diff options
Diffstat (limited to 'apps/drivers/l3gd20/l3gd20.cpp')
| -rw-r--r-- | apps/drivers/l3gd20/l3gd20.cpp | 887 |
1 files changed, 0 insertions, 887 deletions
diff --git a/apps/drivers/l3gd20/l3gd20.cpp b/apps/drivers/l3gd20/l3gd20.cpp deleted file mode 100644 index c7f433dd4..000000000 --- a/apps/drivers/l3gd20/l3gd20.cpp +++ /dev/null @@ -1,887 +0,0 @@ -/**************************************************************************** - * - * 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. - * - ****************************************************************************/ - -/** - * @file Driver for the ST L3GD20 MEMS gyro connected via SPI. - */ - -#include <nuttx/config.h> - -#include <sys/types.h> -#include <stdint.h> -#include <stdbool.h> -#include <stddef.h> -#include <stdlib.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 <systemlib/perf_counter.h> -#include <systemlib/err.h> - -#include <nuttx/arch.h> -#include <nuttx/clock.h> - -#include <drivers/drv_hrt.h> -#include <arch/board/board.h> - -#include <drivers/device/spi.h> -#include <drivers/drv_gyro.h> - - -/* oddly, ERROR is not defined for c++ */ -#ifdef ERROR -# undef ERROR -#endif -static const int ERROR = -1; - -/* SPI protocol address bits */ -#define DIR_READ (1<<7) -#define DIR_WRITE (0<<7) -#define ADDR_INCREMENT (1<<6) - -/* register addresses */ -#define ADDR_WHO_AM_I 0x0F -#define WHO_I_AM 0xD4 - -#define ADDR_CTRL_REG1 0x20 -#define REG1_RATE_LP_MASK 0xF0 /* Mask to guard partial register update */ -/* keep lowpass low to avoid noise issues */ -#define RATE_95HZ_LP_25HZ ((0<<7) | (0<<6) | (0<<5) | (1<<4)) -#define RATE_190HZ_LP_25HZ ((0<<7) | (1<<6) | (1<<5) | (1<<4)) -#define RATE_380HZ_LP_30HZ ((1<<7) | (0<<6) | (1<<5) | (1<<4)) -#define RATE_760HZ_LP_30HZ ((1<<7) | (1<<6) | (1<<5) | (1<<4)) - -#define ADDR_CTRL_REG2 0x21 -#define ADDR_CTRL_REG3 0x22 -#define ADDR_CTRL_REG4 0x23 -#define REG4_RANGE_MASK 0x30 /* Mask to guard partial register update */ -#define RANGE_250DPS (0<<4) -#define RANGE_500DPS (1<<4) -#define RANGE_2000DPS (3<<4) - -#define ADDR_CTRL_REG5 0x24 -#define ADDR_REFERENCE 0x25 -#define ADDR_OUT_TEMP 0x26 -#define ADDR_STATUS_REG 0x27 -#define ADDR_OUT_X_L 0x28 -#define ADDR_OUT_X_H 0x29 -#define ADDR_OUT_Y_L 0x2A -#define ADDR_OUT_Y_H 0x2B -#define ADDR_OUT_Z_L 0x2C -#define ADDR_OUT_Z_H 0x2D -#define ADDR_FIFO_CTRL_REG 0x2E -#define ADDR_FIFO_SRC_REG 0x2F -#define ADDR_INT1_CFG 0x30 -#define ADDR_INT1_SRC 0x31 -#define ADDR_INT1_TSH_XH 0x32 -#define ADDR_INT1_TSH_XL 0x33 -#define ADDR_INT1_TSH_YH 0x34 -#define ADDR_INT1_TSH_YL 0x35 -#define ADDR_INT1_TSH_ZH 0x36 -#define ADDR_INT1_TSH_ZL 0x37 -#define ADDR_INT1_DURATION 0x38 - - -/* Internal configuration values */ -#define REG1_POWER_NORMAL (1<<3) -#define REG1_Z_ENABLE (1<<2) -#define REG1_Y_ENABLE (1<<1) -#define REG1_X_ENABLE (1<<0) - -#define REG4_BDU (1<<7) -#define REG4_BLE (1<<6) -//#define REG4_SPI_3WIRE (1<<0) - -#define REG5_FIFO_ENABLE (1<<6) -#define REG5_REBOOT_MEMORY (1<<7) - -#define STATUS_ZYXOR (1<<7) -#define STATUS_ZOR (1<<6) -#define STATUS_YOR (1<<5) -#define STATUS_XOR (1<<4) -#define STATUS_ZYXDA (1<<3) -#define STATUS_ZDA (1<<2) -#define STATUS_YDA (1<<1) -#define STATUS_XDA (1<<0) - -#define FIFO_CTRL_BYPASS_MODE (0<<5) -#define FIFO_CTRL_FIFO_MODE (1<<5) -#define FIFO_CTRL_STREAM_MODE (1<<6) -#define FIFO_CTRL_STREAM_TO_FIFO_MODE (3<<5) -#define FIFO_CTRL_BYPASS_TO_STREAM_MODE (1<<7) - -extern "C" { __EXPORT int l3gd20_main(int argc, char *argv[]); } - -class L3GD20 : public device::SPI -{ -public: - L3GD20(int bus, const char* path, spi_dev_e device); - virtual ~L3GD20(); - - 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: - - struct hrt_call _call; - unsigned _call_interval; - - unsigned _num_reports; - volatile unsigned _next_report; - volatile unsigned _oldest_report; - struct gyro_report *_reports; - - struct gyro_scale _gyro_scale; - float _gyro_range_scale; - float _gyro_range_rad_s; - orb_advert_t _gyro_topic; - - unsigned _current_rate; - unsigned _current_range; - - perf_counter_t _sample_perf; - - /** - * Start automatic measurement. - */ - void start(); - - /** - * Stop automatic measurement. - */ - void stop(); - - /** - * Static trampoline from the hrt_call context; because we don't have a - * generic hrt wrapper yet. - * - * Called by the HRT in interrupt context at the specified rate if - * automatic polling is enabled. - * - * @param arg Instance pointer for the driver that is polling. - */ - static void measure_trampoline(void *arg); - - /** - * Fetch measurements from the sensor and update the report ring. - */ - void measure(); - - /** - * Read a register from the L3GD20 - * - * @param The register to read. - * @return The value that was read. - */ - uint8_t read_reg(unsigned reg); - - /** - * Write a register in the L3GD20 - * - * @param reg The register to write. - * @param value The new value to write. - */ - void write_reg(unsigned reg, uint8_t value); - - /** - * Modify a register in the L3GD20 - * - * Bits are cleared before bits are set. - * - * @param reg The register to modify. - * @param clearbits Bits in the register to clear. - * @param setbits Bits in the register to set. - */ - void modify_reg(unsigned reg, uint8_t clearbits, uint8_t setbits); - - /** - * Set the L3GD20 measurement range. - * - * @param max_dps The measurement range is set to permit reading at least - * this rate in degrees per second. - * Zero selects the maximum supported range. - * @return OK if the value can be supported, -ERANGE otherwise. - */ - int set_range(unsigned max_dps); - - /** - * Set the L3GD20 internal sampling frequency. - * - * @param frequency The internal sampling frequency is set to not less than - * this value. - * Zero selects the maximum rate supported. - * @return OK if the value can be supported. - */ - int set_samplerate(unsigned frequency); -}; - -/* helper macro for handling report buffer indices */ -#define INCREMENT(_x, _lim) do { _x++; if (_x >= _lim) _x = 0; } while(0) - - -L3GD20::L3GD20(int bus, const char* path, spi_dev_e device) : - SPI("L3GD20", path, bus, device, SPIDEV_MODE3, 8000000), - _call_interval(0), - _num_reports(0), - _next_report(0), - _oldest_report(0), - _reports(nullptr), - _gyro_range_scale(0.0f), - _gyro_range_rad_s(0.0f), - _gyro_topic(-1), - _current_rate(0), - _current_range(0), - _sample_perf(perf_alloc(PC_ELAPSED, "l3gd20_read")) -{ - // enable debug() calls - _debug_enabled = true; - - // default scale factors - _gyro_scale.x_offset = 0; - _gyro_scale.x_scale = 1.0f; - _gyro_scale.y_offset = 0; - _gyro_scale.y_scale = 1.0f; - _gyro_scale.z_offset = 0; - _gyro_scale.z_scale = 1.0f; -} - -L3GD20::~L3GD20() -{ - /* make sure we are truly inactive */ - stop(); - - /* free any existing reports */ - if (_reports != nullptr) - delete[] _reports; - - /* delete the perf counter */ - perf_free(_sample_perf); -} - -int -L3GD20::init() -{ - int ret = ERROR; - - /* do SPI init (and probe) first */ - if (SPI::init() != OK) - goto out; - - /* allocate basic report buffers */ - _num_reports = 2; - _oldest_report = _next_report = 0; - _reports = new struct gyro_report[_num_reports]; - - if (_reports == nullptr) - goto out; - - /* advertise sensor topic */ - memset(&_reports[0], 0, sizeof(_reports[0])); - _gyro_topic = orb_advertise(ORB_ID(sensor_gyro), &_reports[0]); - - /* set default configuration */ - write_reg(ADDR_CTRL_REG1, REG1_POWER_NORMAL | REG1_Z_ENABLE | REG1_Y_ENABLE | REG1_X_ENABLE); - write_reg(ADDR_CTRL_REG2, 