Jonathan Witherstone / Mbed 2 deprecated Compass

as

Dependencies:   C12832 CMPS03 FatFileSystemCpp mbed

USBHostLite/usbhost_lpc17xx.cpp@0:6cf24371ad4f, 2014-05-07 (annotated)

Committer:
JWitherstone
Date:
Wed May 07 10:15:01 2014 +0000
Revision:
0:6cf24371ad4f
this is compass;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JWitherstone 0:6cf24371ad4f 1 /*
JWitherstone 0:6cf24371ad4f 2 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 3 * NXP USB Host Stack
JWitherstone 0:6cf24371ad4f 4 *
JWitherstone 0:6cf24371ad4f 5 * (c) Copyright 2008, NXP SemiConductors
JWitherstone 0:6cf24371ad4f 6 * (c) Copyright 2008, OnChip Technologies LLC
JWitherstone 0:6cf24371ad4f 7 * All Rights Reserved
JWitherstone 0:6cf24371ad4f 8 *
JWitherstone 0:6cf24371ad4f 9 * www.nxp.com
JWitherstone 0:6cf24371ad4f 10 * www.onchiptech.com
JWitherstone 0:6cf24371ad4f 11 *
JWitherstone 0:6cf24371ad4f 12 * File : usbhost_lpc17xx.c
JWitherstone 0:6cf24371ad4f 13 * Programmer(s) : Ravikanth.P
JWitherstone 0:6cf24371ad4f 14 * Version :
JWitherstone 0:6cf24371ad4f 15 *
JWitherstone 0:6cf24371ad4f 16 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 17 */
JWitherstone 0:6cf24371ad4f 18
JWitherstone 0:6cf24371ad4f 19 /*
JWitherstone 0:6cf24371ad4f 20 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 21 * INCLUDE HEADER FILES
JWitherstone 0:6cf24371ad4f 22 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 23 */
JWitherstone 0:6cf24371ad4f 24
JWitherstone 0:6cf24371ad4f 25 #include "usbhost_lpc17xx.h"
JWitherstone 0:6cf24371ad4f 26
JWitherstone 0:6cf24371ad4f 27 /*
JWitherstone 0:6cf24371ad4f 28 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 29 * GLOBAL VARIABLES
JWitherstone 0:6cf24371ad4f 30 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 31 */
JWitherstone 0:6cf24371ad4f 32 int gUSBConnected;
JWitherstone 0:6cf24371ad4f 33
JWitherstone 0:6cf24371ad4f 34 volatile USB_INT32U HOST_RhscIntr = 0; /* Root Hub Status Change interrupt */
JWitherstone 0:6cf24371ad4f 35 volatile USB_INT32U HOST_WdhIntr = 0; /* Semaphore to wait until the TD is submitted */
JWitherstone 0:6cf24371ad4f 36 volatile USB_INT08U HOST_TDControlStatus = 0;
JWitherstone 0:6cf24371ad4f 37 volatile HCED *EDCtrl; /* Control endpoint descriptor structure */
JWitherstone 0:6cf24371ad4f 38 volatile HCED *EDBulkIn; /* BulkIn endpoint descriptor structure */
JWitherstone 0:6cf24371ad4f 39 volatile HCED *EDBulkOut; /* BulkOut endpoint descriptor structure */
JWitherstone 0:6cf24371ad4f 40 volatile HCTD *TDHead; /* Head transfer descriptor structure */
JWitherstone 0:6cf24371ad4f 41 volatile HCTD *TDTail; /* Tail transfer descriptor structure */
JWitherstone 0:6cf24371ad4f 42 volatile HCCA *Hcca; /* Host Controller Communications Area structure */
JWitherstone 0:6cf24371ad4f 43 USB_INT16U *TDBufNonVol; /* Identical to TDBuffer just to reduce compiler warnings */
JWitherstone 0:6cf24371ad4f 44 volatile USB_INT08U *TDBuffer; /* Current Buffer Pointer of transfer descriptor */
JWitherstone 0:6cf24371ad4f 45
JWitherstone 0:6cf24371ad4f 46 // USB host structures
