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* test-session.cpp: Measure ADC noise sequentially.Marti Bolivar2011-08-311-8/+28
| | | | Measure pins one at a time.
* test-session.cpp: Multiple ADC noise measurements by default.Marti Bolivar2011-08-311-15/+20
| | | | | Each call to measure_adc_noise() now does N_ADC_NOISE_MEASUREMENTS (currently 40) samples, instead of just 1.
* test-session.cpp: Better analog noise readings.Marti Bolivar2011-08-311-8/+9
| | | | | | | | | | | | | | | | | | | | | | | | 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.
* fsmc-stress-test.cpp: Eliminating unnecessary variable.Marti Bolivar2011-08-311-2/+1
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* fsmc-stress-test.cpp: Convert to SerialUSB, don't print so much.Marti Bolivar2011-08-311-2/+1
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* test-session.cpp: Tweak output.Marti Bolivar2011-08-301-1/+1
| | | | Print input as if it were an ASCII character, not a number.
* test-fsmc.cpp: Tweak output.Marti Bolivar2011-08-301-0/+1
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* usart.h: Remove unnecessary local in usart_putc().Marti Bolivar2011-08-301-2/+1
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* maple_native.h: Fix USART pins.Marti Bolivar2011-08-301-8/+8
| | | | | These apparently didn't get updated from an earlier prototype's values.
* fsmc-stress-test.cpp: Eliminating unnecessary variable.Marti Bolivar2011-08-301-3/+1
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* fsmc-stress-test.cpp: Eliminate unused variable.Marti Bolivar2011-08-301-2/+0
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* fsmc-stress-test.cpp: Halt on error, print "all's well" message less often.Marti Bolivar2011-08-301-5/+11
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* fsmc-stress-test.cpp: Convert to SerialUSB, don't print so much.Marti Bolivar2011-08-301-7/+20
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* stm32.h: Doxygen tweaks.Marti Bolivar2011-08-301-49/+49
| | | | | | | | For some unfathomable reason, Doxygen happily believes in PCLK2, but but not PCLK1, so Breathe can't find the docs for PCLK1, and all the children are unhappy. As a workaround, move all the Doxgyen crap into __DOXYGEN_PREDEFINED_HACK sections immediately preceding the actual definitions.
* Makefile: Add doxygen to .PHONY, remove doxygen dir on clean.Marti Bolivar2011-08-301-2/+2
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* dma.c: Fix Doxygen syntax for dma_get_irq_cause().Marti Bolivar2011-08-301-2/+2
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* util.h: DoxygenMarti Bolivar2011-08-221-0/+13
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* stm32.h: DoxygenMarti Bolivar2011-08-221-20/+49
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* Doxyfile: add __DOXYGEN_PREDEFINED_HACK to PREDEFINED.Marti Bolivar2011-08-221-1/+2
| | | | | | | Doxygen refuses to trust us when we \def something that it doesn't notice as a #define. To work around this, we put __DOXYGEN_PREDEFINED_HACK into our Doxyfile's PREDEFINED, so that documentation may be inserted for #defines which we know will exist.
* stm32.h: DoxygenMarti Bolivar2011-08-221-1/+31
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* scb.h: DoxygenMarti Bolivar2011-08-221-0/+1
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* nvic.h: DoxygenMarti Bolivar2011-08-221-2/+9
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* i2c.h: DoxygenMarti Bolivar2011-08-221-1/+1
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* gpio.h: DoxygenMarti Bolivar2011-08-221-11/+20
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* flash.c: DoxygenMarti Bolivar2011-08-221-1/+2
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* exti.c: Doxygen improvements.Marti Bolivar2011-08-221-3/+4
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* rcc: Doxygen improvements.Marti Bolivar2011-08-222-20/+21
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* dma.h: Doxygen improvements.Marti Bolivar2011-08-221-1/+6
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* Whitespace tweak.Marti Bolivar2011-08-181-1/+1
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* freertos-blinky.cpp: Remove executable bit.Marti Bolivar2011-08-181-0/+0
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* HardwareSerial.h: Remove documentation TODO.Marti Bolivar2011-08-161-3/+0
| | | | | | | It's difficult to document HardwareSerial's interface fully in HardwareSerial.h, since most of the methods people care about are inherited from Print, anyway. Stick with documenting this interface by hand for the foreseeable future.
