raspberry-pi - 为什么我的 RPi UART0 (ttyAMA0) 在禁用蓝牙时会死机?
问题描述
我有一个树莓派 3 型号 b(Raspbian GNU/Linux 10(buster)),我想禁用连接到 UART0(引脚 8 和 10)的蓝牙模块以使用 UART0。当我添加dtoverlay=disable-bt
到 /boot/config.txt 的末尾并连接 UART 设备时,树莓派会冻结或将我退出。
有谁知道为什么会发生这种情况?
我也卸载了使用蓝牙的应用程序。我已经运行了以下命令:
sudo systemctl disable hciuart.service
sudo systemctl disable bluealsa.service
sudo systemctl disable bluetooth.service
我的/boot/config.txt
b 文件如下所示:
# For more options and information see
# http://rpf.io/configtxt
# Some settings may impact device functionality. See link above for details
# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1
# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
disable_overscan=1
# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16
# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720
# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1
# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1
# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2
# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4
# uncomment for composite PAL
#sdtv_mode=2
#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800
# Uncomment some or all of these to enable the optional hardware interfaces
dtparam=i2c_arm=on
#dtparam=i2s=on
dtparam=spi=on
# Uncomment this to enable infrared communication.
#dtoverlay=gpio-ir,gpio_pin=17
#dtoverlay=gpio-ir-tx,gpio_pin=18
# Additional overlays and parameters are documented /boot/overlays/README
# Enable audio (loads snd_bcm2835)
dtparam=audio=on
[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
dtoverlay=vc4-fkms-v3d
max_framebuffers=2
[all]
#dtoverlay=vc4-fkms-v3d
# Enable UART
enable_uart=1
任何帮助表示赞赏。
解决方案
我发现在中添加不必要的空格/boot/config.txt
会导致我的错误。
我曾写过:
dtoverlay = disable-bt
代替:
dtoverlay=disable-bt
此外,它有助于Pi > Preferences > RPi Configurations > Interfaces
确保串行端口已启用。
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