hint about stack space

[Narukara]

I suggest adding a hint somewhere in the book that in this environment, threads have very limited stack space. So you may often encounter stack overflow problems. The stack size can be specified in this way:

thread::Builder::new().stack_size(4096).spawn(|| {
    // do something
})?;

[Gavin Cabbage]

Just starting the training and I found I needed to increase the system event task's stack size to get any the hardware-check example to work, otherwise I saw this error:

***ERROR*** A stack overflow in task sys_evt has been detected.

I added this line to sdkconfig.defaults after eventually finding this documentation:

CONFIG_ESP_SYSTEM_EVENT_TASK_STACK_SIZE=9216

It took me a while to piece this together so some hints for new users in the training materials themselves would be helpful for the next person struggling with this issue.

[Sergio Gasquez Arcos]

to

Just starting the training and I found I needed to increase the system event task's stack size to get any the hardware-check example to work, otherwise I saw this error:

***ERROR*** A stack overflow in task sys_evt has been detected.

I added this line to sdkconfig.defaults after eventually finding this documentation:

CONFIG_ESP_SYSTEM_EVENT_TASK_STACK_SIZE=9216

It took me a while to piece this together so some hints for new users in the training materials themselves would be helpful for the next person struggling with this issue.

Which devkit were you using?

[Gavin Cabbage]

@SergioGasquez I apologize I'm not sure how to answer your question , but here are the contents of the config files that hopefully include the info you're looking for:

cat .cargo/config.toml
[build]
target = "xtensa-esp32-espidf"

[target.xtensa-esp32-espidf]
linker = "ldproxy"
runner = "espflash --monitor"
# Future - necessary for the experimental "native build" of esp-idf-sys with ESP32C3
# See also https://github.com/ivmarkov/embuild/issues/16
rustflags = ["-C", "default-linker-libraries"]

[unstable]
build-std = ["std", "panic_abort"]
build-std-features = ["panic_immediate_abort"]

[env]
# Enables the esp-idf-sys "native" build feature (`cargo build --features native`) to build against ESP-IDF (v4.4.4)
ESP_IDF_VERSION = { value = "tag:v4.4.4" }

# These configurations will pick up your custom "sdkconfig.release", "sdkconfig.debug" or "sdkconfig.defaults[.*]" files
# that you might put in the root of the project
# The easiest way to generate a full "sdkconfig[.release|debug]" configuration (as opposed to manually enabling only the necessary flags via "sdkconfig.defaults[.*]"
# is by running "cargo pio espidf menuconfig" (that is, if using the pio builder)
#ESP_IDF_SDKCONFIG = { value = "./sdkconfig.release", relative = true }
#ESP_IDF_SDKCONFIG = { value = "./sdkconfig.debug", relative = true }
ESP_IDF_SDKCONFIG_DEFAULTS = { value = "./sdkconfig.defaults", relative = true }
# ESP-IDF will be installed in ~/.espressif so it can be reused across the different examples.
# See also https://github.com/esp-rs/esp-idf-sys#esp_idf_tools_install_dir-esp_idf_tools_install_dir
ESP_IDF_TOOLS_INSTALL_DIR = { value = "global" }

cat rust-toolchain.toml
[toolchain]
channel = "esp"

cat sdkconfig.defaults
# Rust often needs a bit of an extra main task stack size compared to C (the default is 3K)
CONFIG_ESP_MAIN_TASK_STACK_SIZE=14336
CONFIG_ESP_SYSTEM_EVENT_TASK_STACK_SIZE=9216

This setup is working for me as of a few days ago so I'll be continuing through the training materials soon.

[Sergio Gasquez Arcos]

I see you are using an ESP32, do you know the name of the development board that you are using?

[Gavin Cabbage]

Yes! It is a FireBeetle 2 from DFRobot.