diff --git a/tinyusb/class/hid_device.c b/tinyusb/class/hid_device.c
index 8ae673560..2aba541bb 100644
--- a/tinyusb/class/hid_device.c
+++ b/tinyusb/class/hid_device.c
@@ -94,7 +94,9 @@ tusb_error_t hidd_control_request(uint8_t coreid, tusb_std_request_t const * p_r
 
       case HID_REQUEST_CONTROL_SET_REPORT:
         // TODO hidd set report, has data phase
-//        dcd_pipe_control_read(coreid, .....
+// TODO verify data read from control pipe
+//        ; uint8_t hehe[10]= { 0 };
+//        dcd_pipe_control_read(coreid, hehe, p_request->wLength);
       break;
 
       case HID_REQUEST_CONTROL_GET_REPORT:
diff --git a/tinyusb/device/dcd.h b/tinyusb/device/dcd.h
index 01eae9413..0ae804d08 100644
--- a/tinyusb/device/dcd.h
+++ b/tinyusb/device/dcd.h
@@ -63,7 +63,7 @@ void dcd_controller_connect(uint8_t coreid);
 void dcd_isr(uint8_t coreid);
 
 tusb_error_t dcd_pipe_control_write(uint8_t coreid, void const * buffer, uint16_t length);
-tusb_error_t dcd_pipe_control_read(uint8_t coreid, void const * buffer, uint16_t length);
+tusb_error_t dcd_pipe_control_read(uint8_t coreid, void * buffer, uint16_t length);
 
 void dcd_pipe_control_write_zero_length(uint8_t coreid);
 tusb_error_t dcd_endpoint_configure(uint8_t coreid, tusb_descriptor_endpoint_t const * p_endpoint_desc) ATTR_WARN_UNUSED_RESULT;
diff --git a/tinyusb/device/dcd_lpc175x_6x.c b/tinyusb/device/dcd_lpc175x_6x.c
index dc19bb54e..cd5310284 100644
--- a/tinyusb/device/dcd_lpc175x_6x.c
+++ b/tinyusb/device/dcd_lpc175x_6x.c
@@ -101,7 +101,6 @@ static inline uint32_t sie_command_read (uint8_t cmd_code, uint8_t data_len)
 //--------------------------------------------------------------------+
 // IMPLEMENTATION
 //--------------------------------------------------------------------+
-
 void endpoint_control_isr(uint8_t coreid)
 {
   (void) coreid; // suppress compiler warning
@@ -248,9 +247,9 @@ tusb_error_t dcd_endpoint_configure(uint8_t coreid, tusb_descriptor_endpoint_t c
   endpoint_set_max_packet_size(phy_ep, p_endpoint_desc->wMaxPacketSize.size);
 
 #ifndef _TEST_
-	while ((LPC_USB->USBDevIntSt & DEV_INT_ENDPOINT_REALIZED_MASK) == 0) {} // TODO can be omitted
-#endif
+	while ((LPC_USB->USBDevIntSt & DEV_INT_ENDPOINT_REALIZED_MASK) == 0) {} // TODO can be omitted, or move to set max packet size
 	LPC_USB->USBDevIntClr = DEV_INT_ENDPOINT_REALIZED_MASK;
+#endif
 
 	//------------- DMA set up -------------//
 	memclr_(dcd_dd + phy_ep, sizeof(dcd_dma_descriptor_t));
@@ -281,6 +280,12 @@ void dcd_device_set_configuration(uint8_t coreid, uint8_t config_num)
   sie_command_write(SIE_CMDCODE_CONFIGURE_DEVICE, 1, 1);
 }
 
+static inline uint16_t length_unit_byte2dword(uint16_t length_in_bytes) ATTR_ALWAYS_INLINE ATTR_CONST;
+static inline uint16_t length_unit_byte2dword(uint16_t length_in_bytes)
+{
+  return (length_in_bytes + 3) / 4; // length_in_dword
+}
+
 tusb_error_t dcd_pipe_control_write(uint8_t coreid, void const * buffer, uint16_t length)
 {
   (void) coreid; // suppress compiler warning
@@ -290,7 +295,7 @@ tusb_error_t dcd_pipe_control_write(uint8_t coreid, void const * buffer, uint16_
   LPC_USB->USBCtrl   = SLAVE_CONTROL_WRITE_ENABLE_MASK; // logical endpoint = 0
 	LPC_USB->USBTxPLen = length;
 
-	for (uint16_t count = 0; count < (length + 3) / 4; count++)
+	for (uint16_t count = 0; count < length_unit_byte2dword(length); count++)
 	{
 		LPC_USB->USBTxData = *((uint32_t *)buffer); // NOTE: cortex M3 have no problem with alignment
 		buffer += 4;
@@ -304,8 +309,20 @@ tusb_error_t dcd_pipe_control_write(uint8_t coreid, void const * buffer, uint16_
   return TUSB_ERROR_NONE;
 }
 
-tusb_error_t dcd_pipe_control_read(uint8_t coreid, void const * buffer, uint16_t length)
+tusb_error_t dcd_pipe_control_read(uint8_t coreid, void * buffer, uint16_t length)
 {
+  LPC_USB->USBCtrl = SLAVE_CONTROL_READ_ENABLE_MASK; // logical endpoint = 0
+  while ((LPC_USB->USBRxPLen & SLAVE_RXPLEN_PACKET_READY_MASK) == 0) {}
+
+  uint16_t actual_length = min16_of(length, (uint16_t) (LPC_USB->USBRxPLen & SLAVE_RXPLEN_PACKET_LENGTH_MASK) );
+  uint32_t *p_read_data = (uint32_t*) buffer;
+  for( uint16_t count=0; count < length_unit_byte2dword(actual_length); count++)
+  {
+    *p_read_data = LPC_USB->USBRxData;
+    p_read_data++; // increase by 4 ( sizeof(uint32_t) )
+  }
+  LPC_USB->USBCtrl = 0;
+
   return TUSB_ERROR_NONE;
 }
 
diff --git a/tinyusb/device/usbd.c b/tinyusb/device/usbd.c
index 252363527..e827c9213 100644
--- a/tinyusb/device/usbd.c
+++ b/tinyusb/device/usbd.c
@@ -72,10 +72,10 @@ static tusb_error_t usbd_string_descriptor_init(void);
 //--------------------------------------------------------------------+
 // APPLICATION INTERFACE
 //--------------------------------------------------------------------+
-//bool tusbd_is_configured(uint8_t coreid)
-//{
-//
-//}
+bool tusbd_is_configured(uint8_t coreid)
+{
+  return usbd_devices[coreid].state == TUSB_DEVICE_STATE_CONFIGURED;
+}
 
 void usbd_bus_reset(uint32_t coreid)
 {