JWitherstone 0:6cf24371ad4f 47 // AHB SRAM block 1
JWitherstone 0:6cf24371ad4f 48 #define HOSTBASEADDR 0x2007C000
JWitherstone 0:6cf24371ad4f 49 // reserve memory for the linker
JWitherstone 0:6cf24371ad4f 50 static USB_INT08U HostBuf[0x200] __attribute__((at(HOSTBASEADDR)));
JWitherstone 0:6cf24371ad4f 51 /*
JWitherstone 0:6cf24371ad4f 52 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 53 * DELAY IN MILLI SECONDS
JWitherstone 0:6cf24371ad4f 54 *
JWitherstone 0:6cf24371ad4f 55 * Description: This function provides a delay in milli seconds
JWitherstone 0:6cf24371ad4f 56 *
JWitherstone 0:6cf24371ad4f 57 * Arguments : delay The delay required
JWitherstone 0:6cf24371ad4f 58 *
JWitherstone 0:6cf24371ad4f 59 * Returns : None
JWitherstone 0:6cf24371ad4f 60 *
JWitherstone 0:6cf24371ad4f 61 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 62 */
JWitherstone 0:6cf24371ad4f 63
JWitherstone 0:6cf24371ad4f 64 void Host_DelayMS (USB_INT32U delay)
JWitherstone 0:6cf24371ad4f 65 {
JWitherstone 0:6cf24371ad4f 66 volatile USB_INT32U i;
JWitherstone 0:6cf24371ad4f 67
JWitherstone 0:6cf24371ad4f 68
JWitherstone 0:6cf24371ad4f 69 for (i = 0; i < delay; i++) {
JWitherstone 0:6cf24371ad4f 70 Host_DelayUS(1000);
JWitherstone 0:6cf24371ad4f 71 }
JWitherstone 0:6cf24371ad4f 72 }
JWitherstone 0:6cf24371ad4f 73
JWitherstone 0:6cf24371ad4f 74 /*
JWitherstone 0:6cf24371ad4f 75 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 76 * DELAY IN MICRO SECONDS
JWitherstone 0:6cf24371ad4f 77 *
JWitherstone 0:6cf24371ad4f 78 * Description: This function provides a delay in micro seconds
JWitherstone 0:6cf24371ad4f 79 *
JWitherstone 0:6cf24371ad4f 80 * Arguments : delay The delay required
JWitherstone 0:6cf24371ad4f 81 *
JWitherstone 0:6cf24371ad4f 82 * Returns : None
JWitherstone 0:6cf24371ad4f 83 *
JWitherstone 0:6cf24371ad4f 84 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 85 */
JWitherstone 0:6cf24371ad4f 86
JWitherstone 0:6cf24371ad4f 87 void Host_DelayUS (USB_INT32U delay)
JWitherstone 0:6cf24371ad4f 88 {
JWitherstone 0:6cf24371ad4f 89 volatile USB_INT32U i;
JWitherstone 0:6cf24371ad4f 90
JWitherstone 0:6cf24371ad4f 91
JWitherstone 0:6cf24371ad4f 92 for (i = 0; i < (4 * delay); i++) { /* This logic was tested. It gives app. 1 micro sec delay */
JWitherstone 0:6cf24371ad4f 93 ;
JWitherstone 0:6cf24371ad4f 94 }
JWitherstone 0:6cf24371ad4f 95 }
JWitherstone 0:6cf24371ad4f 96
JWitherstone 0:6cf24371ad4f 97 // bits of the USB/OTG clock control register
JWitherstone 0:6cf24371ad4f 98 #define HOST_CLK_EN (1<<0)
JWitherstone 0:6cf24371ad4f 99 #define DEV_CLK_EN (1<<1)
JWitherstone 0:6cf24371ad4f 100 #define PORTSEL_CLK_EN (1<<3)
JWitherstone 0:6cf24371ad4f 101 #define AHB_CLK_EN (1<<4)
JWitherstone 0:6cf24371ad4f 102
JWitherstone 0:6cf24371ad4f 103 // bits of the USB/OTG clock status register
JWitherstone 0:6cf24371ad4f 104 #define HOST_CLK_ON (1<<0)
JWitherstone 0:6cf24371ad4f 105 #define DEV_CLK_ON (1<<1)
JWitherstone 0:6cf24371ad4f 106 #define PORTSEL_CLK_ON (1<<3)
JWitherstone 0:6cf24371ad4f 107 #define AHB_CLK_ON (1<<4)
JWitherstone 0:6cf24371ad4f 108
