Hello Tiago.
Please look de draft here: https://github.com/apache/nuttx/pull/14548
This branch will refer to the updated 3rd-party in my repo.
You only need to enable PM in menuconfig and it will be enough to see
changes.
Em ter., 29 de out. de 2024 às 13:10, Tiago Medicci Serrano <
tiago.medi...@gmail.com> escreveu:
> Hi Felipe,
>
> Can you share your PR as a draft on GH to make it easier to check the files
> (and the build process)?
>
> Em ter., 29 de out. de 2024 às 12:41, Felipe Moura Oliveira <
> moura....@gmail.com> escreveu:
>
> > Hello Tiago,
> >
> > I "finished" the port, but after it my esp32c6 dev kit is resetting.
> Maybe
> > the issue is related my changes in
> > boards/risc-v/esp32c6/common/scripts/esp32c6_sections.ld. Can you give
> some
> > tips about how to go ahead?
> >
> > Below you can see nuttx report:
> > Build:Sep 19 2022
> > rst:0x7 (TG0_WDT_HPSYS),boot:0x7f (SPI_FAST_FLASH_BOOT)
> > Saved PC:0x40018bea
> > SPIWP:0xee
> > mode:DIO, clock div:2
> > load:0x40800000,len:0x61e0
> > load:0x408061e0,len:0xc34
> > load:0x50000000,len:0x20
> > load:0x5000001e,len:0x24
> > Invalid image block, can't boot.
> > ets_main.c 331
> > ESP-ROM:esp32c6-20220919
> >
> > Em ter., 29 de out. de 2024 às 08:46, Felipe Moura Oliveira <
> > moura....@gmail.com> escreveu:
> >
> > > Hello everyone,
> > >
> > > I was able to solve linker issues, editing the linker by myself. I need
> > to
> > > finish more than one build issue before testing it, so I will see if I
> > made
> > > the right changes in linker.
> > >
> > > Em seg., 28 de out. de 2024 às 16:01, Felipe Moura Oliveira <
> > > moura....@gmail.com> escreveu:
> > >
> > >> *Hello everyone, Tiago,*
> > >>
> > >> I have made progress with the build issue I was encountering and am
> now
> > >> "stuck" at what I believe is one of the final stages. I am
> experiencing
> > the
> > >> following compilation error:
> > >> LD: nuttx
> > >> riscv-none-elf-ld: warning:
> > /home/felipe-moura/nuttxspace/nuttx-felipe/nuttx
> > >> has a LOAD segment with RWX permissions
> > >> riscv-none-elf-ld: /home/felipe-moura/nuttxspace/nuttx-felipe/staging/
> > >> libarch.a(sleep_modes.o): in function
> > >> `esp_set_deep_sleep_wake_stub_default_entry':
> > >> sleep_modes.c:(.rtc.text.4+0x0): undefined reference to
> > >> `_rtc_force_fast_end'
> > >> riscv-none-elf-ld: sleep_modes.c:(.rtc.text.4+0x4): undefined
> reference
> > >> to `_rtc_text_start'
> > >> riscv-none-elf-ld: sleep_modes.c:(.rtc.text.4+0x8): undefined
> reference
> > >> to `_rtc_force_fast_end'
> > >> riscv-none-elf-ld: sleep_modes.c:(.rtc.text.4+0xc): undefined
> reference
> > >> to `_rtc_text_start'
> > >> riscv-none-elf-ld:
> > >>
> >
> /home/felipe-moura/nuttxspace/nuttx-felipe/staging/libarch.a(sleep_cpu.o):
> > >> in function `esp_sleep_cpu_retention':
> > >> sleep_cpu.c:(.iram1.8+0x200): undefined reference to
> > >> `rv_core_critical_regs_save'
> > >> riscv-none-elf-ld: sleep_cpu.c:(.iram1.8+0x21e): undefined reference
> to
> > >> `rv_core_critical_regs_restore'
> > >> riscv-none-elf-ld: sleep_cpu.c:(.iram1.8+0x226): undefined reference
> to
> > >> `rv_core_critical_regs_restore'
> > >> make[1]: *** [Makefile:189: nuttx] Error 1
> > >> make: *** [tools/Unix.mk:551: nuttx] Error 2
> > >>
> > >> I would greatly appreciate your assistance.
