add tuh_hid_itf_get_info() and change tuh_cdc_itf_get_info() to use new tuh_itf_info_t

4 files changed, 44 insertions, 16 deletions

diff --git a/src/class/cdc/cdc_host.c b/src/class/cdc/cdc_host.c
index d34662cb7..fee314823 100644
--- a/src/class/cdc/cdc_host.c
+++ b/src/class/cdc/cdc_host.c
@@ -127,15 +127,25 @@ uint8_t tuh_cdc_itf_get_index(uint8_t daddr, uint8_t itf_num)
   return TUSB_INDEX_INVALID_8;
 }
 
-bool tuh_cdc_itf_get_info(uint8_t idx, tuh_cdc_itf_info_t* info)
+bool tuh_cdc_itf_get_info(uint8_t idx, tuh_itf_info_t* info)
 {
   cdch_interface_t* p_cdc = get_itf(idx);
   TU_VERIFY(p_cdc && info);
 
-  info->daddr              = p_cdc->daddr;
-  info->bInterfaceNumber   = p_cdc->bInterfaceNumber;
-  info->bInterfaceSubClass = p_cdc->bInterfaceSubClass;
-  info->bInterfaceProtocol = p_cdc->bInterfaceProtocol;
+  info->daddr = p_cdc->daddr;
+
+  // re-construct descriptor
+  tusb_desc_interface_t* desc = &info->desc;
+  desc->bLength            = sizeof(tusb_desc_interface_t);
+  desc->bDescriptorType    = TUSB_DESC_INTERFACE;
+
+  desc->bInterfaceNumber   = p_cdc->bInterfaceNumber;
+  desc->bAlternateSetting  = 0;
+  desc->bNumEndpoints      = 2u + (p_cdc->ep_notif ? 1u : 0u);
+  desc->bInterfaceClass    = TUSB_CLASS_CDC;
+  desc->bInterfaceSubClass = p_cdc->bInterfaceSubClass;
+  desc->bInterfaceProtocol = p_cdc->bInterfaceProtocol;
+  desc->iInterface         = 0; // not used yet
 
   return true;
 }
diff --git a/src/class/cdc/cdc_host.h b/src/class/cdc/cdc_host.h
index 03f32e542..a1e78f158 100644
--- a/src/class/cdc/cdc_host.h
+++ b/src/class/cdc/cdc_host.h
@@ -71,21 +71,13 @@
 // Application API
 //--------------------------------------------------------------------+
 
-typedef struct
-{
-  uint8_t daddr;
-  uint8_t bInterfaceNumber;
-  uint8_t bInterfaceSubClass;
-  uint8_t bInterfaceProtocol;
-} tuh_cdc_itf_info_t;
-
 // Get Interface index from device address + interface number
 // return TUSB_INDEX_INVALID_8 (0xFF) if not found
 uint8_t tuh_cdc_itf_get_index(uint8_t daddr, uint8_t itf_num);
 
 // Get Interface information
 // return true if index is correct and interface is currently mounted
-bool tuh_cdc_itf_get_info(uint8_t idx, tuh_cdc_itf_info_t* info);
+bool tuh_cdc_itf_get_info(uint8_t idx, tuh_itf_info_t* info);
 
 // Check if a interface is mounted
 bool tuh_cdc_mounted(uint8_t idx);
diff --git a/src/class/hid/hid_host.c b/src/class/hid/hid_host.c
index f65b2dc20..20373f541 100644
--- a/src/class/hid/hid_host.c
+++ b/src/class/hid/hid_host.c
@@ -134,6 +134,29 @@ bool tuh_hid_mounted(uint8_t daddr, uint8_t idx)
   return p_hid != NULL;
 }
 
+bool tuh_hid_itf_get_info(uint8_t daddr, uint8_t idx, tuh_itf_info_t* info)
+{
+  hidh_interface_t* p_hid = get_hid_itf(daddr, idx);
+  TU_VERIFY(p_hid && info);
+
+  info->daddr = daddr;
+
+  // re-construct descriptor
+  tusb_desc_interface_t* desc = &info->desc;
+  desc->bLength            = sizeof(tusb_desc_interface_t);
+  desc->bDescriptorType    = TUSB_DESC_INTERFACE;
+
+  desc->bInterfaceNumber   = p_hid->itf_num;
+  desc->bAlternateSetting  = 0;
+  desc->bNumEndpoints      = (uint8_t) ((p_hid->ep_in ? 1u : 0u) + (p_hid->ep_out ? 1u : 0u));
+  desc->bInterfaceClass    = TUSB_CLASS_HID;
+  desc->bInterfaceSubClass = (p_hid->itf_protocol ? HID_SUBCLASS_BOOT : HID_SUBCLASS_NONE);
+  desc->bInterfaceProtocol = p_hid->itf_protocol;
+  desc->iInterface         = 0; // not used yet
+
+  return true;
+}
+
 uint8_t tuh_hid_itf_get_index(uint8_t daddr, uint8_t itf_num)
 {
   for ( uint8_t idx = 0; idx < CFG_TUH_HID; idx++ )
diff --git a/src/class/hid/hid_host.h b/src/class/hid/hid_host.h
index f808f36d4..c0c727e6a 100644
--- a/src/class/hid/hid_host.h
+++ b/src/class/hid/hid_host.h
@@ -71,8 +71,8 @@ uint8_t tuh_hid_itf_get_total_count(void);
 // backward compatible rename
 #define tuh_hid_instance_count    tuh_hid_itf_get_count
 
-// Check if HID interface is mounted
-bool tuh_hid_mounted(uint8_t dev_addr, uint8_t idx);
+// Get Interface information
+bool tuh_hid_itf_get_info(uint8_t daddr, uint8_t idx, tuh_itf_info_t* itf_info);
 
 // Get Interface index from device address + interface number
 // return TUSB_INDEX_INVALID_8 (0xFF) if not found
@@ -81,6 +81,9 @@ uint8_t tuh_hid_itf_get_index(uint8_t daddr, uint8_t itf_num);
 // Get interface supported protocol (bInterfaceProtocol) check out hid_interface_protocol_enum_t for possible values
 uint8_t tuh_hid_interface_protocol(uint8_t dev_addr, uint8_t idx);
 
+// Check if HID interface is mounted
+bool tuh_hid_mounted(uint8_t dev_addr, uint8_t idx);
+
 // Parse report descriptor into array of report_info struct and return number of reports.
 // For complicated report, application should write its own parser.
 uint8_t tuh_hid_parse_report_descriptor(tuh_hid_report_info_t* reports_info_arr, uint8_t arr_count, uint8_t const* desc_report, uint16_t desc_len) TU_ATTR_UNUSED;