determine retransmitting calibration, home location and such.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1755 ebee16cc-31ac-478f-84a7-5cbb03baadba
Way too much was being exposed in the API for the
HMC5843. This commit properly hides internal
details of the driver.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1629 ebee16cc-31ac-478f-84a7-5cbb03baadba
The DRDY signal from the magnetometer is connected to PB8
on the STM32. This pin is now configured as an external
interrupt and is now used to signal when new data is
available from the magnetometer.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1628 ebee16cc-31ac-478f-84a7-5cbb03baadba
I2C bus errors are now recoverable. The bus is properly reset
and an error indication is now provided to the caller whenever
a bus error occurs during processing of the transaction list.
For now, the users of the I2C layer just retry infinitely on
failure. The BMP085 and HMC5843 code should be changed to
report errors to its callers to allow a more sensible retry
strategy.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1625 ebee16cc-31ac-478f-84a7-5cbb03baadba
The info field in the pios_i2c_txn list can now be used
to provide a const string which describes the context
for this transaction.
This is very helpful when diagnosing an error that occurs
somewhere in the middle of the I2C FSM since the FSM runs
primarily in the ISR where the original context for the
transactions is no longer available in the traceback.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1622 ebee16cc-31ac-478f-84a7-5cbb03baadba
Implement low-level utility functions for sending/receiving
the opahrs proto v0 (bootloader) messages. These are used
by the OP firmware loader and the AHRS bootloader.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1586 ebee16cc-31ac-478f-84a7-5cbb03baadba
Some functions were returning -1 instead of one of the
valud enum values.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1585 ebee16cc-31ac-478f-84a7-5cbb03baadba
This cleans up some of the boiler plate code that is
repeasted for simple (empty) requests that expect a
response.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1584 ebee16cc-31ac-478f-84a7-5cbb03baadba
The number of retries and delay between retries was
increased in a previous commit. This doesn't appear
to be necessary so I'm reverting the increases.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1432 ebee16cc-31ac-478f-84a7-5cbb03baadba
No need to have boolean flags being floats.
Some of the attitude message was being populated twice.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1428 ebee16cc-31ac-478f-84a7-5cbb03baadba
Issues have been reported with CRC errors
on the SPI link between the OP and AHRS
boards. Slowing the link down eliminates
the errors in my testing.
If we speed this link back up in the future,
further investigation will be required to
diagnose the source of the CRC errors.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1356 ebee16cc-31ac-478f-84a7-5cbb03baadba
This file had mixed line endings. Now they're all the same.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1353 ebee16cc-31ac-478f-84a7-5cbb03baadba
This is to align the object names to matches the UAVObject
architecture doc. No functional changes.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1351 ebee16cc-31ac-478f-84a7-5cbb03baadba
into NED reference frame and used in the INSGPS algorithm, although currently this
information isn't propagated back to OP. Data structures related to the GPS position
into the algorithm and the position estimate out will likely be in flux.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1334 ebee16cc-31ac-478f-84a7-5cbb03baadba
Altitude/pressure sensor data is sent to the AHRS whenever
the AltitudeActual object is updated.
Altitude, Pressure and Temperature are sent as floats.
Same as in the UAVObject that goes to the GCS.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1291 ebee16cc-31ac-478f-84a7-5cbb03baadba
The STM32 I2C block has a number of errata associated with it.
These errata are primarily related to timing sensitivities between
the peripheral and the interrupt handler. In particular, the
correct generation of the stop bit relies on the I2C IRQ running
immediately and not being held off for any reason.
NOTE: The I2C interrupts must be the highest priority IRQs in the
system to ensure correct operation.
I2C protocol is now implemented as a formal state machine.
See: stm32_i2c_fsm.{dot,jpg} for FSM description.
I2C init is now expressed by const initializers in pios_board.c
for both OP and AHRS boards.
I2C device drivers (ie. bmp085/hmc5843) now pass in const arrays
of an unlimited number of bus transfers to be done atomically.
The I2C adapter driver now handles all bus-level locking across the
list of transactions. Generation of start/restart/stop conditions
are handled automatically over the list of transactions.
Timeouts have been removed from the API for now. May be added
back later.
This driver has run error free on both the OP and AHRS boards for
up to 48hrs but it still sometimes fails earlier than that on the OP
board. There is another possible set of improvements to the driver
that could employ the DMA engine for transfers of >= 2bytes. This
change would reduce the timing sensitivities between the peripheral
and the driver but unfortunately, both the SPI and I2C interfaces
share the DMA1 engine. That means only one of these two peripherals
can use the DMA engine and right now, SPI between OP and AHRS is
already using it.
Failures are currently fatal and will lock up the CPU. This allows
useful information to be obtained in the failure cases.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1241 ebee16cc-31ac-478f-84a7-5cbb03baadba
The AHRS comms module now sync's with the AHRS and
exchanges interesting data periodically. Whenever
the link to the AHRS is down, the AHRSComms alarm is
raised.
This is fairly basic for now but provides the last
piece of the infrastructure to move data back/forth
between the OP and the AHRS.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1014 ebee16cc-31ac-478f-84a7-5cbb03baadba
This defines the SPI message format as well as a few
initial messages for moving data across the link.
The v0 messages are place holders for firmware download
in the bootloader.
The v1 messages are to be used by the main application.
Note: This is not the final protocol definition.
Subject to change without notice.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1004 ebee16cc-31ac-478f-84a7-5cbb03baadba
The com layer transmit functions should provide guarantees
that they will not modify the buffer that you're transmitting.
Declaring the parameter as a pointer to const keeps the underlying
implementations honest.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1001 ebee16cc-31ac-478f-84a7-5cbb03baadba
SD R1 response format is defined as any byte with the MSb
cleared. The code was testing for any byte that was not 0xFF
which can lead to misinterpreting a byte as the response.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@998 ebee16cc-31ac-478f-84a7-5cbb03baadba
- Created a pluggable COM layer
- Converted COM + USART init into static initializers
rather than typedefs
- Generalized the USB HID COM API to match the USART
API.
- Changed USART and COM layers to be data driven rather
than #ifdef'ing/switching on the specifics of each port
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@760 ebee16cc-31ac-478f-84a7-5cbb03baadba
Added support for SPI slave configurations to the pios SPI layer.
Converted the board specific configuration for the PIOS SPI layer to
use const static initializers rather than #defines (see pios_board.c).
SPI interface between the OP board and the AHRS is now operational at
a basic level, capable of moving simple single byte messages between
boards. Multi-byte, CRC protected messages will be added on top of this.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@759 ebee16cc-31ac-478f-84a7-5cbb03baadba
- New Attitude module for AHRS (skeleton)
- New AttitudeSettings UAVobject
- New AttitudeActual UAVobject
- Regenerated UAVobjects
- Added new UAVobjects to OpenPilot and GCS builds
- New PiOS driver for OpenPilot AHRS (stubs only)
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@655 ebee16cc-31ac-478f-84a7-5cbb03baadba
Since the EXTI and NVIC init routines automatically enable the IRQ when it
is configured, it is possible for the EOC interrupt to fire immediately
upon configuring the IRQ.
Since the handler for the EOC interrupt (EXTI15_10_IRQHandler) does a
xSemaphoreGiveFromISR, it is important to have the semaphore initialized
prior to enabling the interrupt.
Also, added missing include for altitude module.
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@654 ebee16cc-31ac-478f-84a7-5cbb03baadba
