[问答]

通过UART4获得输出，为什么无法输入任何内容？

142

问答对人有帮助，内容完整，我也想知道答案 0 我正在使用 STM32mp157c-ev1 开发板。我使用了 digi-key 的这个指南来安装 debian（ Debian: Getting Started with the STM32MP157 )，除了它说 stm32mp157c-dk2 的部分，我用适当的“-ev1”后缀替换了它。我也遵循了关于 Discovery kit 2 板的相同指南，并且它没有问题。问题是，当我尝试通过 minicom 通过 UART4 从板上启动时，虽然一切看起来都在正确启动（减去这个错误：错误无法将桥 /soc/dsi@5a000000 连接到编码器 DPI-31：- 517). 这意味着它向我显示登录提示，但我无法输入任何内容。我尝试将键盘连接到板上，但它似乎仍然没有收到任何输入。尝试通过 st-link 连接甚至更奇怪，因为它显示我根本没有输出（即使 CubeIDE 能够通过调试器检测到 ST-LINK S/N）。我什至从 CubeIDE 升级了 ST-LINK。输出： NOTICE: CPU: STM32MP157CAA Rev.B NOTICE: Model: STMicroelectronics STM32MP157C eval daughter on eval mother NOTICE: Board: MB1263 Var1.0 Rev.C-02 NOTICE: BL2: v2.5(release):v2.5 NOTICE: BL2: Built : 16:14:51, Oct 10 2022 NOTICE: BL2: Booting BL32 NOTICE: SP_MIN: v2.5(release):v2.5 NOTICE: SP_MIN: Built : 16:14:56, Oct 10 2022 U-Boot 2022.10 (Oct 10 2022 - 16:10:15 +0300) CPU: STM32MP157CAA Rev.B Model: STMicroelectronics STM32MP157C eval daughter on eval mother Board: stm32mp1 in trusted - stm32image mode (st,stm32mp157c-ev1) Board: MB1263 Var1.0 Rev.C-02 DRAM: 1 GiB Clocks: - MPU : 650 MHz - MCU : 208.878 MHz - AXI : 266.500 MHz - PER : 24 MHz - DDR : 533 MHz stmfx stmfx@42: STMFX id: 0x7b, fw version: 3.03 Core: 285 devices, 43 uclasses, devicetree: board WDT: Started watchdog@5a002000 with servicing (32s timeout) NAND: 1024 MiB MMC: STM32 SD/MMC: 0, STM32 SD/MMC: 1 Loading Environment from MMC... OK In: serial Out: serial Err: serial invalid MAC address 0 in OTP 00:00:00:00:00:00 Net: Error: ethernet@5800a000 address not set. No ethernet found. Hit any key to stop autoboot: 0 Boot over mmc0! switch to partitions #0, OK mmc0 is current device Scanning mmc 0:4... Found /boot/extlinux/extlinux.conf Retrieving file: /boot/extlinux/extlinux.conf 1: Linux 5.15.65-armv7-lpae-x30 Retrieving file: /boot/vmlinuz-5.15.65-armv7-lpae-x30 append: console=ttySTM0,115200 root=/dev/mmcblk0p4 ro rootfstype=ext4 rootwait Retrieving file: /boot/dtbs/5.15.65-armv7-lpae-x30/stm32mp157c-ev1.dtb Kernel image @ 0xc2000000 [ 0x000000 - 0xb93200 ] ## Flattened Device Tree blob at c4000000 Booting using the fdt blob at 0xc4000000 Loading Device Tree to cffe8000, end cffff920 ... OK optee optee: OP-TEE api uid mismatch optee optee: OP-TEE api uid mismatch Starting kernel ... [ 0.000000] Booting Linux on physical CPU 0x0 . . . . . [ OK ] Started WPA supplicant. [ OK ] Started Authorization Manager. Starting Modem Manager... [ OK ] Finished Remove Stale Onli…ext4 Metadata Check Snapshots. [ OK ] Started Network Manager. [ OK ] Reached target Network. Starting A high performanc… and a reverse proxy server... Starting OpenBSD Secure Shell server... Starting Permit User Sessions... [ OK ] Started User Login Manage [ OK ] Finished Permit User Sessions. [ OK ] Started Getty on tty1. [ OK ] Started Modem Manager. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started A high performance…er and a reverse proxy server. [ OK ] Started Hostname Service. Starting Network Manager Script Dispatcher Service... [ OK ] Started Network Manager Script Dispatcher Service. [ OK ] Created slice system-systemdx2dbacklight.slice. [ 32.935276] stm32-rproc 10000000.m4: wdg irq registered [ 32.941476] remoteproc remoteproc0: m4 is available [ 32.958564] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517 Starting Load/Save Screen …f backlight:panel-backlight... [ OK ] Finished Load/Save Screen … of backlight:panel-backlight. [ 33.177508] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517 [ OK ] Found