USBDevice - USBDevice with Nucleo 32L476RG support

ENSMM » Code » USBDevice

USBDevice with Nucleo 32L476RG support

Dependents: ObCP_ENSMM_V2020_Test_Accelero

targets/TARGET_Silicon_Labs/src/em_usbd.c@72:14a22343c610, 2020-09-30 (annotated)

Committer:: jimbaud
Date:: Wed Sep 30 11:26:16 2020 +0000
Revision:: 72:14a22343c610
Parent:: 71:53949e6131f6

USBDevice with Nucleo 32L476RG support

Who changed what in which revision?

User	Revision	Line number	New contents of line
Kojto	71:53949e6131f6	1	/************************************************************************//
Kojto	71:53949e6131f6	2	* @file em_usbd.c
Kojto	71:53949e6131f6	3	* @brief USB protocol stack library, device API.
Kojto	71:53949e6131f6	4	* @version 3.20.14
Kojto	71:53949e6131f6	5	******************************************************************************
Kojto	71:53949e6131f6	6	* @section License
Kojto	71:53949e6131f6	7	* <b>(C) Copyright 2014 Silicon Labs, http://www.silabs.com</b>
Kojto	71:53949e6131f6	8	*******************************************************************************
Kojto	71:53949e6131f6	9	*
Kojto	71:53949e6131f6	10	* Licensed under the Apache License, Version 2.0 (the "License");
Kojto	71:53949e6131f6	11	* you may not use this file except in compliance with the License.
Kojto	71:53949e6131f6	12	* You may obtain a copy of the License at
Kojto	71:53949e6131f6	13	*
Kojto	71:53949e6131f6	14	* http://www.apache.org/licenses/LICENSE-2.0
Kojto	71:53949e6131f6	15	*
Kojto	71:53949e6131f6	16	* Unless required by applicable law or agreed to in writing, software
Kojto	71:53949e6131f6	17	* distributed under the License is distributed on an "AS IS" BASIS,
Kojto	71:53949e6131f6	18	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Kojto	71:53949e6131f6	19	* See the License for the specific language governing permissions and
Kojto	71:53949e6131f6	20	* limitations under the License.
Kojto	71:53949e6131f6	21	*
Kojto	71:53949e6131f6	22	******************************************************************************/
Kojto	71:53949e6131f6	23
Kojto	71:53949e6131f6	24	#include "em_device.h"
Kojto	71:53949e6131f6	25	#if defined( USB_PRESENT ) && ( USB_COUNT == 1 )
Kojto	71:53949e6131f6	26	#include "em_usb.h"
Kojto	71:53949e6131f6	27	#if defined( USB_DEVICE )
Kojto	71:53949e6131f6	28
Kojto	71:53949e6131f6	29	#include "em_cmu.h"
Kojto	71:53949e6131f6	30	#include "em_usbtypes.h"
Kojto	71:53949e6131f6	31	#include "em_usbhal.h"
Kojto	71:53949e6131f6	32	#include "em_usbd.h"
Kojto	71:53949e6131f6	33
Kojto	71:53949e6131f6	34	/** @cond DO_NOT_INCLUDE_WITH_DOXYGEN */
Kojto	71:53949e6131f6	35
Kojto	71:53949e6131f6	36	static USBD_Device_TypeDef device;
Kojto	71:53949e6131f6	37	USBD_Device_TypeDef *dev = &device;
Kojto	71:53949e6131f6	38
Kojto	71:53949e6131f6	39	static uint32_t totalRxFifoSize = 0, totalTxFifoSize = 0;
Kojto	71:53949e6131f6	40	static int numEps = 0;
Kojto	71:53949e6131f6	41	static int txFifoNum = 1;
Kojto	71:53949e6131f6	42
Kojto	71:53949e6131f6	43	static void USBD_ResetEndpoints(void);
Kojto	71:53949e6131f6	44	extern USB_Status_TypeDef USBDHAL_ReconfigureFifos( uint32_t totalRxFifoSize,
Kojto	71:53949e6131f6	45	uint32_t totalTxFifoSize );
Kojto	71:53949e6131f6	46	#ifndef __MBED__
Kojto	71:53949e6131f6	47	static const char *stateNames[] =
Kojto	71:53949e6131f6	48	{
Kojto	71:53949e6131f6	49	[ USBD_STATE_NONE ] = "NONE ",
Kojto	71:53949e6131f6	50	[ USBD_STATE_ATTACHED ] = "ATTACHED ",
Kojto	71:53949e6131f6	51	[ USBD_STATE_POWERED ] = "POWERED ",
Kojto	71:53949e6131f6	52	[ USBD_STATE_DEFAULT ] = "DEFAULT ",
Kojto	71:53949e6131f6	53	[ USBD_STATE_ADDRESSED ] = "ADDRESSED ",
Kojto	71:53949e6131f6	54	[ USBD_STATE_CONFIGURED ] = "CONFIGURED",
Kojto	71:53949e6131f6	55	[ USBD_STATE_SUSPENDED ] = "SUSPENDED ",
Kojto	71:53949e6131f6	56	[ USBD_STATE_LASTMARKER ] = "UNDEFINED "
Kojto	71:53949e6131f6	57	};
Kojto	71:53949e6131f6	58	#endif
Kojto	71:53949e6131f6	59
Kojto	71:53949e6131f6	60	/** @endcond */
Kojto	71:53949e6131f6	61
Kojto	71:53949e6131f6	62	/*************************************************************************//
Kojto	71:53949e6131f6	63	* @brief
Kojto	71:53949e6131f6	64	* Abort all pending transfers.
Kojto	71:53949e6131f6	65	*
Kojto	71:53949e6131f6	66	* @details
Kojto	71:53949e6131f6	67	* Aborts transfers for all endpoints currently in use. Pending
Kojto	71:53949e6131f6	68	* transfers on the default endpoint (EP0) are not aborted.
Kojto	71:53949e6131f6	69	******************************************************************************/
Kojto	71:53949e6131f6	70	void USBD_AbortAllTransfers( void )
Kojto	71:53949e6131f6	71	{
Kojto	71:53949e6131f6	72	INT_Disable();
Kojto	71:53949e6131f6	73	USBDHAL_AbortAllTransfers( USB_STATUS_EP_ABORTED );
Kojto	71:53949e6131f6	74	INT_Enable();
Kojto	71:53949e6131f6	75	}
Kojto	71:53949e6131f6	76
Kojto	71:53949e6131f6	77	/*************************************************************************//
Kojto	71:53949e6131f6	78	* @brief
Kojto	71:53949e6131f6	79	* Abort a pending transfer on a specific endpoint.
Kojto	71:53949e6131f6	80	*
Kojto	71:53949e6131f6	81	* @param[in] epAddr
Kojto	71:53949e6131f6	82	* The address of the endpoint to abort.
Kojto	71:53949e6131f6	83	******************************************************************************/
Kojto	71:53949e6131f6	84	int USBD_AbortTransfer( int epAddr )
Kojto	71:53949e6131f6	85	{
Kojto	71:53949e6131f6	86	USB_XferCompleteCb_TypeDef callback;
Kojto	71:53949e6131f6	87	USBD_Ep_TypeDef *ep = USBD_GetEpFromAddr( epAddr );
Kojto	71:53949e6131f6	88
Kojto	71:53949e6131f6	89	if ( ep == NULL )
Kojto	71:53949e6131f6	90	{
Kojto	71:53949e6131f6	91	DEBUG_USB_API_PUTS( "\nUSBD_AbortTransfer(), Illegal endpoint" );
Kojto	71:53949e6131f6	92	EFM_ASSERT( false );
Kojto	71:53949e6131f6	93	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	94	}
Kojto	71:53949e6131f6	95
Kojto	71:53949e6131f6	96	if ( ep->num == 0 )
Kojto	71:53949e6131f6	97	{
Kojto	71:53949e6131f6	98	DEBUG_USB_API_PUTS( "\nUSBD_AbortTransfer(), Illegal endpoint" );
Kojto	71:53949e6131f6	99	EFM_ASSERT( false );
Kojto	71:53949e6131f6	100	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	101	}
Kojto	71:53949e6131f6	102
Kojto	71:53949e6131f6	103	INT_Disable();
Kojto	71:53949e6131f6	104	if ( ep->state == D_EP_IDLE )
Kojto	71:53949e6131f6	105	{
Kojto	71:53949e6131f6	106	INT_Enable();
Kojto	71:53949e6131f6	107	return USB_STATUS_OK;
Kojto	71:53949e6131f6	108	}
Kojto	71:53949e6131f6	109
Kojto	71:53949e6131f6	110	USBD_AbortEp( ep );
Kojto	71:53949e6131f6	111
Kojto	71:53949e6131f6	112	ep->state = D_EP_IDLE;
Kojto	71:53949e6131f6	113	if ( ep->xferCompleteCb )
Kojto	71:53949e6131f6	114	{
Kojto	71:53949e6131f6	115	callback = ep->xferCompleteCb;
Kojto	71:53949e6131f6	116	ep->xferCompleteCb = NULL;
Kojto	71:53949e6131f6	117
Kojto	71:53949e6131f6	118	if ( ( dev->lastState == USBD_STATE_CONFIGURED ) &&
Kojto	71:53949e6131f6	119	( dev->state == USBD_STATE_ADDRESSED ) )
Kojto	71:53949e6131f6	120	{
Kojto	71:53949e6131f6	121	USBDHAL_DeactivateEp( ep );
Kojto	71:53949e6131f6	122	}
Kojto	71:53949e6131f6	123
Kojto	71:53949e6131f6	124	DEBUG_TRACE_ABORT( USB_STATUS_EP_ABORTED );
Kojto	71:53949e6131f6	125	callback( USB_STATUS_EP_ABORTED, ep->xferred, ep->remaining );
Kojto	71:53949e6131f6	126	}
Kojto	71:53949e6131f6	127
Kojto	71:53949e6131f6	128	INT_Enable();
Kojto	71:53949e6131f6	129	return USB_STATUS_OK;
Kojto	71:53949e6131f6	130	}
Kojto	71:53949e6131f6	131
Kojto	71:53949e6131f6	132	/*************************************************************************//
Kojto	71:53949e6131f6	133	* @brief
Kojto	71:53949e6131f6	134	* Start USB device operation.
Kojto	71:53949e6131f6	135	*
Kojto	71:53949e6131f6	136	* @details
Kojto	71:53949e6131f6	137	* Device operation is started by connecting a pullup resistor on the
Kojto	71:53949e6131f6	138	* appropriate USB data line.
Kojto	71:53949e6131f6	139	******************************************************************************/
Kojto	71:53949e6131f6	140	void USBD_Connect( void )
Kojto	71:53949e6131f6	141	{
Kojto	71:53949e6131f6	142	INT_Disable();
Kojto	71:53949e6131f6	143	USBDHAL_Connect();
Kojto	71:53949e6131f6	144	INT_Enable();
Kojto	71:53949e6131f6	145	}
Kojto	71:53949e6131f6	146
Kojto	71:53949e6131f6	147	/*************************************************************************//
Kojto	71:53949e6131f6	148	* @brief
Kojto	71:53949e6131f6	149	* Stop USB device operation.
Kojto	71:53949e6131f6	150	*
Kojto	71:53949e6131f6	151	* @details
Kojto	71:53949e6131f6	152	* Device operation is stopped by disconnecting the pullup resistor from the
Kojto	71:53949e6131f6	153	* appropriate USB data line. Often referred to as a "soft" disconnect.
Kojto	71:53949e6131f6	154	******************************************************************************/
Kojto	71:53949e6131f6	155	void USBD_Disconnect( void )
Kojto	71:53949e6131f6	156	{
Kojto	71:53949e6131f6	157	INT_Disable();
Kojto	71:53949e6131f6	158	USBDHAL_Disconnect();
Kojto	71:53949e6131f6	159	INT_Enable();
Kojto	71:53949e6131f6	160	}
Kojto	71:53949e6131f6	161
Kojto	71:53949e6131f6	162	/*************************************************************************//
Kojto	71:53949e6131f6	163	* @brief
Kojto	71:53949e6131f6	164	* Check if an endpoint is busy doing a transfer.
Kojto	71:53949e6131f6	165	*
Kojto	71:53949e6131f6	166	* @param[in] epAddr
Kojto	71:53949e6131f6	167	* The address of the endpoint to check.
Kojto	71:53949e6131f6	168	*
Kojto	71:53949e6131f6	169	* @return
Kojto	71:53949e6131f6	170	* True if endpoint is busy, false otherwise.
Kojto	71:53949e6131f6	171	******************************************************************************/
Kojto	71:53949e6131f6	172	bool USBD_EpIsBusy( int epAddr )
Kojto	71:53949e6131f6	173	{
Kojto	71:53949e6131f6	174	USBD_Ep_TypeDef *ep = USBD_GetEpFromAddr( epAddr );
Kojto	71:53949e6131f6	175
Kojto	71:53949e6131f6	176	if ( ep == NULL )
Kojto	71:53949e6131f6	177	{
Kojto	71:53949e6131f6	178	DEBUG_USB_API_PUTS( "\nUSBD_EpIsBusy(), Illegal endpoint" );
Kojto	71:53949e6131f6	179	EFM_ASSERT( false );
Kojto	71:53949e6131f6	180	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	181	}
Kojto	71:53949e6131f6	182
Kojto	71:53949e6131f6	183	if ( ep->state == D_EP_IDLE )
Kojto	71:53949e6131f6	184	return false;
Kojto	71:53949e6131f6	185
Kojto	71:53949e6131f6	186	return true;
Kojto	71:53949e6131f6	187	}
Kojto	71:53949e6131f6	188
Kojto	71:53949e6131f6	189	/*************************************************************************//
Kojto	71:53949e6131f6	190	* @brief
Kojto	71:53949e6131f6	191	* Get current USB device state.
