[BUG] ESP32C6 - UsbConsole feature not working

[FelipeMdeO]

Description / Steps to reproduce the issue

Hello All,

I am trying to use esp32c6 usbconsole example but the shell is stucking after I try send any character.
I tried with esp32c3 and everything is going well there.

I am investigating the issue, and trying to solve, if you have any tips, please feel free to share.

Steps to reproduce:
1 . ./tools/configure.sh esp32c6-devkitc:usbconsole
2 . connect to the board
3. inset any character and press enter. Shell will stuck.

@eren-terzioglu and @tmedicci will be good receive your help.

On which OS does this issue occur?

[OS: Linux]

What is the version of your OS?

ubuntu 24.0

NuttX Version

master

Issue Architecture

[Arch: risc-v]

Issue Area

[Area: Drivers]

Host information

Esptool version:
4.8.dev4

HAL version:
sync/release_v5.1.c-nuttx-20230814-1576-g87ccbf88b6

CHIP ID:
ESP32-C6 has no Chip ID. Reading MAC instead.

Flash ID:
Manufacturer: c8
Device: 4017

Verification

• I have verified before submitting the report.

[tmedicci]

Hi @FelipeMdeO !

Thanks for reporting. We'll talk about it internally and address it according to our schedule.

[FelipeMdeO]

Hello.

I tried to build exactly commit that this feature was added:
git checkout 86efbcb -- apps
git checkout 9bd1d5d -- nuttx

It is so old and I cannot build, @acassis can you help me, please:

./tools/configure.sh esp32c6-generic:usbconsole
make CROSSDEV=riscv-none-elf-

I am facing build issues below:

CC:  clock/clock_settime.c /home/felipe-moura/nuttxspace/nuttx/include/arch/irq.h: Assembler messages:
/home/felipe-moura/nuttxspace/nuttx/include/arch/irq.h:675: Error: unrecognized opcode `csrrc s1,mstatus,s1', extension `zicsr' required
/home/felipe-moura/nuttxspace/nuttx/include/arch/irq.h:700: Error: unrecognized opcode `csrw mstatus,s1', extension `zicsr' required
make[1]: *** [Makefile:60: clock_settime.o] Error 1
make: *** [tools/LibTargets.mk:65: sched/libsched.a] Error 2

Also, I tried checkout and run release/12.3 - the first release with this feature. There the usb console is stucked too.

Release 12.5 is the first release with esp32c6-usbconsole configuration, but this release has the same issue than master.

ABOUT ESP32C3

I am able to run properly usbconsole only using esp32c3-generic configuration, esp32c3-devkit isn't work.

[FelipeMdeO]

Hello All.

I want to share an strange behavior.
UsbConsole works properly when I remove compile optimization, in other words, the usbconsole stop to work when optimization flag change to -O2.

You can reproduce it going to menuconfig and changing Optimization Level to DEBUG_NOOPT.

I will continue the investigation.

[eren-terzioglu]

Hello.

I tried to build exactly commit that this feature was added: git checkout 86efbcb -- apps git checkout 9bd1d5d -- nuttx

It is so old and I cannot build, @acassis can you help me, please:

./tools/configure.sh esp32c6-generic:usbconsole make CROSSDEV=riscv-none-elf-

I am facing build issues below:

CC:  clock/clock_settime.c /home/felipe-moura/nuttxspace/nuttx/include/arch/irq.h: Assembler messages:
/home/felipe-moura/nuttxspace/nuttx/include/arch/irq.h:675: Error: unrecognized opcode `csrrc s1,mstatus,s1', extension `zicsr' required
/home/felipe-moura/nuttxspace/nuttx/include/arch/irq.h:700: Error: unrecognized opcode `csrw mstatus,s1', extension `zicsr' required
make[1]: *** [Makefile:60: clock_settime.o] Error 1
make: *** [tools/LibTargets.mk:65: sched/libsched.a] Error 2

Also, I tried checkout and run release/12.3 - the first release with this feature. There the usb console is stucked too.

Release 12.5 is the first release with esp32c6-usbconsole configuration, but this release has the same issue than master.

ABOUT ESP32C3

I am able to run properly usbconsole only using esp32c3-generic configuration, esp32c3-devkit isn't work.

Hello,

The reason about build error might related to compiler changes between versions. About esp32c3-devkit; it is old approach (not uses esp-hal-3rdparty properly), it might not work as expected and it is not high priority in our ToDo list.