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author | Lorenz Meier <lm@inf.ethz.ch> | 2013-08-05 20:11:44 +0200 |
---|---|---|
committer | Lorenz Meier <lm@inf.ethz.ch> | 2013-08-05 20:11:44 +0200 |
commit | 86e5d39b89a95ba81cfbbadc22a5ebc03f068509 (patch) | |
tree | db65deb9e716dee3272c8d045ca9d8567d70e23a /src | |
parent | cac4a6f5789ce4fff8ba0f697777b6d59e0fb068 (diff) | |
parent | 901a9c3e35456445465e7008d3c69b0bd3481e9e (diff) | |
download | px4-firmware-86e5d39b89a95ba81cfbbadc22a5ebc03f068509.tar.gz px4-firmware-86e5d39b89a95ba81cfbbadc22a5ebc03f068509.tar.bz2 px4-firmware-86e5d39b89a95ba81cfbbadc22a5ebc03f068509.zip |
Merge branch 'master' of github.com:PX4/Firmware into mpu6k_queue
Diffstat (limited to 'src')
-rw-r--r-- | src/drivers/device/cdev.cpp | 16 | ||||
-rw-r--r-- | src/drivers/device/device.cpp | 19 | ||||
-rw-r--r-- | src/drivers/device/device.h | 70 | ||||
-rw-r--r-- | src/drivers/device/i2c.h | 14 | ||||
-rw-r--r-- | src/drivers/device/spi.h | 2 | ||||
-rw-r--r-- | src/drivers/meas_airspeed/meas_airspeed.cpp | 34 | ||||
-rw-r--r-- | src/drivers/stm32/drv_pwm_servo.c | 6 | ||||
-rw-r--r-- | src/modules/systemlib/hx_stream.c | 185 | ||||
-rw-r--r-- | src/modules/systemlib/hx_stream.h | 42 | ||||
-rw-r--r-- | src/modules/systemlib/perf_counter.c | 41 | ||||
-rw-r--r-- | src/modules/systemlib/perf_counter.h | 14 |
11 files changed, 329 insertions, 114 deletions
diff --git a/src/drivers/device/cdev.cpp b/src/drivers/device/cdev.cpp index 422321850..47ebcd40a 100644 --- a/src/drivers/device/cdev.cpp +++ b/src/drivers/device/cdev.cpp @@ -111,21 +111,21 @@ CDev::~CDev() int CDev::init() { - int ret = OK; - // base class init first - ret = Device::init(); + int ret = Device::init(); if (ret != OK) goto out; // now register the driver - ret = register_driver(_devname, &fops, 0666, (void *)this); + if (_devname != nullptr) { + ret = register_driver(_devname, &fops, 0666, (void *)this); - if (ret != OK) - goto out; + if (ret != OK) + goto out; - _registered = true; + _registered = true; + } out: return ret; @@ -395,4 +395,4 @@ cdev_poll(struct file *filp, struct pollfd *fds, bool setup) return cdev->poll(filp, fds, setup); } -} // namespace device
\ No newline at end of file +} // namespace device diff --git a/src/drivers/device/device.cpp b/src/drivers/device/device.cpp index 04a5222c3..c3ee77b1c 100644 --- a/src/drivers/device/device.cpp +++ b/src/drivers/device/device.cpp @@ -223,5 +223,22 @@ interrupt(int irq, void *context) return OK; } +int +Device::read(unsigned offset, void *data, unsigned count) +{ + return -ENODEV; +} + +int +Device::write(unsigned offset, void *data, unsigned count) +{ + return -ENODEV; +} + +int +Device::ioctl(unsigned operation, unsigned &arg) +{ + return -ENODEV; +} -} // namespace device
\ No newline at end of file +} // namespace device diff --git a/src/drivers/device/device.h b/src/drivers/device/device.h index 7d375aab9..a9ed5d77c 100644 --- a/src/drivers/device/device.h +++ b/src/drivers/device/device.h @@ -69,10 +69,61 @@ class __EXPORT Device { public: /** + * Destructor. + * + * Public so that anonymous devices can be destroyed. + */ + virtual ~Device(); + + /** * Interrupt handler. */ virtual void interrupt(void *ctx); /**< interrupt handler */ + /* + * Direct access methods. + */ + + /** + * Initialise the driver and make it ready for use. + * + * @return OK if the driver initialized OK, negative errno otherwise; + */ + virtual int init(); + + /** + * Read directly