* HardwareSerial.cpp: Respect PCLK1 and PCLK2.Marti Bolivar2011-08-161-6/+6
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* HardwareSerial: Add pin accessors.Marti Bolivar2011-08-161-0/+4
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* HardwareSerial: trivial code reorderingMarti Bolivar2011-08-162-11/+23
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* HardwareSPI.cpp: minor HardwareSPI::send() cleanup.Marti Bolivar2011-08-161-4/+1
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* HardwareSPI: Add pin accessors.Marti Bolivar2011-08-162-40/+102
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* Typos.Marti Bolivar2011-08-112-2/+2
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* Fix Doxyfile.Marti Bolivar2011-08-031-5/+5
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* examples/mini-exti-test.cpp: Comment fix.Marti Bolivar2011-08-031-4/+4
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* exti.c: Optimize multiplexed IRQ handlers.Marti Bolivar2011-08-031-43/+48
| | | | | | | | | | | | | | Rewrite existing IRQ handlers in terms of new functions dispatch_single_exti() and dispatch_extis(). dispatch_single_exti() handles EXTIs which have a dedicated IRQ line, and thus doesn't have to check EXTI_PR; it is mostly equivalent to the (now removed) handle_exti(). dispatch_extis() handles multiple EXTIs sharing an IRQ line. Using dispatch_extis() instead of calling handle_exti() multiple times avoids unnecessary I/O to the (volatile) EXTI_BASE->PR register. These changes are in the flavor of the timer IRQ optimizations performed in f5016b15bef56bbdfd187f9b623177ef6dde7ace.
* exti.c: Cleanups.Marti Bolivar2011-08-031-5/+4
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* exti.c: Remove enable_irq() and maybe_disable_irq().Marti Bolivar2011-08-031-36/+1
| | | | | These functions incorrectly replicate functionality that is already accomplished by manipulating EXTI_IMR directly.
* exti.c: Clean up some bit-banding usages.Marti Bolivar2011-08-031-9/+9
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* exti.c: Cleanups.Marti Bolivar2011-08-031-21/+18
| | | | | Add new handle_exti() instead of calling clear_pending() and dispatch_handler() each time.
* util.h: Properly parenthesize IS_POWER_OF_TWO().Marti Bolivar2011-08-031-1/+1
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* Add examples/mini-exti-test.cpp.Marti Bolivar2011-08-031-0/+251
| | | | | | | 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.
* timer.c: Minor IRQ dispatch tweaks.Marti Bolivar2011-07-211-3/+3
| | | | | | Read TIMx_SR before grabbing a pointer to the user handlers instead of after. This should shave a couple of cycles off of the time between IRQ entry and SR read.
* timer.c: Optimize IRQ dispatch routines.Marti Bolivar2011-07-201-59/+66
| | | | | | | | | | | | | | | | | Remove dispatch_irq() and dispatch_cc_irqs(). For IRQs which handle exactly one timer interrupt, add new dispatch_single_irq(). The mere fact that the IRQ has been called suffices to prove that its interrupt enable bit (in TIMx_DIER) and interrupt flag (in TIMx_SR) are set. These facts are combined in dispatch_single_irq(), which only needs to check if the timer_dev handler is non-null before calling it and clearing the SR flag. For IRQs which serve multiple timer interrupts, replace the composition of calls to dispatch_irq() and dispatch_cc_irqs() with individualized routines. These eliminate unnecessary timer register reads/writes, and, in the case of capture/compare interrupts, have a loop unrolling performed.
* timer.c: Fix dispatch_irq() and dispatch_cc_irqs().Marti Bolivar2011-07-191-24/+46
| | | | | Modify them to check whether the relevant interrupts are enabled before attempting to handle them.
* timer.c: Fix off-by-one error in NR_GEN_HANDLERS.Marti Bolivar2011-07-181-1/+1
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