JWitherstone 0:6cf24371ad4f 109 // we need host clock, OTG/portsel clock and AHB clock
JWitherstone 0:6cf24371ad4f 110 #define CLOCK_MASK (HOST_CLK_EN | PORTSEL_CLK_EN | AHB_CLK_EN)
JWitherstone 0:6cf24371ad4f 111
JWitherstone 0:6cf24371ad4f 112 /*
JWitherstone 0:6cf24371ad4f 113 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 114 * INITIALIZE THE HOST CONTROLLER
JWitherstone 0:6cf24371ad4f 115 *
JWitherstone 0:6cf24371ad4f 116 * Description: This function initializes lpc17xx host controller
JWitherstone 0:6cf24371ad4f 117 *
JWitherstone 0:6cf24371ad4f 118 * Arguments : None
JWitherstone 0:6cf24371ad4f 119 *
JWitherstone 0:6cf24371ad4f 120 * Returns :
JWitherstone 0:6cf24371ad4f 121 *
JWitherstone 0:6cf24371ad4f 122 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 123 */
JWitherstone 0:6cf24371ad4f 124 void Host_Init (void)
JWitherstone 0:6cf24371ad4f 125 {
JWitherstone 0:6cf24371ad4f 126 PRINT_Log("In Host_Init\n");
JWitherstone 0:6cf24371ad4f 127 NVIC_DisableIRQ(USB_IRQn); /* Disable the USB interrupt source */
JWitherstone 0:6cf24371ad4f 128
JWitherstone 0:6cf24371ad4f 129 // turn on power for USB
JWitherstone 0:6cf24371ad4f 130 LPC_SC->PCONP |= (1UL<<31);
JWitherstone 0:6cf24371ad4f 131 // Enable USB host clock, port selection and AHB clock
JWitherstone 0:6cf24371ad4f 132 LPC_USB->USBClkCtrl |= CLOCK_MASK;
JWitherstone 0:6cf24371ad4f 133 // Wait for clocks to become available
JWitherstone 0:6cf24371ad4f 134 while ((LPC_USB->USBClkSt & CLOCK_MASK) != CLOCK_MASK)
JWitherstone 0:6cf24371ad4f 135 ;
JWitherstone 0:6cf24371ad4f 136
JWitherstone 0:6cf24371ad4f 137 // it seems the bits[0:1] mean the following
JWitherstone 0:6cf24371ad4f 138 // 0: U1=device, U2=host
JWitherstone 0:6cf24371ad4f 139 // 1: U1=host, U2=host
JWitherstone 0:6cf24371ad4f 140 // 2: reserved
JWitherstone 0:6cf24371ad4f 141 // 3: U1=host, U2=device
JWitherstone 0:6cf24371ad4f 142 // NB: this register is only available if OTG clock (aka "port select") is enabled!!
JWitherstone 0:6cf24371ad4f 143 // since we don't care about port 2, set just bit 0 to 1 (U1=host)
JWitherstone 0:6cf24371ad4f 144 LPC_USB->OTGStCtrl |= 1;
JWitherstone 0:6cf24371ad4f 145
JWitherstone 0:6cf24371ad4f 146 // now that we've configured the ports, we can turn off the portsel clock
JWitherstone 0:6cf24371ad4f 147 LPC_USB->USBClkCtrl &= ~PORTSEL_CLK_EN;
JWitherstone 0:6cf24371ad4f 148
JWitherstone 0:6cf24371ad4f 149 // power pins are not connected on mbed, so we can skip them
JWitherstone 0:6cf24371ad4f 150 /* P1[18] = USB_UP_LED, 01 */
JWitherstone 0:6cf24371ad4f 151 /* P1[19] = /USB_PPWR, 10 */
JWitherstone 0:6cf24371ad4f 152 /* P1[22] = USB_PWRD, 10 */
JWitherstone 0:6cf24371ad4f 153 /* P1[27] = /USB_OVRCR, 10 */
JWitherstone 0:6cf24371ad4f 154 /*LPC_PINCON->PINSEL3 &= ~((3<<4) | (3<<6) | (3<<12) | (3<<22));
JWitherstone 0:6cf24371ad4f 155 LPC_PINCON->PINSEL3 |= ((1<<4)|(2<<6) | (2<<12) | (2<<22)); // 0x00802080
JWitherstone 0:6cf24371ad4f 156 */
JWitherstone 0:6cf24371ad4f 157
JWitherstone 0:6cf24371ad4f 158 // configure USB D+/D- pins
