USB device descriptor: set bInterval=1 to reduce input latency

kinx-project · May 8, 2021 · b40ae02 · b40ae02
1 parent cae21f3
commit b40ae02
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/sources/usb_device_descriptor.h b/sources/usb_device_descriptor.h
@@ -78,8 +78,8 @@
 
 #define HS_HID_MOUSE_INTERRUPT_IN_PACKET_SIZE (8U)
 #define FS_HID_MOUSE_INTERRUPT_IN_PACKET_SIZE (8U)
-#define HS_HID_MOUSE_INTERRUPT_IN_INTERVAL (0x06U) /* 2^(6-1) = 4ms */
-#define FS_HID_MOUSE_INTERRUPT_IN_INTERVAL (0x04U)
+#define HS_HID_MOUSE_INTERRUPT_IN_INTERVAL (0x01U) /* 125us */
+#define FS_HID_MOUSE_INTERRUPT_IN_INTERVAL (0x01U) /* 1ms */
 
 #define USB_HID_KEYBOARD_CLASS (0x03U)
 #define USB_HID_KEYBOARD_SUBCLASS (0x01U)
@@ -93,8 +93,8 @@
 
 #define HS_HID_KEYBOARD_INTERRUPT_IN_PACKET_SIZE (8U)
 #define FS_HID_KEYBOARD_INTERRUPT_IN_PACKET_SIZE (8U)
-#define HS_HID_KEYBOARD_INTERRUPT_IN_INTERVAL (0x06U) /* 2^(6-1) = 4ms */
-#define FS_HID_KEYBOARD_INTERRUPT_IN_INTERVAL (0x04U)
+#define HS_HID_KEYBOARD_INTERRUPT_IN_INTERVAL (0x01U) /* 125us */
+#define FS_HID_KEYBOARD_INTERRUPT_IN_INTERVAL (0x01U) /* 1ms */
 
 #define USB_HID_KEYBOARD_REPORT_LENGTH (0x08U)