> > >>
> > >> Focusing on the item _rtc_text_start, I see that it is defined in the
> > >> file:
> > >>
> arch/risc-v/src/chip/esp-hal-3rdparty/components/esp_system/ld/esp32c6/
> > >> sections.ld.in
> > >>
> > >> However, I am unsure how to add this file to the complete linking
> > >> process. I added this file to hal_esp32c6.mk, but I received the
> > >> following error:
> > >> LD: nuttx
> > >>
> > riscv-none-elf-ld:/home/felipe-moura/nuttxspace/nuttx-felipe/arch/risc-v/
> > >> src/chip/esp-hal-3rdparty/components/esp_system/ld/esp32c6/
> > >> sections.ld.in.tmp:113 cannot move location counter backwards (from
> > >> 40809800 to 40800000)
> > >> make[1]: *** [Makefile:189: nuttx] Error 1
> > >> make: *** [tools/Unix.mk:551: nuttx] Error 2
> > >>
> > >>
> > >> Does anyone have any tips or suggestions that could help me move
> forward
> > >> with this process?
> > >>
> > >> Thank you in advance for your help.
> > >>
> > >> *Best regards,*
> > >>
> > >>
> > >> Em sex., 25 de out. de 2024 às 12:02, Tiago Medicci Serrano <
> > >> tiago.medi...@gmail.com> escreveu:
> > >>
> > >>> Hi Felipe,
> > >>>
> > >>> The RTC GPIO is a feature of the GPIO/RTC driver, so a substitute for
> > >>> this
> > >>> function should be part
> > >>> of `nuttx/arch/risc-v/src/common/espressif/esp_rtc_gpio.c`. That
> being
> > >>> said, you can either implement it (and define it as a macro, on HAL)
> or
> > >>> you
> > >>> can either ignore these functions related to GPIO wakeup from sleep
> for
> > >>> now
> > >>> (using, for instance, the `#ifndef __NuttX__`). It's up to you: if
> the
> > >>> GPIO
> > >>> wakeup isn't mandatory, it'd go baby steps, removing this feature for
> > >>> now.
> > >>>
> > >>> Best regards,
> > >>>
> > >>> Em sex., 25 de out. de 2024 às 09:33, Felipe Moura Oliveira <
> > >>> moura....@gmail.com> escreveu:
> > >>>
> > >>> > Hello Tiago,
> > >>> >
> > >>> > Thank you for your assistance earlier.
> > >>> >
> > >>> > I would like to discuss further the necessity of the
> > >>> > esp_driver_gpio/include/rtc_io.h file, which is only available in
> the
> > >>> IDF.
> > >>> >
> > >>> > In sleep_modes.c, there is the following code snippet:
> > >>> > esp_err_t esp_sleep_enable_ext1_wakeup_io(uint64_t io_mask,
> > >>> > esp_sleep_ext1_wakeup_mode_t level_mode)
> > >>> > {
> > >>> > if (io_mask == 0 && level_mode > ESP_EXT1_WAKEUP_ANY_HIGH) {
> > >>> > return ESP_ERR_INVALID_ARG;
> > >>> > }
> > >>> > // Translate bit map of GPIO numbers into the bit map of RTC IO
> > numbers
> > >>> > uint32_t rtc_gpio_mask = 0;
> > >>> > for (int gpio = 0; io_mask; ++gpio, io_mask >>= 1) {
> > >>> > if ((io_mask & 1) == 0) {
> > >>> > continue;
> > >>> > }
> > >>> > if (!esp_sleep_is_valid_wakeup_gpio(gpio)) {
> > >>> > ESP_LOGE(TAG, "Not an RTC IO: GPIO%d", gpio);
> > >>> > return ESP_ERR_INVALID_ARG;
> > >>> > }
> > >>> > rtc_gpio_mask |= BIT(rtc_io_number_get(gpio));
> > >>> > }
> > >>> >
> > >>> > I believe this code is essential for compilation. The function
> > >>> > rtc_io_number_get is located at the following path in the IDF:
> > >>> > components/esp_driver_gpio/include/driver/rtc_io.h.
