usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_submit_read_urb - usb_submit_urb failed: -19

usb_ch9344 1-2:1.0: ch9344_cmd_irq - usb_submit_urb failed: -19

usb 1-2: USB disconnect, device number 2

usb_ch9344 1-2:1.0: ch9344 usb device disconnect.

usb 1-2: new high-speed USB device number 3 using nuc980-ehci

usb_ch9344 1-2:1.0: ttyCH9344USB from 8 - 15: ch9344 device attached.

在armlinux環(huán)境下使用ch348接收7路串口數(shù)據(jù)，串口波特率為112500，接收一段時間后出現(xiàn)錯誤如上。

您好，如上提示信息為USB設(shè)備斷連，對應(yīng)系統(tǒng)日志為：“usb disconnect”，USB通道和串口通道并無直接關(guān)系，先看下上報disconnect后，設(shè)備是否可以自動重新枚舉并生成串口，若是，則原因可能為通訊過程中給芯片供電的3V3電源不穩(wěn)定導(dǎo)致。