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如何修复 PlatformIO Error: libusb_open() failed with LIBUSB_ERROR_ACCESS

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问题

当你尝试使用 PlatformIO 烧录固件时，你看到如下错误消息

platformio_libusb_error.txt
Building in release mode
Checking size .pio/build/nucleo_h743zi/firmware.elf
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM:   [=         ]   7.4% (used 38876 bytes from 524288 bytes)
Flash: [          ]   3.2% (used 67004 bytes from 2097152 bytes)
Configuring upload protocol...
AVAILABLE: blackmagic, cmsis-dap, jlink, mbed, stlink
CURRENT: upload_protocol = stlink
Uploading .pio/build/nucleo_h743zi/firmware.elf
xPack Open On-Chip Debugger 0.12.0-01004-g9ea7f3d64-dirty (2023-01-30-15:03)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
debug_level: 1

srst_only separate srst_nogate srst_open_drain connect_deassert_srst

Error: libusb_open() failed with LIBUSB_ERROR_ACCESS
Error: open failed
in procedure 'program'
** OpenOCD init failed **
shutdown command invoked

*** [upload] Error 1
======================================================================= [FAILED] Took 1.45 seconds =======================================================================

解决方案

你当前的系统用户没有 USB 设备的访问权限。要修复此问题，使用

add_user_to_plugdev.sh
sudo usermod -a -g plugdev $USER

注意，更改只有在你注销并重新登录后或重启后才会生效。

此外，你需要安装当前的 PlatformIO udev 规则：

install_platformio_udev_rules.sh
curl -fsSL https://raw.githubusercontent.com/platformio/platformio-core/develop/platformio/assets/system/99-platformio-udev.rules | sudo tee /etc/udev/rules.d/99-platformio-udev.rules

然后重启 udev：

restart_udev.sh
sudo systemctl restart udev

之后，拔下并重新插入连接到微控制器的 USB 线，或重启你的系统。

完成所有这些后，你的上传应该可以工作：

platformio_upload_success.txt
Checking size .pio/build/nucleo_h743zi/firmware.elf
Advanced Memory Usage is available via "PlatformIO Home > Project Inspect"
RAM:   [=         ]   7.4% (used 38876 bytes from 524288 bytes)
Flash: [          ]   3.2% (used 67004 bytes from 2097152 bytes)
Configuring upload protocol...
AVAILABLE: blackmagic, cmsis-dap, jlink, mbed, stlink
CURRENT: upload_protocol = stlink
Uploading .pio/build/nucleo_h743zi/firmware.elf
xPack Open On-Chip Debugger 0.12.0-01004-g9ea7f3d64-dirty (2023-01-30-15:03)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
debug_level: 1

srst_only separate srst_nogate srst_open_drain connect_deassert_srst

[stm32h7x.cpu0] halted due to debug-request, current mode: Thread
xPSR: 0x01000000 pc: 0x0800a0d0 msp: 0x24080000
** Programming Started **
Warn : Adding extra erase range, 0x08010880 .. 0x0801ffff
** Programming Finished **
** Verify Started **
** Verified OK **
** Resetting Target **
shutdown command invoked
=========================
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