diff options
Diffstat (limited to 'apps/drivers/bma180/bma180.cpp')
-rw-r--r-- | apps/drivers/bma180/bma180.cpp | 929 |
1 files changed, 0 insertions, 929 deletions
diff --git a/apps/drivers/bma180/bma180.cpp b/apps/drivers/bma180/bma180.cpp deleted file mode 100644 index 4409a8a9c..000000000 --- a/apps/drivers/bma180/bma180.cpp +++ /dev/null @@ -1,929 +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 bma180.cpp - * Driver for the Bosch BMA 180 MEMS accelerometer 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/wqueue.h> -#include <nuttx/clock.h> - -#include <drivers/drv_hrt.h> -#include <arch/board/board.h> - -#include <drivers/device/spi.h> -#include <drivers/drv_accel.h> - - -/* oddly, ERROR is not defined for c++ */ -#ifdef ERROR -# undef ERROR -#endif -static const int ERROR = -1; - -#define DIR_READ (1<<7) -#define DIR_WRITE (0<<7) - -#define ADDR_CHIP_ID 0x00 -#define CHIP_ID 0x03 - -#define ADDR_ACC_X_LSB 0x02 -#define ADDR_ACC_Y_LSB 0x04 -#define ADDR_ACC_Z_LSB 0x06 -#define ADDR_TEMPERATURE 0x08 - -#define ADDR_CTRL_REG0 0x0D -#define REG0_WRITE_ENABLE 0x10 - -#define ADDR_RESET 0x10 -#define SOFT_RESET 0xB6 - -#define ADDR_BW_TCS 0x20 -#define BW_TCS_BW_MASK (0xf<<4) -#define BW_TCS_BW_10HZ (0<<4) -#define BW_TCS_BW_20HZ (1<<4) -#define BW_TCS_BW_40HZ (2<<4) -#define BW_TCS_BW_75HZ (3<<4) -#define BW_TCS_BW_150HZ (4<<4) -#define BW_TCS_BW_300HZ (5<<4) -#define BW_TCS_BW_600HZ (6<<4) -#define BW_TCS_BW_1200HZ (7<<4) - -#define ADDR_HIGH_DUR 0x27 -#define HIGH_DUR_DIS_I2C (1<<0) - -#define ADDR_TCO_Z 0x30 -#define TCO_Z_MODE_MASK 0x3 - -#define ADDR_GAIN_Y 0x33 -#define GAIN_Y_SHADOW_DIS (1<<0) - -#define ADDR_OFFSET_LSB1 0x35 -#define OFFSET_LSB1_RANGE_MASK (7<<1) -#define OFFSET_LSB1_RANGE_1G (0<<1) -#define OFFSET_LSB1_RANGE_2G (2<<1) -#define OFFSET_LSB1_RANGE_3G (3<<1) -#define OFFSET_LSB1_RANGE_4G (4<<1) -#define OFFSET_LSB1_RANGE_8G (5<<1) -#define OFFSET_LSB1_RANGE_16G (6<<1) - -#define ADDR_OFFSET_T 0x37 -#define OFFSET_T_READOUT_12BIT (1<<0) - -extern "C" { __EXPORT int bma180_main(int argc, char *argv[]); } - -class BMA180 : public device::SPI -{ -public: - BMA180(int bus, spi_dev_e device); - virtual ~BMA180(); - - 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 accel_report *_reports; - - struct accel_scale _accel_scale; - float _accel_range_scale; - float _accel_range_m_s2; - orb_advert_t _accel_topic; - - unsigned _current_lowpass; - 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 BMA180 - * - * @param The register to read. - * @return The value that was read. - */ - uint8_t read_reg(unsigned reg); - - /** - * Write a register in the BMA180 - * - * @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 BMA180 - * - * 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 BMA180 measurement range. - * - * @param max_g The maximum G value the range must support. - * @return OK if the value can be supported, -ERANGE otherwise. - */ - int set_range(unsigned max_g); - - /** - * Set the BMA180 internal lowpass filter frequency. - * - * @param frequency The internal lowpass filter frequency is set to a value - * equal or greater to this. - * Zero selects the highest frequency supported. - * @return OK if the value can be supported. - */ - int set_lowpass(unsigned frequency); -}; - -/* helper macro for handling report buffer indices */ -#define INCREMENT(_x, _lim) do { _x++; if (_x >= _lim) _x = 0; } while(0) - - -BMA180::BMA180(int bus, spi_dev_e