DataLogIMU-BARO - interface to chr_6dm and Baro bmp085

Users » belloula » Code » DataLogIMU-BARO

Abdelmalek BELLOULA / Mbed 2 deprecated DataLogIMU-BARO

interface to chr_6dm and Baro bmp085

USBHostLite/usbhost_lpc17xx.c@0:d07617f8ede9, 2011-10-17 (annotated)

Committer:: belloula
Date:: Mon Oct 17 19:43:06 2011 +0000
Revision:: 0:d07617f8ede9

Who changed what in which revision?

User	Revision	Line number	New contents of line
belloula	0:d07617f8ede9	1	/*
belloula	0:d07617f8ede9	2	**************************************************************************************************************
belloula	0:d07617f8ede9	3	* NXP USB Host Stack
belloula	0:d07617f8ede9	4	*
belloula	0:d07617f8ede9	5	* (c) Copyright 2008, NXP SemiConductors
belloula	0:d07617f8ede9	6	* (c) Copyright 2008, OnChip Technologies LLC
belloula	0:d07617f8ede9	7	* All Rights Reserved
belloula	0:d07617f8ede9	8	*
belloula	0:d07617f8ede9	9	* www.nxp.com
belloula	0:d07617f8ede9	10	* www.onchiptech.com
belloula	0:d07617f8ede9	11	*
belloula	0:d07617f8ede9	12	* File : usbhost_lpc17xx.c
belloula	0:d07617f8ede9	13	* Programmer(s) : Ravikanth.P
belloula	0:d07617f8ede9	14	* Version :
belloula	0:d07617f8ede9	15	*
belloula	0:d07617f8ede9	16	**************************************************************************************************************
belloula	0:d07617f8ede9	17	*/
belloula	0:d07617f8ede9	18
belloula	0:d07617f8ede9	19	/*
belloula	0:d07617f8ede9	20	**************************************************************************************************************
belloula	0:d07617f8ede9	21	* INCLUDE HEADER FILES
belloula	0:d07617f8ede9	22	**************************************************************************************************************
belloula	0:d07617f8ede9	23	*/
belloula	0:d07617f8ede9	24
belloula	0:d07617f8ede9	25	#include "usbhost_lpc17xx.h"
belloula	0:d07617f8ede9	26
belloula	0:d07617f8ede9	27	/*
belloula	0:d07617f8ede9	28	**************************************************************************************************************
belloula	0:d07617f8ede9	29	* GLOBAL VARIABLES
belloula	0:d07617f8ede9	30	**************************************************************************************************************
belloula	0:d07617f8ede9	31	*/
belloula	0:d07617f8ede9	32	int gUSBConnected;
belloula	0:d07617f8ede9	33
belloula	0:d07617f8ede9	34	volatile USB_INT32U HOST_RhscIntr = 0; /* Root Hub Status Change interrupt */
belloula	0:d07617f8ede9	35	volatile USB_INT32U HOST_WdhIntr = 0; /* Semaphore to wait until the TD is submitted */
belloula	0:d07617f8ede9	36	volatile USB_INT08U HOST_TDControlStatus = 0;
belloula	0:d07617f8ede9	37	volatile HCED EDCtrl; / Control endpoint descriptor structure */
belloula	0:d07617f8ede9	38	volatile HCED EDBulkIn; / BulkIn endpoint descriptor structure */
belloula	0:d07617f8ede9	39	volatile HCED EDBulkOut; / BulkOut endpoint descriptor structure */
belloula	0:d07617f8ede9	40	volatile HCTD TDHead; / Head transfer descriptor structure */
belloula	0:d07617f8ede9	41	volatile HCTD TDTail; / Tail transfer descriptor structure */
belloula	0:d07617f8ede9	42	volatile HCCA Hcca; / Host Controller Communications Area structure */
belloula	0:d07617f8ede9	43	USB_INT16U TDBufNonVol; / Identical to TDBuffer just to reduce compiler warnings */
belloula	0:d07617f8ede9	44	volatile USB_INT08U TDBuffer; / Current Buffer Pointer of transfer descriptor */
belloula	0:d07617f8ede9	45
belloula	0:d07617f8ede9	46	// USB host structures
belloula	0:d07617f8ede9	47	// AHB SRAM block 1
belloula	0:d07617f8ede9	48	#define HOSTBASEADDR 0x2007C000
belloula	0:d07617f8ede9	49	// reserve memory for the linker
belloula	0:d07617f8ede9	50	static USB_INT08U HostBuf[0x200] __attribute__((at(HOSTBASEADDR)));
belloula	0:d07617f8ede9	51	/*
belloula	0:d07617f8ede9	52	**************************************************************************************************************
belloula	0:d07617f8ede9	53	* DELAY IN MILLI SECONDS
belloula	0:d07617f8ede9	54	*
belloula	0:d07617f8ede9	55	* Description: This function provides a delay in milli seconds
belloula	0:d07617f8ede9	56	*
belloula	0:d07617f8ede9	57	* Arguments : delay The delay required
belloula	0:d07617f8ede9	58	*
belloula	0:d07617f8ede9	59	* Returns : None
belloula	0:d07617f8ede9	60	*
belloula	0:d07617f8ede9	61	**************************************************************************************************************
belloula	0:d07617f8ede9	62	*/
belloula	0:d07617f8ede9	63
belloula	0:d07617f8ede9	64	void Host_DelayMS (USB_INT32U delay)
belloula	0:d07617f8ede9	65	{
belloula	0:d07617f8ede9	66	volatile USB_INT32U i;
belloula	0:d07617f8ede9	67
belloula	0:d07617f8ede9	68
belloula	0:d07617f8ede9	69	for (i = 0; i < delay; i++) {
belloula	0:d07617f8ede9	70	Host_DelayUS(1000);
belloula	0:d07617f8ede9	71	}
belloula	0:d07617f8ede9	72	}
belloula	0:d07617f8ede9	73
belloula	0:d07617f8ede9	74	/*
belloula	0:d07617f8ede9	75	**************************************************************************************************************
belloula	0:d07617f8ede9	76	* DELAY IN MICRO SECONDS
belloula	0:d07617f8ede9	77	*
belloula	0:d07617f8ede9	78	* Description: This function provides a delay in micro seconds