0); /* disable high-pass filters */ - write_reg(ADDR_CTRL_REG3, 0); /* no interrupts - we don't use them */ - write_reg(ADDR_CTRL_REG4, REG4_BDU); - write_reg(ADDR_CTRL_REG5, 0); - - write_reg(ADDR_CTRL_REG5, REG5_FIFO_ENABLE); /* disable wake-on-interrupt */ - write_reg(ADDR_FIFO_CTRL_REG, FIFO_CTRL_STREAM_MODE); /* Enable FIFO, old data is overwritten */ - - set_range(500); /* default to 500dps */ - set_samplerate(0); /* max sample rate */ - - ret = OK; -out: - return ret; -} - -int -L3GD20::probe() -{ - /* read dummy value to void to clear SPI statemachine on sensor */ - (void)read_reg(ADDR_WHO_AM_I); - - /* verify that the device is attached and functioning */ - if (read_reg(ADDR_WHO_AM_I) == WHO_I_AM) - return OK; - - return -EIO; -} - -ssize_t -L3GD20::read(struct file *filp, char *buffer, size_t buflen) -{ - unsigned count = buflen / sizeof(struct gyro_report); - int ret = 0; - - /* buffer must be large enough */ - if (count < 1) - return -ENOSPC; - - /* if automatic measurement is enabled */ - if (_call_interval > 0) { - - /* - * While there is space in the caller's buffer, and reports, copy them. - * Note that we may be pre-empted by the measurement code while we are doing this; - * we are careful to avoid racing with it. - */ - while (count--) { - if (_oldest_report != _next_report) { - memcpy(buffer, _reports + _oldest_report, sizeof(*_reports)); - ret += sizeof(_reports[0]); - INCREMENT(_oldest_report, _num_reports); - } - } - - /* if there was no data, warn the caller */ - return ret ? ret : -EAGAIN; - } - - /* manual measurement */ - _oldest_report = _next_report = 0; - measure(); - - /* measurement will have generated a report, copy it out */ - memcpy(buffer, _reports, sizeof(*_reports)); - ret = sizeof(*_reports); - - return ret; -} - -int -L3GD20::ioctl(struct file *filp, int cmd, unsigned long arg) -{ - switch (cmd) { - - case SENSORIOCSPOLLRATE: { - switch (arg) { - - /* switching to manual polling */ - case SENSOR_POLLRATE_MANUAL: - stop(); - _call_interval = 0; - return OK; - - /* external signalling 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: - /* With internal low pass filters enabled, 250 Hz is sufficient */ - return ioctl(filp, SENSORIOCSPOLLRATE, 250); - - /* adjust to a legal polling interval in Hz */ - default: { - /* do we need to start internal polling? */ - bool want_start = (_call_interval == 0); - - /* convert hz to hrt interval via microseconds */ - unsigned ticks = 1000000 / arg; - - /* check against maximum sane rate */ - if (ticks < 1000) - return -EINVAL; - - /* update interval for next measurement */ - /* XXX this is a bit shady, but no other way to adjust... */ - _call.period = _call_interval = ticks; - - /* if we need to start the poll state machine, do it */ - if (want_start) - start(); - - return OK; - } - } - } - - case SENSORIOCGPOLLRATE: - if (_call_interval == 0) - return SENSOR_POLLRATE_MANUAL; - - return 1000000 / _call_interval; - - case SENSORIOCSQUEUEDEPTH: { - /* account for sentinel in the ring */ - arg++; - - /* lower bound is mandatory, upper bound is a sanity check */ - if ((arg < 2) || (arg > 100)) - return -EINVAL; - - /* allocate new buffer */ - struct gyro_report *buf = new struct gyro_report[arg]; - - if (nullptr == buf) - return -ENOMEM; - - /* reset the measurement state machine with the new buffer, free the old */ - stop(); - delete[] _reports; - _num_reports = arg; - _reports = buf; - start(); - - return OK; - } - - case SENSORIOCGQUEUEDEPTH: - return _num_reports - 1; - - case SENSORIOCRESET: - /* XXX implement */ - return -EINVAL; - - case GYROIOCSSAMPLERATE: - return set_samplerate(arg); - - case GYROIOCGSAMPLERATE: - return _current_rate; - - case GYROIOCSLOWPASS: - case GYROIOCGLOWPASS: - /* XXX