> > >>> >
> > >>> > However, the esp_driver_gpio folder is not present in the 3rd-party
> > >>> > directory. In this case, what is the recommended procedure to
> > proceed?
> > >>> >
> > >>> > Thank you again for your support.
> > >>> >
> > >>> > Em sex., 25 de out. de 2024 às 08:52, Tiago Medicci Serrano <
> > >>> > tiago.medi...@gmail.com> escreveu:
> > >>> >
> > >>> > > Hi Felipe,
> > >>> > >
> > >>> > > `esp_private/pm_impl.h` is from the component `esp_pm` of
> ESP-IDF,
> > >>> which
> > >>> > is
> > >>> > > a driver directly. Same for `esp_driver_gpio/include/rtc_io.h`
> > >>> (here, a
> > >>> > > detail: I wasn't able to find this path on IDF, so make sure you
> > are
> > >>> > > checking under the `release/v5.1` branch, which the HAL was
> based).
> > >>> The
> > >>> > HAL
> > >>> > > repository doesn't contain ESP-IDF drivers, which are always
> > >>> implemented
> > >>> > on
> > >>> > > NuttX. For `esp_cpu.h`, it's already on HAL (at
> > >>> > > `esp-hal-3rdparty/components/esp_hw_support/include/esp_cpu.h`).
> > >>> > >
> > >>> > > The files under `esp-hal-3rdparty/components/esp_hw_support`
> > >>> > > (`sleep_modes.c`, for instance) MAY be used to implement the
> > driver.
> > >>> This
> > >>> > > is, mostly, a wrapping layer under the function of `esp_rom` and
> > >>> `hal`
> > >>> > > components. However, they still may refer to ESP-IDF drivers.
> That
> > >>> being
> > >>> > > said, you can check if removing such dependencies is possible. We
> > >>> usually
> > >>> > > do that with conditional macros. A good starting point is to
> check
> > >>> for
> > >>> > > `#ifdef __NuttX__` on these sources and headers: we use them to
> > >>> > remove/add
> > >>> > > headers and functions that aren't available on NuttX/needed by
> > NuttX.
> > >>> > >
> > >>> > > Best regards,
> > >>> > >
> > >>> > > Em qui., 24 de out. de 2024 às 19:46, Felipe Moura Oliveira <
> > >>> > > moura....@gmail.com> escreveu:
> > >>> > >
> > >>> > > > Hello all,
> > >>> > > >
> > >>> > > > Tiago,
> > >>> > > >
> > >>> > > > I have a question regarding the porting process. Specifically,
> I
> > >>> need
> > >>> > to
> > >>> > > > add the sleep_modes.c file to the compilation process. Am I on
> > the
> > >>> > right
> > >>> > > > path with this approach?
> > >>> > > >
> > >>> > > > To achieve this, I modified the hal_esp32c6.mk file by adding
> > >>> > > > sleep_modes.c.
> > >>> > > > However, I am facing some issues: within sleep_modes.c, some
> > >>> #include
> > >>> > > > statements reference files that are not available in the
> > 3rd-party
> > >>> > > > directory but are only present in the IDF. For example:
> > >>> > > >
> > >>> > > > - esp_private/pm_impl.h
> > >>> > > > - esp_cpu.h
> > >>> > > > - components/esp_driver_gpio/include/rtc_io.h
> > >>> > > >
> > >>> > > > I need those includes because sleep_modes.c uses function from
> > >>> there.