belloula	0:d07617f8ede9	79	*
belloula	0:d07617f8ede9	80	* Arguments : delay The delay required
belloula	0:d07617f8ede9	81	*
belloula	0:d07617f8ede9	82	* Returns : None
belloula	0:d07617f8ede9	83	*
belloula	0:d07617f8ede9	84	**************************************************************************************************************
belloula	0:d07617f8ede9	85	*/
belloula	0:d07617f8ede9	86
belloula	0:d07617f8ede9	87	void Host_DelayUS (USB_INT32U delay)
belloula	0:d07617f8ede9	88	{
belloula	0:d07617f8ede9	89	volatile USB_INT32U i;
belloula	0:d07617f8ede9	90
belloula	0:d07617f8ede9	91
belloula	0:d07617f8ede9	92	for (i = 0; i < (4 * delay); i++) { /* This logic was tested. It gives app. 1 micro sec delay */
belloula	0:d07617f8ede9	93	;
belloula	0:d07617f8ede9	94	}
belloula	0:d07617f8ede9	95	}
belloula	0:d07617f8ede9	96
belloula	0:d07617f8ede9	97	// bits of the USB/OTG clock control register
belloula	0:d07617f8ede9	98	#define HOST_CLK_EN (1<<0)
belloula	0:d07617f8ede9	99	#define DEV_CLK_EN (1<<1)
belloula	0:d07617f8ede9	100	#define PORTSEL_CLK_EN (1<<3)
belloula	0:d07617f8ede9	101	#define AHB_CLK_EN (1<<4)
belloula	0:d07617f8ede9	102
belloula	0:d07617f8ede9	103	// bits of the USB/OTG clock status register
belloula	0:d07617f8ede9	104	#define HOST_CLK_ON (1<<0)
belloula	0:d07617f8ede9	105	#define DEV_CLK_ON (1<<1)
belloula	0:d07617f8ede9	106	#define PORTSEL_CLK_ON (1<<3)
belloula	0:d07617f8ede9	107	#define AHB_CLK_ON (1<<4)
belloula	0:d07617f8ede9	108
belloula	0:d07617f8ede9	109	// we need host clock, OTG/portsel clock and AHB clock
belloula	0:d07617f8ede9	110	#define CLOCK_MASK (HOST_CLK_EN \| PORTSEL_CLK_EN \| AHB_CLK_EN)
belloula	0:d07617f8ede9	111
belloula	0:d07617f8ede9	112	/*
belloula	0:d07617f8ede9	113	**************************************************************************************************************
belloula	0:d07617f8ede9	114	* INITIALIZE THE HOST CONTROLLER
belloula	0:d07617f8ede9	115	*
belloula	0:d07617f8ede9	116	* Description: This function initializes lpc17xx host controller
belloula	0:d07617f8ede9	117	*
belloula	0:d07617f8ede9	118	* Arguments : None
belloula	0:d07617f8ede9	119	*
belloula	0:d07617f8ede9	120	* Returns :
belloula	0:d07617f8ede9	121	*
belloula	0:d07617f8ede9	122	**************************************************************************************************************
belloula	0:d07617f8ede9	123	*/
belloula	0:d07617f8ede9	124	void Host_Init (void)
belloula	0:d07617f8ede9	125	{
belloula	0:d07617f8ede9	126	PRINT_Log("In Host_Init\n");
belloula	0:d07617f8ede9	127	NVIC_DisableIRQ(USB_IRQn); /* Disable the USB interrupt source */
belloula	0:d07617f8ede9	128
belloula	0:d07617f8ede9	129	// turn on power for USB
belloula	0:d07617f8ede9	130	LPC_SC->PCONP \|= (1UL<<31);
belloula	0:d07617f8ede9	131	// Enable USB host clock, port selection and AHB clock
belloula	0:d07617f8ede9	132	LPC_USB->USBClkCtrl \|= CLOCK_MASK;
belloula	0:d07617f8ede9	133	// Wait for clocks to become available
belloula	0:d07617f8ede9	134	while ((LPC_USB->USBClkSt & CLOCK_MASK) != CLOCK_MASK)
belloula	0:d07617f8ede9	135	;
belloula	0:d07617f8ede9	136
belloula	0:d07617f8ede9	137	// it seems the bits[0:1] mean the following
belloula	0:d07617f8ede9	138	// 0: U1=device, U2=host
belloula	0:d07617f8ede9	139	// 1: U1=host, U2=host
belloula	0:d07617f8ede9	140	// 2: reserved
belloula	0:d07617f8ede9	141	// 3: U1=host, U2=device
belloula	0:d07617f8ede9	142	// NB: this register is only available if OTG clock (aka "port select") is enabled!!
belloula	0:d07617f8ede9	143	// since we don't care about port 2, set just bit 0 to 1 (U1=host)
belloula	0:d07617f8ede9	144	LPC_USB->OTGStCtrl \|= 1;
belloula	0:d07617f8ede9	145
belloula	0:d07617f8ede9	146	// now that we've configured the ports, we can turn off the portsel clock
belloula	0:d07617f8ede9	147	LPC_USB->USBClkCtrl &= ~PORTSEL_CLK_EN;
belloula	0:d07617f8ede9	148
belloula	0:d07617f8ede9	149	// power pins are not connected on mbed, so we can skip them
belloula	0:d07617f8ede9	150	/* P1[18] = USB_UP_LED, 01 */
belloula	0:d07617f8ede9	151	/* P1[19] = /USB_PPWR, 10 */
belloula	0:d07617f8ede9	152	/* P1[22] = USB_PWRD, 10 */
belloula	0:d07617f8ede9	153	/* P1[27] = /USB_OVRCR, 10 */
belloula	0:d07617f8ede9	154	/*LPC_PINCON->PINSEL3 &= ~((3<<4) \| (3<<6) \| (3<<12) \| (3<<22));
belloula	0:d07617f8ede9	155	LPC_PINCON->PINSEL3 \|= ((1<<4)\|(2<<6) \| (2<<12) \| (2<<22)); // 0x00802080
belloula	0:d07617f8ede9	156	*/
belloula	0:d07617f8ede9	157
belloula	0:d07617f8ede9	158	// configure USB D+/D- pins
belloula	0:d07617f8ede9	159	/* P0[29] = USB_D+, 01 */
belloula	0:d07617f8ede9	160	/* P0[30] = USB_D-, 01 */
belloula	0:d07617f8ede9	161	LPC_PINCON->PINSEL1 &= ~((3<<26) \| (3<<28));
belloula	0:d07617f8ede9	162	LPC_PINCON->PINSEL1 \|= ((1<<26)\|(1<<28)); // 0x14000000
belloula	0:d07617f8ede9	163
belloula	0:d07617f8ede9	164	PRINT_Log("Initializing Host Stack\n");
belloula	0:d07617f8ede9	165
belloula	0:d07617f8ede9	166	Hcca = (volatile HCCA *)(HostBuf+0x000);
belloula	0:d07617f8ede9	167	TDHead = (volatile HCTD *)(HostBuf+0x100);
belloula	0:d07617f8ede9	168	TDTail = (volatile HCTD *)(HostBuf+0x110);
belloula	0:d07617f8ede9	169	EDCtrl = (volatile HCED *)(HostBuf+0x120);
belloula	0:d07617f8ede9	170	EDBulkIn = (volatile HCED *)(HostBuf+0x130);