not implemented due to wacky interaction with samplerate */ - return -EINVAL; - - case GYROIOCSSCALE: - /* copy scale in */ - memcpy(&_gyro_scale, (struct gyro_scale *) arg, sizeof(_gyro_scale)); - return OK; - - case GYROIOCGSCALE: - /* copy scale out */ - memcpy((struct gyro_scale *) arg, &_gyro_scale, sizeof(_gyro_scale)); - return OK; - - case GYROIOCSRANGE: - return set_range(arg); - - case GYROIOCGRANGE: - return _current_range; - - default: - /* give it to the superclass */ - return SPI::ioctl(filp, cmd, arg); - } -} - -uint8_t -L3GD20::read_reg(unsigned reg) -{ - uint8_t cmd[2]; - - cmd[0] = reg | DIR_READ; - - transfer(cmd, cmd, sizeof(cmd)); - - return cmd[1]; -} - -void -L3GD20::write_reg(unsigned reg, uint8_t value) -{ - uint8_t cmd[2]; - - cmd[0] = reg | DIR_WRITE; - cmd[1] = value; - - transfer(cmd, nullptr, sizeof(cmd)); -} - -void -L3GD20::modify_reg(unsigned reg, uint8_t clearbits, uint8_t setbits) -{ - uint8_t val; - - val = read_reg(reg); - val &= ~clearbits; - val |= setbits; - write_reg(reg, val); -} - -int -L3GD20::set_range(unsigned max_dps) -{ - uint8_t bits = REG4_BDU; - - if (max_dps == 0) - max_dps = 2000; - - if (max_dps <= 250) { - _current_range = 250; - bits |= RANGE_250DPS; - - } else if (max_dps <= 500) { - _current_range = 500; - bits |= RANGE_500DPS; - - } else if (max_dps <= 2000) { - _current_range = 2000; - bits |= RANGE_2000DPS; - - } else { - return -EINVAL; - } - - _gyro_range_rad_s = _current_range / 180.0f * M_PI_F; - _gyro_range_scale = _gyro_range_rad_s / 32768.0f; - write_reg(ADDR_CTRL_REG4, bits); - - return OK; -} - -int -L3GD20::set_samplerate(unsigned frequency) -{ - uint8_t bits = REG1_POWER_NORMAL | REG1_Z_ENABLE | REG1_Y_ENABLE | REG1_X_ENABLE; - - if (frequency == 0) - frequency = 760; - - if (frequency <= 95) { - _current_rate = 95; - bits |= RATE_95HZ_LP_25HZ; - - } else if (frequency <= 190) { - _current_rate = 190; - bits |= RATE_190HZ_LP_25HZ; - - } else if (frequency <= 380) { - _current_rate = 380; - bits |= RATE_380HZ_LP_30HZ; - - } else if (frequency <= 760) { - _current_rate = 760; - bits |= RATE_760HZ_LP_30HZ; - - } else { - return -EINVAL; - } - - write_reg(ADDR_CTRL_REG1, bits); - - return OK; -} - -void -L3GD20::start() -{ - /* make sure we are stopped first */ - stop(); - - /* reset the report ring */ - _oldest_report = _next_report = 0; - - /* start polling at the specified rate */ - hrt_call_every(&_call, 1000, _call_interval, (hrt_callout)&L3GD20::measure_trampoline, this); -} - -void -L3GD20::stop() -{ - hrt_cancel(&_call); -} - -void -L3GD20::measure_trampoline(void *arg) -{ - L3GD20 *dev = (L3GD20 *)arg; - - /* make another measurement */ - dev->measure(); -} - -void -L3GD20::measure() -{ - /* status register and data as read back from the device */ -#pragma pack(push, 1) - struct { - uint8_t cmd; - uint8_t temp; - uint8_t status; - int16_t x; - int16_t y; - int16_t z; - } raw_report; -#pragma pack(pop) - - gyro_report *report = &_reports[_next_report]; - - /* start the performance counter */ - perf_begin(_sample_perf); - - /* fetch data from the sensor */ - raw_report.cmd = ADDR_OUT_TEMP | DIR_READ | ADDR_INCREMENT; - transfer((uint8_t *)&raw_report, (uint8_t *)&raw_report, sizeof(raw_report)); - - /* - * 1) Scale raw value to SI units using scaling from datasheet. - * 2) Subtract static offset (in SI units) - * 3) Scale the statically calibrated values with a linear - * dynamically obtained factor - * - * Note: the static sensor offset is the number the sensor outputs - * at a nominally 'zero' input. Therefore the offset has to - * be subtracted. - * - * Example: A gyro outputs a value of 74 at zero angular rate - * the offset is 74 from the origin and subtracting - * 74 from all measurements centers them around zero. - */ - report->timestamp = hrt_absolute_time(); - - /* swap x and y and negate y */ - report->x_raw = raw_report.y; - report->y_raw = ((raw_report.x == -32768) ? 