Re: USB output in ucom
Emmanuel Dreyfus <[email protected]>
| Newsgroups | gmane.os.netbsd.devel.kernel |
|---|---|
| Message-ID | <[email protected]> |
On Sun, Jul 13, 2025 at 01:59:18PM +0200, Michael van Elst wrote: > usbd_setup_xfer() however rewrites the flags, so > it needs USBD_SYNCHRONOUS while usbd_create_xfer > probably doesn't. I had great success outputing stuff in ucom_attach(), however using it for console output works only for the first character (which is '['). I understand kprintf operates at IPL_HIGH, while the USB subssytem processes I/O at IPL_SOFTCLOCK. Does that mean I just cannot rely on USB for console output? -- Emmanuel Dreyfus [email protected]