> > >>> > > >
> > >>> > > > Could you please advise if it's possible to incorporate these
> IDF
> > >>> > folders
> > >>> > > > into the 3rd-party directory, or if that approach is not
> > >>> recommended?
> > >>> > > >
> > >>> > > > Thank you for your assistance.
> > >>> > > >
> > >>> > > > Best regards,
> > >>> > > >
> > >>> > > > Em qua., 23 de out. de 2024 às 15:21, Tiago Medicci Serrano <
> > >>> > > > tiago.medi...@gmail.com> escreveu:
> > >>> > > >
> > >>> > > > > Hi,
> > >>> > > > >
> > >>> > > > > Just another note to guide your development: we don't develop
> > >>> > anything
> > >>> > > on
> > >>> > > > > `esp-hal-3rdparty`: most of the code we use from it is
> derived
> > >>> from
> > >>> > the
> > >>> > > > > path
> > >>> > > > >
> > >>> > > > >
> > >>> > > >
> > >>> > >
> > >>> >
> > >>>
> >
> https://github.com/espressif/esp-hal-3rdparty/tree/release/v5.1.c/components/hal
> > >>> > > > > (essentially, header files from
> > >>> `components/hal/<chip>/include/hal`,
> > >>> > > > except
> > >>> > > > > for some of the sources files that use the hal functions at
> > >>> > > > > `components/hal` to implement some function we may use). You
> > can
> > >>> > take a
> > >>> > > > > look at the branch `
> > >>> > > > >
> > >>> >
> > https://github.com/espressif/esp-hal-3rdparty/commits/release/v5.1.c`
> <https://github.com/espressif/esp-hal-3rdparty/commits/release/v5.1.c>
> > <https://github.com/espressif/esp-hal-3rdparty/commits/release/v5.1.c>
> > >>> <
> https://github.com/espressif/esp-hal-3rdparty/commits/release/v5.1.c>
> > >>> > <
> > https://github.com/espressif/esp-hal-3rdparty/commits/release/v5.1.c>
> > >>> > > <
> > >>> https://github.com/espressif/esp-hal-3rdparty/commits/release/v5.1.c
> >
> > >>> > > > <
> > >>> https://github.com/espressif/esp-hal-3rdparty/commits/release/v5.1.c
> >
> > >>> > > > > <
> > >>> >
> https://github.com/espressif/esp-hal-3rdparty/commits/release/v5.1.c
> > >
> > >>> > > > and
> > >>> > > > > especially the commits beginning
> > >>> > > > > with faaa46ebfb37fba4250de831efbbf2862958c344 to check the
> kind
> > >>> of
> > >>> > > > changes
> > >>> > > > > we do in hal. Essentially, we create a wrapper layer to make
> it
> > >>> > > > independent
> > >>> > > > > of the host OS.
> > >>> > > > >
> > >>> > > > > *Drivers must always be implemented on NuttX!*
> > >>> > > > >
> > >>> > > > > That being said, you can either 1) try to adapt the
> > >>> implementation of
> > >>> > > > other
> > >>> > > > > devices to use the HAL functions or 2) get some inspiration
> on
> > >>> how
> > >>> > IDF
> > >>> > > > > implements PM. I'd stick with the 2nd option before simply
> > >>> trying to
> > >>> > > > adapt
> > >>> > > > > an existing implementation (from ESP32-C3 legacy or from
> > >>> > > ESP32/ESP32-S3).
> > >>> > > > >
> > >>> > > > > Best regards,
> > >>> > > > >
> > >>> > > > > Em qua., 23 de out. de 2024 às 13:35, Felipe Moura Oliveira <
> > >>> > > > > moura....@gmail.com> escreveu:
> > >>> > > > >
> > >>> > > > > > Hello Tiago.
> > >>> > > > > >
> > >>> > > > > > Thank you for clarification, I will follow your
> instructions.