from the device. + * + * The actual size of each unit quantity is device-specific. + * + * @param offset The device address at which to start reading + * @param data The buffer into which the read values should be placed. + * @param count The number of items to read. + * @return The number of items read on success, negative errno otherwise. + */ + virtual int read(unsigned address, void *data, unsigned count); + + /** + * Write directly to the device. + * + * The actual size of each unit quantity is device-specific. + * + * @param address The device address at which to start writing. + * @param data The buffer from which values should be read. + * @param count The number of items to write. + * @return The number of items written on success, negative errno otherwise. + */ + virtual int write(unsigned address, void *data, unsigned count); + + /** + * Perform a device-specific operation. + * + * @param operation The operation to perform. + * @param arg An argument to the operation. + * @return Negative errno on error, OK or positive value on success. + */ + virtual int ioctl(unsigned operation, unsigned &arg); + protected: const char *_name; /**< driver name */ bool _debug_enabled; /**< if true, debug messages are printed */ @@ -85,14 +136,6 @@ protected: */ Device(const char *name, int irq = 0); - ~Device(); - - /** - * Initialise the driver and make it ready for use. - * - * @return OK if the driver initialised OK. - */ - virtual int init(); /** * Enable the device interrupt @@ -189,7 +232,7 @@ public: /** * Destructor */ - ~CDev(); + virtual ~CDev(); virtual int init(); @@ -282,6 +325,7 @@ public: * Test whether the device is currently open. * * This can be used to avoid tearing down a device that is still active. + * Note - not virtual, cannot be overridden by a subclass. * * @return True if the device is currently open. */ @@ -396,9 +440,9 @@ public: const char *devname, uint32_t base, int irq = 0); - ~PIO(); + virtual ~PIO(); - int init(); + virtual int init(); protected: @@ -407,7 +451,7 @@ protected: * * @param offset Register offset in bytes from the base address. */ - uint32_t reg(uint32_t offset) { + uint32_t reg(uint32_t offset) { return *(volatile uint32_t *)(_base + offset); } @@ -444,4 +488,4 @@ private: } // namespace device -#endif /* _DEVICE_DEVICE_H */
\ No newline at end of file +#endif /* _DEVICE_DEVICE_H */ diff --git a/src/drivers/device/i2c.h b/src/drivers/device/i2c.h index b4a9cdd53..549879352 100644 --- a/src/drivers/device/i2c.h +++ b/src/drivers/device/i2c.h @@ -55,13 +55,11 @@ class __EXPORT I2C : public CDev public: - /** - * Get the address - */ - uint16_t get_address() { - return _address; - } - + /** + * Get the address + */ + int16_t get_address() { return _address; } + protected: /** * The number of times a read or write operation will be retried on @@ -90,7 +88,7 @@ protected: uint16_t address, uint32_t frequency, int irq = 0); - ~I2C(); + virtual ~I2C(); virtual int init(); diff --git a/src/drivers/device/spi.h b/src/drivers/device/spi.h index d2d01efb3..e0122372a 100644 --- a/src/drivers/device/spi.h +++ b/src/drivers/device/spi.h @@ -71,7 +71,7 @@ protected: enum spi_mode_e mode, uint32_t frequency, int irq = 0); - ~SPI(); + virtual ~SPI(); virtual int init(); diff --git a/src/drivers/meas_airspeed/meas_airspeed.cpp b/src/drivers/meas_airspeed/meas_airspeed.cpp index 7a2e22c01..ebae21cf7 100644 --- a/src/drivers/meas_airspeed/meas_airspeed.cpp +++ b/src/drivers/meas_airspeed/meas_airspeed.cpp @@ -34,6 +34,7 @@ /** * @file meas_airspeed.cpp * @author Lorenz Meier + * @author Sarthak Kaingade * @author Simon Wilks * * Driver for the MEAS Spec series connected via I2C. @@ -92,9 +93,6 @@ /* Register address */ #define ADDR_READ_MR 0x00 /* write to this address to start conversion */ -#define ADDR_READ_DF2 0x00 /* read from this address to read pressure only */ -#define ADDR_READ_DF3 0x01 -#define ADDR_READ_DF4 0x02 /* read from this address to read pressure and temp */ /* Measurement rate is 100Hz */ #define CONVERSION_INTERVAL (1000000 / 100) /* microseconds */ @@ -122,7 +120,7 @@ protected: extern "C" __EXPORT int meas_airspeed_main(int argc, char *argv[]); MEASAirspeed::MEASAirspeed(int bus, int address) : Airspeed(bus, address, - CONVERSION_INTERVAL) + CONVERSION_INTERVAL) { } @@ -160,7 +158,7 @@ MEASAirspeed::collect() perf_begin(_sample_perf); - ret = transfer(nullptr, 0, &val[0], 2); + ret = transfer(nullptr, 0, &val[0], 4); if (ret < 0) { log("error reading from sensor: %d", ret); @@ -171,25 +169,37 @@ MEASAirspeed::collect() if (status == 2) { log("err: stale data"); + } else if (status == 3) { log("err: fault"); } - uint16_t diff_pres_pa = (val[1]) | ((val[0] & ~(0xC0)) << 8); + //uint16_t diff_pres_pa = (val[1]) | ((val[0] & ~(0xC0)) << 8); uint16_t temp = (val[3] & 0xE0) << 8 | val[2]; - diff_pres_pa = abs(diff_pres_pa - (16384 / 2.0f)); - diff_pres_pa -= _diff_pres_offset; + // XXX leaving this in until new calculation method has been cross-checked + //diff_pres_pa = abs(diff_pres_pa - (16384 / 2.0f)); + //diff_pres_pa -= _diff_pres_offset; + int16_t dp_raw = 0, dT_raw = 0; + dp_raw = (val[0] << 8) + val[1]; + dp_raw = 0x3FFF & dp_raw; + dT_raw = (val[2] << 8) + val[3]; + dT_raw = (0xFFE0 & dT_raw) >> 5; + float temperature = ((200 * dT_raw) / 2047) - 50; // XXX we may want to smooth out the readings to remove noise. + // Calculate differential pressure. As its centered around 8000 + // and can go positive or negative, enforce absolute value + uint16_t diff_press_pa = abs(dp_raw - (16384 / 2.0f)); + _reports[_next_report].timestamp = hrt_absolute_time(); - _reports[_next_report].temperature = temp; - _reports[_next_report].differential_pressure_pa = diff_pres_pa; + _reports[_next_report].temperature = temperature; + _reports[_next_report].differential_pressure_pa = diff_press_pa; // Track maximum differential pressure measured (so we can work out top speed). - if (diff_pres_pa > _reports[_next_report].max_differential_pressure_pa) { - _reports[_next_report].max_differential_pressure_pa = diff_pres_pa; + if (diff_press_pa > _reports[_next_report].max_differential_pressure_pa) { + _reports[_next_report].max_differential_pressure_pa = diff_press_pa; } /* announce the airspeed if needed, just publish else */ diff --git a/src/drivers/stm32/drv_pwm_servo.c b/src/drivers/stm32/drv_pwm_servo.c index 7b060412c..dbb45a138 100644 --- a/src/drivers/stm32/drv_pwm_servo.c +++ b/src/drivers/stm32/drv_pwm_servo.c @@ -88,6 +88,7 @@ #define rCCR4(_tmr) REG(_tmr, STM32_GTIM_CCR4_OFFSET) #define rDCR(_tmr) REG(_tmr, STM32_GTIM_DCR_OFFSET) #define rDMAR(_tmr) REG(_tmr, STM32_GTIM_DMAR_OFFSET) +#define rBDTR(_tmr) REG(_tmr, STM32_ATIM_BDTR_OFFSET) static void pwm_timer_init(unsigned timer); static void pwm_timer_set_rate(unsigned timer, unsigned rate); @@ -110,6 +111,11 @@ pwm_timer_init(unsigned timer) rCCER(timer) = 0; rDCR(timer) = 0; + if ((pwm_timers[timer].base == STM32_TIM1_BASE) || (pwm_timers[timer].base == STM32_TIM8_BASE)) { + /* master output enable = on */ + rBDTR(timer) = ATIM_BDTR_MOE; + } + /* configure the timer to free-run at 1MHz */ rPSC(timer) = (pwm_timers[timer].clock_freq / 1000000) - 1; diff --git a/src/modules/systemlib/hx_stream.c b/src/modules/systemlib/hx_stream.c index 8d77f14a8..8e9c2bfcf 100644 --- a/src/modules/systemlib/hx_stream.c +++ b/src/modules/systemlib/hx_stream.c @@ -53,14 +53,26 @@ struct hx_stream { - uint8_t buf[HX_STREAM_MAX_FRAME + 4]; - unsigned frame_bytes; - bool escaped; - bool txerror; - + /* RX state */ + uint8_t rx_buf[HX_STREAM_MAX_FRAME + 4]; + unsigned rx_frame_bytes; + bool rx_escaped; + hx_stream_rx_callback rx_callback; + void *rx_callback_arg; + + /* TX state */ int fd; - hx_stream_rx_callback callback; - void *callback_arg; + bool tx_error; + uint8_t *tx_buf; + unsigned tx_resid; + uint32_t tx_crc; + enum { + TX_IDLE = 0, + TX_SEND_START, + TX_SEND_DATA, + TX_SENT_ESCAPE, + TX_SEND_END + } tx_state; perf_counter_t pc_tx_frames; perf_counter_t pc_rx_frames; @@ -81,21 +93,7 @@ static void hx_tx_raw(hx_stream_t stream, uint8_t c) { if (write(stream->fd, &c, 1) != 1) - stream->txerror = true; -} - -static void -hx_tx_byte(hx_stream_t stream, uint8_t c) -{ - switch (c) { - case FBO: - case CEO: - hx_tx_raw(stream, CEO); - c ^= 0x20; - break; - } - - hx_tx_raw(stream, c); + stream->tx_error = true; } static int @@ -105,11 +103,11 @@ hx_rx_frame(hx_stream_t stream) uint8_t b[4]; uint32_t w; } u; - unsigned length = stream->frame_bytes; + unsigned length = stream->rx_frame_bytes; /* reset the stream */ - stream->frame_bytes = 0; - stream->escaped = false; + stream->rx_frame_bytes = 0; + stream->rx_escaped = false; /* not a real frame - too short */ if (length < 4) { @@ -122,11 +120,11 @@ hx_rx_frame(hx_stream_t stream) length -= 4; /* compute expected CRC */ - u.w = crc32(&stream->buf[0], length); + u.w = crc32(&stream->rx_buf[0], length); /* compare computed and actual CRC */ for (unsigned i = 0; i < 4; i++) { - if (u.b[i] != stream->buf[length + i]) { + if (u.b[i] != stream->rx_buf[length + i]) { perf_count(stream->pc_rx_errors); return 0; } @@ -134,7 +132,7 @@ hx_rx_frame(hx_stream_t stream) /* frame is good */ perf_count(stream->pc_rx_frames); - stream->callback(stream->callback_arg, &stream->buf[0], length); + stream->rx_callback(stream->rx_callback_arg, &stream->rx_buf[0], length); return 1; } @@ -150,8 +148,8 @@ hx_stream_init(int fd, if (stream != NULL) { memset(stream, 0, sizeof(struct hx_stream)); stream->fd = fd; - stream->callback = callback; - stream->callback_arg = arg; + stream->rx_callback = callback; + stream->rx_callback_arg = arg; } return stream; @@ -179,49 +177,112 @@ hx_stream_set_counters(hx_stream_t stream, stream->pc_rx_errors = rx_errors; } +void +hx_stream_reset(hx_stream_t stream) +{ + stream->rx_frame_bytes = 0; + stream->rx_escaped = false; + + stream->tx_buf = NULL; + stream->tx_resid = 0; + stream->tx_state = TX_IDLE; +} + int -hx_stream_send(hx_stream_t stream, +hx_stream_start(hx_stream_t stream, const void *data, size_t count) { - union { - uint8_t b[4]; - uint32_t w; - } u; - const uint8_t *p = (const uint8_t *)data; - unsigned resid = count; - - if (resid > HX_STREAM_MAX_FRAME) + if (count > HX_STREAM_MAX_FRAME) return -EINVAL; - /* start the frame */ - hx_tx_raw(stream, FBO); + stream->tx_buf = data; + stream->tx_resid = count; + stream->tx_state = TX_SEND_START; + stream->tx_crc = crc32(data, count); + return OK; +} + +int +hx_stream_send_next(hx_stream_t