Kojto	71:53949e6131f6	192	*
Kojto	71:53949e6131f6	193	* @return
Kojto	71:53949e6131f6	194	* Device USB state. See @ref USBD_State_TypeDef.
Kojto	71:53949e6131f6	195	******************************************************************************/
Kojto	71:53949e6131f6	196	USBD_State_TypeDef USBD_GetUsbState( void )
Kojto	71:53949e6131f6	197	{
Kojto	71:53949e6131f6	198	return dev->state;
Kojto	71:53949e6131f6	199	}
Kojto	71:53949e6131f6	200
Kojto	71:53949e6131f6	201	/*************************************************************************//
Kojto	71:53949e6131f6	202	* @brief
Kojto	71:53949e6131f6	203	* Get a string naming a device USB state.
Kojto	71:53949e6131f6	204	*
Kojto	71:53949e6131f6	205	* @param[in] state
Kojto	71:53949e6131f6	206	* Device USB state. See @ref USBD_State_TypeDef.
Kojto	71:53949e6131f6	207	*
Kojto	71:53949e6131f6	208	* @return
Kojto	71:53949e6131f6	209	* State name string pointer.
Kojto	71:53949e6131f6	210	******************************************************************************/
Kojto	71:53949e6131f6	211	const char *USBD_GetUsbStateName( USBD_State_TypeDef state )
Kojto	71:53949e6131f6	212	{
Kojto	71:53949e6131f6	213	if ( state > USBD_STATE_LASTMARKER )
Kojto	71:53949e6131f6	214	state = USBD_STATE_LASTMARKER;
Kojto	71:53949e6131f6	215
Kojto	71:53949e6131f6	216	#ifndef __MBED__
Kojto	71:53949e6131f6	217	return stateNames[ state ];
Kojto	71:53949e6131f6	218	#else
Kojto	71:53949e6131f6	219	return NULL;
Kojto	71:53949e6131f6	220	#endif
Kojto	71:53949e6131f6	221	}
Kojto	71:53949e6131f6	222
Kojto	71:53949e6131f6	223	/*************************************************************************//
Kojto	71:53949e6131f6	224	* @brief
Kojto	71:53949e6131f6	225	* Initializes USB device hardware and internal protocol stack data structures,
Kojto	71:53949e6131f6	226	* then connects the data-line (D+ or D-) pullup resistor to signal host that
Kojto	71:53949e6131f6	227	* enumeration can begin.
Kojto	71:53949e6131f6	228	*
Kojto	71:53949e6131f6	229	* @note
Kojto	71:53949e6131f6	230	* You may later use @ref USBD_Disconnect() and @ref USBD_Connect() to force
Kojto	71:53949e6131f6	231	* reenumeration.
Kojto	71:53949e6131f6	232	*
Kojto	71:53949e6131f6	233	* @param[in] p
Kojto	71:53949e6131f6	234	* Pointer to device initialization struct. See @ref USBD_Init_TypeDef.
Kojto	71:53949e6131f6	235	*
Kojto	71:53949e6131f6	236	* @return
Kojto	71:53949e6131f6	237	* @ref USB_STATUS_OK on success, else an appropriate error code.
Kojto	71:53949e6131f6	238	******************************************************************************/
Kojto	71:53949e6131f6	239	int USBD_Init( const USBD_Init_TypeDef *p )
Kojto	71:53949e6131f6	240	{
Kojto	71:53949e6131f6	241	USBD_Ep_TypeDef *ep;
Kojto	71:53949e6131f6	242
Kojto	71:53949e6131f6	243	#if !defined( USB_CORECLK_HFRCO ) \|\| !defined( CMU_OSCENCMD_USHFRCOEN )
Kojto	71:53949e6131f6	244	/* Devices supporting crystal-less USB can use HFRCO or HFXO as core clock. */
Kojto	71:53949e6131f6	245	/* All other devices must use HFXO as core clock. */
Kojto	71:53949e6131f6	246	if ( CMU_ClockSelectGet( cmuClock_HF ) != cmuSelect_HFXO )
Kojto	71:53949e6131f6	247	{
Kojto	71:53949e6131f6	248	CMU_ClockSelectSet( cmuClock_HF, cmuSelect_HFXO );
Kojto	71:53949e6131f6	249	}
Kojto	71:53949e6131f6	250	#endif
Kojto	71:53949e6131f6	251
Kojto	71:53949e6131f6	252	#if !defined( CMU_OSCENCMD_USHFRCOEN )
Kojto	71:53949e6131f6	253	#if ( USB_USBC_32kHz_CLK == USB_USBC_32kHz_CLK_LFXO )
Kojto	71:53949e6131f6	254	CMU_OscillatorEnable(cmuOsc_LFXO, true, false);
Kojto	71:53949e6131f6	255	#else
Kojto	71:53949e6131f6	256	CMU_OscillatorEnable(cmuOsc_LFRCO, true, false);
Kojto	71:53949e6131f6	257	#endif
Kojto	71:53949e6131f6	258
Kojto	71:53949e6131f6	259	#else
Kojto	71:53949e6131f6	260	CMU_ClockEnable(cmuClock_CORELE, true);
Kojto	71:53949e6131f6	261	/* LFC clock is needed to detect USB suspend when LEMIDLE is activated. */
Kojto	71:53949e6131f6	262	#if ( USB_USBC_32kHz_CLK == USB_USBC_32kHz_CLK_LFXO )
Kojto	71:53949e6131f6	263	CMU_ClockSelectSet(cmuClock_LFC, cmuSelect_LFXO);
Kojto	71:53949e6131f6	264	#else
Kojto	71:53949e6131f6	265	CMU_ClockSelectSet(cmuClock_LFC, cmuSelect_LFRCO);
Kojto	71:53949e6131f6	266	#endif
Kojto	71:53949e6131f6	267	CMU_ClockEnable(cmuClock_USBLE, true);
Kojto	71:53949e6131f6	268	#endif
Kojto	71:53949e6131f6	269
Kojto	71:53949e6131f6	270	USBTIMER_Init();
Kojto	71:53949e6131f6	271
Kojto	71:53949e6131f6	272	memset( dev, 0, sizeof( USBD_Device_TypeDef ) );
Kojto	71:53949e6131f6	273
Kojto	71:53949e6131f6	274	dev->setup = dev->setupPkt;
Kojto	71:53949e6131f6	275	dev->state = USBD_STATE_LASTMARKER;
Kojto	71:53949e6131f6	276	dev->savedState = USBD_STATE_NONE;
Kojto	71:53949e6131f6	277	dev->lastState = USBD_STATE_NONE;
Kojto	71:53949e6131f6	278	dev->callbacks = p->callbacks;
Kojto	71:53949e6131f6	279	dev->remoteWakeupEnabled = false;
Kojto	71:53949e6131f6	280
Kojto	71:53949e6131f6	281	/* Initialize EP0 */
Kojto	71:53949e6131f6	282
Kojto	71:53949e6131f6	283	ep = &dev->ep[ 0 ];
Kojto	71:53949e6131f6	284	ep->in = false;
Kojto	71:53949e6131f6	285	ep->buf = NULL;
Kojto	71:53949e6131f6	286	ep->num = 0;
Kojto	71:53949e6131f6	287	ep->mask = 1;
Kojto	71:53949e6131f6	288	ep->addr = 0;
Kojto	71:53949e6131f6	289	ep->type = USB_EPTYPE_CTRL;
Kojto	71:53949e6131f6	290	ep->txFifoNum = 0;
Kojto	71:53949e6131f6	291
Kojto	71:53949e6131f6	292	/* FIXME! */
Kojto	71:53949e6131f6	293	ep->packetSize = 64;
Kojto	71:53949e6131f6	294	dev->ep0MpsCode = _USB_DOEP0CTL_MPS_64B;
Kojto	71:53949e6131f6	295
Kojto	71:53949e6131f6	296	ep->remaining = 0;
Kojto	71:53949e6131f6	297	ep->xferred = 0;
Kojto	71:53949e6131f6	298	ep->state = D_EP_IDLE;
Kojto	71:53949e6131f6	299	ep->xferCompleteCb = NULL;
Kojto	71:53949e6131f6	300	ep->fifoSize = ep->packetSize / 4;
Kojto	71:53949e6131f6	301
Kojto	71:53949e6131f6	302	totalTxFifoSize = ep->fifoSize * p->bufferingMultiplier[ 0 ];
Kojto	71:53949e6131f6	303	totalRxFifoSize = (ep->fifoSize + 1) * p->bufferingMultiplier[ 0 ];
Kojto	71:53949e6131f6	304
Kojto	71:53949e6131f6	305	/* Rx-FIFO size: SETUP packets : 4*n + 6 n=#CTRL EP's
Kojto	71:53949e6131f6	306	* GOTNAK : 1
Kojto	71:53949e6131f6	307	* Status info : 2*n n=#OUT EP's (EP0 included) in HW
Kojto	71:53949e6131f6	308	*/
Kojto	71:53949e6131f6	309	totalRxFifoSize += 10 + 1 + ( 2 * (MAX_NUM_OUT_EPS + 1) );
Kojto	71:53949e6131f6	310
Kojto	71:53949e6131f6	311	INT_Disable();
Kojto	71:53949e6131f6	312
Kojto	71:53949e6131f6	313	/* Enable USB clock */
Kojto	71:53949e6131f6	314	CMU->HFCORECLKEN0 \|= CMU_HFCORECLKEN0_USB \| CMU_HFCORECLKEN0_USBC;
Kojto	71:53949e6131f6	315
Kojto	71:53949e6131f6	316	#if defined( CMU_OSCENCMD_USHFRCOEN )
Kojto	71:53949e6131f6	317	CMU->USHFRCOCONF = CMU_USHFRCOCONF_BAND_48MHZ;
Kojto	71:53949e6131f6	318	CMU_ClockSelectSet( cmuClock_USBC, cmuSelect_USHFRCO );
Kojto	71:53949e6131f6	319
Kojto	71:53949e6131f6	320	/* Enable USHFRCO Clock Recovery mode. */
Kojto	71:53949e6131f6	321	CMU->USBCRCTRL \|= CMU_USBCRCTRL_EN;
Kojto	71:53949e6131f6	322
Kojto	71:53949e6131f6	323	/* Turn on Low Energy Mode (LEM) features. */
Kojto	71:53949e6131f6	324	USB->CTRL = USB_CTRL_LEMOSCCTRL_GATE
Kojto	71:53949e6131f6	325	\| USB_CTRL_LEMIDLEEN
Kojto	71:53949e6131f6	326	\| USB_CTRL_LEMPHYCTRL;
Kojto	71:53949e6131f6	327	#else
Kojto	71:53949e6131f6	328	CMU_ClockSelectSet( cmuClock_USBC, cmuSelect_HFCLK );
Kojto	71:53949e6131f6	329	#endif
Kojto	71:53949e6131f6	330
Kojto	71:53949e6131f6	331	USBHAL_DisableGlobalInt();
Kojto	71:53949e6131f6	332
Kojto	71:53949e6131f6	333	if ( USBDHAL_CoreInit( totalRxFifoSize, totalTxFifoSize ) == USB_STATUS_OK )
Kojto	71:53949e6131f6	334	{
Kojto	71:53949e6131f6	335	USBDHAL_EnableUsbResetAndSuspendInt();
Kojto	71:53949e6131f6	336	USBHAL_EnableGlobalInt();
Kojto	71:53949e6131f6	337	NVIC_ClearPendingIRQ( USB_IRQn );
Kojto	71:53949e6131f6	338	NVIC_EnableIRQ( USB_IRQn );
Kojto	71:53949e6131f6	339	}
Kojto	71:53949e6131f6	340	else
Kojto	71:53949e6131f6	341	{
Kojto	71:53949e6131f6	342	INT_Enable();
Kojto	71:53949e6131f6	343	DEBUG_USB_API_PUTS( "\nUSBD_Init(), FIFO setup error" );
Kojto	71:53949e6131f6	344	EFM_ASSERT( false );
Kojto	71:53949e6131f6	345	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	346	}
Kojto	71:53949e6131f6	347
Kojto	71:53949e6131f6	348	#if ( USB_PWRSAVE_MODE & USB_PWRSAVE_MODE_ONVBUSOFF )
Kojto	71:53949e6131f6	349	if ( USBHAL_VbusIsOn() )
Kojto	71:53949e6131f6	350	{
Kojto	71:53949e6131f6	351	USBD_SetUsbState( USBD_STATE_POWERED );
Kojto	71:53949e6131f6	352	}
Kojto	71:53949e6131f6	353	else
Kojto	71:53949e6131f6	354	#endif
Kojto	71:53949e6131f6	355	{
Kojto	71:53949e6131f6	356	USBD_SetUsbState( USBD_STATE_NONE );
Kojto	71:53949e6131f6	357	}
Kojto	71:53949e6131f6	358
Kojto	71:53949e6131f6	359	INT_Enable();
Kojto	71:53949e6131f6	360	return USB_STATUS_OK;
Kojto	71:53949e6131f6	361	}
Kojto	71:53949e6131f6	362
Kojto	71:53949e6131f6	363	/*************************************************************************//
Kojto	71:53949e6131f6	364	* @brief
Kojto	71:53949e6131f6	365	* Start a read (OUT) transfer on an endpoint.
