[问答]

调试RT-Thread stdio，echo命令写入失败，失败以后shell就是卡死无法输入怎么解决？

问答对人有帮助，内容完整，我也想知道答案 0 开发环境：RT-Thread stdio、源码4.1、使用的硬石YS-F4Pro开发板、芯片是STM32f407、U盘是USB2.0的。问题：U盘可以正常挂载和枚举，文件系统挂载也正常，可以使用cat命令查看U盘内文件内容，但是echo命令写入失败（用命令与程序测试均尝试过），失败以后shell就是卡死无法输入。请大家看下我的现象和分析，帮忙给点思路或者解决方法。调试过程：正常mount U盘如下： \| / - RT - Thread Operating System / \| 4.1.0 build Jun 15 2022 16:43:48 2006 - 2022 Copyright by RT-Thread team [I/SFUD] Find a Boya BY25Q128AS flash chip. Size is 16777216 bytes. [I/SFUD] W25Q128 flash device is initialize succusb connected port 1 status 0x10201 ess. [I/SFUD] Probe SPI flash W25Q128 by SPI device spi10 success. [D/FAL] (fal_flash_init:49) Flash device \| onchip_flash_16k \| addr: 0x08000000 \| len: 0x00010000 \| blk_size: 0x00004000 \|initialized finish. [D/FAL] (fal_flash_init:49) Flash device \| onchip_flash_64k \| addr: 0x08010000 \| len: 0x00010000 \| blk_size: 0x00010000 \|initialized finish. [D/FAL] (fal_flash_init:49) Flash device \| onchip_flash_128k \| addr: 0x08020000 \| len: 0x000e0000 \| blk_size: 0x00020000 \|initialized finish. [D/FAL] (fal_flash_init:49) Flash device \| W25Q128 \| addr: 0x00000000 \| len: 0x01000000 \| blk_size: 0x00001000 \|initialized finish. [I/FAL] ==================== FAL partition table ==================== [I/FAL] \| name \| flash_dev \| offset \| length \| [I/FAL] ------------------------------------------------------------- [I/FAL] \| bootloader \| onchip_flash_16k \| 0x00000000 \| 0x00010000 \| [I/FAL] \| param \| onchip_flash_64k \| 0x00000000 \| 0x00010000 \| [I/FAL] \| app \| onchip_flash_128k \| 0x00000000 \| 0x000e0000 \| [I/FAL] \| easyflash \| W25Q128 \| 0x00000000 \| 0x00100000 \| [I/FAL] \| download \| W25Q128 \| 0x00100000 \| 0x00100000 \| [I/FAL] ============================================================= [I/FAL] RT-Thread Flash Abstraction Layer initialize success. [I/FAL] The FAL MTD NOR device (download) created successfully [I/app.filesystem] mount to '/flash' success! msh />reset port start enumnation ok pipe transform remain size,: 8 ok pipe transform remain size,: 0 ok reset port rt_usb_set_address ok pipe transform remain size,: 0 ok get device descriptor length 18 ok pipe transform remain size,: 18 ok pipe transform remain size,: 0 ok Vendor ID 0x951 Product ID 0x1665 ok pipe transform remain size,: 18 ok pipe transform remain size,: 0 ok ok pipe transform remain size,: 32 ok pipe transform remain size,: 0 ok ok pipe transform remain size,: 0 ok rt_usb_get_interface_descriptor: 0 interface class 0x8, subclass 0x6 rt_usb_get_endpoint_descriptor: 0 rt_usb_get_endpoint_descriptor: 1 subclass 6, protocal 80 rt_usbh_storage_run rt_usb_get_endpoint_descriptor: 0 rt_usb_get_endpoint_descriptor: 1 rt_usbh_storage_reset ok pipe transform remain size,: 0 ok rt_usbh_storage_get_max_lun ok pipe transform remain size,: 1 ok pipe transform remain size,: 0 ok rt_usbh_storage_inquiry pipe transform remain size,: 31 nak ok pipe transform remain size,: 36 ok pipe transform remain size,: 13 ok rt_usbh_storage_test_unit_ready pipe transform remain size,: 31 ok pipe transform remain size,: 13 ok rt_usbh_storage_get_capacity pipe transform remain size,: 31 ok pipe transform remain size,: 8 ok pipe transform remain size,: 13 ok capicity 15356160, block size 512 read