I have posted the src file for a new hal_pi_gpio that has
inputs, inverted input
outputs, inverted outptus reset outputs ( allowing double step for rpi opi bpi )
this forum is hard to follow so i have not ( this morning ) found where i posted it .
so, here it is again
the 'easy' way to build it
is to do it in a RIP
Code:
cd
cd yourRIPdir
. scripts/rip-environment
( yes thats DOT SPACE before the 's' )
find your old hal_pi_gpio.c file
remove it from 'that place'
store it away for safety
then put my new hal_pi_gpio.c file in 'that place'
then 'touch' it to isure it's 'new' and will be compiled
Code:
touch hal_pi_gpio.c
go back down to the src dir
its only a few seconds to finsih
now use it
in a hal file
Code:
loadrt hal_pi_gpio pi_pins=\
{3,>,0,Y}{5,>,1,N){11,<.+,x}
that makes pin 3 an ouput with initial value 0 and is resetable
and make pin 5 and output with initial value 1 and not resetable.
and makes pin 11 and input with and additional inverted pin ( th x is just a place holder for nice columns of print )
read the code to see more
some of the pin 'features' are enabled with these {...} sets
so the feature still needs to be turned on
like
Code:
loadrt hal_pi_gpio pi_pins={40,>,1,Y}
will creare a resettable pin
BUT you need to say
Code:
setp hal_pi_gpip.pin-40-out-reset 1
to turn on the feature
hth
tomp