stream) +{ + int c; + + /* sort out what we're going to send */ + switch (stream->tx_state) { - /* transmit the data */ - while (resid--) - hx_tx_byte(stream, *p++); + case TX_SEND_START: + stream->tx_state = TX_SEND_DATA; + return FBO; - /* compute the CRC */ - u.w = crc32(data, count); + case TX_SEND_DATA: + c = *stream->tx_buf; - /* send the CRC */ - p = &u.b[0]; - resid = 4; + switch (c) { + case FBO: + case CEO: + stream->tx_state = TX_SENT_ESCAPE; + return CEO; + } + break; + + case TX_SENT_ESCAPE: + c = *stream->tx_buf ^ 0x20; + stream->tx_state = TX_SEND_DATA; + break; + + case TX_SEND_END: + stream->tx_state = TX_IDLE; + return FBO; + + case TX_IDLE: + default: + return -1; + } + + /* if we are here, we have consumed a byte from the buffer */ + stream->tx_resid--; + stream->tx_buf++; + + /* buffer exhausted */ + if (stream->tx_resid == 0) { + uint8_t *pcrc = (uint8_t *)&stream->tx_crc; + + /* was the buffer the frame CRC? */ + if (stream->tx_buf == (pcrc + sizeof(stream->tx_crc))) { + stream->tx_state = TX_SEND_END; + } else { + /* no, it was the payload - switch to sending the CRC */ + stream->tx_buf = pcrc; + stream->tx_resid = sizeof(stream->tx_crc); + } + } + return c; +} + +int +hx_stream_send(hx_stream_t stream, + const void *data, + size_t count) +{ + int result; - while (resid--) - hx_tx_byte(stream, *p++); + result = hx_stream_start(stream, data, count); + if (result != OK) + return result; - /* and the trailing frame separator */ - hx_tx_raw(stream, FBO); + int c; + while ((c = hx_stream_send_next(stream)) >= 0) + hx_tx_raw(stream, c); /* check for transmit error */ - if (stream->txerror) { - stream->txerror = false; + if (stream->tx_error) { + stream->tx_error = false; return -EIO; } perf_count(stream->pc_tx_frames); - return 0; + return OK; } void @@ -234,17 +295,17 @@ hx_stream_rx(hx_stream_t stream, uint8_t c) } /* escaped? */ - if (stream->escaped) { - stream->escaped = false; + if (stream->rx_escaped) { + stream->rx_escaped = false; c ^= 0x20; } else if (c == CEO) { - /* now escaped, ignore the byte */ - stream->escaped = true; + /* now rx_escaped, ignore the byte */ + stream->rx_escaped = true; return; } /* save for later */ - if (stream->frame_bytes < sizeof(stream->buf)) - stream->buf[stream->frame_bytes++] = c; + if (stream->rx_frame_bytes < sizeof(stream->rx_buf)) + stream->rx_buf[stream->rx_frame_bytes++] = c; } diff --git a/src/modules/systemlib/hx_stream.h b/src/modules/systemlib/hx_stream.h index 128689953..1f3927222 100644 --- a/src/modules/systemlib/hx_stream.h +++ b/src/modules/systemlib/hx_stream.h @@ -58,7 +58,8 @@ __BEGIN_DECLS * Allocate a new hx_stream object. * * @param fd The file handle over which the protocol will - * communicate. + * communicate, or -1 if the protocol will use + * hx_stream_start/hx_stream_send_next. * @param callback Called when a frame is received. * @param callback_arg Passed to the callback. * @return A handle to the stream, or NULL if memory could @@ -80,6 +81,7 @@ __EXPORT extern void hx_stream_free(hx_stream_t stream); * * Any counter may be set to NULL to disable counting that datum. * + * @param stream A handle returned from hx_stream_init. * @param tx_frames Counter for transmitted frames. * @param rx_frames Counter for received frames. * @param rx_errors Counter for short and corrupt received frames. @@ -90,6 +92,44 @@ __EXPORT extern void hx_stream_set_counters(hx_stream_t stream, perf_counter_t rx_errors); /** + * Reset a stream. + * + * Forces