partition table rt_usbh_storage_read10 pipe transform remain size,: 31 ok pipe transform remain size,: 512 ok pipe transform remain size,: 448 ok pipe transform remain size,: 384 ok pipe transform remain size,: 320 ok pipe transform remain size,: 256 ok pipe transform remain size,: 192 ok pipe transform remain size,: 128 ok pipe transform remain size,: 64 ok pipe transform remain size,: 13 ok finished reading partition rt_usbh_storage_read10 pipe transform remain size,: 31 ok pipe transform remain size,: 512 ok pipe transform remain size,: 448 ok pipe transform remain size,: 384 ok pipe transform remain size,: 320 ok pipe transform remain size,: 256 ok pipe transform remain size,: 192 ok pipe transform remain size,: 128 ok pipe transform remain size,: 64 ok pipe transform remain size,: 13 ok rt_usbh_storage_read10 pipe transform remain size,: 31 ok pipe transform remain size,: 512 ok pipe transform remain size,: 448 ok pipe transform remain size,: 384 ok pipe transform remain size,: 320 ok pipe transform remain size,: 256 ok pipe transform remain size,: 192 ok pipe transform remain size,: 128 ok pipe transform remain size,: 64 ok pipe transform remain size,: 13 ok Mount FAT on Udisk successful. mount阶段有的时候偶尔会有nak，但是都可以挂载成功，没有影响，nak原因暂时未知。正常读取1.txt文件如下： Mount FAT on Udisk successful. ls Directory /: dev flash udisk msh />cd udisk msh /udisk>ls Directory /udisk: rt_usbh_storage_read10 pipe transform remain size,: 31 ok pipe transform remain size,: 512 ok pipe transform remain size,: 448 ok pipe transform remain size,: 384 ok pipe transform remain size,: 320 ok pipe transform remain size,: 256 ok pipe transform remain size,: 192 ok pipe transform remain size,: 128 ok pipe transform remain size,: 64 ok pipe transform remain size,: 13 ok System Volume Inform 1.txt 12 msh /udisk>cat 1. msh /udisk>cat 1.txt rt_usbh_storage_read10 pipe transform remain size,: 31 ok pipe transform remain size,: 512 ok pipe transform remain size,: 448 ok pipe transform remain size,: 384 ok pipe transform remain size,: 320 ok pipe transform remain size,: 256 ok pipe transform remain size,: 192 ok pipe transform remain size,: 128 ok pipe transform remain size,: 64 ok pipe transform remain size,: 13 ok 123123123123 msh /udisk> 写入失败情况如下： msh /udisk>echo 2 2.txt rt_usbh_storage_write10 pipe transform remain size,: 31 ok pipe transform remain size,: 512 ok pipe transform remain size,: 448 ok pipe transform remain size,: 384 ok pipe transform remain size,: 320 ok pipe transform remain size,: 256 ok pipe transform remain size,: 192 ok pipe transform remain size,: 128 可以看到直接就卡死了，经过调试发现，此时在drv_pipe_xfer函数中死循环，循环时通过HAL_HCD_HC_GetState(&stm32_hhcd_fs, pipe->pipe_index)函数获取状态发现状态为URB_IDLE与HC_IDLE，进一步跟踪发现HAL_HCD_HC_SubmitRequest函数（具体代码如下）中将这2个状态设置为IDLE。 hhcd->hc[ch_num].xfer_buff = pbuff; hhcd->hc[ch_num].xfer_len = length; hhcd->hc[ch_num].urb_state = URB_IDLE; hhcd->hc[ch_num].xfer_count = 0U; hhcd->hc[ch_num].ch_num = ch_num; hhcd->hc[ch_num].state = HC_IDLE; 之后由于rt_completion_wait(&urb_completion, timeout);等不到完成量，完成量信号是在中断里面调用HAL_HCD_HC_NotifyURBChange_Callback发送出来的，但是一直没有中断发生，所以就以timeout（5S）时间一直循环，shell卡死应该就是没有对完成量的返回做处理。手头没有USB协议分析仪，没办法分析协议，不知道到底是什么原因导致了这样的情况发送，请大神们给点思路，或者遇到相同情况的说说如何解决？ 0
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