JWitherstone 0:6cf24371ad4f 159 /* P0[29] = USB_D+, 01 */
JWitherstone 0:6cf24371ad4f 160 /* P0[30] = USB_D-, 01 */
JWitherstone 0:6cf24371ad4f 161 LPC_PINCON->PINSEL1 &= ~((3<<26) | (3<<28));
JWitherstone 0:6cf24371ad4f 162 LPC_PINCON->PINSEL1 |= ((1<<26)|(1<<28)); // 0x14000000
JWitherstone 0:6cf24371ad4f 163
JWitherstone 0:6cf24371ad4f 164 PRINT_Log("Initializing Host Stack\n");
JWitherstone 0:6cf24371ad4f 165
JWitherstone 0:6cf24371ad4f 166 Hcca = (volatile HCCA *)(HostBuf+0x000);
JWitherstone 0:6cf24371ad4f 167 TDHead = (volatile HCTD *)(HostBuf+0x100);
JWitherstone 0:6cf24371ad4f 168 TDTail = (volatile HCTD *)(HostBuf+0x110);
JWitherstone 0:6cf24371ad4f 169 EDCtrl = (volatile HCED *)(HostBuf+0x120);
JWitherstone 0:6cf24371ad4f 170 EDBulkIn = (volatile HCED *)(HostBuf+0x130);
JWitherstone 0:6cf24371ad4f 171 EDBulkOut = (volatile HCED *)(HostBuf+0x140);
JWitherstone 0:6cf24371ad4f 172 TDBuffer = (volatile USB_INT08U *)(HostBuf+0x150);
JWitherstone 0:6cf24371ad4f 173
JWitherstone 0:6cf24371ad4f 174 /* Initialize all the TDs, EDs and HCCA to 0 */
JWitherstone 0:6cf24371ad4f 175 Host_EDInit(EDCtrl);
JWitherstone 0:6cf24371ad4f 176 Host_EDInit(EDBulkIn);
JWitherstone 0:6cf24371ad4f 177 Host_EDInit(EDBulkOut);
JWitherstone 0:6cf24371ad4f 178 Host_TDInit(TDHead);
JWitherstone 0:6cf24371ad4f 179 Host_TDInit(TDTail);
JWitherstone 0:6cf24371ad4f 180 Host_HCCAInit(Hcca);
JWitherstone 0:6cf24371ad4f 181
JWitherstone 0:6cf24371ad4f 182 Host_DelayMS(50); /* Wait 50 ms before apply reset */
JWitherstone 0:6cf24371ad4f 183 LPC_USB->HcControl = 0; /* HARDWARE RESET */
JWitherstone 0:6cf24371ad4f 184 LPC_USB->HcControlHeadED = 0; /* Initialize Control list head to Zero */
JWitherstone 0:6cf24371ad4f 185 LPC_USB->HcBulkHeadED = 0; /* Initialize Bulk list head to Zero */
JWitherstone 0:6cf24371ad4f 186
JWitherstone 0:6cf24371ad4f 187 /* SOFTWARE RESET */
JWitherstone 0:6cf24371ad4f 188 LPC_USB->HcCommandStatus = OR_CMD_STATUS_HCR;
JWitherstone 0:6cf24371ad4f 189 LPC_USB->HcFmInterval = DEFAULT_FMINTERVAL; /* Write Fm Interval and Largest Data Packet Counter */
JWitherstone 0:6cf24371ad4f 190
JWitherstone 0:6cf24371ad4f 191 /* Put HC in operational state */
JWitherstone 0:6cf24371ad4f 192 LPC_USB->HcControl = (LPC_USB->HcControl & (~OR_CONTROL_HCFS)) | OR_CONTROL_HC_OPER;
JWitherstone 0:6cf24371ad4f 193 LPC_USB->HcRhStatus = OR_RH_STATUS_LPSC; /* Set Global Power */
JWitherstone 0:6cf24371ad4f 194
JWitherstone 0:6cf24371ad4f 195 LPC_USB->HcHCCA = (USB_INT32U)Hcca;
JWitherstone 0:6cf24371ad4f 196 LPC_USB->HcInterruptStatus |= LPC_USB->HcInterruptStatus; /* Clear Interrrupt Status */
JWitherstone 0:6cf24371ad4f 197
JWitherstone 0:6cf24371ad4f 198
JWitherstone 0:6cf24371ad4f 199 LPC_USB->HcInterruptEnable = OR_INTR_ENABLE_MIE |
JWitherstone 0:6cf24371ad4f 200 OR_INTR_ENABLE_WDH |
JWitherstone 0:6cf24371ad4f 201 OR_INTR_ENABLE_RHSC;
JWitherstone 0:6cf24371ad4f 202
JWitherstone 0:6cf24371ad4f 203 NVIC_SetPriority(USB_IRQn, 0); /* highest priority */
JWitherstone 0:6cf24371ad4f 204 /* Enable the USB Interrupt */
JWitherstone 0:6cf24371ad4f 205 NVIC_EnableIRQ(USB_IRQn);