belloula	0:d07617f8ede9	171	EDBulkOut = (volatile HCED *)(HostBuf+0x140);
belloula	0:d07617f8ede9	172	TDBuffer = (volatile USB_INT08U *)(HostBuf+0x150);
belloula	0:d07617f8ede9	173
belloula	0:d07617f8ede9	174	/* Initialize all the TDs, EDs and HCCA to 0 */
belloula	0:d07617f8ede9	175	Host_EDInit(EDCtrl);
belloula	0:d07617f8ede9	176	Host_EDInit(EDBulkIn);
belloula	0:d07617f8ede9	177	Host_EDInit(EDBulkOut);
belloula	0:d07617f8ede9	178	Host_TDInit(TDHead);
belloula	0:d07617f8ede9	179	Host_TDInit(TDTail);
belloula	0:d07617f8ede9	180	Host_HCCAInit(Hcca);
belloula	0:d07617f8ede9	181
belloula	0:d07617f8ede9	182	Host_DelayMS(50); /* Wait 50 ms before apply reset */
belloula	0:d07617f8ede9	183	LPC_USB->HcControl = 0; /* HARDWARE RESET */
belloula	0:d07617f8ede9	184	LPC_USB->HcControlHeadED = 0; /* Initialize Control list head to Zero */
belloula	0:d07617f8ede9	185	LPC_USB->HcBulkHeadED = 0; /* Initialize Bulk list head to Zero */
belloula	0:d07617f8ede9	186
belloula	0:d07617f8ede9	187	/* SOFTWARE RESET */
belloula	0:d07617f8ede9	188	LPC_USB->HcCommandStatus = OR_CMD_STATUS_HCR;
belloula	0:d07617f8ede9	189	LPC_USB->HcFmInterval = DEFAULT_FMINTERVAL; /* Write Fm Interval and Largest Data Packet Counter */
belloula	0:d07617f8ede9	190
belloula	0:d07617f8ede9	191	/* Put HC in operational state */
belloula	0:d07617f8ede9	192	LPC_USB->HcControl = (LPC_USB->HcControl & (~OR_CONTROL_HCFS)) \| OR_CONTROL_HC_OPER;
belloula	0:d07617f8ede9	193	LPC_USB->HcRhStatus = OR_RH_STATUS_LPSC; /* Set Global Power */
belloula	0:d07617f8ede9	194
belloula	0:d07617f8ede9	195	LPC_USB->HcHCCA = (USB_INT32U)Hcca;
belloula	0:d07617f8ede9	196	LPC_USB->HcInterruptStatus \|= LPC_USB->HcInterruptStatus; /* Clear Interrrupt Status */
belloula	0:d07617f8ede9	197
belloula	0:d07617f8ede9	198
belloula	0:d07617f8ede9	199	LPC_USB->HcInterruptEnable = OR_INTR_ENABLE_MIE \|
belloula	0:d07617f8ede9	200	OR_INTR_ENABLE_WDH \|
belloula	0:d07617f8ede9	201	OR_INTR_ENABLE_RHSC;
belloula	0:d07617f8ede9	202
belloula	0:d07617f8ede9	203	NVIC_SetPriority(USB_IRQn, 0); /* highest priority */
belloula	0:d07617f8ede9	204	/* Enable the USB Interrupt */
belloula	0:d07617f8ede9	205	NVIC_EnableIRQ(USB_IRQn);
belloula	0:d07617f8ede9	206	PRINT_Log("Host Initialized\n");
belloula	0:d07617f8ede9	207	}
belloula	0:d07617f8ede9	208
belloula	0:d07617f8ede9	209	/*
belloula	0:d07617f8ede9	210	**************************************************************************************************************
belloula	0:d07617f8ede9	211	* INTERRUPT SERVICE ROUTINE
belloula	0:d07617f8ede9	212	*
belloula	0:d07617f8ede9	213	* Description: This function services the interrupt caused by host controller
belloula	0:d07617f8ede9	214	*
belloula	0:d07617f8ede9	215	* Arguments : None
belloula	0:d07617f8ede9	216	*
belloula	0:d07617f8ede9	217	* Returns : None
belloula	0:d07617f8ede9	218	*
belloula	0:d07617f8ede9	219	**************************************************************************************************************
belloula	0:d07617f8ede9	220	*/
belloula	0:d07617f8ede9	221
belloula	0:d07617f8ede9	222	void USB_IRQHandler (void) __irq
belloula	0:d07617f8ede9	223	{
belloula	0:d07617f8ede9	224	USB_INT32U int_status;
belloula	0:d07617f8ede9	225	USB_INT32U ie_status;
belloula	0:d07617f8ede9	226
belloula	0:d07617f8ede9	227	int_status = LPC_USB->HcInterruptStatus; /* Read Interrupt Status */
belloula	0:d07617f8ede9	228	ie_status = LPC_USB->HcInterruptEnable; /* Read Interrupt enable status */
belloula	0:d07617f8ede9	229
belloula	0:d07617f8ede9	230	if (!(int_status & ie_status)) {
belloula	0:d07617f8ede9	231	return;
belloula	0:d07617f8ede9	232	} else {
belloula	0:d07617f8ede9	233
belloula	0:d07617f8ede9	234	int_status = int_status & ie_status;
belloula	0:d07617f8ede9	235	if (int_status & OR_INTR_STATUS_RHSC) { /* Root hub status change interrupt */
belloula	0:d07617f8ede9	236	if (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_CSC) {
belloula	0:d07617f8ede9	237	if (LPC_USB->HcRhStatus & OR_RH_STATUS_DRWE) {
belloula	0:d07617f8ede9	238	/*
belloula	0:d07617f8ede9	239	* When DRWE is on, Connect Status Change
belloula	0:d07617f8ede9	240	* means a remote wakeup event.
belloula	0:d07617f8ede9	241	*/
belloula	0:d07617f8ede9	242	HOST_RhscIntr = 1;// JUST SOMETHING FOR A BREAKPOINT
belloula	0:d07617f8ede9	243	}
belloula	0:d07617f8ede9	244	else {
belloula	0:d07617f8ede9	245	/*
belloula	0:d07617f8ede9	246	* When DRWE is off, Connect Status Change
belloula	0:d07617f8ede9	247	* is NOT a remote wakeup event
belloula	0:d07617f8ede9	248	*/
belloula	0:d07617f8ede9	249	if (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_CCS) {
belloula	0:d07617f8ede9	250	if (!gUSBConnected) {
belloula	0:d07617f8ede9	251	HOST_TDControlStatus = 0;
belloula	0:d07617f8ede9	252	HOST_WdhIntr = 0;
belloula	0:d07617f8ede9	253	HOST_RhscIntr = 1;
belloula	0:d07617f8ede9	254	gUSBConnected = 1;
belloula	0:d07617f8ede9	255	}
belloula	0:d07617f8ede9	256	else
belloula	0:d07617f8ede9	257	PRINT_Log("Spurious status change (connected)?\n");
belloula	0:d07617f8ede9	258	} else {
belloula	0:d07617f8ede9	259	if (gUSBConnected) {
belloula	0:d07617f8ede9	260	LPC_USB->HcInterruptEnable = 0; // why do we get multiple disc. rupts???
