EMTime/libopencm3
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

usb: Implemented support for sending the Microsoft OS-specific descriptor component of a platform capability descriptor

Browse Source
This commit is contained in:
dragonmux
2022-08-11 07:52:43 +01:00
committed by Piotr Esden-Tempski
parent c1247110d8
commit b7ddb7c7c0
3 changed files with 26 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
lib/usb/usb_standard.c
View File

@@ -38,8 +38,12 @@ LGPL License Terms @ref lgpl_license
#include <string.h>
#include <libopencm3/usb/usbd.h>
#include <libopencm3/usb/bos.h>
#include <libopencm3/usb/microsoft.h>
#include "usb_private.h"
static const usb_bos_uuid microsoft_os_descriptor_platform_capability_id =
MICROSOFT_OS_DESCRIPTOR_PLATFORM_CAPABILITY_ID;
int usbd_register_set_config_callback(usbd_device *usbd_dev,
usbd_set_config_callback callback)
{
@@ -149,8 +153,14 @@ static uint16_t build_devcap_platform(const usb_platform_device_capability_descr
len -= count;
const uint16_t total = count;
if (!memcmp(&plat->PlatformCapabilityUUID, &microsoft_os_descriptor_platform_capability_id, USB_BOS_UUID_SIZE)) {
const microsoft_os_descriptor_set_information *info = plat->CapabilityData;
count = MIN(len, MICROSOFT_OS_DESCRIPTOR_SET_INFORMATION_SIZE);
memcpy(buf + total, info, count);
return total + count;
}
return total;
return 0;
}
/* This can return 0 to indicate an error in the descriptor */