device /dev/ttySTM0. [ OK ] Started Serial Getty on ttySTM0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Finished Update UTMP about System Runlevel Changes. [ 33.651687] dwc2 49000000.usb-otg: supply vusb_d not found, using dummy regulator [ 33.684404] dwc2 49000000.usb-otg: supply vusb_a not found, using dummy regulator [ 33.826043] dwc2 49000000.usb-otg: EPs: 9, dedicated fifos, 952 entries in SPRAM [ 33.860157] dwc2 49000000.usb-otg: DWC OTG Controller [ 33.870075] dwc2 49000000.usb-otg: new USB bus registered, assigned bus number 2 [ 33.906169] dwc2 49000000.usb-otg: irq 51, io mem 0x49000000 [ 33.926645] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.15 [ 33.953543] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 33.969347] usb usb2: Product: DWC OTG Controller [ 33.982103] usb usb2: Manufacturer: Linux 5.15.65-armv7-lpae-x30 dwc2_hsotg [ 33.996095] usb usb2: SerialNumber: 49000000.usb-otg [ 34.007656] hub 2-0:1.0: USB hub found [ 34.018201] hub 2-0:1.0: 1 port detected [ 34.040081] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517 [ 34.059224] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517 Debian GNU/Linux 11 arm ttySTM0 default username:password is [debian:temppwd] arm login: [ 36.392709] stm32-dwmac 5800a000.ethernet eth0: PHY [stmmac-0:00] driver [RTL8211E Gigabit Ethernet] (irq=POLL) [ 36.411191] stm32-dwmac 5800a000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0 [ 36.425124] dwmac4: Master AXI performs any burst length [ 36.434808] stm32-dwmac 5800a000.ethernet eth0: No Safety Features support found [ 36.658599] stm32-dwmac 5800a000.ethernet eth0: IEEE 1588-2008 Advanced Timestamp supported [ 36.670724] stm32-dwmac 5800a000.ethernet eth0: registered PTP clock [ 36.676992] stm32-dwmac 5800a000.ethernet eth0: configuring for phy/rgmii-id link mode [ 40.780334] stm32-dwmac 5800a000.ethernet eth0: Link is Up - 1Gbps/Full - flow control rx/tx [ 40.787539] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 41.015597] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517 [ 41.044836] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517 [ 43.278419] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517 [ 43.353221] spi-nor spi0.0: mx66l51235f (65536 Kbytes) [ 43.386430] input: pmic_onkey as /devices/platform/soc/5c002000.i2c/i2c-2/2-0033/5c002000.i2c:stpmic@33:onkey/input/input0 [ 43.425684] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517 [ 43.503909] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517 [ 43.538977] spi-nor spi0.1: mx66l51235f (65536 Kbytes) [ 43.615948] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517 [ 44.201364] input: Microsoft Microsoft 3-Button Mouse with IntelliEye(TM) as /devices/platform/soc/5800d000.usb/usb1/1-1/1 [ 44.292375] hid-generic 0003:045E:0040.0001: input,hidraw0: USB HID v1.10 Mouse [Microsoft Microsoft 3-Button Mouse with 0 [ 44.343737] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517 [ 44.379708] input: DELL Dell USB Entry Keyboard as /devices/platform/soc/5800d000.usb/usb1/1-1/1-1.3/1-1.3:1.0/0003:413C:2 [ 44.479567] hid-generic 0003:413C:2107.0002: input,hidraw1: USB HID v1.11 Keyboard [DELL Dell USB Entry Keyboard] on usb-0 [ 44.498558] [drm:drm_bridge_attach] ERROR failed to attach bridge /soc/dsi@5a000000 to encoder DPI-31: -517' 0
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答案对人有帮助，有参考价值 0 这是 minicom 中的一个不幸的默认配置。按 Ctrl+A 和 O 转到 mincom 的配置 -> 串行端口设置并禁用硬件流控制。这解决了 UART 的仅输出问题，但我仍然没有使用 ST-LINK 获得任何输出。

2022-12-5 10:35:51 评论举报王涛