belloula	0:d07617f8ede9	261	HOST_RhscIntr = 0;
belloula	0:d07617f8ede9	262	gUSBConnected = 0;
belloula	0:d07617f8ede9	263	}
belloula	0:d07617f8ede9	264	else
belloula	0:d07617f8ede9	265	PRINT_Log("Spurious status change (disconnected)?\n");
belloula	0:d07617f8ede9	266	}
belloula	0:d07617f8ede9	267	}
belloula	0:d07617f8ede9	268	LPC_USB->HcRhPortStatus1 = OR_RH_PORT_CSC;
belloula	0:d07617f8ede9	269	}
belloula	0:d07617f8ede9	270	if (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_PRSC) {
belloula	0:d07617f8ede9	271	LPC_USB->HcRhPortStatus1 = OR_RH_PORT_PRSC;
belloula	0:d07617f8ede9	272	}
belloula	0:d07617f8ede9	273	}
belloula	0:d07617f8ede9	274	if (int_status & OR_INTR_STATUS_WDH) { /* Writeback Done Head interrupt */
belloula	0:d07617f8ede9	275	HOST_WdhIntr = 1;
belloula	0:d07617f8ede9	276	HOST_TDControlStatus = (TDHead->Control >> 28) & 0xf;
belloula	0:d07617f8ede9	277	}
belloula	0:d07617f8ede9	278	LPC_USB->HcInterruptStatus = int_status; /* Clear interrupt status register */
belloula	0:d07617f8ede9	279	}
belloula	0:d07617f8ede9	280	return;
belloula	0:d07617f8ede9	281	}
belloula	0:d07617f8ede9	282
belloula	0:d07617f8ede9	283	/*
belloula	0:d07617f8ede9	284	**************************************************************************************************************
belloula	0:d07617f8ede9	285	* PROCESS TRANSFER DESCRIPTOR
belloula	0:d07617f8ede9	286	*
belloula	0:d07617f8ede9	287	* Description: This function processes the transfer descriptor
belloula	0:d07617f8ede9	288	*
belloula	0:d07617f8ede9	289	* Arguments : ed Endpoint descriptor that contains this transfer descriptor
belloula	0:d07617f8ede9	290	* token SETUP, IN, OUT
belloula	0:d07617f8ede9	291	* buffer Current Buffer Pointer of the transfer descriptor
belloula	0:d07617f8ede9	292	* buffer_len Length of the buffer
belloula	0:d07617f8ede9	293	*
belloula	0:d07617f8ede9	294	* Returns : OK if TD submission is successful
belloula	0:d07617f8ede9	295	* ERROR if TD submission fails
belloula	0:d07617f8ede9	296	*
belloula	0:d07617f8ede9	297	**************************************************************************************************************
belloula	0:d07617f8ede9	298	*/
belloula	0:d07617f8ede9	299
belloula	0:d07617f8ede9	300	USB_INT32S Host_ProcessTD (volatile HCED *ed,
belloula	0:d07617f8ede9	301	volatile USB_INT32U token,
belloula	0:d07617f8ede9	302	volatile USB_INT08U *buffer,
belloula	0:d07617f8ede9	303	USB_INT32U buffer_len)
belloula	0:d07617f8ede9	304	{
belloula	0:d07617f8ede9	305	volatile USB_INT32U td_toggle;
belloula	0:d07617f8ede9	306
belloula	0:d07617f8ede9	307
belloula	0:d07617f8ede9	308	if (ed == EDCtrl) {
belloula	0:d07617f8ede9	309	if (token == TD_SETUP) {
belloula	0:d07617f8ede9	310	td_toggle = TD_TOGGLE_0;
belloula	0:d07617f8ede9	311	} else {
belloula	0:d07617f8ede9	312	td_toggle = TD_TOGGLE_1;
belloula	0:d07617f8ede9	313	}
belloula	0:d07617f8ede9	314	} else {
belloula	0:d07617f8ede9	315	td_toggle = 0;
belloula	0:d07617f8ede9	316	}
belloula	0:d07617f8ede9	317	TDHead->Control = (TD_ROUNDING \|
belloula	0:d07617f8ede9	318	token \|
belloula	0:d07617f8ede9	319	TD_DELAY_INT(0) \|
belloula	0:d07617f8ede9	320	td_toggle \|
belloula	0:d07617f8ede9	321	TD_CC);
belloula	0:d07617f8ede9	322	TDTail->Control = 0;
belloula	0:d07617f8ede9	323	TDHead->CurrBufPtr = (USB_INT32U) buffer;
belloula	0:d07617f8ede9	324	TDTail->CurrBufPtr = 0;
belloula	0:d07617f8ede9	325	TDHead->Next = (USB_INT32U) TDTail;
belloula	0:d07617f8ede9	326	TDTail->Next = 0;
belloula	0:d07617f8ede9	327	TDHead->BufEnd = (USB_INT32U)(buffer + (buffer_len - 1));
belloula	0:d07617f8ede9	328	TDTail->BufEnd = 0;
belloula	0:d07617f8ede9	329
belloula	0:d07617f8ede9	330	ed->HeadTd = (USB_INT32U)TDHead \| ((ed->HeadTd) & 0x00000002);
belloula	0:d07617f8ede9	331	ed->TailTd = (USB_INT32U)TDTail;
belloula	0:d07617f8ede9	332	ed->Next = 0;
belloula	0:d07617f8ede9	333
belloula	0:d07617f8ede9	334	if (ed == EDCtrl) {
belloula	0:d07617f8ede9	335	LPC_USB->HcControlHeadED = (USB_INT32U)ed;
belloula	0:d07617f8ede9	336	LPC_USB->HcCommandStatus = LPC_USB->HcCommandStatus \| OR_CMD_STATUS_CLF;
belloula	0:d07617f8ede9	337	LPC_USB->HcControl = LPC_USB->HcControl \| OR_CONTROL_CLE;
belloula	0:d07617f8ede9	338	} else {
belloula	0:d07617f8ede9	339	LPC_USB->HcBulkHeadED = (USB_INT32U)ed;
belloula	0:d07617f8ede9	340	LPC_USB->HcCommandStatus = LPC_USB->HcCommandStatus \| OR_CMD_STATUS_BLF;
belloula	0:d07617f8ede9	341	LPC_USB->HcControl = LPC_USB->HcControl \| OR_CONTROL_BLE;
belloula	0:d07617f8ede9	342	}
belloula	0:d07617f8ede9	343
belloula	0:d07617f8ede9	344	Host_WDHWait();
belloula	0:d07617f8ede9	345
belloula	0:d07617f8ede9	346	// if (!(TDHead->Control & 0xF0000000)) {
belloula	0:d07617f8ede9	347	if (!HOST_TDControlStatus) {
belloula	0:d07617f8ede9	348	return (OK);
belloula	0:d07617f8ede9	349	} else {
belloula	0:d07617f8ede9	350	return (ERR_TD_FAIL);
belloula	0:d07617f8ede9	351	}
belloula	0:d07617f8ede9	352	}
belloula	0:d07617f8ede9	353
belloula	0:d07617f8ede9	354	/*
belloula	0:d07617f8ede9	355	**************************************************************************************************************
belloula	0:d07617f8ede9	356	* ENUMERATE THE DEVICE
belloula	0:d07617f8ede9	357	*
belloula	0:d07617f8ede9	358	* Description: This function is used to enumerate the device connected
belloula	0:d07617f8ede9	359	*
belloula	0:d07617f8ede9	360	* Arguments : None
belloula	0:d07617f8ede9	361	*
belloula	0:d07617f8ede9	362	* Returns : None
belloula	0:d07617f8ede9	363	*
belloula	0:d07617f8ede9	364	**************************************************************************************************************
belloula	0:d07617f8ede9	365	*/
belloula	0:d07617f8ede9	366
belloula	0:d07617f8ede9	367	USB_INT32S Host_EnumDev (void)
belloula	0:d07617f8ede9	368	{
belloula	0:d07617f8ede9	369	USB_INT32S rc;
belloula	0:d07617f8ede9	370
belloula	0:d07617f8ede9	371	PRINT_Log("Connect a Mass Storage device\n");
belloula	0:d07617f8ede9	372	while (!HOST_RhscIntr)
belloula	0:d07617f8ede9	373	__WFI();
belloula	0:d07617f8ede9	374	Host_DelayMS(100); /* USB 2.0 spec says atleast 50ms delay beore port reset */
belloula	0:d07617f8ede9	375	LPC_USB->HcRhPortStatus1 = OR_RH_PORT_PRS; // Initiate port reset
belloula	0:d07617f8ede9	376	while (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_PRS)
belloula	0:d07617f8ede9	377	__WFI(); // Wait for port reset to complete...