> > >>> > > > > >
> > >>> > > > > > Em qua., 23 de out. de 2024 às 13:01, Tiago Medicci
> Serrano <
> > >>> > > > > > tiago.medi...@gmail.com> escreveu:
> > >>> > > > > >
> > >>> > > > > > > Hi Felipe,
> > >>> > > > > > >
> > >>> > > > > > > Just complementing: use your forked version of the HAL
> > >>> during the
> > >>> > > > > > > development. As soon as you have a working version, you
> can
> > >>> > submit
> > >>> > > on
> > >>> > > > > the
> > >>> > > > > > > official repository.
> > >>> > > > > > >
> > >>> > > > > > > Best regards,
> > >>> > > > > > >
> > >>> > > > > > > Em qua., 23 de out. de 2024 às 12:58, Tiago Medicci
> > Serrano <
> > >>> > > > > > > tiago.medi...@gmail.com> escreveu:
> > >>> > > > > > >
> > >>> > > > > > > > Hi Felipe,
> > >>> > > > > > > >
> > >>> > > > > > > > Thanks for asking! You should follow the path using the
> > >>> > functions
> > >>> > > > on
> > >>> > > > > > > > esp-hal-3rdparty. You can fork the repository and use
> > >>> > > > > > > >
> > >>> > >
> `ESP_HAL_3RDPARTY_VERSION=b4c723a119344b4b71d69819019d55637fb570fd
> > >>> > > > > > > > ESP_HAL_3RDPARTY_URL="g...@github.com:
> > >>> > > > tmedicci/esp-hal-3rdparty.git"`
> > >>> > > > > > env
> > >>> > > > > > > > vars (globally or before the make command) to use your
> > >>> version
> > >>> > of
> > >>> > > > the
> > >>> > > > > > > HAL.
> > >>> > > > > > > >
> > >>> > > > > > > > I just wanted to share some thoughts: using the HAL
> > >>> enables us
> > >>> > to
> > >>> > > > > make
> > >>> > > > > > > the
> > >>> > > > > > > > feature available for all the Espressif devices (please
> > >>> don't
> > >>> > > > bother
> > >>> > > > > > with
> > >>> > > > > > > > that now, as soon as you submit it, we can test for the
> > >>> other
> > >>> > > > devices
> > >>> > > > > > and
> > >>> > > > > > > > eventually make any adjustments). Although it's
> possible
> > to
> > >>> > > > > reimplement
> > >>> > > > > > > > these functions on NuttX, we don't recommend that
> because
> > >>> of
> > >>> > the
> > >>> > > > > first
> > >>> > > > > > > > statement (the ability to use for the other devices):
> in
> > >>> that
> > >>> > > case
> > >>> > > > we
> > >>> > > > > > > > wouldn't be able to support the feature. You can take a
> > >>> look on
> > >>> > > IDF
> > >>> > > > > for
> > >>> > > > > > > > some inspiration on how it's implemented.
> > >>> > > > > > > >
> > >>> > > > > > > > Please let me know if you have any questions.
> > >>> > > > > > > >
> > >>> > > > > > > > Best regards,
> > >>> > > > > > > >
> > >>> > > > > > > > Em qua., 23 de out. de 2024 às 12:38, Felipe Moura
> > >>> Oliveira <
> > >>> > > > > > > > moura....@gmail.com> escreveu:
> > >>> > > > > > > >
> > >>> > > > > > > >> Hello everyone,
> > >>> > > > > > > >>
> > >>> > > > > > > >> Our project has reached a point where we need the
> Power
> > >>> > Manager
> > >>> > > > > > > >> functionality, which is not yet available in the
> > ESP32C6.
> > >>> I am
> > >>> > > > > > studying
> > >>> > > > > > > to
> > >>> > > > > > > >> start the implementation, but I am confused about the
> > >>> correct
> > >>> > > way
> > >>> > > > to
> > >>> > > > > > > >> approach this.
