From b55403c551070d681b9b438a0b52deb5832adc8f Mon Sep 17 00:00:00 2001 From: Andrew Tridgell Date: Sat, 7 Dec 2013 22:45:39 +1100 Subject: mpu6000: use register_class_devname() --- src/drivers/mpu6000/mpu6000.cpp | 114 +++++++++++++++++++++++++--------------- 1 file changed, 71 insertions(+), 43 deletions(-) (limited to 'src/drivers') diff --git a/src/drivers/mpu6000/mpu6000.cpp b/src/drivers/mpu6000/mpu6000.cpp index ce0010752..6145a5117 100644 --- a/src/drivers/mpu6000/mpu6000.cpp +++ b/src/drivers/mpu6000/mpu6000.cpp @@ -211,16 +211,17 @@ private: float _accel_range_scale; float _accel_range_m_s2; orb_advert_t _accel_topic; + int _accel_class_instance; RingBuffer *_gyro_reports; struct gyro_scale _gyro_scale; float _gyro_range_scale; float _gyro_range_rad_s; - orb_advert_t _gyro_topic; - unsigned _reads; unsigned _sample_rate; + perf_counter_t _accel_reads; + perf_counter_t _gyro_reads; perf_counter_t _sample_perf; math::LowPassFilter2p _accel_filter_x; @@ -349,12 +350,17 @@ public: virtual ssize_t read(struct file *filp, char *buffer, size_t buflen); virtual int ioctl(struct file *filp, int cmd, unsigned long arg); + virtual int init(); + protected: friend class MPU6000; void parent_poll_notify(); + private: MPU6000 *_parent; + orb_advert_t _gyro_topic; + int _gyro_class_instance; }; @@ -370,12 +376,13 @@ MPU6000::MPU6000(int bus, spi_dev_e device) : _accel_range_scale(0.0f), _accel_range_m_s2(0.0f), _accel_topic(-1), + _accel_class_instance(-1), _gyro_reports(nullptr), _gyro_range_scale(0.0f), _gyro_range_rad_s(0.0f), - _gyro_topic(-1), - _reads(0), _sample_rate(1000), + _accel_reads(perf_alloc(PC_COUNT, "mpu6000_accel_read")), + _gyro_reads(perf_alloc(PC_COUNT, "mpu6000_gyro_read")), _sample_perf(perf_alloc(PC_ELAPSED, "mpu6000_read")), _accel_filter_x(MPU6000_ACCEL_DEFAULT_RATE, MPU6000_ACCEL_DEFAULT_DRIVER_FILTER_FREQ), _accel_filter_y(MPU6000_ACCEL_DEFAULT_RATE, MPU6000_ACCEL_DEFAULT_DRIVER_FILTER_FREQ), @@ -420,8 +427,13 @@ MPU6000::~MPU6000() if (_gyro_reports != nullptr) delete _gyro_reports; + if (_accel_class_instance != -1) + unregister_class_devname(ACCEL_DEVICE_PATH, _accel_class_instance); + /* delete the perf counter */ perf_free(_sample_perf); + perf_free(_accel_reads); + perf_free(_gyro_reads); } int @@ -466,38 +478,23 @@ MPU6000::init() _gyro_scale.z_scale = 1.0f; /* do CDev init for the gyro device node, keep it optional */ - gyro_ret = _gyro->init(); + ret = _gyro->init(); + /* if probe/setup failed, bail now */ + if (ret != OK) { + debug("gyro init failed"); + return ret; + } /* fetch an initial set of measurements for advertisement */ measure(); - /* try to claim the generic accel node as well - it's OK if we fail at this */ - ret = register_driver(ACCEL_DEVICE_PATH, &fops, 0666, (void *)this); - - if (ret == OK) { - log("default accel device"); - } - - /* try to claim the generic accel node as well - it's OK if we fail at this */ - ret = register_driver(GYRO_DEVICE_PATH, &fops, 0666, (void *)this); - - if (ret == OK) { - log("default gyro device"); - } - - if (gyro_ret != OK) { - _gyro_topic = -1; - } else { - gyro_report