Kojto	71:53949e6131f6	366	*
Kojto	71:53949e6131f6	367	* @note
Kojto	71:53949e6131f6	368	* The transfer buffer length must be a multiple of 4 bytes in length and
Kojto	71:53949e6131f6	369	* WORD (4 byte) aligned. When allocating the buffer, round buffer length up.
Kojto	71:53949e6131f6	370	* If it is possible that the host will send more data than your device
Kojto	71:53949e6131f6	371	* expects, round buffer size up to the next multiple of maxpacket size.
Kojto	71:53949e6131f6	372	*
Kojto	71:53949e6131f6	373	* @param[in] epAddr
Kojto	71:53949e6131f6	374	* Endpoint address.
Kojto	71:53949e6131f6	375	*
Kojto	71:53949e6131f6	376	* @param[in] data
Kojto	71:53949e6131f6	377	* Pointer to transfer data buffer.
Kojto	71:53949e6131f6	378	*
Kojto	71:53949e6131f6	379	* @param[in] byteCount
Kojto	71:53949e6131f6	380	* Transfer length.
Kojto	71:53949e6131f6	381	*
Kojto	71:53949e6131f6	382	* @param[in] callback
Kojto	71:53949e6131f6	383	* Function to be called on transfer completion. Supply NULL if no callback
Kojto	71:53949e6131f6	384	* is needed. See @ref USB_XferCompleteCb_TypeDef.
Kojto	71:53949e6131f6	385	*
Kojto	71:53949e6131f6	386	* @return
Kojto	71:53949e6131f6	387	* @ref USB_STATUS_OK on success, else an appropriate error code.
Kojto	71:53949e6131f6	388	******************************************************************************/
Kojto	71:53949e6131f6	389	int USBD_Read( int epAddr, void *data, int byteCount,
Kojto	71:53949e6131f6	390	USB_XferCompleteCb_TypeDef callback )
Kojto	71:53949e6131f6	391	{
Kojto	71:53949e6131f6	392	USBD_Ep_TypeDef *ep = USBD_GetEpFromAddr( epAddr );
Kojto	71:53949e6131f6	393
Kojto	71:53949e6131f6	394	USB_PRINTF("USBD: Read addr %x, data %p, size %d, cb 0x%lx\n",
Kojto	71:53949e6131f6	395	epAddr, data, byteCount, (uint32_t)callback);
Kojto	71:53949e6131f6	396
Kojto	71:53949e6131f6	397	if ( ep == NULL )
Kojto	71:53949e6131f6	398	{
Kojto	71:53949e6131f6	399	DEBUG_USB_API_PUTS( "\nUSBD_Read(), Illegal endpoint" );
Kojto	71:53949e6131f6	400	EFM_ASSERT( false );
Kojto	71:53949e6131f6	401	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	402	}
Kojto	71:53949e6131f6	403
Kojto	71:53949e6131f6	404	if ( ( byteCount > MAX_XFER_LEN ) \|\|
Kojto	71:53949e6131f6	405	( ( byteCount / ep->packetSize ) > MAX_PACKETS_PR_XFER ) )
Kojto	71:53949e6131f6	406	{
Kojto	71:53949e6131f6	407	DEBUG_USB_API_PUTS( "\nUSBD_Read(), Illegal transfer size" );
Kojto	71:53949e6131f6	408	EFM_ASSERT( false );
Kojto	71:53949e6131f6	409	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	410	}
Kojto	71:53949e6131f6	411
Kojto	71:53949e6131f6	412	if ( (uint32_t)data & 3 )
Kojto	71:53949e6131f6	413	{
Kojto	71:53949e6131f6	414	DEBUG_USB_API_PUTS( "\nUSBD_Read(), Misaligned data buffer" );
Kojto	71:53949e6131f6	415	EFM_ASSERT( false );
Kojto	71:53949e6131f6	416	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	417	}
Kojto	71:53949e6131f6	418
Kojto	71:53949e6131f6	419	INT_Disable();
Kojto	71:53949e6131f6	420	if ( USBDHAL_EpIsStalled( ep ) )
Kojto	71:53949e6131f6	421	{
Kojto	71:53949e6131f6	422	INT_Enable();
Kojto	71:53949e6131f6	423	DEBUG_USB_API_PUTS( "\nUSBD_Read(), Endpoint is halted" );
Kojto	71:53949e6131f6	424	return USB_STATUS_EP_STALLED;
Kojto	71:53949e6131f6	425	}
Kojto	71:53949e6131f6	426
Kojto	71:53949e6131f6	427	if ( ep->state != D_EP_IDLE )
Kojto	71:53949e6131f6	428	{
Kojto	71:53949e6131f6	429	INT_Enable();
Kojto	71:53949e6131f6	430	DEBUG_USB_API_PUTS( "\nUSBD_Read(), Endpoint is busy" );
Kojto	71:53949e6131f6	431	return USB_STATUS_EP_BUSY;
Kojto	71:53949e6131f6	432	}
Kojto	71:53949e6131f6	433
Kojto	71:53949e6131f6	434	if ( ( ep->num > 0 ) && ( USBD_GetUsbState() != USBD_STATE_CONFIGURED ) )
Kojto	71:53949e6131f6	435	{
Kojto	71:53949e6131f6	436	INT_Enable();
Kojto	71:53949e6131f6	437	DEBUG_USB_API_PUTS( "\nUSBD_Read(), Device not configured" );
Kojto	71:53949e6131f6	438	return USB_STATUS_DEVICE_UNCONFIGURED;
Kojto	71:53949e6131f6	439	}
Kojto	71:53949e6131f6	440
Kojto	71:53949e6131f6	441	ep->buf = (uint8_t*)data;
Kojto	71:53949e6131f6	442	ep->remaining = byteCount;
Kojto	71:53949e6131f6	443	ep->xferred = 0;
Kojto	71:53949e6131f6	444
Kojto	71:53949e6131f6	445	if ( ep->num == 0 )
Kojto	71:53949e6131f6	446	{
Kojto	71:53949e6131f6	447	ep->in = false;
Kojto	71:53949e6131f6	448	}
Kojto	71:53949e6131f6	449	else if ( ep->in != false )
Kojto	71:53949e6131f6	450	{
Kojto	71:53949e6131f6	451	INT_Enable();
Kojto	71:53949e6131f6	452	DEBUG_USB_API_PUTS( "\nUSBD_Read(), Illegal EP direction" );
Kojto	71:53949e6131f6	453	EFM_ASSERT( false );
Kojto	71:53949e6131f6	454	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	455	}
Kojto	71:53949e6131f6	456
Kojto	71:53949e6131f6	457	ep->state = D_EP_RECEIVING;
Kojto	71:53949e6131f6	458	ep->xferCompleteCb = callback;
Kojto	71:53949e6131f6	459
Kojto	71:53949e6131f6	460	USBD_ArmEp( ep );
Kojto	71:53949e6131f6	461	INT_Enable();
Kojto	71:53949e6131f6	462	return USB_STATUS_OK;
Kojto	71:53949e6131f6	463	}
Kojto	71:53949e6131f6	464
Kojto	71:53949e6131f6	465	/*************************************************************************//
Kojto	71:53949e6131f6	466	* @brief
Kojto	71:53949e6131f6	467	* Perform a remote wakeup signalling sequence.
Kojto	71:53949e6131f6	468	*
Kojto	71:53949e6131f6	469	* @note
Kojto	71:53949e6131f6	470	* It is the responsibility of the application to ensure that remote wakeup
Kojto	71:53949e6131f6	471	* is not attempted before the device has been suspended for at least 5
Kojto	71:53949e6131f6	472	* miliseconds. This function should not be called from within an interrupt
Kojto	71:53949e6131f6	473	* handler.
Kojto	71:53949e6131f6	474	*
Kojto	71:53949e6131f6	475	* @return
Kojto	71:53949e6131f6	476	* @ref USB_STATUS_OK on success, else an appropriate error code.
Kojto	71:53949e6131f6	477	******************************************************************************/
Kojto	71:53949e6131f6	478	int USBD_RemoteWakeup( void )
Kojto	71:53949e6131f6	479	{
Kojto	71:53949e6131f6	480	INT_Disable();
Kojto	71:53949e6131f6	481
Kojto	71:53949e6131f6	482	if ( ( dev->state != USBD_STATE_SUSPENDED ) \|\|
Kojto	71:53949e6131f6	483	( dev->remoteWakeupEnabled == false ) )
Kojto	71:53949e6131f6	484	{
Kojto	71:53949e6131f6	485	INT_Enable();
Kojto	71:53949e6131f6	486	DEBUG_USB_API_PUTS( "\nUSBD_RemoteWakeup(), Illegal remote wakeup" );
Kojto	71:53949e6131f6	487	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	488	}
Kojto	71:53949e6131f6	489
Kojto	71:53949e6131f6	490	USBDHAL_SetRemoteWakeup();
Kojto	71:53949e6131f6	491	INT_Enable();
Kojto	71:53949e6131f6	492	USBTIMER_DelayMs( 10 );
Kojto	71:53949e6131f6	493	INT_Disable();
Kojto	71:53949e6131f6	494	USBDHAL_ClearRemoteWakeup();
Kojto	71:53949e6131f6	495	INT_Enable();
Kojto	71:53949e6131f6	496	return USB_STATUS_OK;
Kojto	71:53949e6131f6	497	}
Kojto	71:53949e6131f6	498
Kojto	71:53949e6131f6	499	/*************************************************************************//
Kojto	71:53949e6131f6	500	* @brief
Kojto	71:53949e6131f6	501	* Check if it is ok to enter energy mode EM2.
Kojto	71:53949e6131f6	502	*
Kojto	71:53949e6131f6	503	* @note
Kojto	71:53949e6131f6	504	* Before entering EM2 both the USB hardware and the USB stack must be in a
Kojto	71:53949e6131f6	505	* certain state, this function checks if all conditions for entering EM2
Kojto	71:53949e6131f6	506	* is met.
Kojto	71:53949e6131f6	507	* Refer to the @ref usb_device_powersave section for more information.
Kojto	71:53949e6131f6	508	*
Kojto	71:53949e6131f6	509	* @return
Kojto	71:53949e6131f6	510	* True if ok to enter EM2, false otherwise.
Kojto	71:53949e6131f6	511	******************************************************************************/
Kojto	71:53949e6131f6	512	bool USBD_SafeToEnterEM2( void )
Kojto	71:53949e6131f6	513	{
Kojto	71:53949e6131f6	514	#if ( USB_PWRSAVE_MODE )
Kojto	71:53949e6131f6	515	return USBD_poweredDown ? true : false;
Kojto	71:53949e6131f6	516	#else
Kojto	71:53949e6131f6	517	return false;
Kojto	71:53949e6131f6	518	#endif
Kojto	71:53949e6131f6	519	}
Kojto	71:53949e6131f6	520
Kojto	71:53949e6131f6	521	/** @cond DO_NOT_INCLUDE_WITH_DOXYGEN */
Kojto	71:53949e6131f6	522
Kojto	71:53949e6131f6	523	void USBD_SetUsbState( USBD_State_TypeDef newState )
Kojto	71:53949e6131f6	524	{
Kojto	71:53949e6131f6	525	USBD_State_TypeDef currentState;
Kojto	71:53949e6131f6	526
Kojto	71:53949e6131f6	527	currentState = dev->state;
Kojto	71:53949e6131f6	528	if ( newState == USBD_STATE_SUSPENDED )
Kojto	71:53949e6131f6	529	{
Kojto	71:53949e6131f6	530	dev->savedState = currentState;
Kojto	71:53949e6131f6	531	}
Kojto	71:53949e6131f6	532
Kojto	71:53949e6131f6	533	dev->lastState = dev->state;
Kojto	71:53949e6131f6	534	dev->state = newState;
Kojto	71:53949e6131f6	535
Kojto	71:53949e6131f6	536	if ( ( dev->callbacks->usbStateChange ) &&
Kojto	71:53949e6131f6	537	( currentState != newState ) )
Kojto	71:53949e6131f6	538	{
Kojto	71:53949e6131f6	539	/* When we transition to a state "lower" than CONFIGURED
Kojto	71:53949e6131f6	540	* we must reset the endpoint data
Kojto	71:53949e6131f6	541	*/
Kojto	71:53949e6131f6	542	if ( (dev->lastState == USBD_STATE_CONFIGURED \|\|
Kojto	71:53949e6131f6	543	dev->lastState == USBD_STATE_SUSPENDED ) &&
Kojto	71:53949e6131f6	544	dev->state < USBD_STATE_CONFIGURED )
Kojto	71:53949e6131f6	545	{
Kojto	71:53949e6131f6	546	USBD_ResetEndpoints();
Kojto	71:53949e6131f6	547	}
Kojto	71:53949e6131f6	548
Kojto	71:53949e6131f6	549	dev->callbacks->usbStateChange( currentState, newState );
Kojto	71:53949e6131f6	550	}
Kojto	71:53949e6131f6	551	}
Kojto	71:53949e6131f6	552
Kojto	71:53949e6131f6	553	/** @endcond */
Kojto	71:53949e6131f6	554
Kojto	71:53949e6131f6	555	/*************************************************************************//
Kojto	71:53949e6131f6	556	* @brief
Kojto	71:53949e6131f6	557	* Set an endpoint in the stalled (halted) state.
Kojto	71:53949e6131f6	558	*
Kojto	71:53949e6131f6	559	* @param[in] epAddr
Kojto	71:53949e6131f6	560	* The address of the endpoint to stall.
Kojto	71:53949e6131f6	561	*
Kojto	71:53949e6131f6	562	* @return
Kojto	71:53949e6131f6	563	* @ref USB_STATUS_OK on success, else an appropriate error code.
Kojto	71:53949e6131f6	564	******************************************************************************/
Kojto	71:53949e6131f6	565	int USBD_StallEp( int epAddr )
Kojto	71:53949e6131f6	566	{
Kojto	71:53949e6131f6	567	USB_Status_TypeDef retVal;
Kojto	71:53949e6131f6	568	USBD_Ep_TypeDef *ep = USBD_GetEpFromAddr( epAddr );
Kojto	71:53949e6131f6	569
Kojto	71:53949e6131f6	570	if ( ep == NULL )
Kojto	71:53949e6131f6	571	{
Kojto	71:53949e6131f6	572	DEBUG_USB_API_PUTS( "\nUSBD_StallEp(), Illegal request" );
Kojto	71:53949e6131f6	573	EFM_ASSERT( false );
Kojto	71:53949e6131f6	574	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	575	}
Kojto	71:53949e6131f6	576
Kojto	71:53949e6131f6	577	if ( ep->num == 0 )
Kojto	71:53949e6131f6	578	{
Kojto	71:53949e6131f6	579	DEBUG_USB_API_PUTS( "\nUSBD_StallEp(), Illegal endpoint" );
Kojto	71:53949e6131f6	580	EFM_ASSERT( false );
Kojto	71:53949e6131f6	581	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	582	}
Kojto	71:53949e6131f6	583
Kojto	71:53949e6131f6	584	INT_Disable();
Kojto	71:53949e6131f6	585	retVal = USBDHAL_StallEp( ep );
Kojto	71:53949e6131f6	586	INT_Enable();
Kojto	71:53949e6131f6	587
Kojto	71:53949e6131f6	588	if ( retVal != USB_STATUS_OK )
Kojto	71:53949e6131f6	589	{
Kojto	71:53949e6131f6	590	retVal = USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	591	}
Kojto	71:53949e6131f6	592
Kojto	71:53949e6131f6	593	return retVal;
Kojto	71:53949e6131f6	594	}
Kojto	71:53949e6131f6	595
Kojto	71:53949e6131f6	596	/*************************************************************************//
Kojto	71:53949e6131f6	597	* @brief
Kojto	71:53949e6131f6	598	* Stop USB device stack operation.
Kojto	71:53949e6131f6	599	*
Kojto	71:53949e6131f6	600	* @details
Kojto	71:53949e6131f6	601	* The data-line pullup resistor is turned off, USB interrupts are disabled,
Kojto	71:53949e6131f6	602	* and finally the USB pins are disabled.
Kojto	71:53949e6131f6	603	******************************************************************************/
Kojto	71:53949e6131f6	604	void USBD_Stop( void )
Kojto	71:53949e6131f6	605	{
Kojto	71:53949e6131f6	606	USBD_Disconnect();
Kojto	71:53949e6131f6	607	NVIC_DisableIRQ( USB_IRQn );
Kojto	71:53949e6131f6	608	USBHAL_DisableGlobalInt();
Kojto	71:53949e6131f6	609	USBHAL_DisableUsbInt();
Kojto	71:53949e6131f6	610	USBHAL_DisablePhyPins();
Kojto	71:53949e6131f6	611	USBD_SetUsbState( USBD_STATE_NONE );
Kojto	71:53949e6131f6	612	/* Turn off USB clocks. */
Kojto	71:53949e6131f6	613	CMU->HFCORECLKEN0 &= ~(CMU_HFCORECLKEN0_USB \| CMU_HFCORECLKEN0_USBC);
Kojto	71:53949e6131f6	614	}
Kojto	71:53949e6131f6	615
Kojto	71:53949e6131f6	616	/*************************************************************************//
Kojto	71:53949e6131f6	617	* @brief
Kojto	71:53949e6131f6	618	* Reset stall state on a stalled (halted) endpoint.
Kojto	71:53949e6131f6	619	*
Kojto	71:53949e6131f6	620	* @param[in] epAddr
Kojto	71:53949e6131f6	621	* The address of the endpoint to un-stall.
Kojto	71:53949e6131f6	622	*
Kojto	71:53949e6131f6	623	* @return
Kojto	71:53949e6131f6	624	* @ref USB_STATUS_OK on success, else an appropriate error code.
Kojto	71:53949e6131f6	625	******************************************************************************/
Kojto	71:53949e6131f6	626	int USBD_UnStallEp( int epAddr )
Kojto	71:53949e6131f6	627	{
Kojto	71:53949e6131f6	628	USB_Status_TypeDef retVal;
Kojto	71:53949e6131f6	629	USBD_Ep_TypeDef *ep = USBD_GetEpFromAddr( epAddr );
Kojto	71:53949e6131f6	630
Kojto	71:53949e6131f6	631	if ( ep == NULL )
Kojto	71:53949e6131f6	632	{
Kojto	71:53949e6131f6	633	DEBUG_USB_API_PUTS( "\nUSBD_UnStallEp(), Illegal request" );
Kojto	71:53949e6131f6	634	EFM_ASSERT( false );
Kojto	71:53949e6131f6	635	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	636	}
Kojto	71:53949e6131f6	637
Kojto	71:53949e6131f6	638	if ( ep->num == 0 )
Kojto	71:53949e6131f6	639	{
Kojto	71:53949e6131f6	640	DEBUG_USB_API_PUTS( "\nUSBD_UnStallEp(), Illegal endpoint" );
Kojto	71:53949e6131f6	641	EFM_ASSERT( false );
Kojto	71:53949e6131f6	642	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	643	}
Kojto	71:53949e6131f6	644
Kojto	71:53949e6131f6	645	INT_Disable();
Kojto	71:53949e6131f6	646	retVal = USBDHAL_UnStallEp( ep );
Kojto	71:53949e6131f6	647	INT_Enable();
Kojto	71:53949e6131f6	648
Kojto	71:53949e6131f6	649	if ( retVal != USB_STATUS_OK )
Kojto	71:53949e6131f6	650	{
Kojto	71:53949e6131f6	651	retVal = USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	652	}
Kojto	71:53949e6131f6	653
Kojto	71:53949e6131f6	654	return retVal;
Kojto	71:53949e6131f6	655	}
Kojto	71:53949e6131f6	656
Kojto	71:53949e6131f6	657	/*************************************************************************//
Kojto	71:53949e6131f6	658	* @brief
Kojto	71:53949e6131f6	659	* Start a write (IN) transfer on an endpoint.
Kojto	71:53949e6131f6	660	*
Kojto	71:53949e6131f6	661	* @param[in] epAddr
Kojto	71:53949e6131f6	662	* Endpoint address.
Kojto	71:53949e6131f6	663	*
Kojto	71:53949e6131f6	664	* @param[in] data
Kojto	71:53949e6131f6	665	* Pointer to transfer data buffer. This buffer must be WORD (4 byte) aligned.
Kojto	71:53949e6131f6	666	*
Kojto	71:53949e6131f6	667	* @param[in] byteCount
Kojto	71:53949e6131f6	668	* Transfer length.
Kojto	71:53949e6131f6	669	*
Kojto	71:53949e6131f6	670	* @param[in] callback
Kojto	71:53949e6131f6	671	* Function to be called on transfer completion. Supply NULL if no callback
Kojto	71:53949e6131f6	672	* is needed. See @ref USB_XferCompleteCb_TypeDef.
Kojto	71:53949e6131f6	673	*
Kojto	71:53949e6131f6	674	* @return
Kojto	71:53949e6131f6	675	* @ref USB_STATUS_OK on success, else an appropriate error code.
Kojto	71:53949e6131f6	676	******************************************************************************/
Kojto	71:53949e6131f6	677	int USBD_Write( int epAddr, void *data, int byteCount,
Kojto	71:53949e6131f6	678	USB_XferCompleteCb_TypeDef callback )
Kojto	71:53949e6131f6	679	{
Kojto	71:53949e6131f6	680	USBD_Ep_TypeDef *ep = USBD_GetEpFromAddr( epAddr );
Kojto	71:53949e6131f6	681
Kojto	71:53949e6131f6	682	USB_PRINTF("USBD: Write addr %x, data %p, size %d, cb 0x%lx\n",
Kojto	71:53949e6131f6	683	epAddr, data, byteCount, (uint32_t)callback);
Kojto	71:53949e6131f6	684
Kojto	71:53949e6131f6	685	if ( ep == NULL )
Kojto	71:53949e6131f6	686	{
Kojto	71:53949e6131f6	687	DEBUG_USB_API_PUTS( "\nUSBD_Write(), Illegal endpoint" );
Kojto	71:53949e6131f6	688	EFM_ASSERT( false );
Kojto	71:53949e6131f6	689	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	690	}
Kojto	71:53949e6131f6	691
Kojto	71:53949e6131f6	692	if ( ( byteCount > MAX_XFER_LEN ) \|\|
Kojto	71:53949e6131f6	693	( ( byteCount / ep->packetSize ) > MAX_PACKETS_PR_XFER ) )
Kojto	71:53949e6131f6	694	{
Kojto	71:53949e6131f6	695	DEBUG_USB_API_PUTS( "\nUSBD_Write(), Illegal transfer size" );
Kojto	71:53949e6131f6	696	EFM_ASSERT( false );
Kojto	71:53949e6131f6	697	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	698	}
Kojto	71:53949e6131f6	699
Kojto	71:53949e6131f6	700	if ( (uint32_t)data & 3 )
Kojto	71:53949e6131f6	701	{
Kojto	71:53949e6131f6	702	DEBUG_USB_API_PUTS( "\nUSBD_Write(), Misaligned data buffer" );
Kojto	71:53949e6131f6	703	EFM_ASSERT( false );
Kojto	71:53949e6131f6	704	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	705	}
Kojto	71:53949e6131f6	706
Kojto	71:53949e6131f6	707	INT_Disable();
Kojto	71:53949e6131f6	708	if ( USBDHAL_EpIsStalled( ep ) )
Kojto	71:53949e6131f6	709	{
Kojto	71:53949e6131f6	710	INT_Enable();
Kojto	71:53949e6131f6	711	DEBUG_USB_API_PUTS( "\nUSBD_Write(), Endpoint is halted" );
Kojto	71:53949e6131f6	712	return USB_STATUS_EP_STALLED;
Kojto	71:53949e6131f6	713	}
Kojto	71:53949e6131f6	714
Kojto	71:53949e6131f6	715	if ( ep->state != D_EP_IDLE )
Kojto	71:53949e6131f6	716	{
Kojto	71:53949e6131f6	717	INT_Enable();
Kojto	71:53949e6131f6	718	DEBUG_USB_API_PUTS( "\nUSBD_Write(), Endpoint is busy" );
Kojto	71:53949e6131f6	719	return USB_STATUS_EP_BUSY;
Kojto	71:53949e6131f6	720	}
Kojto	71:53949e6131f6	721
Kojto	71:53949e6131f6	722	if ( ( ep->num > 0 ) && ( USBD_GetUsbState() != USBD_STATE_CONFIGURED ) )
Kojto	71:53949e6131f6	723	{
Kojto	71:53949e6131f6	724	INT_Enable();
Kojto	71:53949e6131f6	725	DEBUG_USB_API_PUTS( "\nUSBD_Write(), Device not configured" );
Kojto	71:53949e6131f6	726	return USB_STATUS_DEVICE_UNCONFIGURED;
Kojto	71:53949e6131f6	727	}
Kojto	71:53949e6131f6	728
Kojto	71:53949e6131f6	729	ep->buf = (uint8_t*)data;
Kojto	71:53949e6131f6	730	ep->remaining = byteCount;
Kojto	71:53949e6131f6	731	ep->xferred = 0;
Kojto	71:53949e6131f6	732
Kojto	71:53949e6131f6	733	if ( ep->num == 0 )
Kojto	71:53949e6131f6	734	{
Kojto	71:53949e6131f6	735	ep->in = true;
Kojto	71:53949e6131f6	736	}
Kojto	71:53949e6131f6	737	else if ( ep->in != true )
Kojto	71:53949e6131f6	738	{
Kojto	71:53949e6131f6	739	INT_Enable();
Kojto	71:53949e6131f6	740	DEBUG_USB_API_PUTS( "\nUSBD_Write(), Illegal EP direction" );
Kojto	71:53949e6131f6	741	EFM_ASSERT( false );
Kojto	71:53949e6131f6	742	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	743	}
Kojto	71:53949e6131f6	744
Kojto	71:53949e6131f6	745	ep->state = D_EP_TRANSMITTING;
Kojto	71:53949e6131f6	746	ep->xferCompleteCb = callback;
Kojto	71:53949e6131f6	747
Kojto	71:53949e6131f6	748	USBD_ArmEp( ep );
Kojto	71:53949e6131f6	749	INT_Enable();
Kojto	71:53949e6131f6	750	return USB_STATUS_OK;
Kojto	71:53949e6131f6	751	}
Kojto	71:53949e6131f6	752
Kojto	71:53949e6131f6	753	int USBD_SetAddress(uint8_t addr)
Kojto	71:53949e6131f6	754	{
Kojto	71:53949e6131f6	755	int retVal = USB_STATUS_REQ_ERR;
Kojto	71:53949e6131f6	756
Kojto	71:53949e6131f6	757	if ( dev->state == USBD_STATE_DEFAULT )
Kojto	71:53949e6131f6	758	{
Kojto	71:53949e6131f6	759	if ( addr != 0 )
Kojto	71:53949e6131f6	760	{
Kojto	71:53949e6131f6	761	USBD_SetUsbState( USBD_STATE_ADDRESSED );
Kojto	71:53949e6131f6	762	}
Kojto	71:53949e6131f6	763	USBDHAL_SetAddr( addr );
Kojto	71:53949e6131f6	764	retVal = USB_STATUS_OK;
Kojto	71:53949e6131f6	765	}
Kojto	71:53949e6131f6	766	else if ( dev->state == USBD_STATE_ADDRESSED )
Kojto	71:53949e6131f6	767	{
Kojto	71:53949e6131f6	768	if ( addr == 0 )
Kojto	71:53949e6131f6	769	{
Kojto	71:53949e6131f6	770	USBD_SetUsbState( USBD_STATE_DEFAULT );
Kojto	71:53949e6131f6	771	}
Kojto	71:53949e6131f6	772	USBDHAL_SetAddr( addr );
Kojto	71:53949e6131f6	773	retVal = USB_STATUS_OK;
Kojto	71:53949e6131f6	774	}
Kojto	71:53949e6131f6	775
Kojto	71:53949e6131f6	776	return retVal;
Kojto	71:53949e6131f6	777	}
Kojto	71:53949e6131f6	778
Kojto	71:53949e6131f6	779	/*************************************************************************//
Kojto	71:53949e6131f6	780	* @brief
Kojto	71:53949e6131f6	781	* Query the stall state of an endpoint
Kojto	71:53949e6131f6	782	*
Kojto	71:53949e6131f6	783	* @param[in] epAddr
Kojto	71:53949e6131f6	784	* The address of the endpoint to query.
Kojto	71:53949e6131f6	785	*
Kojto	71:53949e6131f6	786	* @return
Kojto	71:53949e6131f6	787	* True if endpoint is stalled, false otherwise
Kojto	71:53949e6131f6	788	******************************************************************************/
Kojto	71:53949e6131f6	789	int USBD_EpIsStalled(int epAddr)
Kojto	71:53949e6131f6	790	{
Kojto	71:53949e6131f6	791	USBD_Ep_TypeDef *ep = USBD_GetEpFromAddr( epAddr );
Kojto	71:53949e6131f6	792
Kojto	71:53949e6131f6	793	if( !ep )
Kojto	71:53949e6131f6	794	{
Kojto	71:53949e6131f6	795	return false;
Kojto	71:53949e6131f6	796	}
Kojto	71:53949e6131f6	797
Kojto	71:53949e6131f6	798	return USBDHAL_EpIsStalled(ep);
Kojto	71:53949e6131f6	799	}
Kojto	71:53949e6131f6	800
Kojto	71:53949e6131f6	801	/*************************************************************************//
Kojto	71:53949e6131f6	802	* @brief
Kojto	71:53949e6131f6	803	* Reset (remove) all client endpoints
Kojto	71:53949e6131f6	804	*
Kojto	71:53949e6131f6	805	* @details
Kojto	71:53949e6131f6	806	* Removes client endpoints, and resets the RX/TX fifos. No endpoints
Kojto	71:53949e6131f6	807	* other than EP0 can be used until added with @ref USBD_AddEndpoint.
Kojto	71:53949e6131f6	808	******************************************************************************/
Kojto	71:53949e6131f6	809	static void USBD_ResetEndpoints(void)
Kojto	71:53949e6131f6	810	{
Kojto	71:53949e6131f6	811	USBD_Ep_TypeDef *ep = &dev->ep[0];
Kojto	71:53949e6131f6	812
Kojto	71:53949e6131f6	813	numEps = 0;
Kojto	71:53949e6131f6	814	txFifoNum = 1;
Kojto	71:53949e6131f6	815
Kojto	71:53949e6131f6	816	totalTxFifoSize = ep->fifoSize * 1;
Kojto	71:53949e6131f6	817	totalRxFifoSize = (ep->fifoSize + 1) * 1;
Kojto	71:53949e6131f6	818	totalRxFifoSize += 10 + 1 + ( 2 * (MAX_NUM_OUT_EPS + 1) );
Kojto	71:53949e6131f6	819	}
Kojto	71:53949e6131f6	820
Kojto	71:53949e6131f6	821	/*************************************************************************//
Kojto	71:53949e6131f6	822	* @brief
Kojto	71:53949e6131f6	823	* Add a new endpoint
Kojto	71:53949e6131f6	824	*
Kojto	71:53949e6131f6	825	* @param[in] epAddr
Kojto	71:53949e6131f6	826	* Endpoint address
Kojto	71:53949e6131f6	827	*
Kojto	71:53949e6131f6	828	* @param[in] transferType
Kojto	71:53949e6131f6	829	* Endpoint type, one of @ref USB_EPTYPE_BULK, @ref USB_EPTYPE_INTR or
Kojto	71:53949e6131f6	830	* @ref USB_EPTYPE_ISOC.
Kojto	71:53949e6131f6	831	*
Kojto	71:53949e6131f6	832	* @param[in] maxPacketSize
Kojto	71:53949e6131f6	833	* Maximum packet size of the new endpoint, in bytes
Kojto	71:53949e6131f6	834	*
Kojto	71:53949e6131f6	835	* @param[in] bufferMult
Kojto	71:53949e6131f6	836	* FIFO buffer size multiplier
Kojto	71:53949e6131f6	837	*
Kojto	71:53949e6131f6	838	* @return
Kojto	71:53949e6131f6	839	* @ref USB_STATUS_OK on success, else an appropriate error code.
Kojto	71:53949e6131f6	840	******************************************************************************/
Kojto	71:53949e6131f6	841	int USBD_AddEndpoint(int epAddr, int transferType,
Kojto	71:53949e6131f6	842	int maxPacketSize, int bufferMult)
Kojto	71:53949e6131f6	843	{
Kojto	71:53949e6131f6	844	USBD_Ep_TypeDef *ep;
Kojto	71:53949e6131f6	845
Kojto	71:53949e6131f6	846	numEps++;
Kojto	71:53949e6131f6	847
Kojto	71:53949e6131f6	848	ep = &dev->ep[ numEps ];
Kojto	71:53949e6131f6	849	ep->in = ( epAddr & USB_SETUP_DIR_MASK ) != 0;
Kojto	71:53949e6131f6	850	ep->buf = NULL;
Kojto	71:53949e6131f6	851	ep->addr = epAddr;
Kojto	71:53949e6131f6	852	ep->num = ep->addr & USB_EPNUM_MASK;
Kojto	71:53949e6131f6	853	ep->mask = 1 << ep->num;
Kojto	71:53949e6131f6	854	ep->type = transferType;
Kojto	71:53949e6131f6	855	ep->packetSize = maxPacketSize;
Kojto	71:53949e6131f6	856	ep->remaining = 0;
Kojto	71:53949e6131f6	857	ep->xferred = 0;
Kojto	71:53949e6131f6	858	ep->state = D_EP_IDLE;
Kojto	71:53949e6131f6	859	ep->xferCompleteCb = NULL;
Kojto	71:53949e6131f6	860
Kojto	71:53949e6131f6	861	if ( ep->in )
Kojto	71:53949e6131f6	862	{
Kojto	71:53949e6131f6	863	ep->txFifoNum = txFifoNum++;
Kojto	71:53949e6131f6	864	ep->fifoSize = ( ( ep->packetSize + 3 ) / 4 ) * bufferMult;
Kojto	71:53949e6131f6	865	dev->inEpAddr2EpIndex[ ep->num ] = numEps;
Kojto	71:53949e6131f6	866	totalTxFifoSize += ep->fifoSize;
Kojto	71:53949e6131f6	867
Kojto	71:53949e6131f6	868	if ( ep->num > MAX_NUM_IN_EPS )
Kojto	71:53949e6131f6	869	{
Kojto	71:53949e6131f6	870	DEBUG_USB_API_PUTS( "\nUSBD_AddEndpoint(), Illegal IN EP address" );
Kojto	71:53949e6131f6	871	EFM_ASSERT( false );
Kojto	71:53949e6131f6	872	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	873	}
Kojto	71:53949e6131f6	874	}
Kojto	71:53949e6131f6	875	else
Kojto	71:53949e6131f6	876	{
Kojto	71:53949e6131f6	877	ep->fifoSize = ( ( ( ep->packetSize + 3 ) / 4 ) + 1 ) * bufferMult;
Kojto	71:53949e6131f6	878	dev->outEpAddr2EpIndex[ ep->num ] = numEps;
Kojto	71:53949e6131f6	879	totalRxFifoSize += ep->fifoSize;
Kojto	71:53949e6131f6	880
Kojto	71:53949e6131f6	881	if ( ep->num > MAX_NUM_OUT_EPS )
Kojto	71:53949e6131f6	882	{
Kojto	71:53949e6131f6	883	DEBUG_USB_API_PUTS( "\nUSBD_AddEndpoint(), Illegal OUT EP address" );
Kojto	71:53949e6131f6	884	EFM_ASSERT( false );
Kojto	71:53949e6131f6	885	return USB_STATUS_ILLEGAL;
Kojto	71:53949e6131f6	886	}
Kojto	71:53949e6131f6	887	}
Kojto	71:53949e6131f6	888
Kojto	71:53949e6131f6	889	USB_PRINTF("USBD: Added endpoint %d to slot %d, in %d, addr 0x%x, type %d, ps %d, fifo %ld (total tx %ld, rx %ld)\n",
Kojto	71:53949e6131f6	890	ep->num, numEps, ep->in, ep->addr, ep->type, ep->packetSize, ep->fifoSize,
Kojto	71:53949e6131f6	891	totalTxFifoSize, totalRxFifoSize);
Kojto	71:53949e6131f6	892
Kojto	71:53949e6131f6	893	INT_Disable();
Kojto	71:53949e6131f6	894	#if defined( CMU_OSCENCMD_USHFRCOEN )
Kojto	71:53949e6131f6	895	/* Happy Gecko workaround: disable LEM GATE mode if using ISOC endpoints. */
Kojto	71:53949e6131f6	896	if ( transferType == USB_EPTYPE_ISOC )
Kojto	71:53949e6131f6	897	{
Kojto	71:53949e6131f6	898	USB->CTRL = (USB->CTRL & ~_USB_CTRL_LEMOSCCTRL_MASK) \| USB_CTRL_LEMOSCCTRL_NONE;
Kojto	71:53949e6131f6	899	}
Kojto	71:53949e6131f6	900	#endif
Kojto	71:53949e6131f6	901
Kojto	71:53949e6131f6	902	int ret = USBDHAL_ReconfigureFifos(totalRxFifoSize, totalTxFifoSize);
Kojto	71:53949e6131f6	903	INT_Enable();
Kojto	71:53949e6131f6	904
Kojto	71:53949e6131f6	905	if( ret != USB_STATUS_OK ) {
Kojto	71:53949e6131f6	906	return ret;
Kojto	71:53949e6131f6	907	}
Kojto	71:53949e6131f6	908
Kojto	71:53949e6131f6	909	USBDHAL_ActivateEp(ep, false);
Kojto	71:53949e6131f6	910
Kojto	71:53949e6131f6	911	return USB_STATUS_OK;
Kojto	71:53949e6131f6	912	}
Kojto	71:53949e6131f6	913
Kojto	71:53949e6131f6	914
Kojto	71:53949e6131f6	915	/*************************************************************************//
Kojto	71:53949e6131f6	916	* @brief
Kojto	71:53949e6131f6	917	* Set an endpoint0 in the stalled (halted) state.
Kojto	71:53949e6131f6	918	*
Kojto	71:53949e6131f6	919	* @details
Kojto	71:53949e6131f6	920	* Temporarily stalls endpoint 0. Used to signal a failure to respond to
Kojto	71:53949e6131f6	921	* the host's setup packet.
Kojto	71:53949e6131f6	922	******************************************************************************/
Kojto	71:53949e6131f6	923	void USBD_StallEp0()
Kojto	71:53949e6131f6	924	{
Kojto	71:53949e6131f6	925	int const epAddr = 0;
Kojto	71:53949e6131f6	926	USBD_Ep_TypeDef *ep = USBD_GetEpFromAddr( epAddr );
Kojto	71:53949e6131f6	927	ep->in = true;
Kojto	71:53949e6131f6	928	USBDHAL_StallEp( ep ); /* Stall Ep0 IN */
Kojto	71:53949e6131f6	929	ep->in = false; /* OUT for next SETUP */
Kojto	71:53949e6131f6	930	USBDHAL_StallEp( ep ); /* Stall Ep0 OUT */
Kojto	71:53949e6131f6	931	#if !defined( USB_DOEP0INT_STUPPKTRCVD )
Kojto	71:53949e6131f6	932	USBDHAL_ReenableEp0Setup( dev ); /* Prepare for next SETUP pkt. */
Kojto	71:53949e6131f6	933	#else
Kojto	71:53949e6131f6	934	USBDHAL_StartEp0Setup( dev );
Kojto	71:53949e6131f6	935	#endif
Kojto	71:53949e6131f6	936	ep->state = D_EP_IDLE;
Kojto	71:53949e6131f6	937	}
Kojto	71:53949e6131f6	938
Kojto	71:53949e6131f6	939	/****** THE REST OF THE FILE IS DOCUMENTATION ONLY !******************//
Kojto	71:53949e6131f6	940	* @{
Kojto	71:53949e6131f6	941
Kojto	71:53949e6131f6	942	@page usb_device USB device stack library
Kojto	71:53949e6131f6	943
Kojto	71:53949e6131f6	944	The source files for the USB device stack resides in the usb directory
Kojto	71:53949e6131f6	945	and follows the naming convention: em_usbd<em>nnn</em>.c/h.