> > >>> > > > > > > >>
> > >>> > > > > > > >> There is a Power Manager implementation for the
> ESP32C3,
> > >>> but
> > >>> > it
> > >>> > > > > seems
> > >>> > > > > > to
> > >>> > > > > > > >> follow the legacy methodology. In fact, the file
> > >>> > esp32c3_idle.c
> > >>> > > is
> > >>> > > > > > > located
> > >>> > > > > > > >> in the path arch/risc-v/src/esp32c3-legacy. In this
> > >>> > methodology,
> > >>> > > > > > > functions
> > >>> > > > > > > >> are re-implemented from the Espressif driver. For
> > >>> example, the
> > >>> > > > > > function
> > >>> > > > > > > >> esp32c3_light_sleep_start(), which is currently
> > available
> > >>> in
> > >>> > > > > > > >> esp32c6/esp-hal-3rdparty/.../sleep_modes.c.
> > >>> > > > > > > >>
> > >>> > > > > > > >> I tried using the implementations from
> esp-hal-3rdparty
> > to
> > >>> > > develop
> > >>> > > > > the
> > >>> > > > > > > >> Power Manager for the ESP32C6 in NuttX, but the files
> > >>> still
> > >>> > have
> > >>> > > > > many
> > >>> > > > > > > >> dependencies on items that are not present in NuttX.
> > >>> > > > > > > >>
> > >>> > > > > > > >> My question is: Should I try to make the Power Manager
> > >>> work
> > >>> > > using
> > >>> > > > > the
> > >>> > > > > > > >> functions in esp-hal-3rdparty, even if it requires
> > making
> > >>> > > changes
> > >>> > > > to
> > >>> > > > > > the
> > >>> > > > > > > >> 3rd-party code? Or should I re-implement the functions
> > >>> within
> > >>> > > > NuttX,
> > >>> > > > > > > even
> > >>> > > > > > > >> if, in this case, there are functions with the same
> > scope
> > >>> and
> > >>> > > > > > > >> implementation in different files, where one is
> > compiled,
> > >>> and
> > >>> > > the
> > >>> > > > > > other
> > >>> > > > > > > is
> > >>> > > > > > > >> not?
> > >>> > > > > > > >>
> > >>> > > > > > > >>
> > >>> > > > > > > >> --
> > >>> > > > > > > >> *Felipe Moura de Oliveira*
> > >>> > > > > > > >> *Universidade Federal de Minas Gerais*
> > >>> > > > > > > >> Linkedin <
> > >>> > https://www.linkedin.com/in/felipe-oliveira-75a651a0>
> > >>> > > > > > > >> <https://twitter.com/FelipeMOliveir?lang=pt-br>
> > >>> > > > > > > >>
> > >>> > > > > > > >
> > >>> > > > > > > >
> > >>> > > > > > > > --
> > >>> > > > > > > > Tiago Medicci Serrano
> > >>> > > > > > > >
> > >>> > > > > > > > Embedded Software Engineer
> > >>> > > > > > > > MSc Electronics/Microelectronics
> > >>> > > > > > > > m: +55 (19) 981403886 <+55+(19)+981403886>
> > >>> > > > > > > > e: tiago.medi...@gmail.com
> > >>> > > > > > > > a: Campinas, Brazil
> > >>> > > > > > > > Follow me:
> > >>> > > > > > > > <https://www.linkedin.com/in/tiago-serrano-924458b6>
> > >>> > > > > > > > <https://github.com/tmedicci>
> > >>> > > > > > > >
> > >>> > > > > > >
> > >>> > > > > > >
> > >>> > > > > > > --
> > >>> > > > > > > Tiago Medicci Serrano
> > >>> > > > > > >
> > >>> > > > > > > Embedded Software Engineer
> > >>> > > > > > > MSc Electronics/Microelectronics
