The /dev/userleds is created this way:
ret = userled_lower_initialize("/dev/userleds");
Open your System.map and search for userled_lower_initialize, if you
find it, this mean your firmware has it and the issue is probably some
error during the initialization.
*Please* enable the DEBUG LEDS:
Build Setup --->
Debug Options --->
[*] Enable Debug Features
[*] Enable Error Output
[*] Enable Warnings Output
[*] Low-level LED Debug Features
[*] LED Driver Error Output
[*] LED Driver Warnings Output
[*] LED Driver Informational Output
BR,
Alan
On 8/17/21, rushi ghatkar <rushighatka...@gmail.com> wrote:
> Hi,
>
> How to create * /dev/userleds* ?
>
> I have searched for it but can't find it.
> Need Help.
>
>
> Regards,
> Rushikesh Ghatkar
>
> On Mon, Aug 16, 2021 at 6:32 PM Alan Carvalho de Assis <acas...@gmail.com>
> wrote:
>
>> Did you look at /dev? I think the /dev/userleds is not created.
>>
>> Try to enable the DEBUG LED to see that is going on.
>>
>> BR,
>>
>> Alan
>>
>> On 8/16/21, rushi ghatkar <rushighatka...@gmail.com> wrote:
>> > Hi,
>> >
>> > I have changed the declaration but it still gives some warning. Please
>> find
>> > the attached image.
>> >
>> > and when I flash code and use picocom it still gives an error. Please
>> find
>> > the attachment.
>> >
>> >
>> > Regards,
>> > Rushikesh Ghatkar
>> >
>> > On Mon, Aug 16, 2021 at 5:25 PM Alan Carvalho de Assis <
>> acas...@gmail.com>
>> > wrote:
>> >
>> >> You need to declare all LEDs, including GPIO_LED_BLUE
>> >>
>> >> This is the pin on your board used for each LED.
>> >>
>> >> Please look at stm32h747i-disco/src/stm32h747i-disco.h for reference.
>> >>
>> >> BR,
>> >>
>> >> Alan
>> >>
>> >> On 8/16/21, rushi ghatkar <rushighatka...@gmail.com> wrote:
>> >> > Hi Alan sir,
>> >> >
>> >> > I have disabled the status/diagnostic LEDs compete for the use of
>> LEDs.
>> >> > So disabled it:
>> >> > Board Selection --->
>> >> > [ ] Board LED Status support
>> >> >
>> >> >
>> >> > Yes my board does support * userleds support*:
>> >> > boards/arm/stm32h7/nucleo-h743zi2/src/stm32_userleds.c
>> >> >
>> >> > But still it gives error, please see the error image attached.
>> >> >
>> >> > AR (create): libbinfmt.a binfmt_globals.o binfmt_initialize.o
>> >> > binfmt_register.o binfmt_unregister.o binfmt_loadmodule.o
>> >> > binfmt_unloadmodule.o binfmt_execmodule.o binfmt_exec.o
>> >> > binfmt_copyargv.o
>> >> > binfmt_dumpmodule.o builtin.o
>> >> > make[1]: Leaving directory '/home/rushikesh/nuttxspace/nuttx/binfmt'
>> >> > IN: binfmt/libbinfmt.a -> staging/libbinfmt.a
>> >> > make[1]: Entering directory
>> >> '/home/rushikesh/nuttxspace/nuttx/arch/arm/src'
>> >> > make[2]: Entering directory
>> >> >
>> '/home/rushikesh/nuttxspace/nuttx/boards/arm/stm32h7/nucleo-h743zi2/src'
>> >> > CC: stm32_boot.c
>> >> > CC: stm32_bringup.c
>> >> > stm32_bringup.c: In function 'stm32_bringup':
>> >> > stm32_bringup.c:88:9: warning: implicit declaration of function
>> >> > 'userled_lower_initialize' [-Wimplicit-function-declaration]
>> >> > 88 | ret = userled_lower_initialize("/dev/userleds");
>> >> > | ^~~~~~~~~~~~~~~~~~~~~~~~
>> >> > CC: stm32_userleds.c
>> >> > stm32_userleds.c:55:3: error: 'GPIO_LED_BLUE' undeclared here (not
>> >> > in
>> a
>> >> > function); did you mean 'GPIO_LED_RED'?
