RIOT-OS/RIOT
RIOT-OS/RIOT
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Code Releases Activity
18,076 Commits 40 Branches 189 Tags 262 MiB
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Commit Graph

10 Commits

Author SHA1 Message Date
Matthew Blue
d3d2f0212d boards/waspmote-pro: remove context swap defines 2018-05-03 17:29:28 -04:00
Alexandre Abadie
b78c96ffc7 boards/*: make brief description consistent 2018-01-24 08:30:56 +01:00
smlng
b012cdb8ad xtimer: refine config macros 
- auto set XTIMER_SHIFT relative to XTIMER_HZ
    - refine setting of XTIMER_WIDTH
 2017-09-20 16:48:38 +02:00
Alexandre Abadie
882bcff048 boards: replace @brief with @name when necessary 2017-04-13 12:10:30 +02:00
Oleg Hahm
8a36c33a6c doc: boards: fix and add documentation 2017-03-10 14:56:48 +01:00
Oleg Hahm
7ee7801c10 *: remove trailing underscores from header guards 2017-01-19 18:30:53 +01:00
Joakim Nohlgård
24b41dc633 boards: Update XTIMER_SHIFT and XTIMER_HZ configurations to match xtimer changes 2016-11-28 11:05:03 +01:00
Jon Thacker
e0365e0bf9 atmega: use software interrupt for context swap 
Fixes #5745
For AVR based boards, three defines must be defined AVR_CONTEXT_SWAP_INIT,
AVR_CONTEXT_SWAP_INTERRUPT_VECT, and AVR_CONTEXT_SWAP_TRIGGER.
These defines are used to trigger a software interrupt used for context
switching.

When AVR_CONTEXT_SWAP_INTERRUPT_VECT is handled, the scheduler is run
and a context swap will happen if necessary, with the resulting thread
starting following the reti instruction. This results in threads running
at normal priority instead of at interrupt priority.

Atmega devices do provide a pure software interrupt. The method used
here for waspmote-pro and arduino-mega2560 is to use pin change
interrupts, set the pin to act as an output, and toggle the value to
simulate a software interrupt. The main limitation here is that a
physical pin is now occupied and must be defined for each board
supported by RIOT. On the plus side, it provides an easy method for
detecting context swaps with an oscilloscope.
 2016-09-07 14:35:53 -05:00
Kaspar Schleiser
46bd2f45d9 sys: xtimer: replace XTIMER_MASK with XTIMER_WIDTH in board config 2016-07-06 18:16:15 +02:00
kYc0o
62a9773a9c boards/waspmote-pro: add support for Waspmote PRO v1.2 2016-07-05 13:05:12 +02:00