JWitherstone 0:6cf24371ad4f 206 PRINT_Log("Host Initialized\n");
JWitherstone 0:6cf24371ad4f 207 }
JWitherstone 0:6cf24371ad4f 208
JWitherstone 0:6cf24371ad4f 209 /*
JWitherstone 0:6cf24371ad4f 210 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 211 * INTERRUPT SERVICE ROUTINE
JWitherstone 0:6cf24371ad4f 212 *
JWitherstone 0:6cf24371ad4f 213 * Description: This function services the interrupt caused by host controller
JWitherstone 0:6cf24371ad4f 214 *
JWitherstone 0:6cf24371ad4f 215 * Arguments : None
JWitherstone 0:6cf24371ad4f 216 *
JWitherstone 0:6cf24371ad4f 217 * Returns : None
JWitherstone 0:6cf24371ad4f 218 *
JWitherstone 0:6cf24371ad4f 219 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 220 */
JWitherstone 0:6cf24371ad4f 221
JWitherstone 0:6cf24371ad4f 222 void USB_IRQHandler (void) __irq
JWitherstone 0:6cf24371ad4f 223 {
JWitherstone 0:6cf24371ad4f 224 USB_INT32U int_status;
JWitherstone 0:6cf24371ad4f 225 USB_INT32U ie_status;
JWitherstone 0:6cf24371ad4f 226
JWitherstone 0:6cf24371ad4f 227 int_status = LPC_USB->HcInterruptStatus; /* Read Interrupt Status */
JWitherstone 0:6cf24371ad4f 228 ie_status = LPC_USB->HcInterruptEnable; /* Read Interrupt enable status */
JWitherstone 0:6cf24371ad4f 229
JWitherstone 0:6cf24371ad4f 230 if (!(int_status & ie_status)) {
JWitherstone 0:6cf24371ad4f 231 return;
JWitherstone 0:6cf24371ad4f 232 } else {
JWitherstone 0:6cf24371ad4f 233
JWitherstone 0:6cf24371ad4f 234 int_status = int_status & ie_status;
JWitherstone 0:6cf24371ad4f 235 if (int_status & OR_INTR_STATUS_RHSC) { /* Root hub status change interrupt */
JWitherstone 0:6cf24371ad4f 236 if (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_CSC) {
JWitherstone 0:6cf24371ad4f 237 if (LPC_USB->HcRhStatus & OR_RH_STATUS_DRWE) {
JWitherstone 0:6cf24371ad4f 238 /*
JWitherstone 0:6cf24371ad4f 239 * When DRWE is on, Connect Status Change
JWitherstone 0:6cf24371ad4f 240 * means a remote wakeup event.
JWitherstone 0:6cf24371ad4f 241 */
JWitherstone 0:6cf24371ad4f 242 HOST_RhscIntr = 1;// JUST SOMETHING FOR A BREAKPOINT
JWitherstone 0:6cf24371ad4f 243 }
JWitherstone 0:6cf24371ad4f 244 else {
JWitherstone 0:6cf24371ad4f 245 /*
JWitherstone 0:6cf24371ad4f 246 * When DRWE is off, Connect Status Change
JWitherstone 0:6cf24371ad4f 247 * is NOT a remote wakeup event
JWitherstone 0:6cf24371ad4f 248 */
JWitherstone 0:6cf24371ad4f 249 if (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_CCS) {
JWitherstone 0:6cf24371ad4f 250 if (!gUSBConnected) {
JWitherstone 0:6cf24371ad4f 251 HOST_TDControlStatus = 0;
JWitherstone 0:6cf24371ad4f 252 HOST_WdhIntr = 0;
JWitherstone 0:6cf24371ad4f 253 HOST_RhscIntr = 1;
JWitherstone 0:6cf24371ad4f 254 gUSBConnected = 1;
JWitherstone 0:6cf24371ad4f 255 }
JWitherstone 0:6cf24371ad4f 256 else
JWitherstone 0:6cf24371ad4f 257 PRINT_Log("Spurious status change (connected)?\n");
JWitherstone 0:6cf24371ad4f 258 } else {
JWitherstone 0:6cf24371ad4f 259 if (gUSBConnected) {
JWitherstone 0:6cf24371ad4f 260 LPC_USB->HcInterruptEnable = 0; // why do we get multiple disc. rupts???