gr; - _gyro_reports->get(&gr); - - _gyro_topic = orb_advertise(ORB_ID(sensor_gyro), &gr); - } - - /* advertise accel topic */ - accel_report ar; - _accel_reports->get(&ar); - _accel_topic = orb_advertise(ORB_ID(sensor_accel), &ar); + _accel_class_instance = register_class_devname(ACCEL_DEVICE_PATH); + if (_accel_class_instance == CLASS_DEVICE_PRIMARY) { + /* advertise accel topic */ + accel_report ar; + _accel_reports->get(&ar); + _accel_topic = orb_advertise(ORB_ID(sensor_accel), &ar); + } out: return ret; @@ -677,6 +674,8 @@ MPU6000::read(struct file *filp, char *buffer, size_t buflen) if (_accel_reports->empty()) return -EAGAIN; + perf_count(_accel_reads); + /* copy reports out of our buffer to the caller */ accel_report *arp = reinterpret_cast(buffer); int transferred = 0; @@ -694,12 +693,12 @@ MPU6000::read(struct file *filp, char *buffer, size_t buflen) int MPU6000::self_test() { - if (_reads == 0) { + if (perf_event_count(_sample_perf) == 0) { measure(); } /* return 0 on success, 1 else */ - return (_reads > 0) ? 0 : 1; + return (perf_event_count(_sample_perf) > 0) ? 0 : 1; } int @@ -771,6 +770,8 @@ MPU6000::gyro_read(struct file *filp, char *buffer, size_t buflen) if (_gyro_reports->empty()) return -EAGAIN; + perf_count(_gyro_reads); + /* copy reports out of our buffer to the caller */ gyro_report *grp = reinterpret_cast(buffer); int transferred = 0; @@ -1180,9 +1181,6 @@ MPU6000::measure() if (OK != transfer((uint8_t *)&mpu_report, ((uint8_t *)&mpu_report), sizeof(mpu_report))) return; - /* count measurement */ - _reads++; - /* * Convert from big to little endian */ @@ -1287,10 +1285,11 @@ MPU6000::measure() poll_notify(POLLIN); _gyro->parent_poll_notify(); - /* and publish for subscribers */ - orb_publish(ORB_ID(sensor_accel), _accel_topic, &arb); - if (_gyro_topic != -1) { - orb_publish(ORB_ID(sensor_gyro), _gyro_topic, &grb); + if (_accel_topic != -1) { + orb_publish(ORB_ID(sensor_accel), _accel_topic, &arb); + } + if (_gyro->_gyro_topic != -1) { + orb_publish(ORB_ID(sensor_gyro), _gyro->_gyro_topic, &grb); } /* stop measuring */ @@ -1301,19 +1300,48 @@ void MPU6000::print_info() { perf_print_counter(_sample_perf); - printf("reads: %u\n", _reads); + perf_print_counter(_accel_reads); + perf_print_counter(_gyro_reads); _accel_reports->print_info("accel queue"); _gyro_reports->print_info("gyro queue"); } MPU6000_gyro::MPU6000_gyro(MPU6000 *parent) : CDev("MPU6000_gyro", MPU_DEVICE_PATH_GYRO), - _parent(parent) + _parent(parent), + _gyro_class_instance(-1) { } MPU6000_gyro::~MPU6000_gyro() { + if (_gyro_class_instance != -1) + unregister_class_devname(GYRO_DEVICE_PATH, _gyro_class_instance); +} + +int +MPU6000_gyro::init() +{ + int ret; + + // do base class init + ret = CDev::init(); + + /* if probe/setup failed, bail now */ + if (ret != OK) { + debug("gyro init failed"); + return ret; + } + + _gyro_class_instance = register_class_devname(GYRO_DEVICE_PATH); + if (_gyro_class_instance == CLASS_DEVICE_PRIMARY) { + gyro_report gr; + memset(&gr, 0, sizeof(gr)); + _gyro_topic = orb_advertise(ORB_ID(sensor_gyro), &gr); + } + +out: + return ret; } void -- cgit v1.2.3