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mcu: Support config mechanism for translating seconds to clock ticks

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Introduce a TICKS() macro during config parsing that will translate
time in seconds to time in clock ticks.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2017-03-12 19:55:56 -04:00
parent 8e6d5efdac
commit 1d796a4e24
4 changed files with 32 additions and 27 deletions
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6
docs/Firmware_Commands.md
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@@ -33,7 +33,11 @@ low-level firmware uses integer encodings of the hardware pin numbers,
but to make things more readable the host will translate human
readable pin names (eg, "PA3") to their equivalent integer
encodings. By convention, any parameter named "pin" or that has a
"_pin" suffix will use pin name translation by the host.
"_pin" suffix will use pin name translation by the host. Similarly,
several commands take time parameters specified in clock ticks. One
can specify a value for these parameters in seconds using the
"TICKS()" macro - for example "cycle_ticks=TICKS(0.001)" would result
in "cycle_ticks=16000" on a micro-controller with a 16Mhz clock.
Common startup commands: