diff --git a/examples/device/cdc_msc_hid/ses/lpc175x_6x/lpc175x_6x.emProject b/examples/device/cdc_msc_hid/ses/lpc175x_6x/lpc175x_6x.emProject
index e060f71ed..b9e360627 100644
--- a/examples/device/cdc_msc_hid/ses/lpc175x_6x/lpc175x_6x.emProject
+++ b/examples/device/cdc_msc_hid/ses/lpc175x_6x/lpc175x_6x.emProject
@@ -18,11 +18,12 @@
       arm_target_debug_interface_type="ADIv5"
       arm_target_device_name="LPC1769"
       arm_target_interface_type="SWD"
-      build_treat_warnings_as_errors="Yes"
+      build_treat_warnings_as_errors="No"
       c_preprocessor_definitions="LPC175x_6x;__LPC1700_FAMILY;__LPC176x_SUBFAMILY;ARM_MATH_CM3;FLASH_PLACEMENT=1;BOARD_LPCXPRESSO1769;CFG_TUSB_MCU=OPT_MCU_LPC175X_6X;CFG_TUSB_MEM_SECTION= __attribute__((section(".bss2")))"
       c_user_include_directories="../../src;$(rootDir)/hw/cmsis/Include;$(rootDir)/hw;$(rootDir)/src;$(lpcDir)/CMSIS_CORE_LPC17xx/inc;$(lpcDir)/LPC17xx_DriverLib/include"
       debug_register_definition_file="LPC176x5x_Registers.xml"
       debug_target_connection="J-Link"
+      gcc_enable_all_warnings="Yes"
       gcc_entry_point="Reset_Handler"
       link_use_linker_script_file="No"
       linker_memory_map_file="LPC1769_MemoryMap.xml"
diff --git a/hw/bsp/lpcxpresso1769/board_lpcxpresso1769.c b/hw/bsp/lpcxpresso1769/board_lpcxpresso1769.c
index dd2194894..6c29298c2 100644
--- a/hw/bsp/lpcxpresso1769/board_lpcxpresso1769.c
+++ b/hw/bsp/lpcxpresso1769/board_lpcxpresso1769.c
@@ -47,7 +47,7 @@
 #define BOARD_LED_PORT                  (0)
 #define BOARD_LED_PIN                   (22)
 
-const static struct {
+static const struct {
   uint8_t port;
   uint8_t pin;
 } buttons[] =
diff --git a/src/portable/nxp/lpc17xx/dcd_lpc175x_6x.c b/src/portable/nxp/lpc17xx/dcd_lpc175x_6x.c
index 19b2f3ea9..86a084039 100644
--- a/src/portable/nxp/lpc17xx/dcd_lpc175x_6x.c
+++ b/src/portable/nxp/lpc17xx/dcd_lpc175x_6x.c
@@ -191,12 +191,12 @@ bool dcd_init(uint8_t rhport)
   bus_reset();
 
   LPC_USB->USBDevIntEn = (DEV_INT_DEVICE_STATUS_MASK | DEV_INT_ENDPOINT_SLOW_MASK | DEV_INT_ERROR_MASK);
-	LPC_USB->USBUDCAH    = (uint32_t) _dcd.udca;
-	LPC_USB->USBDMAIntEn = (DMA_INT_END_OF_XFER_MASK | DMA_INT_ERROR_MASK );
+  LPC_USB->USBUDCAH = (uint32_t) _dcd.udca;
+  LPC_USB->USBDMAIntEn = (DMA_INT_END_OF_XFER_MASK | DMA_INT_ERROR_MASK);
 
-	sie_write(SIE_CMDCODE_DEVICE_STATUS, 1, 1); // connect
+  sie_write(SIE_CMDCODE_DEVICE_STATUS, 1, 1);    // connect
 
