From 32f4aa6d053b8fba9d5d87f9b53a101db5a5800d Mon Sep 17 00:00:00 2001
From: sakumisu <1203593632@qq.com>
Date: Mon, 28 Oct 2024 14:52:59 +0800
Subject: [PATCH] update(core/usbd_core): implement USB_REQUEST_GET_INTERFACE
 request

---
 core/usbd_core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/core/usbd_core.c b/core/usbd_core.c
index ea471e54..8d502f4c 100644
--- a/core/usbd_core.c
+++ b/core/usbd_core.c
@@ -64,6 +64,7 @@ USB_NOCACHE_RAM_SECTION struct usbd_core_priv {
     bool test_req;
 #endif
     struct usbd_interface *intf[16];
+    uint8_t intf_altsetting[16];
     uint8_t intf_offset;
 
     struct usbd_tx_rx_msg tx_msg[CONFIG_USBDEV_EP_NUM];
@@ -703,11 +704,12 @@ static bool usbd_std_interface_req_handler(uint8_t busid, struct usb_setup_packe
             ret = false;
             break;
         case USB_REQUEST_GET_INTERFACE:
-            (*data)[0] = 0;
+            (*data)[0] = g_usbd_core[busid].intf_altsetting[intf_num];
             *len = 1;
             break;
 
         case USB_REQUEST_SET_INTERFACE:
+            g_usbd_core[busid].intf_altsetting[intf_num] = LO_BYTE(setup->wValue);
             usbd_set_interface(busid, setup->wIndex, setup->wValue);
             *len = 0;
             break;