JWitherstone 0:6cf24371ad4f 261 HOST_RhscIntr = 0;
JWitherstone 0:6cf24371ad4f 262 gUSBConnected = 0;
JWitherstone 0:6cf24371ad4f 263 }
JWitherstone 0:6cf24371ad4f 264 else
JWitherstone 0:6cf24371ad4f 265 PRINT_Log("Spurious status change (disconnected)?\n");
JWitherstone 0:6cf24371ad4f 266 }
JWitherstone 0:6cf24371ad4f 267 }
JWitherstone 0:6cf24371ad4f 268 LPC_USB->HcRhPortStatus1 = OR_RH_PORT_CSC;
JWitherstone 0:6cf24371ad4f 269 }
JWitherstone 0:6cf24371ad4f 270 if (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_PRSC) {
JWitherstone 0:6cf24371ad4f 271 LPC_USB->HcRhPortStatus1 = OR_RH_PORT_PRSC;
JWitherstone 0:6cf24371ad4f 272 }
JWitherstone 0:6cf24371ad4f 273 }
JWitherstone 0:6cf24371ad4f 274 if (int_status & OR_INTR_STATUS_WDH) { /* Writeback Done Head interrupt */
JWitherstone 0:6cf24371ad4f 275 HOST_WdhIntr = 1;
JWitherstone 0:6cf24371ad4f 276 HOST_TDControlStatus = (TDHead->Control >> 28) & 0xf;
JWitherstone 0:6cf24371ad4f 277 }
JWitherstone 0:6cf24371ad4f 278 LPC_USB->HcInterruptStatus = int_status; /* Clear interrupt status register */
JWitherstone 0:6cf24371ad4f 279 }
JWitherstone 0:6cf24371ad4f 280 return;
JWitherstone 0:6cf24371ad4f 281 }
JWitherstone 0:6cf24371ad4f 282
JWitherstone 0:6cf24371ad4f 283 /*
JWitherstone 0:6cf24371ad4f 284 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 285 * PROCESS TRANSFER DESCRIPTOR
JWitherstone 0:6cf24371ad4f 286 *
JWitherstone 0:6cf24371ad4f 287 * Description: This function processes the transfer descriptor
JWitherstone 0:6cf24371ad4f 288 *
JWitherstone 0:6cf24371ad4f 289 * Arguments : ed Endpoint descriptor that contains this transfer descriptor
JWitherstone 0:6cf24371ad4f 290 * token SETUP, IN, OUT
JWitherstone 0:6cf24371ad4f 291 * buffer Current Buffer Pointer of the transfer descriptor
JWitherstone 0:6cf24371ad4f 292 * buffer_len Length of the buffer
JWitherstone 0:6cf24371ad4f 293 *
JWitherstone 0:6cf24371ad4f 294 * Returns : OK if TD submission is successful
JWitherstone 0:6cf24371ad4f 295 * ERROR if TD submission fails
JWitherstone 0:6cf24371ad4f 296 *
JWitherstone 0:6cf24371ad4f 297 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 298 */
JWitherstone 0:6cf24371ad4f 299
JWitherstone 0:6cf24371ad4f 300 USB_INT32S Host_ProcessTD (volatile HCED *ed,
JWitherstone 0:6cf24371ad4f 301 volatile USB_INT32U token,
JWitherstone 0:6cf24371ad4f 302 volatile USB_INT08U *buffer,
JWitherstone 0:6cf24371ad4f 303 USB_INT32U buffer_len)
JWitherstone 0:6cf24371ad4f 304 {
JWitherstone 0:6cf24371ad4f 305 volatile USB_INT32U td_toggle;
JWitherstone 0:6cf24371ad4f 306
JWitherstone 0:6cf24371ad4f 307
JWitherstone 0:6cf24371ad4f 308 if (ed == EDCtrl) {
JWitherstone 0:6cf24371ad4f 309 if (token == TD_SETUP) {
JWitherstone 0:6cf24371ad4f 310 td_toggle = TD_TOGGLE_0;
JWitherstone 0:6cf24371ad4f 311 } else {
JWitherstone 0:6cf24371ad4f 312 td_toggle = TD_TOGGLE_1;
JWitherstone 0:6cf24371ad4f 313 }
JWitherstone 0:6cf24371ad4f 314 } else {
JWitherstone 0:6cf24371ad4f 315 td_toggle = 0;
JWitherstone 0:6cf24371ad4f 316 }
JWitherstone 0:6cf24371ad4f 317 TDHead->Control = (TD_ROUNDING |
JWitherstone 0:6cf24371ad4f 318 token |
JWitherstone 0:6cf24371ad4f 319 TD_DELAY_INT(0) |
JWitherstone 0:6cf24371ad4f 320 td_toggle |