Kojto	71:53949e6131f6	946
Kojto	71:53949e6131f6	947	@li @ref usb_device_intro
Kojto	71:53949e6131f6	948	@li @ref usb_device_api
Kojto	71:53949e6131f6	949	@li @ref usb_device_conf
Kojto	71:53949e6131f6	950	@li @ref usb_device_powersave
Kojto	71:53949e6131f6	951	@li @ref usb_device_example1
Kojto	71:53949e6131f6	952
Kojto	71:53949e6131f6	953
Kojto	71:53949e6131f6	954	@n @section usb_device_intro Introduction
Kojto	71:53949e6131f6	955
Kojto	71:53949e6131f6	956	The USB device protocol stack provides an API which makes it possible to
Kojto	71:53949e6131f6	957	create USB devices with a minimum of effort. The device stack supports control,
Kojto	71:53949e6131f6	958	bulk and interrupt transfers.
Kojto	71:53949e6131f6	959
Kojto	71:53949e6131f6	960	The stack is highly configurable to suit various needs, it does also contain
Kojto	71:53949e6131f6	961	useful debugging features together with several demonstration projects to
Kojto	71:53949e6131f6	962	get you started fast.
Kojto	71:53949e6131f6	963
Kojto	71:53949e6131f6	964	We recommend that you read through this documentation, then proceed to build
Kojto	71:53949e6131f6	965	and test a few example projects before you start designing your own device.
Kojto	71:53949e6131f6	966
Kojto	71:53949e6131f6	967	@n @section usb_device_api The device stack API
Kojto	71:53949e6131f6	968
Kojto	71:53949e6131f6	969	This section contains brief descriptions of the functions in the API. You will
Kojto	71:53949e6131f6	970	find detailed information on input and output parameters and return values by
Kojto	71:53949e6131f6	971	clicking on the hyperlinked function names. It is also a good idea to study
Kojto	71:53949e6131f6	972	the code in the USB demonstration projects.
Kojto	71:53949e6131f6	973
Kojto	71:53949e6131f6	974	Your application code must include one header file: @em em_usb.h.
Kojto	71:53949e6131f6	975
Kojto	71:53949e6131f6	976	All functions defined in the API can be called from within interrupt handlers.
Kojto	71:53949e6131f6	977
Kojto	71:53949e6131f6	978	The USB stack use a hardware timer to keep track of time. TIMER0 is the
Kojto	71:53949e6131f6	979	default choice, refer to @ref usb_device_conf for other possibilities.
Kojto	71:53949e6131f6	980	Your application must not use the selected timer.
Kojto	71:53949e6131f6	981
Kojto	71:53949e6131f6	982	<b>Pitfalls:</b>@n
Kojto	71:53949e6131f6	983	The USB peripheral will fill your receive buffers in quantities of WORD's
Kojto	71:53949e6131f6	984	(4 bytes). Transmit and receive buffers must be WORD aligned, in
Kojto	71:53949e6131f6	985	addition when allocating storage for receive buffers, round size up to
Kojto	71:53949e6131f6	986	next WORD boundary. If it is possible that the host will send more data
Kojto	71:53949e6131f6	987	than your device expects, round buffer size up to the next multiple of
Kojto	71:53949e6131f6	988	maxpacket size for the relevant endpoint to avoid data corruption.
Kojto	71:53949e6131f6	989
Kojto	71:53949e6131f6	990	Transmit buffers passed to @htmlonly USBD_Write() @endhtmlonly must be
Kojto	71:53949e6131f6	991	statically allocated because @htmlonly USBD_Write() @endhtmlonly only
Kojto	71:53949e6131f6	992	initiates the transfer. When the host decide to actually perform the
Kojto	71:53949e6131f6	993	transfer, your data must be available.
Kojto	71:53949e6131f6	994
Kojto	71:53949e6131f6	995	@n @ref USBD_Init() @n
Kojto	71:53949e6131f6	996	This function is called to register your device and all its properties with
Kojto	71:53949e6131f6	997	the device stack. The application must fill in a @ref USBD_Init_TypeDef
Kojto	71:53949e6131f6	998	structure prior to calling. Refer to @ref DeviceInitCallbacks for the
Kojto	71:53949e6131f6	999	optional callback functions defined within this structure. When this
Kojto	71:53949e6131f6	1000	function has been called your device is ready to be enumerated by the USB
Kojto	71:53949e6131f6	1001	host.
Kojto	71:53949e6131f6	1002
Kojto	71:53949e6131f6	1003	@ref USBD_Read(), @ref USBD_Write() @n
Kojto	71:53949e6131f6	1004	These functions initiate data transfers.
Kojto	71:53949e6131f6	1005	@n @htmlonly USBD_Read() @endhtmlonly initiate a transfer of data @em
Kojto	71:53949e6131f6	1006	from host @em to device (an @em OUT transfer in USB terminology).
Kojto	71:53949e6131f6	1007	@n @htmlonly USBD_Write() @endhtmlonly initiate a transfer of data @em from
Kojto	71:53949e6131f6	1008	device @em to host (an @em IN transfer).
Kojto	71:53949e6131f6	1009
Kojto	71:53949e6131f6	1010	When the USB host actually performs the transfer, your application will be
Kojto	71:53949e6131f6	1011	notified by means of a callback function which you provide (optionally).
Kojto	71:53949e6131f6	1012	Refer to @ref TransferCallback for details of the callback functionality.
Kojto	71:53949e6131f6	1013
Kojto	71:53949e6131f6	1014	@ref USBD_AbortTransfer(), @ref USBD_AbortAllTransfers() @n
Kojto	71:53949e6131f6	1015	These functions terminate transfers that are initiated, but has not yet
Kojto	71:53949e6131f6	1016	taken place. If a transfer is initiated with @htmlonly USBD_Read()
Kojto	71:53949e6131f6	1017	or USBD_Write(), @endhtmlonly but the USB host never actually peform
Kojto	71:53949e6131f6	1018	the transfers, these functions will deactivate the transfer setup to make
Kojto	71:53949e6131f6	1019	the USB device endpoint hardware ready for new (and potentially) different
Kojto	71:53949e6131f6	1020	transfers.
Kojto	71:53949e6131f6	1021
Kojto	71:53949e6131f6	1022	@ref USBD_Connect(), @ref USBD_Disconnect() @n
Kojto	71:53949e6131f6	1023	These functions turns the data-line (D+ or D-) pullup on or off. They can be
Kojto	71:53949e6131f6	1024	used to force reenumeration. It's good practice to delay at least one second
Kojto	71:53949e6131f6	1025	between @htmlonly USBD_Disconnect() and USBD_Connect() @endhtmlonly
Kojto	71:53949e6131f6	1026	to allow the USB host to unload the currently active device driver.
Kojto	71:53949e6131f6	1027
Kojto	71:53949e6131f6	1028	@ref USBD_EpIsBusy() @n
Kojto	71:53949e6131f6	1029	Check if an endpoint is busy.
Kojto	71:53949e6131f6	1030
Kojto	71:53949e6131f6	1031	@ref USBD_StallEp(), @ref USBD_UnStallEp() @n
Kojto	71:53949e6131f6	1032	These functions stalls or un-stalls an endpoint. This functionality may not
Kojto	71:53949e6131f6	1033	be needed by your application, but the USB device stack use them in response
Kojto	71:53949e6131f6	1034	to standard setup commands SET_FEATURE and CLEAR_FEATURE. They may be useful
Kojto	71:53949e6131f6	1035	when implementing some USB classes, e.g. a mass storage device use them
Kojto	71:53949e6131f6	1036	extensively.
Kojto	71:53949e6131f6	1037
Kojto	71:53949e6131f6	1038	@ref USBD_RemoteWakeup() @n
Kojto	71:53949e6131f6	1039	Used in SUSPENDED state (see @ref USB_Status_TypeDef) to signal resume to
Kojto	71:53949e6131f6	1040	host. It's the applications responsibility to adhere to the USB standard
Kojto	71:53949e6131f6	1041	which states that a device can not signal resume before it has been
Kojto	71:53949e6131f6	1042	SUSPENDED for at least 5 ms. The function will also check the configuration
Kojto	71:53949e6131f6	1043	descriptor defined by the application to see if it is legal for the device
Kojto	71:53949e6131f6	1044	to signal resume.
Kojto	71:53949e6131f6	1045
Kojto	71:53949e6131f6	1046	@ref USBD_GetUsbState() @n
Kojto	71:53949e6131f6	1047	Returns the device USB state (see @ref USBD_State_TypeDef). Refer to
Kojto	71:53949e6131f6	1048	Figure 9-1. "Device State Diagram" in the USB revision 2.0 specification.
Kojto	71:53949e6131f6	1049
Kojto	71:53949e6131f6	1050	@ref USBD_GetUsbStateName() @n
Kojto	71:53949e6131f6	1051	Returns a text string naming a given USB device state.
Kojto	71:53949e6131f6	1052
Kojto	71:53949e6131f6	1053	@ref USBD_SafeToEnterEM2() @n
Kojto	71:53949e6131f6	1054	Check if it is ok to enter energy mode EM2. Refer to the
Kojto	71:53949e6131f6	1055	@ref usb_device_powersave section for more information.
Kojto	71:53949e6131f6	1056
Kojto	71:53949e6131f6	1057	@n @anchor TransferCallback <b>The transfer complete callback function:</b> @n
Kojto	71:53949e6131f6	1058	@n USB_XferCompleteCb_TypeDef() is called when a transfer completes. It is
Kojto	71:53949e6131f6	1059	called with three parameters, the status of the transfer, the number of
Kojto	71:53949e6131f6	1060	bytes transferred and the number of bytes remaining. It may not always be
Kojto	71:53949e6131f6	1061	needed to have a callback on transfer completion, but you should keep in
Kojto	71:53949e6131f6	1062	mind that a transfer may be aborted when you least expect it. A transfer
Kojto	71:53949e6131f6	1063	will be aborted if host stalls the endpoint, if host resets your device, if
Kojto	71:53949e6131f6	1064	host unconfigures your device or if you unplug your device cable and the
Kojto	71:53949e6131f6	1065	device is selfpowered.
Kojto	71:53949e6131f6	1066	@htmlonly USB_XferCompleteCb_TypeDef() @endhtmlonly is also called if your
Kojto	71:53949e6131f6	1067	application use @htmlonly USBD_AbortTransfer() or USBD_AbortAllTransfers()
Kojto	71:53949e6131f6	1068	@endhtmlonly calls.
Kojto	71:53949e6131f6	1069	@note This callback is called from within an interrupt handler with
Kojto	71:53949e6131f6	1070	interrupts disabled.
Kojto	71:53949e6131f6	1071
Kojto	71:53949e6131f6	1072	@n @anchor DeviceInitCallbacks <b>Optional callbacks passed to the stack via
Kojto	71:53949e6131f6	1073	the @ref USBD_Init() function:</b> @n
Kojto	71:53949e6131f6	1074	@n These callbacks are all optional, and it is up to the application
Kojto	71:53949e6131f6	1075	programmer to decide if the application needs the functionality they
Kojto	71:53949e6131f6	1076	provide.
Kojto	71:53949e6131f6	1077	@note These callbacks are all called from within an interrupt handler
Kojto	71:53949e6131f6	1078	with interrupts disabled.
Kojto	71:53949e6131f6	1079
Kojto	71:53949e6131f6	1080	USBD_UsbResetCb_TypeDef() is called each time reset signalling is sensed on
Kojto	71:53949e6131f6	1081	the USB wire.
Kojto	71:53949e6131f6	1082
Kojto	71:53949e6131f6	1083	@n USBD_SofIntCb_TypeDef() is called with framenumber as a parameter on
Kojto	71:53949e6131f6	1084	each SOF interrupt.
Kojto	71:53949e6131f6	1085
Kojto	71:53949e6131f6	1086	@n USBD_DeviceStateChangeCb_TypeDef() is called whenever the device state
Kojto	71:53949e6131f6	1087	change. Useful for detecting e.g. SUSPENDED state change in order to reduce
Kojto	71:53949e6131f6	1088	current consumption of buspowered devices. The USB HID keyboard example
Kojto	71:53949e6131f6	1089	project has a good example on how to use this callback.
Kojto	71:53949e6131f6	1090
Kojto	71:53949e6131f6	1091	@n USBD_IsSelfPoweredCb_TypeDef() is called by the device stack when host
Kojto	71:53949e6131f6	1092	queries the device with a standard setup GET_STATUS command to check if the
Kojto	71:53949e6131f6	1093	device is currently selfpowered or buspowered. This feature is only
Kojto	71:53949e6131f6	1094	applicable on selfpowered devices which also works when only buspower is
Kojto	71:53949e6131f6	1095	available.
Kojto	71:53949e6131f6	1096
Kojto	71:53949e6131f6	1097	@n USBD_SetupCmdCb_TypeDef() is called each time a setup command is
Kojto	71:53949e6131f6	1098	received from host. Use this callback to override or extend the default
Kojto	71:53949e6131f6	1099	handling of standard setup commands, and to implement class or vendor
Kojto	71:53949e6131f6	1100	specific setup commands. The USB HID keyboard example project has a good
Kojto	71:53949e6131f6	1101	example on how to use this callback.
Kojto	71:53949e6131f6	1102
Kojto	71:53949e6131f6	1103	@n <b>Utility functions:</b> @n
Kojto	71:53949e6131f6	1104	@n USB_PUTCHAR() Transmit a single char on the debug serial port.
Kojto	71:53949e6131f6	1105	@n @n USB_PUTS() Transmit a zero terminated string on the debug serial port.
Kojto	71:53949e6131f6	1106	@n @n USB_PRINTF() Transmit "printf" formated data on the debug serial port.
Kojto	71:53949e6131f6	1107	@n @n USB_GetErrorMsgString() Return an error message string for a given
Kojto	71:53949e6131f6	1108	error code.