32767 : -raw_report.x); - report->z_raw = raw_report.z; - - report->x = ((report->x_raw * _gyro_range_scale) - _gyro_scale.x_offset) * _gyro_scale.x_scale; - report->y = ((report->y_raw * _gyro_range_scale) - _gyro_scale.y_offset) * _gyro_scale.y_scale; - report->z = ((report->z_raw * _gyro_range_scale) - _gyro_scale.z_offset) * _gyro_scale.z_scale; - report->scaling = _gyro_range_scale; - report->range_rad_s = _gyro_range_rad_s; - - /* post a report to the ring - note, not locked */ - INCREMENT(_next_report, _num_reports); - - /* if we are running up against the oldest report, fix it */ - if (_next_report == _oldest_report) - INCREMENT(_oldest_report, _num_reports); - - /* notify anyone waiting for data */ - poll_notify(POLLIN); - - /* publish for subscribers */ - orb_publish(ORB_ID(sensor_gyro), _gyro_topic, report); - - /* stop the perf counter */ - perf_end(_sample_perf); -} - -void -L3GD20::print_info() -{ - perf_print_counter(_sample_perf); - printf("report queue: %u (%u/%u @ %p)\n", - _num_reports, _oldest_report, _next_report, _reports); -} - -/** - * Local functions in support of the shell command. - */ -namespace l3gd20 -{ - -L3GD20 *g_dev; - -void start(); -void test(); -void reset(); -void info(); - -/** - * Start the driver. - */ -void -start() -{ - int fd; - - if (g_dev != nullptr) - errx(1, "already started"); - - /* create the driver */ - g_dev = new L3GD20(1 /* XXX magic number */, GYRO_DEVICE_PATH, (spi_dev_e)PX4_SPIDEV_GYRO); - - 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(GYRO_DEVICE_PATH, O_RDONLY); - - if (fd < 0) - 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"); -} - -/** - * Perform some basic functional tests on the driver; - * make sure we can collect data from the sensor in polled - * and automatic modes. - */ -void -test() -{ - int fd_gyro = -1; - struct gyro_report g_report; - ssize_t sz; - - /* get the driver */ - fd_gyro = open(GYRO_DEVICE_PATH, O_RDONLY); - - if (fd_gyro < 0) - err(1, "%s open failed", GYRO_DEVICE_PATH); - - /* reset to manual polling */ - if (ioctl(fd_gyro, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_MANUAL) < 0) - err(1, "reset to manual polling"); - - /* do a simple demand read */ - sz = read(fd_gyro, &g_report, sizeof(g_report)); - - if (sz != sizeof(g_report)) - err(1, "immediate gyro read failed"); - - warnx("gyro x: \t% 9.5f\trad/s", (double)g_report.x); - warnx("gyro y: \t% 9.5f\trad/s", (double)g_report.y); - warnx("gyro z: \t% 9.5f\trad/s", (double)g_report.z); - warnx("gyro x: \t%d\traw", (int)g_report.x_raw); - warnx("gyro y: \t%d\traw", (int)g_report.y_raw); - warnx("gyro z: \t%d\traw", (int)g_report.z_raw); - warnx("gyro range: %8.4f rad/s (%d deg/s)", (double)g_report.range_rad_s, - (int)((g_report.range_rad_s / M_PI_F) * 180.0f + 0.5f)); - - /* XXX add poll-rate tests here too */ - - reset(); - errx(0, "PASS"); -} - -/** - * Reset the driver. - */ -void -reset() -{ - int fd = open(GYRO_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\n"); - - printf("state @ %p\n", g_dev); - g_dev->print_info(); - - exit(0); -} - - -} // namespace - -int -l3gd20_main(int argc, char *argv[]) -{ - /* - * Start/load the driver. - - */ - if (!strcmp(argv[1], "start")) - l3gd20::start(); - - /* - * Test the driver/device. - */ - if (!strcmp(argv[1], "test")) - l3gd20::test(); - - /* - * Reset the driver. - */ - if (!strcmp(argv[1], "reset")) - l3gd20::reset(); - - /* - * Print driver information. - */ - if (!strcmp(argv[1], "info")) - l3gd20::info(); - - errx(1, "unrecognized command, try 'start', 'test', 'reset' or 'info'"); -} |