Hi Matt,
> Log: added 10ms delay to sd_stop_write procedure per colin at jallist
> http://tech.groups.yahoo.com/group/jallist/message/27415, fixed notes in
> large_array sample.
If I understand correctly, these 10ms delay are here for some SD-Cards. Some
works without, some require this delay. I've never experimented SD-Card (I'm
waiting for your tutorial :)), but 10ms for each write seems quite a long
delay, it may slow down things quite a lot ?
Maybe this _usec_delay call can take a constant, defaulting to 10_000, user
could adjust it to his cards, including not using delay at all. Some
documentation will be required explaining this value.
-- in sample
const bit SD_SLOW_CARD = true
const word SD_WRITE_IDLE_DELAY = 5_000
-- in lib
if defined(SD_SLOW_CARD) == true & SD_SLOW_CARD == true then
if defined(SD_WRITE_IDLE_DELAY) == false then
-- defaulting
const word SD_WRITE_IDLE_DELAY = 10_000
end if
end if
-- then in write procedure
procedure sd_stop_write() is
...
if defined(SD_SLOW_CARD) == true & SD_SLOW_CARD == true then
_usec_delay (SD_WRITE_IDLE_DELAY)
end if
end procedure
What do you think ?
Cheers,
Seb
--
Sébastien Lelong
http://www.sirloon.net
http://sirbot.org
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