Kojto	71:53949e6131f6	1109	@n @n USB_PrintErrorMsgString() Format and print a text string given an
Kojto	71:53949e6131f6	1110	error code, prepends an optional user supplied leader string.
Kojto	71:53949e6131f6	1111	@n @n USBTIMER_DelayMs() Active wait millisecond delay function. Can also be
Kojto	71:53949e6131f6	1112	used inside interrupt handlers.
Kojto	71:53949e6131f6	1113	@n @n USBTIMER_DelayUs() Active wait microsecond delay function. Can also be
Kojto	71:53949e6131f6	1114	used inside interrupt handlers.
Kojto	71:53949e6131f6	1115	@n @n USBTIMER_Init() Initialize the timer system. Called by @htmlonly
Kojto	71:53949e6131f6	1116	USBD_Init(), @endhtmlonly but your application must call it again to
Kojto	71:53949e6131f6	1117	reinitialize whenever you change the HFPERCLK frequency.
Kojto	71:53949e6131f6	1118	@n @n USBTIMER_Start() Start a timer. You can configure the USB device stack
Kojto	71:53949e6131f6	1119	to provide any number of timers. The timers have 1 ms resolution, your
Kojto	71:53949e6131f6	1120	application is notified of timeout by means of a callback.
Kojto	71:53949e6131f6	1121	@n @n USBTIMER_Stop() Stop a timer.
Kojto	71:53949e6131f6	1122
Kojto	71:53949e6131f6	1123	@n @section usb_device_conf Configuring the device stack
Kojto	71:53949e6131f6	1124
Kojto	71:53949e6131f6	1125	Your application must provide a header file named @em usbconfig.h. This file
Kojto	71:53949e6131f6	1126	must contain the following \#define's:@n @n
Kojto	71:53949e6131f6	1127	@verbatim
Kojto	71:53949e6131f6	1128	#define USB_DEVICE // Compile the stack for device mode.
Kojto	71:53949e6131f6	1129	#define NUM_EP_USED n // Your application use 'n' endpoints in
Kojto	71:53949e6131f6	1130	// addition to endpoint 0. @endverbatim
Kojto	71:53949e6131f6	1131
Kojto	71:53949e6131f6	1132	@n @em usbconfig.h may define the following items: @n @n
Kojto	71:53949e6131f6	1133	@verbatim
Kojto	71:53949e6131f6	1134	#define NUM_APP_TIMERS n // Your application needs 'n' timers
Kojto	71:53949e6131f6	1135
Kojto	71:53949e6131f6	1136	#define DEBUG_USB_API // Turn on API debug diagnostics.
Kojto	71:53949e6131f6	1137
Kojto	71:53949e6131f6	1138	// Some utility functions in the API needs printf. These
Kojto	71:53949e6131f6	1139	// functions have "print" in their name. This macro enables
Kojto	71:53949e6131f6	1140	// these functions.
Kojto	71:53949e6131f6	1141	#define USB_USE_PRINTF // Enable utility print functions.
Kojto	71:53949e6131f6	1142
Kojto	71:53949e6131f6	1143	// Define a function for transmitting a single char on the serial port.
Kojto	71:53949e6131f6	1144	extern int RETARGET_WriteChar(char c);
Kojto	71:53949e6131f6	1145	#define USER_PUTCHAR RETARGET_WriteChar
Kojto	71:53949e6131f6	1146
Kojto	71:53949e6131f6	1147	#define USB_TIMER USB_TIMERn // Select which hardware timer the USB stack
Kojto	71:53949e6131f6	1148	// is allowed to use. Valid values are n=0,1,2...
Kojto	71:53949e6131f6	1149	// corresponding to TIMER0, TIMER1, ...
Kojto	71:53949e6131f6	1150	// If not specified, TIMER0 is used
Kojto	71:53949e6131f6	1151
Kojto	71:53949e6131f6	1152	#define USB_VBUS_SWITCH_NOT_PRESENT // Hardware does not have a VBUS switch
Kojto	71:53949e6131f6	1153
Kojto	71:53949e6131f6	1154	#define USB_CORECLK_HFRCO // Devices supporting crystal-less USB can use
Kojto	71:53949e6131f6	1155	// HFRCO as core clock, default is HFXO
Kojto	71:53949e6131f6	1156	@endverbatim
Kojto	71:53949e6131f6	1157
Kojto	71:53949e6131f6	1158	@n You are strongly encouraged to start application development with DEBUG_USB_API
Kojto	71:53949e6131f6	1159	turned on. When DEBUG_USB_API is turned on and USER_PUTCHAR is defined, useful
Kojto	71:53949e6131f6	1160	debugging information will be output on the development kit serial port.
Kojto	71:53949e6131f6	1161	Compiling with the DEBUG_EFM_USER flag will also enable all asserts
Kojto	71:53949e6131f6	1162	in both @em emlib and in the USB stack. If asserts are enabled and
Kojto	71:53949e6131f6	1163	USER_PUTCHAR defined, assert texts will be output on the serial port.
Kojto	71:53949e6131f6	1164
Kojto	71:53949e6131f6	1165	You application must include @em retargetserial.c if DEBUG_USB_API is defined
Kojto	71:53949e6131f6	1166	and @em retargetio.c if USB_USE_PRINTF is defined.
Kojto	71:53949e6131f6	1167	These files reside in the @em drivers
Kojto	71:53949e6131f6	1168	directory in the software package for your development board. Refer to
Kojto	71:53949e6131f6	1169	@ref usb_device_powersave for energy-saving mode configurations.
Kojto	71:53949e6131f6	1170
Kojto	71:53949e6131f6	1171	@n @section usb_device_powersave Energy-saving modes
Kojto	71:53949e6131f6	1172
Kojto	71:53949e6131f6	1173	The device stack provides two energy saving levels. The first level is to
Kojto	71:53949e6131f6	1174	set the USB peripheral in energy saving mode, the next level is to enter
Kojto	71:53949e6131f6	1175	Energy Mode 2 (EM2). These energy saving modes can be applied when the device
Kojto	71:53949e6131f6	1176	is suspended by the USB host, or when when the device is not connected to a
Kojto	71:53949e6131f6	1177	USB host.
Kojto	71:53949e6131f6	1178	In addition to this an application can use energy modes EM1 and EM2. There
Kojto	71:53949e6131f6	1179	are no restrictions on when EM1 can be entered, EM2 can only be entered
Kojto	71:53949e6131f6	1180	when the USB device is suspended or detached from host.
Kojto	71:53949e6131f6	1181
Kojto	71:53949e6131f6	1182	Energy-saving modes are selected with a \#define in @em usbconfig.h, default
Kojto	71:53949e6131f6	1183	selection is to not use any energy saving modes.@n @n
Kojto	71:53949e6131f6	1184	@verbatim
Kojto	71:53949e6131f6	1185	#define USB_PWRSAVE_MODE (USB_PWRSAVE_MODE_ONSUSPEND \| USB_PWRSAVE_MODE_ENTEREM2)@endverbatim
Kojto	71:53949e6131f6	1186
Kojto	71:53949e6131f6	1187	There are three flags available, the flags can be or'ed together as shown above.
Kojto	71:53949e6131f6	1188
Kojto	71:53949e6131f6	1189	<b>\#define USB_PWRSAVE_MODE_ONSUSPEND</b>@n Set USB peripheral in low power
Kojto	71:53949e6131f6	1190	mode on suspend.
Kojto	71:53949e6131f6	1191
Kojto	71:53949e6131f6	1192	<b>\#define USB_PWRSAVE_MODE_ONVBUSOFF</b>@n Set USB peripheral in low power
Kojto	71:53949e6131f6	1193	mode when not attached to a host. This mode assumes that the internal voltage
Kojto	71:53949e6131f6	1194	regulator is used and that the VREGI pin of the chip is connected to VBUS.
Kojto	71:53949e6131f6	1195	This option can not be used with bus-powered devices.
Kojto	71:53949e6131f6	1196
Kojto	71:53949e6131f6	1197	<b>\#define USB_PWRSAVE_MODE_ENTEREM2</b>@n Enter EM2 when USB peripheral is
Kojto	71:53949e6131f6	1198	in low power mode.
Kojto	71:53949e6131f6	1199
Kojto	71:53949e6131f6	1200	When the USB peripheral is set in low power mode, it must be clocked by a 32kHz
Kojto	71:53949e6131f6	1201	clock. Both LFXO and LFRCO can be used, but only LFXO guarantee USB specification
Kojto	71:53949e6131f6	1202	compliance. Selection is done with a \#define in @em usbconfig.h.@n @n
Kojto	71:53949e6131f6	1203	@verbatim
Kojto	71:53949e6131f6	1204	#define USB_USBC_32kHz_CLK USB_USBC_32kHz_CLK_LFXO @endverbatim
Kojto	71:53949e6131f6	1205	Two flags are available, <b>USB_USBC_32kHz_CLK_LFXO</b> and
Kojto	71:53949e6131f6	1206	<b>USB_USBC_32kHz_CLK_LFRCO</b>. <b>USB_USBC_32kHz_CLK_LFXO</b> is selected
Kojto	71:53949e6131f6	1207	by default.
Kojto	71:53949e6131f6	1208
Kojto	71:53949e6131f6	1209	The USB HID keyboard and Mass Storage device example projects demonstrate
Kojto	71:53949e6131f6	1210	different energy-saving modes.
Kojto	71:53949e6131f6	1211
Kojto	71:53949e6131f6	1212	<b>Example 1:</b>
Kojto	71:53949e6131f6	1213	Leave all energy saving to the stack, the device enters EM2 on suspend and
Kojto	71:53949e6131f6	1214	when detached from host. @n
Kojto	71:53949e6131f6	1215	@verbatim
Kojto	71:53949e6131f6	1216	In usbconfig.h:
Kojto	71:53949e6131f6	1217
Kojto	71:53949e6131f6	1218	#define USB_PWRSAVE_MODE (USB_PWRSAVE_MODE_ONSUSPEND \| USB_PWRSAVE_MODE_ONVBUSOFF \| USB_PWRSAVE_MODE_ENTEREM2)
Kojto	71:53949e6131f6	1219	@endverbatim
Kojto	71:53949e6131f6	1220
Kojto	71:53949e6131f6	1221	@n <b>Example 2:</b>
Kojto	71:53949e6131f6	1222	Let the stack control energy saving in the USB periheral but let your
Kojto	71:53949e6131f6	1223	application control energy modes EM1 and EM2. @n
Kojto	71:53949e6131f6	1224	@verbatim
Kojto	71:53949e6131f6	1225	In usbconfig.h:
Kojto	71:53949e6131f6	1226
Kojto	71:53949e6131f6	1227	#define USB_PWRSAVE_MODE (USB_PWRSAVE_MODE_ONSUSPEND \| USB_PWRSAVE_MODE_ONVBUSOFF)
Kojto	71:53949e6131f6	1228
Kojto	71:53949e6131f6	1229	In application code:
Kojto	71:53949e6131f6	1230
Kojto	71:53949e6131f6	1231	if ( USBD_SafeToEnterEM2() )
Kojto	71:53949e6131f6	1232	EMU_EnterEM2(true);
Kojto	71:53949e6131f6	1233	else
Kojto	71:53949e6131f6	1234	EMU_EnterEM1(); @endverbatim
Kojto	71:53949e6131f6	1235
Kojto	71:53949e6131f6	1236	@n @section usb_device_example1 Vendor unique device example application
Kojto	71:53949e6131f6	1237
Kojto	71:53949e6131f6	1238	This example represents the most simple USB device imaginable. It's purpose
Kojto	71:53949e6131f6	1239	is to turn user LED's on or off under control of vendor unique setup commands.
Kojto	71:53949e6131f6	1240	The device will rely on @em libusb device driver on the host, a host
Kojto	71:53949e6131f6	1241	application @em EFM32-LedApp.exe is bundled with the example.
Kojto	71:53949e6131f6	1242
Kojto	71:53949e6131f6	1243	The main() is really simple ! @n @n
Kojto	71:53949e6131f6	1244	@verbatim
Kojto	71:53949e6131f6	1245	#include "em_usb.h"
Kojto	71:53949e6131f6	1246
Kojto	71:53949e6131f6	1247	#include "descriptors.h"
Kojto	71:53949e6131f6	1248
Kojto	71:53949e6131f6	1249	int main( void )
Kojto	71:53949e6131f6	1250	{
Kojto	71:53949e6131f6	1251	BSP_Init(BSP_INIT_DEFAULT); // Initialize DK board register access
Kojto	71:53949e6131f6	1252	CMU_ClockSelectSet( cmuClock_HF, cmuSelect_HFXO );
Kojto	71:53949e6131f6	1253	BSP_LedsSet(0); // Turn off all LED's
Kojto	71:53949e6131f6	1254
Kojto	71:53949e6131f6	1255	ConsoleDebugInit(); // Initialize UART for debug diagnostics
Kojto	71:53949e6131f6	1256
Kojto	71:53949e6131f6	1257	USB_PUTS( "\nEFM32 USB LED Vendor Unique Device example\n" );
Kojto	71:53949e6131f6	1258
Kojto	71:53949e6131f6	1259	USBD_Init( &initstruct ); // GO !
Kojto	71:53949e6131f6	1260
Kojto	71:53949e6131f6	1261	//When using a debugger it is pratical to uncomment the following three
Kojto	71:53949e6131f6	1262	//lines to force host to re-enumerate the device.