>> >> > 55 | GPIO_LED_BLUE,
>> >> > | ^~~~~~~~~~~~~
>> >> > | GPIO_LED_RED
>> >> > make[2]: *** [/home/rushikesh/nuttxspace/nuttx/boards/Board.mk:103:
>> >> > stm32_userleds.o] Error 1
>> >> > make[2]: Leaving directory
>> >> >
>> '/home/rushikesh/nuttxspace/nuttx/boards/arm/stm32h7/nucleo-h743zi2/src'
>> >> > make[1]: *** [Makefile:152: board/libboard.a] Error 2
>> >> > make[1]: Leaving directory
>> >> '/home/rushikesh/nuttxspace/nuttx/arch/arm/src'
>> >> > make: *** [tools/Makefile.unix:422: nuttx] Error 2
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > Regards,
>> >> > Rushikesh Ghatkar
>> >> >
>> >> > On Mon, Aug 16, 2021 at 4:41 PM Alan Carvalho de Assis <
>> >> acas...@gmail.com>
>> >> > wrote:
>> >> >
>> >> >> HI Rushikesh,
>> >> >>
>> >> >> It seams your board already has the userleds support:
>> >> >>
>> >> >> boards/arm/stm32h7/nucleo-h743zi2/src/stm32_userleds.c
>> >> >>
>> >> >> Did you disable the CONFIG_ARCH_LEDS? The status/diagnostic LEDs
>> >> >> compete for the use of LEDs.
>> >> >>
>> >> >> So disable it:
>> >> >>
>> >> >> Board Selection --->
>> >> >> [ ] Board LED Status support
>> >> >>
>> >> >> BR,
>> >> >>
>> >> >> Alan
>> >> >>
>> >> >> On 8/16/21, rushi ghatkar <rushighatka...@gmail.com> wrote:
>> >> >> > Hi,
>> >> >> >
>> >> >> > I have tried the built-in LED driver in menuconfig, Application
>> >> >> > Configuration -> Examples -> LED driver example.
>> >> >> > But when I run that driver using picocom,it shows error,
>> >> >> >
>> >> >> > Builtin Apps:
>> >> >> > leds sh hello nsh
>> >> >> > nsh> leds
>> >> >> > leds_main: Starting the led_daemon
>> >> >> > leds_main: led_daemon started
>> >> >> >
>> >> >> > led_daemon (pid# 3): Running
>> >> >> > led_daemon: Opening /dev/userleds
>> >> >> > led_daemon: ERROR: Failed to open /dev/userleds: 2
>> >> >> > led_daemon: Terminating
>> >> >> > nsh>
>> >> >> >
>> >> >> > Please find the error image attachment.
>> >> >> >
>> >> >> > In menuconfig I have selected,
>> >> >> > Board Configuration -> Board LED status report.
>> >> >> > Device Driver -> LED support -> LED driver -> Generic Lower Half
>> LED
>> >> >> Driver
>> >> >> >
>> >> >> >
>> >> >> > For this I need to have a board userleds file that will map the
>> LEDs
>> >> >> > and
>> >> >> > will create the /dev/userleds.
>> >> >> > But I have searched it in the list by using this command
>> >> >> > *./tools/configure.sh
>> >> >> > -L | less*
>> >> >> > There is no *nucleo-h743zi2:userleds* file available.
>> >> >> >
>> >> >> > Is there any way to make it *board userled file*, so we can use
>> >> >> > it?
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > Regards,
>> >> >> > Rushikesh
>> >> >> >
>> >> >> > On Mon, Aug 16, 2021 at 4:19 PM Alan Carvalho de Assis <
>> >> >> acas...@gmail.com>
>> >> >> > wrote:
>> >> >> >
>> >> >> >> Please ask this question in the mailing list, it could help
>> >> >> >> other
>> >> >> >> people in the future.
>> >> >> >>
>> >> >> >> You need to have a board userleds file that will map the LEDs
>> >> >> >> and
>> >> >> >> will create the /dev/userleds.
>> >> >> >>
>> >> >> >> BR,
>> >> >> >>
>> >> >> >> Alan
>> >> >> >>
>> >> >> >> On 8/16/21, rushi ghatkar <rushighatka...@gmail.com> wrote:
>> >> >> >> > On Mon, Aug 16, 2021 at 2:42 PM rushi ghatkar
>> >> >> >> > <rushighatka...@gmail.com>
>> >> >> >> > wrote:
>> >> >> >> >
>> >> >> >> >> Hi,
>> >> >> >> >>
>> >> >> >> >> I have tried the built-in LED driver in menuconfig,
>> Application
>> >> >> >> >> Configuration -> Examples -> LED driver example.