device) : - SPI("BMA180", ACCEL_DEVICE_PATH, bus, device, SPIDEV_MODE3, 8000000), - _call_interval(0), - _num_reports(0), - _next_report(0), - _oldest_report(0), - _reports(nullptr), - _accel_range_scale(0.0f), - _accel_range_m_s2(0.0f), - _accel_topic(-1), - _current_lowpass(0), - _current_range(0), - _sample_perf(perf_alloc(PC_ELAPSED, "bma180_read")) -{ - // enable debug() calls - _debug_enabled = true; - - // default scale factors - _accel_scale.x_offset = 0; - _accel_scale.x_scale = 1.0f; - _accel_scale.y_offset = 0; - _accel_scale.y_scale = 1.0f; - _accel_scale.z_offset = 0; - _accel_scale.z_scale = 1.0f; -} - -BMA180::~BMA180() -{ - /* 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 -BMA180::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 accel_report[_num_reports]; - - if (_reports == nullptr) - goto out; - - /* advertise sensor topic */ - memset(&_reports[0], 0, sizeof(_reports[0])); - _accel_topic = orb_advertise(ORB_ID(sensor_accel), &_reports[0]); - - /* perform soft reset (p48) */ - write_reg(ADDR_RESET, SOFT_RESET); - - /* wait 10 ms (datasheet incorrectly lists 10 us on page 49) */ - usleep(10000); - - /* enable writing to chip config */ - modify_reg(ADDR_CTRL_REG0, 0, REG0_WRITE_ENABLE); - - /* disable I2C interface */ - modify_reg(ADDR_HIGH_DUR, HIGH_DUR_DIS_I2C, 0); - - /* switch to low-noise mode */ - modify_reg(ADDR_TCO_Z, TCO_Z_MODE_MASK, 0); - - /* disable 12-bit mode */ - modify_reg(ADDR_OFFSET_T, OFFSET_T_READOUT_12BIT, 0); - - /* disable shadow-disable mode */ - modify_reg(ADDR_GAIN_Y, GAIN_Y_SHADOW_DIS, 0); - - /* disable writing to chip config */ - modify_reg(ADDR_CTRL_REG0, REG0_WRITE_ENABLE, 0); - - if (set_range(4)) warnx("Failed setting range"); - - if (set_lowpass(75)) warnx("Failed setting lowpass"); - - if (read_reg(ADDR_CHIP_ID) == CHIP_ID) { - ret = OK; - - } else { - ret = ERROR; - } - -out: - return ret; -} - -int -BMA180::probe() -{ - /* dummy read to ensure SPI state machine is sane */ - read_reg(ADDR_CHIP_ID); - - if (read_reg(ADDR_CHIP_ID) == CHIP_ID) - return OK; - - return -EIO; -} - -ssize_t -BMA180::read(struct file *filp, char *buffer, size_t buflen) -{ - unsigned count = buflen / sizeof(struct accel_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 -BMA180::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 accel_report *buf = new struct accel_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 ACCELIOCSSAMPLERATE: /* sensor sample rate is not (really) adjustable */ - return -EINVAL; - - case ACCELIOCGSAMPLERATE: - return 1200; /* always operating in low-noise mode */ - - case ACCELIOCSLOWPASS: - return set_lowpass(arg); - - case ACCELIOCGLOWPASS: - return _current_lowpass; - - case ACCELIOCSSCALE: - /* copy scale in */ - memcpy(&_accel_scale, (struct accel_scale *) arg, sizeof(_accel_scale)); - return OK; - - case ACCELIOCGSCALE: - /* copy scale out */ - memcpy((struct accel_scale *) arg, &_accel_scale, sizeof(_accel_scale)); - return OK; - - case ACCELIOCSRANGE: - return set_range(arg); - - case ACCELIOCGRANGE: - return _current_range; - - default: - /* give it to the superclass */ - return SPI::ioctl(filp, cmd, arg); - } -} - -uint8_t -BMA180::read_reg(unsigned reg) -{ - uint8_t cmd[2]; - - cmd[0] = reg | DIR_READ; - - transfer(cmd, cmd, sizeof(cmd)); - - return cmd[1]; -} - -void -BMA180::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 -BMA180::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 -BMA180::set_range(unsigned max_g) -{ - uint8_t rangebits; - - if (max_g == 0) - max_g = 16; - - if (max_g > 16) - return -ERANGE; - - if (max_g <= 2) { - _current_range = 2; - rangebits = OFFSET_LSB1_RANGE_2G; - - } else if (max_g <= 3) { - _current_range = 3; - rangebits = OFFSET_LSB1_RANGE_3G; - - } else if (max_g <= 4) { - _current_range = 4; - rangebits = OFFSET_LSB1_RANGE_4G; - - } else if (max_g <= 8) { - _current_range = 8; - rangebits = OFFSET_LSB1_RANGE_8G; - - } else if (max_g <= 16) { - _current_range = 16; - rangebits = OFFSET_LSB1_RANGE_16G; - - } else { - return -EINVAL; - } - - /* set new range scaling factor */ - _accel_range_m_s2 = _current_range * 9.80665f; - _accel_range_scale = _accel_range_m_s2 / 8192.0f; - - /* enable writing to chip config */ - modify_reg(ADDR_CTRL_REG0, 0, REG0_WRITE_ENABLE); - - /* adjust sensor configuration */ - modify_reg(ADDR_OFFSET_LSB1, OFFSET_LSB1_RANGE_MASK, rangebits); - - /* block writing to chip config */ - modify_reg(ADDR_CTRL_REG0, REG0_WRITE_ENABLE, 0); - - /* check if wanted value is now in register */ - return !((read_reg(ADDR_OFFSET_LSB1) & OFFSET_LSB1_RANGE_MASK) == - (OFFSET_LSB1_RANGE_MASK & rangebits)); -} - -int -BMA180::set_lowpass(unsigned frequency) -{ - uint8_t bwbits; - - if (frequency > 1200) { - return -ERANGE; - - } else if (frequency > 600) { - bwbits = BW_TCS_BW_1200HZ; - - } else if (frequency > 300) { - bwbits = BW_TCS_BW_600HZ; - - } else if (frequency > 150) { - bwbits = BW_TCS_BW_300HZ; - - } else if (frequency > 75) { - bwbits = BW_TCS_BW_150HZ; - - } else if (frequency > 40) { - bwbits = BW_TCS_BW_75HZ; - - } else if (frequency > 20) { - bwbits = BW_TCS_BW_40HZ; - - } else if (frequency > 10) { - bwbits = BW_TCS_BW_20HZ; - - } else { - bwbits = BW_TCS_BW_10HZ; - } - - /* enable writing to chip config */ - modify_reg(ADDR_CTRL_REG0, 0, REG0_WRITE_ENABLE); - - /* adjust sensor configuration */ - modify_reg(ADDR_BW_TCS, BW_TCS_BW_MASK, bwbits); - - /* block writing to chip config */ - modify_reg(ADDR_CTRL_REG0, REG0_WRITE_ENABLE, 0); - - /* check if wanted value is now in register */ - return !((read_reg(ADDR_BW_TCS) & BW_TCS_BW_MASK) == - (BW_TCS_BW_MASK & bwbits)); -} - -void -BMA180::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)&BMA180::measure_trampoline, this); -} - -void -BMA180::stop() -{ - hrt_cancel(&_call); -} - -void -BMA180::measure_trampoline(void *arg) -{ - BMA180 *dev = (BMA180 *)arg; - - /* make another measurement */ - dev->measure(); -} - -void -BMA180::measure() -{ - /* BMA180 measurement registers */ -// #pragma pack(push, 1) -// struct { -// uint8_t cmd; -// int16_t x; -// int16_t y; -// int16_t z; -// } raw_report; -// #pragma pack(pop) - - accel_report *report = &_reports[_next_report]; - - /* start the performance counter */ - perf_begin(_sample_perf); - - /* - * Fetch the full set of measurements from the BMA180 in one pass; - * starting from the X LSB. - */ - //raw_report.cmd = ADDR_ACC_X_LSB; - // XXX PX4DEV transfer((uint8_t *)&raw_report, (uint8_t *)&raw_report, sizeof(raw_report)); - - /* - * Adjust and scale results to SI units. - * - * Note that we ignore the "new data" bits. At any time we read, each - * of the axis measurements are the "most recent", even if we've seen - * them before. There is no good way to synchronise with the internal - * measurement flow without using the external interrupt. - */ - _reports[_next_report].timestamp = hrt_absolute_time(); - /* - * y of board is x of sensor and x of board is -y of sensor - * perform only the axis assignment here. - * Two