HID: enable descriptors bigger than 256 bytes

Author: facchinm

Diff for: hardware/arduino/avr/libraries/HID/HID.cpp

@@ -43,7 +43,7 @@ static u8 HID_INTERFACE;
 HIDDescriptor _hidInterface;
 
 static HIDDescriptorListNode* rootNode = NULL;
-static uint8_t sizeof_hidReportDescriptor = 0;
+static uint16_t sizeof_hidReportDescriptor = 0;
 static uint8_t modules_count = 0;
 //================================================================================
 //================================================================================
@@ -91,7 +91,7 @@ void HID_::AppendDescriptor(HIDDescriptorListNode *node)
 		current->next = node;
 	}
 	modules_count++;
-	sizeof_hidReportDescriptor += node->cb->length;
+	sizeof_hidReportDescriptor += (uint16_t)node->cb->length;
 }
 
 void HID_::SendReport(u8 id, const void* data, int len)

Diff for: hardware/arduino/avr/libraries/HID/HID.h

@@ -45,7 +45,7 @@
 #define HID_PHYSICAL_DESCRIPTOR_TYPE    0x23
 
 typedef struct __attribute__((packed)) {
-  u8 length;
+  uint16_t length;
   const void* descriptor;
 } HID_Descriptor;
 
@@ -88,7 +88,7 @@ typedef struct
 #define HID_TX HID_ENDPOINT_INT
 
 #define D_HIDREPORT(_descriptorLength) \
-  { 9, 0x21, 0x1, 0x1, 0, 1, 0x22, _descriptorLength, _descriptorLength >> 8 }
+  { 9, 0x21, 0x1, 0x1, 0, 1, 0x22, _descriptorLength & 0xFF, _descriptorLength >> 8 }
 
 #define WEAK __attribute__ ((weak))