JWitherstone 0:6cf24371ad4f 321 TD_CC);
JWitherstone 0:6cf24371ad4f 322 TDTail->Control = 0;
JWitherstone 0:6cf24371ad4f 323 TDHead->CurrBufPtr = (USB_INT32U) buffer;
JWitherstone 0:6cf24371ad4f 324 TDTail->CurrBufPtr = 0;
JWitherstone 0:6cf24371ad4f 325 TDHead->Next = (USB_INT32U) TDTail;
JWitherstone 0:6cf24371ad4f 326 TDTail->Next = 0;
JWitherstone 0:6cf24371ad4f 327 TDHead->BufEnd = (USB_INT32U)(buffer + (buffer_len - 1));
JWitherstone 0:6cf24371ad4f 328 TDTail->BufEnd = 0;
JWitherstone 0:6cf24371ad4f 329
JWitherstone 0:6cf24371ad4f 330 ed->HeadTd = (USB_INT32U)TDHead | ((ed->HeadTd) & 0x00000002);
JWitherstone 0:6cf24371ad4f 331 ed->TailTd = (USB_INT32U)TDTail;
JWitherstone 0:6cf24371ad4f 332 ed->Next = 0;
JWitherstone 0:6cf24371ad4f 333
JWitherstone 0:6cf24371ad4f 334 if (ed == EDCtrl) {
JWitherstone 0:6cf24371ad4f 335 LPC_USB->HcControlHeadED = (USB_INT32U)ed;
JWitherstone 0:6cf24371ad4f 336 LPC_USB->HcCommandStatus = LPC_USB->HcCommandStatus | OR_CMD_STATUS_CLF;
JWitherstone 0:6cf24371ad4f 337 LPC_USB->HcControl = LPC_USB->HcControl | OR_CONTROL_CLE;
JWitherstone 0:6cf24371ad4f 338 } else {
JWitherstone 0:6cf24371ad4f 339 LPC_USB->HcBulkHeadED = (USB_INT32U)ed;
JWitherstone 0:6cf24371ad4f 340 LPC_USB->HcCommandStatus = LPC_USB->HcCommandStatus | OR_CMD_STATUS_BLF;
JWitherstone 0:6cf24371ad4f 341 LPC_USB->HcControl = LPC_USB->HcControl | OR_CONTROL_BLE;
JWitherstone 0:6cf24371ad4f 342 }
JWitherstone 0:6cf24371ad4f 343
JWitherstone 0:6cf24371ad4f 344 Host_WDHWait();
JWitherstone 0:6cf24371ad4f 345
JWitherstone 0:6cf24371ad4f 346 // if (!(TDHead->Control & 0xF0000000)) {
JWitherstone 0:6cf24371ad4f 347 if (!HOST_TDControlStatus) {
JWitherstone 0:6cf24371ad4f 348 return (OK);
JWitherstone 0:6cf24371ad4f 349 } else {
JWitherstone 0:6cf24371ad4f 350 return (ERR_TD_FAIL);
JWitherstone 0:6cf24371ad4f 351 }
JWitherstone 0:6cf24371ad4f 352 }
JWitherstone 0:6cf24371ad4f 353
JWitherstone 0:6cf24371ad4f 354 /*
JWitherstone 0:6cf24371ad4f 355 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 356 * ENUMERATE THE DEVICE
JWitherstone 0:6cf24371ad4f 357 *
JWitherstone 0:6cf24371ad4f 358 * Description: This function is used to enumerate the device connected
JWitherstone 0:6cf24371ad4f 359 *
JWitherstone 0:6cf24371ad4f 360 * Arguments : None
JWitherstone 0:6cf24371ad4f 361 *
JWitherstone 0:6cf24371ad4f 362 * Returns : None
JWitherstone 0:6cf24371ad4f 363 *
JWitherstone 0:6cf24371ad4f 364 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 365 */
JWitherstone 0:6cf24371ad4f 366
JWitherstone 0:6cf24371ad4f 367 USB_INT32S Host_EnumDev (void)
JWitherstone 0:6cf24371ad4f 368 {
JWitherstone 0:6cf24371ad4f 369 USB_INT32S rc;
JWitherstone 0:6cf24371ad4f 370
JWitherstone 0:6cf24371ad4f 371 PRINT_Log("Connect a Mass Storage device\n");
JWitherstone 0:6cf24371ad4f 372 while (!HOST_RhscIntr)
JWitherstone 0:6cf24371ad4f 373 __WFI();
JWitherstone 0:6cf24371ad4f 374 Host_DelayMS(100); /* USB 2.0 spec says atleast 50ms delay beore port reset */
JWitherstone 0:6cf24371ad4f 375 LPC_USB->HcRhPortStatus1 = OR_RH_PORT_PRS; // Initiate port reset
JWitherstone 0:6cf24371ad4f 376 while (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_PRS)
JWitherstone 0:6cf24371ad4f 377 __WFI(); // Wait for port reset to complete...