> > >>> > > > > > > m: +55 (19) 981403886 <+55+(19)+981403886>
> > >>> > > > > > > e: tiago.medi...@gmail.com
> > >>> > > > > > > a: Campinas, Brazil
> > >>> > > > > > > Follow me:
> > >>> > > > > > > <https://www.linkedin.com/in/tiago-serrano-924458b6>
> > >>> > > > > > > <https://github.com/tmedicci>
> > >>> > > > > > >
> > >>> > > > > >
> > >>> > > > > >
> > >>> > > > > > --
> > >>> > > > > > *Felipe Moura de Oliveira*
> > >>> > > > > > *Universidade Federal de Minas Gerais*
> > >>> > > > > > Linkedin <
> > https://www.linkedin.com/in/felipe-oliveira-75a651a0
> > >>> >
> > >>> > > > > > <https://twitter.com/FelipeMOliveir?lang=pt-br>
> > >>> > > > > >
> > >>> > > > >
> > >>> > > > >
> > >>> > > > > --
> > >>> > > > > Tiago Medicci Serrano
> > >>> > > > >
> > >>> > > > > Embedded Software Engineer
> > >>> > > > > MSc Electronics/Microelectronics
> > >>> > > > > m: +55 (19) 981403886 <+55+(19)+981403886>
> > >>> > > > > e: tiago.medi...@gmail.com
> > >>> > > > > a: Campinas, Brazil
> > >>> > > > > Follow me:
> > >>> > > > > <https://www.linkedin.com/in/tiago-serrano-924458b6>
> > >>> > > > > <https://github.com/tmedicci>
> > >>> > > > >
> > >>> > > >
> > >>> > > >
> > >>> > > > --
> > >>> > > > *Felipe Moura de Oliveira*
> > >>> > > > *Universidade Federal de Minas Gerais*
> > >>> > > > Linkedin <https://www.linkedin.com/in/felipe-oliveira-75a651a0
> >
> > >>> > > > <https://twitter.com/FelipeMOliveir?lang=pt-br>
> > >>> > > >
> > >>> > >
> > >>> > >
> > >>> > > --
> > >>> > > Tiago Medicci Serrano
> > >>> > >
> > >>> > > Embedded Software Engineer
> > >>> > > MSc Electronics/Microelectronics
> > >>> > > m: +55 (19) 981403886 <+55+(19)+981403886>
> > >>> > > e: tiago.medi...@gmail.com
> > >>> > > a: Campinas, Brazil
> > >>> > > Follow me:
> > >>> > > <https://www.linkedin.com/in/tiago-serrano-924458b6>
> > >>> > > <https://github.com/tmedicci>
> > >>> > >
> > >>> >
> > >>> >
> > >>> > --
> > >>> > *Felipe Moura de Oliveira*
> > >>> > *Universidade Federal de Minas Gerais*
> > >>> > Linkedin <https://www.linkedin.com/in/felipe-oliveira-75a651a0>
> > >>> > <https://twitter.com/FelipeMOliveir?lang=pt-br>
> > >>> >
> > >>>
> > >>
> > >>
> > >> --
> > >> *Felipe Moura de Oliveira*
> > >> *Universidade Federal de Minas Gerais*
> > >> Linkedin <https://www.linkedin.com/in/felipe-oliveira-75a651a0>
> > >> <https://twitter.com/FelipeMOliveir?lang=pt-br>
> > >>
> > >
> > >
> > > --
> > > *Felipe Moura de Oliveira*
> > > *Universidade Federal de Minas Gerais*
> > > Linkedin <https://www.linkedin.com/in/felipe-oliveira-75a651a0>
> > > <https://twitter.com/FelipeMOliveir?lang=pt-br>
> > >
> >
> >
> > --
> > *Felipe Moura de Oliveira*
> > *Universidade Federal de Minas Gerais*
> > Linkedin <https://www.linkedin.com/in/felipe-oliveira-75a651a0>
> > <https://twitter.com/FelipeMOliveir?lang=pt-br>
> >
>
--
*Felipe Moura de Oliveira*
*Universidade Federal de Minas Gerais*
Linkedin <https://www.linkedin.com/in/felipe-oliveira-75a651a0>
<https://twitter.com/FelipeMOliveir?lang=pt-br>