belloula	0:d07617f8ede9	378	LPC_USB->HcRhPortStatus1 = OR_RH_PORT_PRSC; // ...and clear port reset signal
belloula	0:d07617f8ede9	379	Host_DelayMS(200); /* Wait for 100 MS after port reset */
belloula	0:d07617f8ede9	380
belloula	0:d07617f8ede9	381	EDCtrl->Control = 8 << 16; /* Put max pkt size = 8 */
belloula	0:d07617f8ede9	382	/* Read first 8 bytes of device desc */
belloula	0:d07617f8ede9	383	rc = HOST_GET_DESCRIPTOR(USB_DESCRIPTOR_TYPE_DEVICE, 0, TDBuffer, 8);
belloula	0:d07617f8ede9	384	if (rc != OK) {
belloula	0:d07617f8ede9	385	PRINT_Err(rc);
belloula	0:d07617f8ede9	386	return (rc);
belloula	0:d07617f8ede9	387	}
belloula	0:d07617f8ede9	388	EDCtrl->Control = TDBuffer[7] << 16; /* Get max pkt size of endpoint 0 */
belloula	0:d07617f8ede9	389	rc = HOST_SET_ADDRESS(1); /* Set the device address to 1 */
belloula	0:d07617f8ede9	390	if (rc != OK) {
belloula	0:d07617f8ede9	391	PRINT_Err(rc);
belloula	0:d07617f8ede9	392	return (rc);
belloula	0:d07617f8ede9	393	}
belloula	0:d07617f8ede9	394	Host_DelayMS(2);
belloula	0:d07617f8ede9	395	EDCtrl->Control = (EDCtrl->Control) \| 1; /* Modify control pipe with address 1 */
belloula	0:d07617f8ede9	396	/* Get the configuration descriptor */
belloula	0:d07617f8ede9	397	rc = HOST_GET_DESCRIPTOR(USB_DESCRIPTOR_TYPE_CONFIGURATION, 0, TDBuffer, 9);
belloula	0:d07617f8ede9	398	if (rc != OK) {
belloula	0:d07617f8ede9	399	PRINT_Err(rc);
belloula	0:d07617f8ede9	400	return (rc);
belloula	0:d07617f8ede9	401	}
belloula	0:d07617f8ede9	402	/* Get the first configuration data */
belloula	0:d07617f8ede9	403	rc = HOST_GET_DESCRIPTOR(USB_DESCRIPTOR_TYPE_CONFIGURATION, 0, TDBuffer, ReadLE16U(&TDBuffer[2]));
belloula	0:d07617f8ede9	404	if (rc != OK) {
belloula	0:d07617f8ede9	405	PRINT_Err(rc);
belloula	0:d07617f8ede9	406	return (rc);
belloula	0:d07617f8ede9	407	}
belloula	0:d07617f8ede9	408	rc = MS_ParseConfiguration(); /* Parse the configuration */
belloula	0:d07617f8ede9	409	if (rc != OK) {
belloula	0:d07617f8ede9	410	PRINT_Err(rc);
belloula	0:d07617f8ede9	411	return (rc);
belloula	0:d07617f8ede9	412	}
belloula	0:d07617f8ede9	413	rc = USBH_SET_CONFIGURATION(1); /* Select device configuration 1 */
belloula	0:d07617f8ede9	414	if (rc != OK) {
belloula	0:d07617f8ede9	415	PRINT_Err(rc);
belloula	0:d07617f8ede9	416	}
belloula	0:d07617f8ede9	417	Host_DelayMS(100); /* Some devices may require this delay */
belloula	0:d07617f8ede9	418	return (rc);
belloula	0:d07617f8ede9	419	}
belloula	0:d07617f8ede9	420
belloula	0:d07617f8ede9	421	/*
belloula	0:d07617f8ede9	422	**************************************************************************************************************
belloula	0:d07617f8ede9	423	* RECEIVE THE CONTROL INFORMATION
belloula	0:d07617f8ede9	424	*
belloula	0:d07617f8ede9	425	* Description: This function is used to receive the control information
belloula	0:d07617f8ede9	426	*
belloula	0:d07617f8ede9	427	* Arguments : bm_request_type
belloula	0:d07617f8ede9	428	* b_request
belloula	0:d07617f8ede9	429	* w_value
belloula	0:d07617f8ede9	430	* w_index
belloula	0:d07617f8ede9	431	* w_length
belloula	0:d07617f8ede9	432	* buffer
belloula	0:d07617f8ede9	433	*
belloula	0:d07617f8ede9	434	* Returns : OK if Success
belloula	0:d07617f8ede9	435	* ERROR if Failed
belloula	0:d07617f8ede9	436	*
belloula	0:d07617f8ede9	437	**************************************************************************************************************
belloula	0:d07617f8ede9	438	*/
belloula	0:d07617f8ede9	439
belloula	0:d07617f8ede9	440	USB_INT32S Host_CtrlRecv ( USB_INT08U bm_request_type,
belloula	0:d07617f8ede9	441	USB_INT08U b_request,
belloula	0:d07617f8ede9	442	USB_INT16U w_value,
belloula	0:d07617f8ede9	443	USB_INT16U w_index,
belloula	0:d07617f8ede9	444	USB_INT16U w_length,
belloula	0:d07617f8ede9	445	volatile USB_INT08U *buffer)
belloula	0:d07617f8ede9	446	{
belloula	0:d07617f8ede9	447	USB_INT32S rc;
belloula	0:d07617f8ede9	448
belloula	0:d07617f8ede9	449
belloula	0:d07617f8ede9	450	Host_FillSetup(bm_request_type, b_request, w_value, w_index, w_length);
belloula	0:d07617f8ede9	451	rc = Host_ProcessTD(EDCtrl, TD_SETUP, TDBuffer, 8);
belloula	0:d07617f8ede9	452	if (rc == OK) {
belloula	0:d07617f8ede9	453	if (w_length) {
belloula	0:d07617f8ede9	454	rc = Host_ProcessTD(EDCtrl, TD_IN, TDBuffer, w_length);
belloula	0:d07617f8ede9	455	}
belloula	0:d07617f8ede9	456	if (rc == OK) {
belloula	0:d07617f8ede9	457	rc = Host_ProcessTD(EDCtrl, TD_OUT, NULL, 0);
belloula	0:d07617f8ede9	458	}
belloula	0:d07617f8ede9	459	}
belloula	0:d07617f8ede9	460	return (rc);
belloula	0:d07617f8ede9	461	}
belloula	0:d07617f8ede9	462
belloula	0:d07617f8ede9	463	/*
belloula	0:d07617f8ede9	464	**************************************************************************************************************
belloula	0:d07617f8ede9	465	* SEND THE CONTROL INFORMATION
belloula	0:d07617f8ede9	466	*
belloula	0:d07617f8ede9	467	* Description: This function is used to send the control information
belloula	0:d07617f8ede9	468	*
belloula	0:d07617f8ede9	469	* Arguments : None
belloula	0:d07617f8ede9	470	*
belloula	0:d07617f8ede9	471	* Returns : OK if Success
belloula	0:d07617f8ede9	472	* ERR_INVALID_BOOTSIG if Failed
belloula	0:d07617f8ede9	473	*
belloula	0:d07617f8ede9	474	**************************************************************************************************************
belloula	0:d07617f8ede9	475	*/
belloula	0:d07617f8ede9	476
belloula	0:d07617f8ede9	477	USB_INT32S Host_CtrlSend ( USB_INT08U bm_request_type,
belloula	0:d07617f8ede9	478	USB_INT08U b_request,
belloula	0:d07617f8ede9	479	USB_INT16U w_value,
belloula	0:d07617f8ede9	480	USB_INT16U w_index,
belloula	0:d07617f8ede9	481	USB_INT16U w_length,
belloula	0:d07617f8ede9	482	volatile USB_INT08U *buffer)
belloula	0:d07617f8ede9	483	{
belloula	0:d07617f8ede9	484	USB_INT32S rc;
belloula	0:d07617f8ede9	485
belloula	0:d07617f8ede9	486
belloula	0:d07617f8ede9	487	Host_FillSetup(bm_request_type, b_request, w_value, w_index, w_length);
