Hi Rushikesh,
You need to look the source code example to understand how to control
a single LED.
The userled works as a set of LEDs, so you need to use an IOCTL
command to set a single bit to turn on/off single LED. It is not like
the GPIO that you have a unique device file for each GPIO.
BR,
Alan
On 8/19/21, rushi ghatkar <rushighatka...@gmail.com> wrote:
> Hi,
>
> Thank you Alan sir. Now it's working.
>
>
> Did you enable NSH_ARCHINIT ?
>
> Application Configuration --->
> NSH Library --->
> [*] Have architecture-specific initialization
>
> Could you please tell me how this nsh library works here?
>
> This built-in leds driver works but it shows binary values.
> How to blink single led? To blink single led which driver reference we have
> to take, *userled_lower.c* or *userled_upper.c* from
> *nuttx/driver/leds*
> ?
>
>
> Regards,
> Rushikesh Ghatkar
>
> On Wed, Aug 18, 2021 at 5:53 PM Alan Carvalho de Assis <acas...@gmail.com>
> wrote:
>
>> Did you enable the LED DEBUG?
>>
>> Note that "Initializing LEDs" is not printed!
>>
>> Did you enable NSH_ARCHINIT ?
>>
>> Application Configuration --->
>> NSH Library --->
>> [*] Have architecture-specific initialization
>>
>> BR,
>>
>> Alan
>>
>> On 8/18/21, rushi ghatkar <rushighatka...@gmail.com> wrote:
>> > Hi,
>> >
>> > I have modified as u asked,
>> > Please open your drivers/leds/userled_lower.c and modify it to print
>> > some
>> > info:
>> >
>> > int userled_lower_initialize(FAR const char *devname)
>> > {
>> > int ret;
>> >
>> > ledinfo("Initializing LEDs\n");
>> >
>> > g_lednum = board_userled_initialize();
>> > ret = userled_register(devname, &g_userled_lower);
>> > if (ret < 0)
>> > {
>> > lederr("Failed to register userled: %d\n", ret);
>> > }
>> > }
>> >
>> >
>> > But from the *app/example/leds/leds_main.c* side it's not reaching to
>> > our
>> > driver to find */dev/userled* path.
>> >
>> > In *app/example/leds/leds_main.c app *"open the LED driver" section,
>> > it
>> > gives an error. Please find the attached image.
>> >
>> >
>> >
>> > Regards,
>> > Rushikesh Ghatkar
>> >
>> >
>> >
>> > On Wed, Aug 18, 2021 at 5:08 PM Alan Carvalho de Assis <
>> acas...@gmail.com>
>> > wrote:
>> >
>> >> Hi Rushikesh,
>> >>
>> >> Since it is there the /dev/userleds0 should be registered.
>> >>
>> >> Please open your drivers/leds/userled_lower.c and modify it to print
>> some
>> >> info:
>> >>
>> >> int userled_lower_initialize(FAR const char *devname)
>> >> {
>> >> int ret;
>> >>
>> >> ledinfo("Initializing LEDs\n");
>> >>
>> >> g_lednum = board_userled_initialize();
>> >> ret = userled_register(devname, &g_userled_lower);
>> >> if (ret < 0)
>> >> {
>> >> lederr("Failed to register userled: %d\n", ret);
>> >> }
>> >> }
>> >>
>> >> Then run it with LED debug enabled.
>> >>
>> >> BR,
>> >>
>> >> Alan
>> >>
>> >> On 8/18/21, rushi ghatkar <rushighatka...@gmail.com> wrote:
>> >> > Hi @Alan sir,
>> >> >
>> >> > Found *System.map* and checked for *userled_lower_initialise* and
>> >> > it's
>> >> > there. Means my firmware has it. Please find the attached image.
>> >> >
>> >> > Then what is the problem? and how to solve it?
>> >> >
>> >> >
>> >> >
>> >> > Regards,
>> >> > Rushikesh
>> >> >
>> >> > On Wed, Aug 18, 2021 at 4:39 PM Alan Carvalho de Assis <
>> >> acas...@gmail.com>
>> >> > wrote:
>> >> >
>> >> >> "Open your System.map and search for userled_lower_initialize"
>> >> >>
>> >> >> On 8/18/21, rushi ghatkar <rushighatka...@gmail.com> wrote:
>> >> >> > Hi,
>> >> >> >
>> >> >> > @Alan sir, I have enabled the debug option and checked, it still
>> >> >> > gives
>> >> >> the
>> >> >> > same error message in nsh> prompt whenever I run the built-in
>> driver
>> >> or
>> >> >> my
>> >> >> > own driver.
>> >> >> > Please find the attached image.
>> >> >> >
>> >> >> > it's not reaching to* /dev/userleds* path.
>> >> >> >
>> >> >> >
>> >> >> > Regards,
>> >> >> > Rushikesh Ghatkar
>> >> >> >
>> >> >> > On Tue, Aug 17, 2021 at 6:59 PM Alan Carvalho de Assis <
>> >> >> acas...@gmail.com>
>> >> >> > wrote:
>> >> >> >
>> >> >> >> 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
>> >> >> >> >> >> >> >> >>>> >>
>> >> >> >> >> >> >> >> >>>> >
>> >> >> >> >> >> >> >> >>>>
>> >> >> >> >> >> >> >> >>>
>> >> >> >> >> >> >> >> >
>> >> >> >> >> >> >> >>
>> >> >> >> >> >> >> >
>> >> >> >> >> >> >>
>> >> >> >> >> >> >
>> >> >> >> >> >>
>> >> >> >> >> >
>> >> >> >> >>
>> >> >> >> >
>> >> >> >>
>> >> >> >
>> >> >>
>> >> >
>> >>
>> >
>>
>