Kojto	71:53949e6131f6	1263
Kojto	71:53949e6131f6	1264	//USBD_Disconnect();
Kojto	71:53949e6131f6	1265	//USBTIMER_DelayMs( 1000 );
Kojto	71:53949e6131f6	1266	//USBD_Connect();
Kojto	71:53949e6131f6	1267
Kojto	71:53949e6131f6	1268	for (;;) {}
Kojto	71:53949e6131f6	1269	} @endverbatim
Kojto	71:53949e6131f6	1270
Kojto	71:53949e6131f6	1271	@n Configure the device stack in <em>usbconfig.h</em>: @n @n
Kojto	71:53949e6131f6	1272	@verbatim
Kojto	71:53949e6131f6	1273	#define USB_DEVICE // Compile stack for device mode.
Kojto	71:53949e6131f6	1274
Kojto	71:53949e6131f6	1275	// **************************************************************************
Kojto	71:53949e6131f6	1276
Kojto	71:53949e6131f6	1277	Specify number of endpoints used (in addition to EP0).
Kojto	71:53949e6131f6	1278
Kojto	71:53949e6131f6	1279	*****************************************************************************
Kojto	71:53949e6131f6	1280	#define NUM_EP_USED 0 // EP0 is the only endpoint used.
Kojto	71:53949e6131f6	1281
Kojto	71:53949e6131f6	1282	// **************************************************************************
Kojto	71:53949e6131f6	1283
Kojto	71:53949e6131f6	1284	Configure serial port debug output.
Kojto	71:53949e6131f6	1285
Kojto	71:53949e6131f6	1286	*****************************************************************************
Kojto	71:53949e6131f6	1287	// Prototype a function for transmitting a single char on the serial port.
Kojto	71:53949e6131f6	1288	extern int RETARGET_WriteChar(char c);
Kojto	71:53949e6131f6	1289	#define USER_PUTCHAR RETARGET_WriteChar
Kojto	71:53949e6131f6	1290
Kojto	71:53949e6131f6	1291	// Enable debug diagnostics from API functions (illegal input params etc.)
Kojto	71:53949e6131f6	1292	#define DEBUG_USB_API @endverbatim
Kojto	71:53949e6131f6	1293
Kojto	71:53949e6131f6	1294	@n Define device properties and fill in USB initstruct in
Kojto	71:53949e6131f6	1295	<em>descriptors.h</em>: @n @n
Kojto	71:53949e6131f6	1296	@verbatim
Kojto	71:53949e6131f6	1297	EFM32_ALIGN(4)
Kojto	71:53949e6131f6	1298	static const USB_DeviceDescriptor_TypeDef deviceDesc __attribute__ ((aligned(4))) =
Kojto	71:53949e6131f6	1299	{
Kojto	71:53949e6131f6	1300	.bLength = USB_DEVICE_DESCSIZE,
Kojto	71:53949e6131f6	1301	.bDescriptorType = USB_DEVICE_DESCRIPTOR,
Kojto	71:53949e6131f6	1302	.bcdUSB = 0x0200,
Kojto	71:53949e6131f6	1303	.bDeviceClass = 0xFF,
Kojto	71:53949e6131f6	1304	.bDeviceSubClass = 0,
Kojto	71:53949e6131f6	1305	.bDeviceProtocol = 0,
Kojto	71:53949e6131f6	1306	.bMaxPacketSize0 = USB_FS_CTRL_EP_MAXSIZE,
Kojto	71:53949e6131f6	1307	.idVendor = 0x10C4,
Kojto	71:53949e6131f6	1308	.idProduct = 0x0001,
Kojto	71:53949e6131f6	1309	.bcdDevice = 0x0000,
Kojto	71:53949e6131f6	1310	.iManufacturer = 1,
Kojto	71:53949e6131f6	1311	.iProduct = 2,
Kojto	71:53949e6131f6	1312	.iSerialNumber = 3,
Kojto	71:53949e6131f6	1313	.bNumConfigurations = 1
Kojto	71:53949e6131f6	1314	};
Kojto	71:53949e6131f6	1315
Kojto	71:53949e6131f6	1316	EFM32_ALIGN(4)
Kojto	71:53949e6131f6	1317	static const uint8_t configDesc[] __attribute__ ((aligned(4)))=
Kojto	71:53949e6131f6	1318	{
Kojto	71:53949e6131f6	1319	// * Configuration descriptor *
Kojto	71:53949e6131f6	1320	USB_CONFIG_DESCSIZE, // bLength
Kojto	71:53949e6131f6	1321	USB_CONFIG_DESCRIPTOR, // bDescriptorType
Kojto	71:53949e6131f6	1322	USB_CONFIG_DESCSIZE + // wTotalLength (LSB)
Kojto	71:53949e6131f6	1323	USB_INTERFACE_DESCSIZE,
Kojto	71:53949e6131f6	1324	(USB_CONFIG_DESCSIZE + // wTotalLength (MSB)
Kojto	71:53949e6131f6	1325	USB_INTERFACE_DESCSIZE)>>8,
Kojto	71:53949e6131f6	1326	1, // bNumInterfaces
Kojto	71:53949e6131f6	1327	1, // bConfigurationValue
Kojto	71:53949e6131f6	1328	0, // iConfiguration
Kojto	71:53949e6131f6	1329	CONFIG_DESC_BM_RESERVED_D7 \| // bmAttrib: Self powered
Kojto	71:53949e6131f6	1330	CONFIG_DESC_BM_SELFPOWERED,
Kojto	71:53949e6131f6	1331	CONFIG_DESC_MAXPOWER_mA( 100 ), // bMaxPower: 100 mA
Kojto	71:53949e6131f6	1332
Kojto	71:53949e6131f6	1333	// * Interface descriptor *
Kojto	71:53949e6131f6	1334	USB_INTERFACE_DESCSIZE, // bLength
Kojto	71:53949e6131f6	1335	USB_INTERFACE_DESCRIPTOR, // bDescriptorType
Kojto	71:53949e6131f6	1336	0, // bInterfaceNumber
Kojto	71:53949e6131f6	1337	0, // bAlternateSetting
Kojto	71:53949e6131f6	1338	NUM_EP_USED, // bNumEndpoints
Kojto	71:53949e6131f6	1339	0xFF, // bInterfaceClass
Kojto	71:53949e6131f6	1340	0, // bInterfaceSubClass
Kojto	71:53949e6131f6	1341	0, // bInterfaceProtocol
Kojto	71:53949e6131f6	1342	0, // iInterface
Kojto	71:53949e6131f6	1343	};
Kojto	71:53949e6131f6	1344
Kojto	71:53949e6131f6	1345	STATIC_CONST_STRING_DESC_LANGID( langID, 0x04, 0x09 );
Kojto	71:53949e6131f6	1346	STATIC_CONST_STRING_DESC( iManufacturer, 'E','n','e','r','g','y',' ', \
Kojto	71:53949e6131f6	1347	'M','i','c','r','o',' ','A','S' );
Kojto	71:53949e6131f6	1348	STATIC_CONST_STRING_DESC( iProduct , 'V','e','n','d','o','r',' ', \
Kojto	71:53949e6131f6	1349	'U','n','i','q','u','e',' ', \
Kojto	71:53949e6131f6	1350	'L','E','D',' ', \
Kojto	71:53949e6131f6	1351	'D','e','v','i','c','e' );
Kojto	71:53949e6131f6	1352	STATIC_CONST_STRING_DESC( iSerialNumber, '0','0','0','0','0','0', \
Kojto	71:53949e6131f6	1353	'0','0','1','2','3','4' );
Kojto	71:53949e6131f6	1354
Kojto	71:53949e6131f6	1355	static const void * const strings[] =
Kojto	71:53949e6131f6	1356	{
Kojto	71:53949e6131f6	1357	&langID,
Kojto	71:53949e6131f6	1358	&iManufacturer,
Kojto	71:53949e6131f6	1359	&iProduct,
Kojto	71:53949e6131f6	1360	&iSerialNumber
Kojto	71:53949e6131f6	1361	};
Kojto	71:53949e6131f6	1362
Kojto	71:53949e6131f6	1363	// Endpoint buffer sizes
Kojto	71:53949e6131f6	1364	// 1 = single buffer, 2 = double buffering, 3 = tripple buffering ...
Kojto	71:53949e6131f6	1365	static const uint8_t bufferingMultiplier[ NUM_EP_USED + 1 ] = { 1 };
Kojto	71:53949e6131f6	1366
Kojto	71:53949e6131f6	1367	static const USBD_Callbacks_TypeDef callbacks =
Kojto	71:53949e6131f6	1368	{
Kojto	71:53949e6131f6	1369	.usbReset = NULL,
Kojto	71:53949e6131f6	1370	.usbStateChange = NULL,
Kojto	71:53949e6131f6	1371	.setupCmd = SetupCmd,
Kojto	71:53949e6131f6	1372	.isSelfPowered = NULL,
Kojto	71:53949e6131f6	1373	.sofInt = NULL
Kojto	71:53949e6131f6	1374	};
Kojto	71:53949e6131f6	1375
Kojto	71:53949e6131f6	1376	static const USBD_Init_TypeDef initstruct =
Kojto	71:53949e6131f6	1377	{
Kojto	71:53949e6131f6	1378	.deviceDescriptor = &deviceDesc,
Kojto	71:53949e6131f6	1379	.configDescriptor = configDesc,
Kojto	71:53949e6131f6	1380	.stringDescriptors = strings,
Kojto	71:53949e6131f6	1381	.numberOfStrings = sizeof(strings)/sizeof(void*),
Kojto	71:53949e6131f6	1382	.callbacks = &callbacks,
Kojto	71:53949e6131f6	1383	.bufferingMultiplier = bufferingMultiplier
Kojto	71:53949e6131f6	1384	}; @endverbatim
Kojto	71:53949e6131f6	1385
Kojto	71:53949e6131f6	1386	@n Now we have to implement vendor unique USB setup commands to control the
Kojto	71:53949e6131f6	1387	LED's (see callbacks variable above). Notice that the buffer variable below is
Kojto	71:53949e6131f6	1388	statically allocated because @htmlonly USBD_Write() @endhtmlonly only
Kojto	71:53949e6131f6	1389	initiates the transfer. When the host actually performs the transfer, the
Kojto	71:53949e6131f6	1390	SetupCmd() function will have returned ! @n @n
Kojto	71:53949e6131f6	1391
Kojto	71:53949e6131f6	1392	@verbatim
Kojto	71:53949e6131f6	1393	#define VND_GET_LEDS 0x10
Kojto	71:53949e6131f6	1394	#define VND_SET_LED 0x11
Kojto	71:53949e6131f6	1395
Kojto	71:53949e6131f6	1396	static int SetupCmd( const USB_Setup_TypeDef *setup )
Kojto	71:53949e6131f6	1397	{
Kojto	71:53949e6131f6	1398	int retVal;
Kojto	71:53949e6131f6	1399	uint16_t leds;
Kojto	71:53949e6131f6	1400	static uint32_t buffer;
Kojto	71:53949e6131f6	1401	uint8_t pBuffer = (uint8_t)&buffer;
Kojto	71:53949e6131f6	1402
Kojto	71:53949e6131f6	1403	retVal = USB_STATUS_REQ_UNHANDLED;
Kojto	71:53949e6131f6	1404
Kojto	71:53949e6131f6	1405	if ( setup->Type == USB_SETUP_TYPE_VENDOR )
Kojto	71:53949e6131f6	1406	{
Kojto	71:53949e6131f6	1407	switch ( setup->bRequest )
Kojto	71:53949e6131f6	1408	{
Kojto	71:53949e6131f6	1409	case VND_GET_LEDS:
Kojto	71:53949e6131f6	1410	// ********************
Kojto	71:53949e6131f6	1411	*pBuffer = BSP_LedsGet() & 0x1F;
Kojto	71:53949e6131f6	1412	retVal = USBD_Write( 0, pBuffer, setup->wLength, NULL );
Kojto	71:53949e6131f6	1413	break;
Kojto	71:53949e6131f6	1414
Kojto	71:53949e6131f6	1415	case VND_SET_LED:
Kojto	71:53949e6131f6	1416	// ********************
Kojto	71:53949e6131f6	1417	leds = DVK_getLEDs() & 0x1F;
Kojto	71:53949e6131f6	1418	if ( setup->wValue )
Kojto	71:53949e6131f6	1419	{
Kojto	71:53949e6131f6	1420	leds \|= LED0 << setup->wIndex;
Kojto	71:53949e6131f6	1421	}
Kojto	71:53949e6131f6	1422	else
Kojto	71:53949e6131f6	1423	{
Kojto	71:53949e6131f6	1424	leds &= ~( LED0 << setup->wIndex );
Kojto	71:53949e6131f6	1425	}
Kojto	71:53949e6131f6	1426	BSP_LedsSet( leds );
Kojto	71:53949e6131f6	1427	retVal = USB_STATUS_OK;
Kojto	71:53949e6131f6	1428	break;
Kojto	71:53949e6131f6	1429	}
Kojto	71:53949e6131f6	1430	}
Kojto	71:53949e6131f6	1431
Kojto	71:53949e6131f6	1432	return retVal;
Kojto	71:53949e6131f6	1433	}@endverbatim
Kojto	71:53949e6131f6	1434
Kojto	71:53949e6131f6	1435	* @}**************************************************************************/
Kojto	71:53949e6131f6	1436
Kojto	71:53949e6131f6	1437	#endif /* defined( USB_DEVICE ) */
Kojto	71:53949e6131f6	1438	#endif /* defined( USB_PRESENT ) && ( USB_COUNT == 1 ) */

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Type:	Library
Created:	30 Sep 2020
Imports:	20
Forks:	0
Commits:	73
Dependents:	1
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Followers:	62

targets/TARGET_Silicon_Labs/src/em_usbd.c@72:14a22343c610, 2020-09-30 (annotated)

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