-	NVIC_EnableIRQ(USB_IRQn);
+  NVIC_EnableIRQ(USB_IRQn);
 
   return TUSB_ERROR_NONE;
 }
@@ -327,6 +327,7 @@ void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr)
 
 void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr)
 {
+  (void) rhport;
   uint8_t ep_id = edpt_addr2phy(ep_addr);
 
   sie_write(SIE_CMDCODE_ENDPOINT_SET_STATUS+ep_id, 1, 0);
@@ -334,6 +335,7 @@ void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr)
 
 bool dcd_edpt_stalled (uint8_t rhport, uint8_t ep_addr)
 {
+  (void) rhport;
   // TODO implement later
   return false;
 }
@@ -471,16 +473,13 @@ static void endpoint_non_control_isr(uint32_t eot_int)
   }
 }
 
-static void endpoint_control_isr(void)
+static void control_xfer_isr(uint8_t rhport)
 {
-  uint32_t const interrupt_enable = LPC_USB->USBEpIntEn;
-  uint32_t const endpoint_int_status = LPC_USB->USBEpIntSt & interrupt_enable;
-//  LPC_USB->USBEpIntClr = endpoint_int_status; // acknowledge interrupt TODO cannot immediately acknowledge setup packet
-
-  dcd_event_t event = { .rhport = 0 };
+  uint32_t const ep_int_status = LPC_USB->USBEpIntSt & LPC_USB->USBEpIntEn;
+//  LPC_USB->USBEpIntClr = ep_int_status; // acknowledge interrupt TODO cannot immediately acknowledge setup packet
 
   //------------- Setup Received-------------//
-  if ( (endpoint_int_status & BIT_(0)) &&
+  if ( (ep_int_status & BIT_(0)) &&
        (sie_read(SIE_CMDCODE_ENDPOINT_SELECT+0, 1) & SIE_SELECT_ENDPOINT_SETUP_RECEIVED_MASK) )
   {
     (void) sie_read(SIE_CMDCODE_ENDPOINT_SELECT_CLEAR_INTERRUPT+0, 1); // clear setup bit
@@ -488,12 +487,12 @@ static void endpoint_control_isr(void)
     uint8_t setup_packet[8];
     control_ep_read(setup_packet, 8); // TODO read before clear setup above
 
-    dcd_event_setup_received(0, setup_packet, true);
+    dcd_event_setup_received(rhport, setup_packet, true);
   }
-  else if (endpoint_int_status & 0x03)
+  else if (ep_int_status & 0x03)
   {
     // Control out complete
-    if ( endpoint_int_status & BIT_(0) )
+    if ( ep_int_status & BIT_(0) )
     {
       if ( _dcd.control.out_buffer )
       {
@@ -503,7 +502,7 @@ static void endpoint_control_isr(void)
         _dcd.control.out_buffer = NULL;
         _dcd.control.out_bytes = 0;
 
-        dcd_event_xfer_complete(0, 0, received, XFER_RESULT_SUCCESS, true);
+        dcd_event_xfer_complete(rhport, 0, received, XFER_RESULT_SUCCESS, true);
       }else
       {
         // mark as received
@@ -512,13 +511,13 @@ static void endpoint_control_isr(void)
     }
 
     // Control In complete
-    if ( endpoint_int_status & BIT_(1) )
+    if ( ep_int_status & BIT_(1) )
     {
-      dcd_event_xfer_complete(0, TUSB_DIR_IN_MASK, _dcd.control.in_bytes, XFER_RESULT_SUCCESS, true);
+      dcd_event_xfer_complete(rhport, TUSB_DIR_IN_MASK, _dcd.control.in_bytes, XFER_RESULT_SUCCESS, true);
     }
   }
 
-  LPC_USB->USBEpIntClr = endpoint_int_status; // acknowledge interrupt TODO cannot immediately acknowledge setup packet
+  LPC_USB->USBEpIntClr = ep_int_status; // acknowledge interrupt TODO cannot immediately acknowledge setup packet
 }
 
 void hal_dcd_isr(uint8_t rhport)
@@ -561,7 +560,7 @@ void hal_dcd_isr(uint8_t rhport)
   //------------- Control Endpoint (Slave Mode) -------------//
   if (device_int_status & DEV_INT_ENDPOINT_SLOW_MASK)
   {
-    endpoint_control_isr();
+    control_xfer_isr(rhport);
   }
 
   //------------- Non-Control Endpoint (DMA Mode) -------------//