| Commit message (Collapse) | Author | Age | Files | Lines |
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This messes with timing a little, but makes it faster to test. The
timing was never perfect anyway, due to incrementing count.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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This replaces the previously undocumented 'd' option, which tested the
pin mode INPUT_PULLDOWN.
Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
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Actually read a character each time we ask for one. Put pin 22 back
into OUTPUT mode when we're done.
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SerialUSB.read() is already blocking, so no sense looping on available().
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Measure pins one at a time.
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Each call to measure_adc_noise() now does
N_ADC_NOISE_MEASUREMENTS (currently 40) samples, instead of just 1.
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Update measure_adc_noise() to actually use the Welford online
algorithm, instead of accumulating data in an array on the stack.
This allows us to increase the number of samples (to 1000).
Revised algorithm tested on host PC and compared (in Python) against
numpy with a list of 100 values in [0, 1) drawn using random.random().
Results (Python):
>>> r = [random.random() for i in xrange(100)]
>>> numpy.mean(r)
0.50073064742634854
>>> numpy.var(r)
0.083726090293309297
Results (C++, x86 host PC):
n: 100 mean: 0.500731 variance: 0.084572
So this algorithm for variance has some inaccuracies, but it appears
to be good to a couple of significant figures.
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Print input as if it were an ASCII character, not a number.
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Nonportable (Maple Mini only) test of external interrupt
functionality. When wired properly, this triggers various EXTI lines
simultaneously, keeping track of the number of times each handler is
invoked.
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Don't modify the core FreeRTOS code; only change source that's
specific to libmaple.
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example blinky.
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Changes make sure that base arithmetic applies correctly for various
integral types, and that floating point numbers can be printed at
various precisions.
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Go through overlong source code lines and convert as many of them as
appropriate to be 80-column clean. This mostly affects license
headers. Overlong lines are determined by running following from the
libmaple base directory:
$ ack-grep --nocolor --nogroup --cpp --cc --ignore-dir=usb -- '.{80}'
Note that this excludes libmaple's usb subdirectory, which is still
full of ST code that doesn't follow the libmaple source code
guidelines.
Contents of ~/.ackrc (these won't matter, but are included for
completeness):
--ignore-dir=docs
--ignore-dir=build
--type-set
ld=.ld
--type-set
rst=.rst
--type-set
txt=.txt
--type-set
mk=.mk
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Committing the results of running the following on the libmaple root
directory:
$ fromdos `grep --exclude-dir='[.]git' -Ilsr $'\r$' .`
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It would be nice to have something like a timer_set_period() in
libmaple proper that takes the period and the clock rate as
parameters, much the same as usart_set_baud_rate() does. No time for
that now, though, so punt to 0.1.0.
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Still a polling driver, but the libmaple proper interface exposes
enough that users enable the various interrupts and define their own
IRQ handlers if they feel like it.
Wirish HardwareSPI interface was largely redone; it's more like the
Arduino implementation now, although there are some differences when I
didn't like their API. The old methods are still there, but are
deprecated and slated for deletion in 0.1.0.
New board-specific values: BOARD_NR_SPI, BOARD_SPIx_NSS_PIN,
BOARD_SPIx_MOSI_PIN, BOARD_SPIx_MISO_PIN, and BOARD_SPIx_SCK_PIN, for
x from 1 to BOARD_NR_SPI.
Documentation was updated appropriately.
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- gpio.h: afio_mapr_swj_config() renamed afio_cfg_debug_ports()
- [new] wirish_debug.h: disableDebugPorts(), enableDebugPorts()
- Maple, Maple Native, and Maple RET6 PIN_MAPs are now larger by 5,
have mappings for the extra JTAG/SW pins.
Documentation was updated appropriately.
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This uses templates, which I don't like, but it's not going into the
core library, so I'm okay with it for now.
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Simple USART receiver to SRAM buffer demo partially working.
Interrupting when buffer is full fails mysteriously. GDB thinks
we ended up in an STM32 reserved exception.
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For the changelog:
* util.h is free of __read(), __write(), etc. macros.
* systick_resume() was renamed systick_enable().
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Adding basic ring_buffer test (cherry-pick from master).
Changing rb_safe_insert()'s type to match that of rb_push_insert().
(Makes it easier to pass around insertion functions.)
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Various board-specific #defines and arrays of pins added.
For the changelog (some of this information predates this commit):
* wirish/boards.h now declares the following arrays of pin numbers:
* boardPWMPins - PWM-capable pins
* boardADCPins - ADC-capable pins
* boardUsedPins - pins already in use, e.g. BOARD_BUTTON_PIN
It also declares a bool boardUsesPin(uint8 pin) function for
convenient testing of whether a pin is in use.
* wirish/boards/*.h now define:
* BOARD_USART1_TX_PIN
* BOARD_USART1_RX_PIN
* BOARD_USART2_TX_PIN
* BOARD_USART2_RX_PIN
* BOARD_USART3_TX_PIN
* BOARD_USART3_RX_PIN
* BOARD_NR_GPIO_PINS (renamed from NR_GPIO_PINS)
* BOARD_NR_USARTS (renamed from NR_USARTS)
* BOARD_NR_PWM_PINS
* BOARD_NR_ADC_PINS
* BOARD_NR_USED_PINS
* wirish/boards/maple_native.h now defines:
* BOARD_UART4_TX_PIN
* BOARD_UART4_RX_PIN
* BOARD_UART5_TX_PIN
* BOARD_UART5_RX_PIN
(Unfortunately, wirish/boards/maple_RET6.h cannot, since at least
one of the UART4/UART5 pins are used already; this will require layout
changes for a wide-release Maple form factor RET6 board).
* wirish/boards/*.cpp all include the corresponding array definitions.
They all live in flash by default, thanks to the new __FLASH__ macro
in wirish/wirish_types.h, which is a synonym for the existing __attr_flash
#define in libmaple/libmaple_types.h.
The documentation was updated to include this information. It also
gained various FIXME/TODO comments related to its generalization
across boards.
The quality assurance-related examples (examples/qa-slave-shield.cpp
and examples/test-session.cpp) now make heavy use of board-specific
values to ensure portability.
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Added an adc_dev to struct stm32_pin_info. This was necessary to add
support for the channels on the Native which are only connected to
ADC3, but it does add a bunch of NULLs to the PIN_MAPs.
I don't think any other peripherals need representation on a per-pin
basis. Each peripheral library will be responsible for keeping track
of related GPIO ports and bits, and we can throw #defines in to
boards/*.h for other things (e.g. BOARD_SPI1_MISO_PIN).
Fleshed out the ADC refactor and brought it more in keeping with the
new design as it evolves.
A couple of other tweaks. Notably: waitForButtonPress() now takes a
default argument meaning "wait forever".
Removed Maple-specific documentation from core functions in io.h; this
information will need to go into the individual board docs files.
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/wirish/boards/ contains xxx.h and xxx.cpp (for xxx=maple,
maple_native, maple_mini, maple_RET6). The headers contain the
board-specific #defines that used to live in boards.h (except
BOARD_INIT, which was removed). The CPP files contain the PIN_MAP
definitions that used to live in boards.cpp, and a proper boardInit()
function to replace the old BOARD_INIT macro. This will make it
easier to add new boards in the future.
struct PinMapping was renamed struct stm32_pin_info, and was moved
into a new wirish_types.h. Its external interrupt field was moved
into struct gpio_dev, which saves memory by storing an afio_exti_port
per port, rather than one per pin. Also rearranged the stm32_pin_info
fields to improve packing. Maple's PIN_MAP is now down to below 500
bytes.
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