belloula	0:d07617f8ede9	488
belloula	0:d07617f8ede9	489	rc = Host_ProcessTD(EDCtrl, TD_SETUP, TDBuffer, 8);
belloula	0:d07617f8ede9	490	if (rc == OK) {
belloula	0:d07617f8ede9	491	if (w_length) {
belloula	0:d07617f8ede9	492	rc = Host_ProcessTD(EDCtrl, TD_OUT, TDBuffer, w_length);
belloula	0:d07617f8ede9	493	}
belloula	0:d07617f8ede9	494	if (rc == OK) {
belloula	0:d07617f8ede9	495	rc = Host_ProcessTD(EDCtrl, TD_IN, NULL, 0);
belloula	0:d07617f8ede9	496	}
belloula	0:d07617f8ede9	497	}
belloula	0:d07617f8ede9	498	return (rc);
belloula	0:d07617f8ede9	499	}
belloula	0:d07617f8ede9	500
belloula	0:d07617f8ede9	501	/*
belloula	0:d07617f8ede9	502	**************************************************************************************************************
belloula	0:d07617f8ede9	503	* FILL SETUP PACKET
belloula	0:d07617f8ede9	504	*
belloula	0:d07617f8ede9	505	* Description: This function is used to fill the setup packet
belloula	0:d07617f8ede9	506	*
belloula	0:d07617f8ede9	507	* Arguments : None
belloula	0:d07617f8ede9	508	*
belloula	0:d07617f8ede9	509	* Returns : OK if Success
belloula	0:d07617f8ede9	510	* ERR_INVALID_BOOTSIG if Failed
belloula	0:d07617f8ede9	511	*
belloula	0:d07617f8ede9	512	**************************************************************************************************************
belloula	0:d07617f8ede9	513	*/
belloula	0:d07617f8ede9	514
belloula	0:d07617f8ede9	515	void Host_FillSetup (USB_INT08U bm_request_type,
belloula	0:d07617f8ede9	516	USB_INT08U b_request,
belloula	0:d07617f8ede9	517	USB_INT16U w_value,
belloula	0:d07617f8ede9	518	USB_INT16U w_index,
belloula	0:d07617f8ede9	519	USB_INT16U w_length)
belloula	0:d07617f8ede9	520	{
belloula	0:d07617f8ede9	521	int i;
belloula	0:d07617f8ede9	522	for (i=0;i<w_length;i++)
belloula	0:d07617f8ede9	523	TDBuffer[i] = 0;
belloula	0:d07617f8ede9	524
belloula	0:d07617f8ede9	525	TDBuffer[0] = bm_request_type;
belloula	0:d07617f8ede9	526	TDBuffer[1] = b_request;
belloula	0:d07617f8ede9	527	WriteLE16U(&TDBuffer[2], w_value);
belloula	0:d07617f8ede9	528	WriteLE16U(&TDBuffer[4], w_index);
belloula	0:d07617f8ede9	529	WriteLE16U(&TDBuffer[6], w_length);
belloula	0:d07617f8ede9	530	}
belloula	0:d07617f8ede9	531
belloula	0:d07617f8ede9	532
belloula	0:d07617f8ede9	533
belloula	0:d07617f8ede9	534	/*
belloula	0:d07617f8ede9	535	**************************************************************************************************************
belloula	0:d07617f8ede9	536	* INITIALIZE THE TRANSFER DESCRIPTOR
belloula	0:d07617f8ede9	537	*
belloula	0:d07617f8ede9	538	* Description: This function initializes transfer descriptor
belloula	0:d07617f8ede9	539	*
belloula	0:d07617f8ede9	540	* Arguments : Pointer to TD structure
belloula	0:d07617f8ede9	541	*
belloula	0:d07617f8ede9	542	* Returns : None
belloula	0:d07617f8ede9	543	*
belloula	0:d07617f8ede9	544	**************************************************************************************************************
belloula	0:d07617f8ede9	545	*/
belloula	0:d07617f8ede9	546
belloula	0:d07617f8ede9	547	void Host_TDInit (volatile HCTD *td)
belloula	0:d07617f8ede9	548	{
belloula	0:d07617f8ede9	549
belloula	0:d07617f8ede9	550	td->Control = 0;
belloula	0:d07617f8ede9	551	td->CurrBufPtr = 0;
belloula	0:d07617f8ede9	552	td->Next = 0;
belloula	0:d07617f8ede9	553	td->BufEnd = 0;
belloula	0:d07617f8ede9	554	}
belloula	0:d07617f8ede9	555
belloula	0:d07617f8ede9	556	/*
belloula	0:d07617f8ede9	557	**************************************************************************************************************
belloula	0:d07617f8ede9	558	* INITIALIZE THE ENDPOINT DESCRIPTOR
belloula	0:d07617f8ede9	559	*
belloula	0:d07617f8ede9	560	* Description: This function initializes endpoint descriptor
belloula	0:d07617f8ede9	561	*
belloula	0:d07617f8ede9	562	* Arguments : Pointer to ED strcuture
belloula	0:d07617f8ede9	563	*
belloula	0:d07617f8ede9	564	* Returns : None
belloula	0:d07617f8ede9	565	*
belloula	0:d07617f8ede9	566	**************************************************************************************************************
belloula	0:d07617f8ede9	567	*/
belloula	0:d07617f8ede9	568
belloula	0:d07617f8ede9	569	void Host_EDInit (volatile HCED *ed)
belloula	0:d07617f8ede9	570	{
belloula	0:d07617f8ede9	571
belloula	0:d07617f8ede9	572	ed->Control = 0;
belloula	0:d07617f8ede9	573	ed->TailTd = 0;
belloula	0:d07617f8ede9	574	ed->HeadTd = 0;
belloula	0:d07617f8ede9	575	ed->Next = 0;
belloula	0:d07617f8ede9	576	}
belloula	0:d07617f8ede9	577
belloula	0:d07617f8ede9	578	/*
belloula	0:d07617f8ede9	579	**************************************************************************************************************
belloula	0:d07617f8ede9	580	* INITIALIZE HOST CONTROLLER COMMUNICATIONS AREA
belloula	0:d07617f8ede9	581	*
belloula	0:d07617f8ede9	582	* Description: This function initializes host controller communications area
belloula	0:d07617f8ede9	583	*
belloula	0:d07617f8ede9	584	* Arguments : Pointer to HCCA
belloula	0:d07617f8ede9	585	*
belloula	0:d07617f8ede9	586	* Returns :
belloula	0:d07617f8ede9	587	*
belloula	0:d07617f8ede9	588	**************************************************************************************************************
belloula	0:d07617f8ede9	589	*/
belloula	0:d07617f8ede9	590
belloula	0:d07617f8ede9	591	void Host_HCCAInit (volatile HCCA *hcca)
belloula	0:d07617f8ede9	592	{
belloula	0:d07617f8ede9	593	USB_INT32U i;
belloula	0:d07617f8ede9	594
belloula	0:d07617f8ede9	595
belloula	0:d07617f8ede9	596	for (i = 0; i < 32; i++) {
belloula	0:d07617f8ede9	597
belloula	0:d07617f8ede9	598	hcca->IntTable[i] = 0;
belloula	0:d07617f8ede9	599	hcca->FrameNumber = 0;
belloula	0:d07617f8ede9	600	hcca->DoneHead = 0;
belloula	0:d07617f8ede9	601	}
belloula	0:d07617f8ede9	602
belloula	0:d07617f8ede9	603	}
belloula	0:d07617f8ede9	604
belloula	0:d07617f8ede9	605	/*
belloula	0:d07617f8ede9	606	**************************************************************************************************************
belloula	0:d07617f8ede9	607	* WAIT FOR WDH INTERRUPT
belloula	0:d07617f8ede9	608	*
belloula	0:d07617f8ede9	609	* Description: This function is infinite loop which breaks when ever a WDH interrupt rises
belloula	0:d07617f8ede9	610	*
belloula	0:d07617f8ede9	611	* Arguments : None
belloula	0:d07617f8ede9	612	*
belloula	0:d07617f8ede9	613	* Returns : None
belloula	0:d07617f8ede9	614	*
belloula	0:d07617f8ede9	615	**************************************************************************************************************
belloula	0:d07617f8ede9	616	*/
belloula	0:d07617f8ede9	617
belloula	0:d07617f8ede9	618	void Host_WDHWait (void)
belloula	0:d07617f8ede9	619	{
belloula	0:d07617f8ede9	620	while (!HOST_WdhIntr)
belloula	0:d07617f8ede9	621	__WFI();
belloula	0:d07617f8ede9	622
belloula	0:d07617f8ede9	623	HOST_WdhIntr = 0;
belloula	0:d07617f8ede9	624	}
belloula	0:d07617f8ede9	625
belloula	0:d07617f8ede9	626	/*
belloula	0:d07617f8ede9	627	**************************************************************************************************************
belloula	0:d07617f8ede9	628	* READ LE 32U
belloula	0:d07617f8ede9	629	*
belloula	0:d07617f8ede9	630	* Description: This function is used to read an unsigned integer from a character buffer in the platform
belloula	0:d07617f8ede9	631	* containing little endian processor
belloula	0:d07617f8ede9	632	*
belloula	0:d07617f8ede9	633	* Arguments : pmem Pointer to the character buffer
belloula	0:d07617f8ede9	634	*
belloula	0:d07617f8ede9	635	* Returns : val Unsigned integer
belloula	0:d07617f8ede9	636	*
belloula	0:d07617f8ede9	637	**************************************************************************************************************
belloula	0:d07617f8ede9	638	*/
belloula	0:d07617f8ede9	639
belloula	0:d07617f8ede9	640	USB_INT32U ReadLE32U (volatile USB_INT08U *pmem)
belloula	0:d07617f8ede9	641	{
belloula	0:d07617f8ede9	642	USB_INT32U val = (USB_INT32U)pmem;
belloula	0:d07617f8ede9	643	#ifdef __BIG_ENDIAN
belloula	0:d07617f8ede9	644	return __REV(val);
belloula	0:d07617f8ede9	645	#else
belloula	0:d07617f8ede9	646	return val;
belloula	0:d07617f8ede9	647	#endif
belloula	0:d07617f8ede9	648	}
belloula	0:d07617f8ede9	649
belloula	0:d07617f8ede9	650	/*
belloula	0:d07617f8ede9	651	**************************************************************************************************************
belloula	0:d07617f8ede9	652	* WRITE LE 32U
belloula	0:d07617f8ede9	653	*
belloula	0:d07617f8ede9	654	* Description: This function is used to write an unsigned integer into a charecter buffer in the platform
belloula	0:d07617f8ede9	655	* containing little endian processor.
belloula	0:d07617f8ede9	656	*
belloula	0:d07617f8ede9	657	* Arguments : pmem Pointer to the charecter buffer
belloula	0:d07617f8ede9	658	* val Integer value to be placed in the charecter buffer
belloula	0:d07617f8ede9	659	*
belloula	0:d07617f8ede9	660	* Returns : None
belloula	0:d07617f8ede9	661	*
belloula	0:d07617f8ede9	662	**************************************************************************************************************
belloula	0:d07617f8ede9	663	*/
belloula	0:d07617f8ede9	664
belloula	0:d07617f8ede9	665	void WriteLE32U (volatile USB_INT08U *pmem,
belloula	0:d07617f8ede9	666	USB_INT32U val)
belloula	0:d07617f8ede9	667	{
belloula	0:d07617f8ede9	668	#ifdef __BIG_ENDIAN
belloula	0:d07617f8ede9	669	(USB_INT32U)pmem = __REV(val);
belloula	0:d07617f8ede9	670	#else
belloula	0:d07617f8ede9	671	(USB_INT32U)pmem = val;
belloula	0:d07617f8ede9	672	#endif
belloula	0:d07617f8ede9	673	}
belloula	0:d07617f8ede9	674
belloula	0:d07617f8ede9	675	/*
belloula	0:d07617f8ede9	676	**************************************************************************************************************
belloula	0:d07617f8ede9	677	* READ LE 16U
belloula	0:d07617f8ede9	678	*
belloula	0:d07617f8ede9	679	* Description: This function is used to read an unsigned short integer from a charecter buffer in the platform
belloula	0:d07617f8ede9	680	* containing little endian processor
belloula	0:d07617f8ede9	681	*
belloula	0:d07617f8ede9	682	* Arguments : pmem Pointer to the charecter buffer
belloula	0:d07617f8ede9	683	*
belloula	0:d07617f8ede9	684	* Returns : val Unsigned short integer
belloula	0:d07617f8ede9	685	*
belloula	0:d07617f8ede9	686	**************************************************************************************************************
belloula	0:d07617f8ede9	687	*/
belloula	0:d07617f8ede9	688
belloula	0:d07617f8ede9	689	USB_INT16U ReadLE16U (volatile USB_INT08U *pmem)
belloula	0:d07617f8ede9	690	{
belloula	0:d07617f8ede9	691	USB_INT16U val = (USB_INT16U)pmem;
belloula	0:d07617f8ede9	692	#ifdef __BIG_ENDIAN
belloula	0:d07617f8ede9	693	return __REV16(val);
belloula	0:d07617f8ede9	694	#else
belloula	0:d07617f8ede9	695	return val;
belloula	0:d07617f8ede9	696	#endif
belloula	0:d07617f8ede9	697	}
belloula	0:d07617f8ede9	698
belloula	0:d07617f8ede9	699	/*
belloula	0:d07617f8ede9	700	**************************************************************************************************************
belloula	0:d07617f8ede9	701	* WRITE LE 16U
belloula	0:d07617f8ede9	702	*
belloula	0:d07617f8ede9	703	* Description: This function is used to write an unsigned short integer into a charecter buffer in the
belloula	0:d07617f8ede9	704	* platform containing little endian processor
belloula	0:d07617f8ede9	705	*
belloula	0:d07617f8ede9	706	* Arguments : pmem Pointer to the charecter buffer
belloula	0:d07617f8ede9	707	* val Value to be placed in the charecter buffer
belloula	0:d07617f8ede9	708	*
belloula	0:d07617f8ede9	709	* Returns : None
belloula	0:d07617f8ede9	710	*
belloula	0:d07617f8ede9	711	**************************************************************************************************************
belloula	0:d07617f8ede9	712	*/
belloula	0:d07617f8ede9	713
belloula	0:d07617f8ede9	714	void WriteLE16U (volatile USB_INT08U *pmem,