non-value bits are discarded directly - */ - report->y_raw = read_reg(ADDR_ACC_X_LSB + 0); - report->y_raw |= read_reg(ADDR_ACC_X_LSB + 1) << 8; - report->x_raw = read_reg(ADDR_ACC_X_LSB + 2); - report->x_raw |= read_reg(ADDR_ACC_X_LSB + 3) << 8; - report->z_raw = read_reg(ADDR_ACC_X_LSB + 4); - report->z_raw |= read_reg(ADDR_ACC_X_LSB + 5) << 8; - - /* discard two non-value bits in the 16 bit measurement */ - report->x_raw = (report->x_raw / 4); - report->y_raw = (report->y_raw / 4); - report->z_raw = (report->z_raw / 4); - - /* invert y axis, due to 14 bit data no overflow can occur in the negation */ - report->y_raw = -report->y_raw; - - report->x = ((report->x_raw * _accel_range_scale) - _accel_scale.x_offset) * _accel_scale.x_scale; - report->y = ((report->y_raw * _accel_range_scale) - _accel_scale.y_offset) * _accel_scale.y_scale; - report->z = ((report->z_raw * _accel_range_scale) - _accel_scale.z_offset) * _accel_scale.z_scale; - report->scaling = _accel_range_scale; - report->range_m_s2 = _accel_range_m_s2; - - /* 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_accel), _accel_topic, report); - - /* stop the perf counter */ - perf_end(_sample_perf); -} - -void -BMA180::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 bma180 -{ - -BMA180 *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 BMA180(1 /* XXX magic number */, (spi_dev_e)PX4_SPIDEV_ACCEL); - - 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(ACCEL_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 = -1; - struct accel_report a_report; - ssize_t sz; - - /* get the driver */ - fd = open(ACCEL_DEVICE_PATH, O_RDONLY); - - if (fd < 0) - err(1, "%s open failed (try 'bma180 start' if the driver is not running)", - ACCEL_DEVICE_PATH); - - /* reset to manual polling */ - if (ioctl(fd, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_MANUAL) < 0) - err(1, "reset to manual polling"); - - /* do a simple demand read */ - sz = read(fd, &a_report, sizeof(a_report)); - - if (sz != sizeof(a_report)) - err(1, "immediate acc read failed"); - - warnx("single read"); - warnx("time: %lld", a_report.timestamp); - warnx("acc x: \t%8.4f\tm/s^2", (double)a_report.x); - warnx("acc y: \t%8.4f\tm/s^2", (double)a_report.y); - warnx("acc z: \t%8.4f\tm/s^2", (double)a_report.z); - warnx("acc x: \t%d\traw 0x%0x", (short)a_report.x_raw, (unsigned short)a_report.x_raw); - warnx("acc y: \t%d\traw 0x%0x", (short)a_report.y_raw, (unsigned short)a_report.y_raw); - warnx("acc z: \t%d\traw 0x%0x", (short)a_report.z_raw, (unsigned short)a_report.z_raw); - warnx("acc range: %8.4f m/s^2 (%8.4f g)", (double)a_report.range_m_s2, - (double)(a_report.range_m_s2 / 9.81f)); - - /* XXX add poll-rate tests here too */ - - reset(); - errx(0, "PASS"); -} - -/** - * Reset the driver. - */ -void -reset() -{ - int fd = open(ACCEL_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, "BMA180: driver not running"); - - printf("state @ %p\n", g_dev); - g_dev->print_info(); - - exit(0); -} - - -} // namespace - -int -bma180_main(int argc, char *argv[]) -{ - /* - * Start/load the driver. - - */ - if (!strcmp(argv[1], "start")) - bma180::start(); - - /* - * Test the driver/device. - */ - if (!strcmp(argv[1], "test")) - bma180::test(); - - /* - * Reset the driver. - */ - if (!strcmp(argv[1], "reset")) - bma180::reset(); - - /* - * Print driver information. - */ - if (!strcmp(argv[1], "info")) - bma180::info(); - - errx(1, "unrecognised command, try 'start', 'test', 'reset' or 'info'"); -} |