the local stream state to idle. + * + * @param stream A handle returned from hx_stream_init. + */ +__EXPORT extern void hx_stream_reset(hx_stream_t stream); + +/** + * Prepare to send a frame. + * + * Use this in conjunction with hx_stream_send_next to + * set the frame to be transmitted. + * + * Use hx_stream_send() to write to the stream fd directly. + * + * @param stream A handle returned from hx_stream_init. + * @param data Pointer to the data to send. + * @param count The number of bytes to send. + * @return Zero on success, -errno on error. + */ +__EXPORT extern int hx_stream_start(hx_stream_t stream, + const void *data, + size_t count); + +/** + * Get the next byte to send for a stream. + * + * This requires that the stream be prepared for sending by + * calling hx_stream_start first. + * + * @param stream A handle returned from hx_stream_init. + * @return The byte to send, or -1 if there is + * nothing left to send. + */ +__EXPORT extern int hx_stream_send_next(hx_stream_t stream); + +/** * Send a frame. * * This function will block until all frame bytes are sent if diff --git a/src/modules/systemlib/perf_counter.c b/src/modules/systemlib/perf_counter.c index 879f4715a..3c1e10287 100644 --- a/src/modules/systemlib/perf_counter.c +++ b/src/modules/systemlib/perf_counter.c @@ -201,23 +201,50 @@ perf_end(perf_counter_t handle) switch (handle->type) { case PC_ELAPSED: { struct perf_ctr_elapsed *pce = (struct perf_ctr_elapsed *)handle; - hrt_abstime elapsed = hrt_absolute_time() - pce->time_start; - pce->event_count++; - pce->time_total += elapsed; + if (pce->time_start != 0) { + hrt_abstime elapsed = hrt_absolute_time() - pce->time_start; - if ((pce->time_least > elapsed) || (pce->time_least == 0)) - pce->time_least = elapsed; + pce->event_count++; + pce->time_total += elapsed; - if (pce->time_most < elapsed) - pce->time_most = elapsed; + if ((pce->time_least > elapsed) || (pce->time_least == 0)) + pce->time_least = elapsed; + + if (pce->time_most < elapsed) + pce->time_most = elapsed; + + pce->time_start = 0; + } + } + break; + + default: + break; + } +} + +void +perf_cancel(perf_counter_t handle) +{ + if (handle == NULL) + return; + + switch (handle->type) { + case PC_ELAPSED: { + struct perf_ctr_elapsed *pce = (struct perf_ctr_elapsed *)handle; + + pce->time_start = 0; } + break; default: break; } } + + void perf_reset(perf_counter_t handle) { diff --git a/src/modules/systemlib/perf_counter.h b/src/modules/systemlib/perf_counter.h index 5c2cb15b2..4cd8b67a1 100644 --- a/src/modules/systemlib/perf_counter.h +++ b/src/modules/systemlib/perf_counter.h @@ -92,13 +92,25 @@ __EXPORT extern void perf_begin(perf_counter_t handle); * End a performance event. * * This call applies to counters that operate over ranges of time; PC_ELAPSED etc. + * If a call is made without a corresopnding perf_begin call, or if perf_cancel + * has been called subsequently, no change is made to the counter. * * @param handle The handle returned from perf_alloc. */ __EXPORT extern void perf_end(perf_counter_t handle); /** - * Reset a performance event. + * Cancel a performance event. + * + * This call applies to counters that operate over ranges of time; PC_ELAPSED etc. + * It reverts the effect of a previous perf_begin. + * + * @param handle The handle returned from perf_alloc. + */ +__EXPORT extern void perf_cancel(perf_counter_t handle); + +/** + * Reset a performance counter. * * This call resets performance counter to initial state * |