From fc2b399ac03b91339a1cb1bfd4d1a9ca87fe95c6 Mon Sep 17 00:00:00 2001 From: Loic Poulain Date: Thu, 25 Nov 2021 18:16:15 +0100 Subject: usb: gadget: Add CDC ACM function Add support for CDC ACM using the new UDC and gadget API. This protocol can be used for serial over USB data transfer and is widely supported by various OS (GNU/Linux, MS-Windows, OSX...). The usual purpose of such link is to access device debug console and can be useful for products not exposing regular UART to the user. A default stdio device named 'usbacm' is created, and can be used to redirect console to USB link over CDC ACM: > setenv stdin usbacm; setenv stdout usbacm Signed-off-by: Loic Poulain --- common/stdio.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'common/stdio.c') diff --git a/common/stdio.c b/common/stdio.c index 976f51c2527..063c659bbc3 100644 --- a/common/stdio.c +++ b/common/stdio.c @@ -380,6 +380,9 @@ int stdio_add_devices(void) serial_stdio_init(); #ifdef CONFIG_USB_TTY drv_usbtty_init(); +#endif +#ifdef CONFIG_USB_FUNCTION_ACM + drv_usbacm_init (); #endif if (IS_ENABLED(CONFIG_NETCONSOLE)) drv_nc_init(); -- cgit v1.2.3