belloula	0:d07617f8ede9	715	USB_INT16U val)
belloula	0:d07617f8ede9	716	{
belloula	0:d07617f8ede9	717	#ifdef __BIG_ENDIAN
belloula	0:d07617f8ede9	718	(USB_INT16U)pmem = (__REV16(val) & 0xFFFF);
belloula	0:d07617f8ede9	719	#else
belloula	0:d07617f8ede9	720	(USB_INT16U)pmem = val;
belloula	0:d07617f8ede9	721	#endif
belloula	0:d07617f8ede9	722	}
belloula	0:d07617f8ede9	723
belloula	0:d07617f8ede9	724	/*
belloula	0:d07617f8ede9	725	**************************************************************************************************************
belloula	0:d07617f8ede9	726	* READ BE 32U
belloula	0:d07617f8ede9	727	*
belloula	0:d07617f8ede9	728	* Description: This function is used to read an unsigned integer from a charecter buffer in the platform
belloula	0:d07617f8ede9	729	* containing big endian processor
belloula	0:d07617f8ede9	730	*
belloula	0:d07617f8ede9	731	* Arguments : pmem Pointer to the charecter buffer
belloula	0:d07617f8ede9	732	*
belloula	0:d07617f8ede9	733	* Returns : val Unsigned integer
belloula	0:d07617f8ede9	734	*
belloula	0:d07617f8ede9	735	**************************************************************************************************************
belloula	0:d07617f8ede9	736	*/
belloula	0:d07617f8ede9	737
belloula	0:d07617f8ede9	738	USB_INT32U ReadBE32U (volatile USB_INT08U *pmem)
belloula	0:d07617f8ede9	739	{
belloula	0:d07617f8ede9	740	USB_INT32U val = (USB_INT32U)pmem;
belloula	0:d07617f8ede9	741	#ifdef __BIG_ENDIAN
belloula	0:d07617f8ede9	742	return val;
belloula	0:d07617f8ede9	743	#else
belloula	0:d07617f8ede9	744	return __REV(val);
belloula	0:d07617f8ede9	745	#endif
belloula	0:d07617f8ede9	746	}
belloula	0:d07617f8ede9	747
belloula	0:d07617f8ede9	748	/*
belloula	0:d07617f8ede9	749	**************************************************************************************************************
belloula	0:d07617f8ede9	750	* WRITE BE 32U
belloula	0:d07617f8ede9	751	*
belloula	0:d07617f8ede9	752	* Description: This function is used to write an unsigned integer into a charecter buffer in the platform
belloula	0:d07617f8ede9	753	* containing big endian processor
belloula	0:d07617f8ede9	754	*
belloula	0:d07617f8ede9	755	* Arguments : pmem Pointer to the charecter buffer
belloula	0:d07617f8ede9	756	* val Value to be placed in the charecter buffer
belloula	0:d07617f8ede9	757	*
belloula	0:d07617f8ede9	758	* Returns : None
belloula	0:d07617f8ede9	759	*
belloula	0:d07617f8ede9	760	**************************************************************************************************************
belloula	0:d07617f8ede9	761	*/
belloula	0:d07617f8ede9	762
belloula	0:d07617f8ede9	763	void WriteBE32U (volatile USB_INT08U *pmem,
belloula	0:d07617f8ede9	764	USB_INT32U val)
belloula	0:d07617f8ede9	765	{
belloula	0:d07617f8ede9	766	#ifdef __BIG_ENDIAN
belloula	0:d07617f8ede9	767	(USB_INT32U)pmem = val;
belloula	0:d07617f8ede9	768	#else
belloula	0:d07617f8ede9	769	(USB_INT32U)pmem = __REV(val);
belloula	0:d07617f8ede9	770	#endif
belloula	0:d07617f8ede9	771	}
belloula	0:d07617f8ede9	772
belloula	0:d07617f8ede9	773	/*
belloula	0:d07617f8ede9	774	**************************************************************************************************************
belloula	0:d07617f8ede9	775	* READ BE 16U
belloula	0:d07617f8ede9	776	*
belloula	0:d07617f8ede9	777	* Description: This function is used to read an unsigned short integer from a charecter buffer in the platform
belloula	0:d07617f8ede9	778	* containing big endian processor
belloula	0:d07617f8ede9	779	*
belloula	0:d07617f8ede9	780	* Arguments : pmem Pointer to the charecter buffer
belloula	0:d07617f8ede9	781	*
belloula	0:d07617f8ede9	782	* Returns : val Unsigned short integer
belloula	0:d07617f8ede9	783	*
belloula	0:d07617f8ede9	784	**************************************************************************************************************
belloula	0:d07617f8ede9	785	*/
belloula	0:d07617f8ede9	786
belloula	0:d07617f8ede9	787	USB_INT16U ReadBE16U (volatile USB_INT08U *pmem)
belloula	0:d07617f8ede9	788	{
belloula	0:d07617f8ede9	789	USB_INT16U val = (USB_INT16U)pmem;
belloula	0:d07617f8ede9	790	#ifdef __BIG_ENDIAN
belloula	0:d07617f8ede9	791	return val;
belloula	0:d07617f8ede9	792	#else
belloula	0:d07617f8ede9	793	return __REV16(val);
belloula	0:d07617f8ede9	794	#endif
belloula	0:d07617f8ede9	795	}
belloula	0:d07617f8ede9	796
belloula	0:d07617f8ede9	797	/*
belloula	0:d07617f8ede9	798	**************************************************************************************************************
belloula	0:d07617f8ede9	799	* WRITE BE 16U
belloula	0:d07617f8ede9	800	*
belloula	0:d07617f8ede9	801	* Description: This function is used to write an unsigned short integer into the charecter buffer in the
belloula	0:d07617f8ede9	802	* platform containing big endian processor
belloula	0:d07617f8ede9	803	*
belloula	0:d07617f8ede9	804	* Arguments : pmem Pointer to the charecter buffer
belloula	0:d07617f8ede9	805	* val Value to be placed in the charecter buffer
belloula	0:d07617f8ede9	806	*
belloula	0:d07617f8ede9	807	* Returns : None
belloula	0:d07617f8ede9	808	*
belloula	0:d07617f8ede9	809	**************************************************************************************************************
belloula	0:d07617f8ede9	810	*/
belloula	0:d07617f8ede9	811
belloula	0:d07617f8ede9	812	void WriteBE16U (volatile USB_INT08U *pmem,
belloula	0:d07617f8ede9	813	USB_INT16U val)
belloula	0:d07617f8ede9	814	{
belloula	0:d07617f8ede9	815	#ifdef __BIG_ENDIAN
belloula	0:d07617f8ede9	816	(USB_INT16U)pmem = val;
belloula	0:d07617f8ede9	817	#else
belloula	0:d07617f8ede9	818	(USB_INT16U)pmem = (__REV16(val) & 0xFFFF);
belloula	0:d07617f8ede9	819	#endif
belloula	0:d07617f8ede9	820	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	17 Oct 2011
Imports:	17
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

USBHostLite/usbhost_lpc17xx.c@0:d07617f8ede9, 2011-10-17 (annotated)

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