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4 Commits

Author SHA1 Message Date
Damien George
f05ae416ff stm32/softtimer: Initialise pairing-heap node before pushing to heap. 2020-03-26 01:21:04 +11:00
Damien George
69661f3343 all: Reformat C and Python source code with tools/codeformat.py. 
This is run with uncrustify 0.70.1, and black 19.10b0.
 2020-02-28 10:33:03 +11:00
Damien George
f70373c7b2 stm32/softtimer: Change linear linked list to a pairing heap. 2020-01-22 17:31:18 +11:00
Damien George
a5d97f1db9 stm32: Add soft timer implementation, using SysTick at 1ms resolution. 
This commit adds an implementation of a "software timer" with a 1ms
resolution, using SysTick.  It allows unlimited number of concurrent
timers (limited only by memory needed for each timer entry).  They can be
one-shot or periodic, and associated with a Python callback.

There is a very small overhead added to the SysTick IRQ, which could be
further optimised in the future, eg by patching SysTick_Handler code
dynamically.
 2019-10-31 22:12:55 +11:00