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问题答疑 Q&A

defmt-test 编译异常

报错信息

  = note: rust-lld: error: memory.x:4: region 'FLASH' already defined
          >>>   FLASH : ORIGIN = 0x08000000, LENGTH = 64K
          >>>                                         ^

          flip-link: the native linker failed to link the program normally; please check your project configuration and linker scripts

解决方案

在 .cargo/config.toml 文件中包含了两个目标都生效了, 导致 memory.x 被读取了两次。

参考资料:

[target.thumbv7m-none-eabi]
# runner = "qemu-system-arm -cpu cortex-m3 -machine lm3s6965evb -nographic -semihosting-config enable=on,target=native -kernel"
# runner = 'arm-none-eabi-gdb'
rustflags = [
    "-C",
    "linker=flip-link",
    "-C",
    "link-arg=-Tlink.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",
    "-C",
    "link-arg=-Tdefmt.x",
]

# 该配置只能写一份, 否则 memory.x 会导致异常
# [target.'cfg(all(target_arch = "arm", target_os = "none"))']
# # TODO: replace `$CHIP` with your chip's name (see `probe-run --list-chips` output)
# runner = "probe-run --chip STM32F103C8"
# 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",
# ]

cargo test --target thumbv7m-none-eabi -p testsuite 单元测试异常

问题

    Finished test [optimized + debuginfo] target(s) in 0.04s
     Running unittests src/lib.rs (target/thumbv7m-none-eabi/debug/deps/testsuite-5c8e8671ba35a44f)
error: test failed, to rerun pass `-p testsuite --lib`

Caused by:
  could not execute process `/home/one/Documents/code/RustEmbedProject/stm32f103-tutorial/target/thumbv7m-none-eabi/debug/deps/testsuite-5c8e8671ba35a44f` (never executed)

Caused by:
  Exec format error (os error 8)

解决

修改 .cargo/config.toml 文件，添加 runner 配置。

[target.thumbv7m-none-eabi]
# QEUM
# runner = "qemu-system-arm -cpu cortex-m3 -machine lm3s6965evb -nographic -semihosting-config enable=on,target=native -kernel"
# GDB
# runner = 'arm-none-eabi-gdb'
# 真机测试
runner = "probe-run --chip STM32F103C8"  # <--- 取消注释
rustflags = [
    "-C",
    "linker=flip-link",
    "-C",
    "link-arg=-Tlink.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",
    "-C",
    "link-arg=-Tdefmt.x",
]

解决 2

执行以下指令进行替换。

cargo test --target thumbv7m-none-eabi -p testsuite probe-run -- --chip STM32F103C8

cannot find linker script defmt.x

错误

  = note: rust-lld: error: cannot find linker script defmt.x

          flip-link: the native linker failed to link the program normally; please check your project configuration and linker scripts


error: aborting due to previous error

       Error Failed to run cargo build: exit code = Some(101).

解决

defmt 与 embed 的 crate 存在冲突，因此需要注释掉 defmt 的配置。

[target.thumbv7m-none-eabi]
# QEUM
# runner = "qemu-system-arm -cpu cortex-m3 -machine lm3s6965evb -nographic -semihosting-config enable=on,target=native -kernel"
# GDB
# runner = 'arm-none-eabi-gdb'
# 真机测试
# runner = "probe-run --chip STM32F103C8"
rustflags = [
    "-C",
    "linker=flip-link",
    "-C",
    "link-arg=-Tlink.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",
    # "-C",  # <--- 注释
    # "link-arg=-Tdefmt.x",  # <--- 注释
]

烧录错误

  • embed 烧录错误
 Error failed attaching to target

             Caused by:
                 0: An ARM specific error occured.
                 1: The debug probe encountered an error.
                 2: An error specific to a probe type occurred
                 3: Command failed with status SwdApFault
  • 错误 1
 Error failed attaching to target

             Caused by:
                 0: An ARM specific error occured.
                 1: The debug probe encountered an error.
                 2: An error specific to a probe type occurred
                 3: Command failed with status SwdApFault
  • probe-run 烧录错误
Error: An ARM specific error occurred.

Caused by:
    0: The debug probe encountered an error.
    1: An error specific to a probe type occurred
    2: Command failed with status SwdDpWait

修复方式

  • 切换到 embed 的方式进行烧录；
  • 按住重置键，迅速烧录；
  • 如失败，多测试几次；

rust profiles 编译警告

错误信息

warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
package:   /home/one/Documents/code/RustEmbedProject/stm32f103-tutorial/app/basic/flash_tool_defmt/Cargo.toml

解决方案

删除所有子项目的 Cargo.toml 配置文件中的重复配置项。

解决方案 2

在工作空间的 Cargo.toml 配置文件中对 profiles 的配置进行覆盖。

如果你有一个名为 hardware 的 lib crate：

[profile.dev.overrides.hardware]
opt-level = 0