>> >> >> >> >> But when I run that driver using picocom,it shows error,
>> >> >> >> >>
>> >> >> >> >> Builtin Apps:
>> >> >> >> >> leds sh hello nsh
>> >> >> >> >> nsh> leds
>> >> >> >> >> leds_main: Starting the led_daemon
>> >> >> >> >> leds_main: led_daemon started
>> >> >> >> >>
>> >> >> >> >> led_daemon (pid# 3): Running
>> >> >> >> >> led_daemon: Opening /dev/userleds
>> >> >> >> >> led_daemon: ERROR: Failed to open /dev/userleds: 2
>> >> >> >> >> led_daemon: Terminating
>> >> >> >> >> nsh>
>> >> >> >> >>
>> >> >> >> >> Please find the error image attachment.
>> >> >> >> >>
>> >> >> >> >> In menuconfig I have selected,
>> >> >> >> >> Board Configuration -> Board LED status report.
>> >> >> >> >> Device Driver -> LED support -> LED driver -> Generic Lower
>> Half
>> >> >> >> >> LED
>> >> >> >> >> Driver
>> >> >> >> >>
>> >> >> >> >>
>> >> >> >> >> Why is it still showing the error?
>> >> >> >> >>
>> >> >> >> >>
>> >> >> >> >> Regards,
>> >> >> >> >> Rushikesh
>> >> >> >> >>
>> >> >> >> >> On Fri, Aug 13, 2021 at 5:57 PM rushi ghatkar
>> >> >> >> >> <rushighatka...@gmail.com
>> >> >> >> >
>> >> >> >> >> wrote:
>> >> >> >> >>
>> >> >> >> >>> Hi Alan sir,
>> >> >> >> >>>
>> >> >> >> >>> Thank you for the clarification.
>> >> >> >> >>>
>> >> >> >> >>>
>> >> >> >> >>> Regards,
>> >> >> >> >>> Rushikesh
>> >> >> >> >>>
>> >> >> >> >>>
>> >> >> >> >>>
>> >> >> >> >>> On Fri, Aug 13, 2021 at 5:34 PM Alan Carvalho de Assis
>> >> >> >> >>> <acas...@gmail.com>
>> >> >> >> >>> wrote:
>> >> >> >> >>>
>> >> >> >> >>>> What do you mean by "try to make driver into app" ?
>> >> >> >> >>>>
>> >> >> >> >>>> Drivers need to be created on nuttx/drivers, not at apps/.
>> >> >> >> >>>> Also
>> >> >> >> >>>> you
>> >> >> >> >>>> cannot call a driver function directly from apps/, it is a
>> >> >> violation
>> >> >> >> >>>> of the OS abstraction.
>> >> >> >> >>>>
>> >> >> >> >>>> Your application needs to open the /dev/yourdriver to
>> >> >> >> >>>> read/write
>> >> >> >> >>>> from/to your driver.
>> >> >> >> >>>>
>> >> >> >> >>>> BR,
>> >> >> >> >>>>
>> >> >> >> >>>> Alan
>> >> >> >> >>>>
>> >> >> >> >>>> On 8/13/21, rushi ghatkar <rushighatka...@gmail.com> wrote:
>> >> >> >> >>>> > Hi @Alan & @Frank sir,
>> >> >> >> >>>> >
>> >> >> >> >>>> > I was also thinking the same, first check for the drivers
>> >> >> >> >>>> > I
>> >> >> >> >>>> > need
>> >> >> >> >>>> > and
>> >> >> >> >>>> then
>> >> >> >> >>>> > copy it and the change as per my needs.
>> >> >> >> >>>> > Then change Makefiles, Make.defs, and Kconfigs files to
>> >> >> >> >>>> > make
>> >> >> the
>> >> >> >> >>>> driver
>> >> >> >> >>>> > include.
>> >> >> >> >>>> > Then make them an app to run on picocom.
>> >> >> >> >>>> >
>> >> >> >> >>>> > Will try to change driver as per need and try to make
>> driver
>> >> >> >> >>>> > into
>> >> >> >> app
>> >> >> >> >>>> to
>> >> >> >> >>>> > get it run on picocom.
>> >> >> >> >>>> >
>> >> >> >> >>>> > Thanks for the information.
