE;
|
||||
memcpy(&buf[1], data, count);
|
||||
|
||||
return transfer(&buf[0], &buf[0], count + 1);
|
||||
}
|
||||
|
||||
int
|
||||
HMC5883_SPI::read(unsigned address, void *data, unsigned count)
|
||||
{
|
||||
uint8_t buf[32];
|
||||
|
||||
if (sizeof(buf) < (count + 1)) {
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
buf[0] = address | DIR_READ | ADDR_INCREMENT;
|
||||
|
||||
int ret = transfer(&buf[0], &buf[0], count + 1);
|
||||
memcpy(data, &buf[1], count);
|
||||
return ret;
|
||||
}
|
||||
|
||||
#endif /* PX4_SPIDEV_HMC */
|
||||
|
|
@ -1,6 +1,6 @@
|
|||
############################################################################
|
||||
#
|
||||
# Copyright (c) 2012, 2013 PX4 Development Team. All rights reserved.
|
||||
# Copyright (c) 2012-2015 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
|
||||
|
|
@ -37,7 +37,7 @@
|
|||
|
||||
MODULE_COMMAND = hmc5883
|
||||
|
||||
SRCS = hmc5883.cpp
|
||||
SRCS = hmc5883_i2c.cpp hmc5883_spi.cpp hmc5883.cpp
|
||||
|
||||
MODULE_STACKSIZE = 1200
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue