[STM32G431KBT] Can't flash quickstart

[evilGitHub]

I am trying to get the empty "stm32-hal-quickstart1" running on a Nucleo 32 G431 board. But the flashing process does not succeed. Is this something I can get help here or is this an issue for probe-rs?

• I have a STM32G431 Nucleo32 Board. (Chip is G431KBT)
• I updated the firmware of the onboard STLINK-V3E to the newest version.
• I installed the newest driver for the STLINK.
• If i run the command "probe-rs list" i get the following restult: The following debug probes were found: [0]: STLink V3 (VID: 0483, PID: 374e, Serial: 003C00173137510639383538, StLink)
• I configured the project according to the readme.
• If i run the command "cargo run --release" the exaple is compiled, it tries to flash but i get the following error: Error: The flashing procedure failed for 'target\thumbv7em-none-eabihf\release\project_name'.

Any advice is appreciated :)

Full output is:
Compiling defmt-parser v0.3.4
Compiling stm32-hal2 v1.8.1
Compiling project_name v0.1.0 (C:_Alles_Git\cryptems\tobi\rustM4f_test\stm32-hal-quickstart1)
warning: unused import: defmt::println
--> src\main.rs:13:5
|
13 | use defmt::println;
| ^^^^^^^^^^^^^^
|
= note: #[warn(unused_imports)] on by default

warning: unused imports: low_power, pac
--> src\main.rs:19:17
|
19 | use hal::{self, low_power, pac};
| ^^^^^^^^^ ^^^

warning: unused imports: PinMode, Pin, Port, self
--> src\init.rs:5:11
|
5 | dma::{self, Dma},
| ^^^^
6 | gpio::{Pin, PinMode, Port},
| ^^^ ^^^^^^^ ^^^^

warning: unused imports: DmaInput, DmaInterrupt, OutputSpeed, PinMode, Pin, Port, self
--> src\setup.rs:4:11
|
4 | dma::{self, DmaInput, DmaInterrupt},
| ^^^^ ^^^^^^^^ ^^^^^^^^^^^^
5 | gpio::{OutputSpeed, Pin, PinMode, Port},
| ^^^^^^^^^^^ ^^^ ^^^^^^^ ^^^^

warning: unused variable: cp
--> src\init.rs:15:9
|
15 | let cp = cortex_m::Peripherals::take().unwrap();
| ^^ help: if this is intentional, prefix it with an underscore: _cp
|
= note: #[warn(unused_variables)] on by default

warning: struct SystemStatus is never constructed
--> src\system_status.rs:1:12
|
1 | pub struct SystemStatus {}
| ^^^^^^^^^^^^
|
= note: #[warn(dead_code)] on by default

warning: project_name (bin "project_name") generated 6 warnings (run cargo fix --bin "project_name" to apply 5 suggestions)
Finished release [optimized + debuginfo] target(s) in 24.86s
Running probe-rs run --chip STM32G431KBT target\thumbv7em-none-eabihf\release\project_name
Erasing ✔ [00:00:02] [-----------------------------------------------------------------------------------------------------------------------------------] 0 B/10.00 KiB @ 4.97 KiB/s (eta 0s )
Programming ✔ [00:00:02] [------------------------------------------------------------------------------------------------------------------------------------] 0 B/ 0 B @ 0 B/s (eta 0s )Error: The flashing procedure failed for 'target\thumbv7em-none-eabihf\release\project_name'.

Caused by:
0: The initialization of the flash algorithm failed.
1: Something during the interaction with the core went wrong
2: A timeout occurred.
error: process didn't exit successfully: probe-rs run --chip STM32G431KBT target\thumbv7em-none-eabihf\release\project_name (exit code: 1)

[David O'Connor]

Can you please confirm the following:

Your .cargo/config.toml looks like this:

[target.'cfg(all(target_arch = "arm", target_os = "none"))']
runner = "probe-rs run --chip STM32G431CBUx" # to list chips, run `probe-run --list-chips.`
rustflags = [
  "-C", "linker=flip-link",
  "-C", "link-arg=-Tlink.x",
  "-C", "link-arg=-Tdefmt.x",
  "-C", "link-arg=--nmagic",
]

[build]
target = "thumbv7em-none-eabihf"

memory.x like this:

MEMORY
{
  FLASH : ORIGIN = 0x08000000, LENGTH = 128K
  RAM : ORIGIN = 0x20000000, LENGTH = 32K
}

Cargo.TOML dependencies section looks like this or similar:

[dependencies]
defmt = "^0.3.5"
defmt-rtt = "^0.4.0"
panic-probe = { version = "^0.3.0", features = ["print-defmt"] }

cortex-m = {version = "^0.7.7", features = ["critical-section-single-core"]}
cortex-m-rt = "0.7.3"
critical-section = "^1.1.2"

hal = { package = "stm32-hal2", version = "^1.8.1", features = ["g431", "g4rt", "usb", "can_fd_g"]}

[evilGitHub]

@David-OConnor Thank you for your answer. But that did not fix it. I tried with your settings but I think they are not correct for me as I have a G431KBTx and not a G431CBUx. So I tried yours and I tried this (both with same result):

.cargo/config.toml :

[target.'cfg(all(target_arch = "arm", target_os = "none"))']
# Change this runner as required for your MCU.
runner = "probe-rs run --chip STM32G431KBTx --probe 0483:374e --speed 1000" # to list chips, run `probe-rs chip list.`

rustflags = [
  "-C", "linker=flip-link",
  "-C", "link-arg=-Tlink.x",
  "-C", "link-arg=-Tdefmt.x",
  # This is needed if your flash or ram addresses are not aligned to 0x10000 in memory.x
  # See https://github.com/rust-embedded/cortex-m-quickstart/pull/95
  "-C", "link-arg=--nmagic",
]

[build]
# Change this target as required for your MCU.
target = "thumbv7em-none-eabihf" # Cortex-M4F and Cortex-M7F (eg F, L4, G4, H7)
# target = "thumbv6m-none-eabi"    # Cortex-M0 and Cortex-M0+ (eg G0)
# target = "thumbv8m.main-none-eabihf" # Cortex-M33F and Cortex-M35F (eg L5, U5, H5)

[alias]
rb = "run --bin"
rrb = "run --release --bin"
rr = "run --release"
br = "build --release"

memory.x :

MEMORY
{
  FLASH : ORIGIN = 0x08000000, LENGTH = 128K
  RAM : ORIGIN = 0x20000000, LENGTH = 22K
}

Cargo.TOML :

[dependencies]
defmt = "0.3.5"
defmt-rtt = "0.4.0"
panic-probe = { version = "0.3.0", features = ["print-defmt"] }

cortex-m = {version = "^0.7.7", features = ["critical-section-single-core"]}
cortex-m-rt = "0.7.3"
critical-section = "^1.1.2"

#rtic = { version = "^2.0.1", features = ["thumbv7-backend"] }

# Change this import as required for your MCU.
hal = { package = "stm32-hal2", version = "^1.8.1", features = ["g431", "g4rt"]}

Also I tired without the --probe and without the --speed option. I did confirm that I can flash this board with OpenOCD with a c program that is then executed. So board is not broken.

Additionally I tried this command:
probe-rs erase --chip STM32G431KBTx --probe 0483:374e --speed 1000
which resulted in the following output:
Error: The execution of 'init' failed with code 134217728. This might indicate a problem with the flash algorithm.

[David O'Connor]

Weird! No idea. Of note, I use the G431 (CBU) with ST-LinkV3 in several projects. If it's failing to flash, it likely has something to do with one of the configuration sections I posted.

Something else that may be related. Can you confirm you have these lines in main.rs?

use defmt_rtt as _;
use panic_probe as _;

#[defmt::panic_handler]
fn panic() -> ! {
    cortex_m::asm::udf()
}

Even less likely to be a factor, but... Some of the example codes enable the watchdog. If you have that in eg iwdg::setup(), try removing that.

Bottom line: I have no idea what's going on, but I can get it to work with a similar setup, so there's probably a simple fix somewhere.

[evilGitHub]

I used the empty example from here. I can confirm I have the lines you asked for. Also tried removing the watchdog setup line. Made no difference.

I also tried a second Nucleo Board with the same chip and had no luck either. At last I tried a Nucleo L432KC Board (different chip) and run the "probe-rs erase" command that worked. So it is either related to the Chips or the boards. I will post a issue at probe-rs repository and report back here if I get a solution from there.

Thank you for your time :)

[David O'Connor]

LMK what the problem ends up as!

[evilGitHub]

I opened an issue at probe-rs: probe-rs/probe-rs#2222

[evilGitHub]

This was caused a known bug in probe-rs which is already fixed in master branch but not released yet. Compiling and installing probe-rs from head of master solved this. Now this is working fine :) thanks again for your assistance!