>> >> >> >> >>>> >
>> >> >> >> >>>> >
>> >> >> >> >>>> > Thanks & Regards,
>> >> >> >> >>>> > Rushikesh Ghatkar
>> >> >> >> >>>> >
>> >> >> >> >>>> > On Fri, Aug 13, 2021 at 5:11 PM Frank-Christian Kruegel <
>> >> >> >> >>>> nu...@istda.com>
>> >> >> >> >>>> > wrote:
>> >> >> >> >>>> >
>> >> >> >> >>>> >> Am 13.08.2021 um 10:43 schrieb rushi ghatkar:
>> >> >> >> >>>> >> > Hi,
>> >> >> >> >>>> >> >
>> >> >> >> >>>> >> > I have configured and installed Nuttx rtos on the
>> >> >> >> >>>> >> > Nucleo-H743zi2
>> >> >> >> >>>> board.
>> >> >> >> >>>> >> >
>> >> >> >> >>>> >> > Now I want to create my own driver. How to create our
>> own
>> >> >> >> >>>> >> > driver?
>> >> >> >> >>>> >> >
>> >> >> >> >>>> >> > Has anyone created their own driver using Nuttx rtos
>> >> >> >> >>>> >> > on
>> >> >> >> >>>> >> > the
>> >> >> >> >>>> >> > STM32
>> >> >> >> >>>> >> > board?
>> >> >> >> >>>> >> >
>> >> >> >> >>>> >> > Could anybody please tell me how to start?
>> >> >> >> >>>> >>
>> >> >> >> >>>> >> Been there, done that.
>> >> >> >> >>>> >>
>> >> >> >> >>>> >> The best starting point is to look for a similar driver.
>> >> >> >> >>>> >> I
>> >> >> needed
>> >> >> >> >>>> >> drivers for ADC and DAC chips with I2C interface, so I
>> >> >> >> >>>> >> looked
>> >> >> for
>> >> >> >> >>>> those
>> >> >> >> >>>> >> drivers, copied one and changed it according to my
>> >> >> >> >>>> >> needs.
>> >> Then
>> >> >> >> >>>> >> I
>> >> >> >> >>>> looked
>> >> >> >> >>>> >> into Makefiles, Make.defs, and Kconfigs, how these
>> >> >> >> >>>> >> drivers
>> >> >> >> >>>> >> were
>> >> >> >> >>>> included
>> >> >> >> >>>> >> an included mine in the same manner.
>> >> >> >> >>>> >>
>> >> >> >> >>>> >> The build system with make menuconfig, Makefiles and
>> >> >> >> >>>> >> Kconfigs
>> >> >> >> >>>> >> is
>> >> >> >> the
>> >> >> >> >>>> >> same as for the Linux kernel. Since your development
>> >> >> >> >>>> >> platform
>> >> >> >> >>>> >> is
>> >> >> >> >>>> >> Linux
>> >> >> >> >>>> >> anyways (this is the strongly recommended default
>> platform)
>> >> >> >> >>>> >> you
>> >> >> >> >>>> >> should
>> >> >> >> >>>> >> already have plenty of Linux experience and know how to
>> >> >> customize
>> >> >> >> an
>> >> >> >> >>>> >> Linux kernel, how to use Makefiles and gcc and gdb and
>> >> >> >> >>>> >> binutils.
>> >> >> >> >>>> >> If
>> >> >> >> >>>> you
>> >> >> >> >>>> >> know Linux well the step to NuttX is not so big any
>> >> >> >> >>>> >> more.
>> >> >> >> >>>> >>
>> >> >> >> >>>> >> I started a year ago, and it took me two months to get
>> >> started
>> >> >> >> >>>> >> with
>> >> >> >> >>>> own
>> >> >> >> >>>> >> hardware and own drivers (ok, with Linux experience
>> >> >> >> >>>> >> since
>> >> 1993
>> >> >> >> >>>> >> and
>> >> >> >> >>>> UNIX
>> >> >> >> >>>> >> experience since 1989).
>> >> >> >> >>>> >>
>> >> >> >> >>>> >>
>> >> >> >> >>>> >> Frank-Christian
>> >> >> >> >>>> >>
>> >> >> >> >>>> >
>> >> >> >> >>>>
>> >> >> >> >>>
>> >> >> >> >
>> >> >> >>
>> >> >> >
>> >> >>
>> >> >
>> >>
>> >
>>
>