JWitherstone 0:6cf24371ad4f 378 LPC_USB->HcRhPortStatus1 = OR_RH_PORT_PRSC; // ...and clear port reset signal
JWitherstone 0:6cf24371ad4f 379 Host_DelayMS(200); /* Wait for 100 MS after port reset */
JWitherstone 0:6cf24371ad4f 380
JWitherstone 0:6cf24371ad4f 381 EDCtrl->Control = 8 << 16; /* Put max pkt size = 8 */
JWitherstone 0:6cf24371ad4f 382 /* Read first 8 bytes of device desc */
JWitherstone 0:6cf24371ad4f 383 rc = HOST_GET_DESCRIPTOR(USB_DESCRIPTOR_TYPE_DEVICE, 0, TDBuffer, 8);
JWitherstone 0:6cf24371ad4f 384 if (rc != OK) {
JWitherstone 0:6cf24371ad4f 385 PRINT_Err(rc);
JWitherstone 0:6cf24371ad4f 386 return (rc);
JWitherstone 0:6cf24371ad4f 387 }
JWitherstone 0:6cf24371ad4f 388 EDCtrl->Control = TDBuffer[7] << 16; /* Get max pkt size of endpoint 0 */
JWitherstone 0:6cf24371ad4f 389 rc = HOST_SET_ADDRESS(1); /* Set the device address to 1 */
JWitherstone 0:6cf24371ad4f 390 if (rc != OK) {
JWitherstone 0:6cf24371ad4f 391 PRINT_Err(rc);
JWitherstone 0:6cf24371ad4f 392 return (rc);
JWitherstone 0:6cf24371ad4f 393 }
JWitherstone 0:6cf24371ad4f 394 Host_DelayMS(2);
JWitherstone 0:6cf24371ad4f 395 EDCtrl->Control = (EDCtrl->Control) | 1; /* Modify control pipe with address 1 */
JWitherstone 0:6cf24371ad4f 396 /* Get the configuration descriptor */
JWitherstone 0:6cf24371ad4f 397 rc = HOST_GET_DESCRIPTOR(USB_DESCRIPTOR_TYPE_CONFIGURATION, 0, TDBuffer, 9);
JWitherstone 0:6cf24371ad4f 398 if (rc != OK) {
JWitherstone 0:6cf24371ad4f 399 PRINT_Err(rc);
JWitherstone 0:6cf24371ad4f 400 return (rc);
JWitherstone 0:6cf24371ad4f 401 }
JWitherstone 0:6cf24371ad4f 402 /* Get the first configuration data */
JWitherstone 0:6cf24371ad4f 403 rc = HOST_GET_DESCRIPTOR(USB_DESCRIPTOR_TYPE_CONFIGURATION, 0, TDBuffer, ReadLE16U(&TDBuffer[2]));
JWitherstone 0:6cf24371ad4f 404 if (rc != OK) {
JWitherstone 0:6cf24371ad4f 405 PRINT_Err(rc);
JWitherstone 0:6cf24371ad4f 406 return (rc);
JWitherstone 0:6cf24371ad4f 407 }
JWitherstone 0:6cf24371ad4f 408 rc = MS_ParseConfiguration(); /* Parse the configuration */
JWitherstone 0:6cf24371ad4f 409 if (rc != OK) {
JWitherstone 0:6cf24371ad4f 410 PRINT_Err(rc);
JWitherstone 0:6cf24371ad4f 411 return (rc);
JWitherstone 0:6cf24371ad4f 412 }
JWitherstone 0:6cf24371ad4f 413 rc = USBH_SET_CONFIGURATION(1); /* Select device configuration 1 */
JWitherstone 0:6cf24371ad4f 414 if (rc != OK) {
JWitherstone 0:6cf24371ad4f 415 PRINT_Err(rc);
JWitherstone 0:6cf24371ad4f 416 }
JWitherstone 0:6cf24371ad4f 417 Host_DelayMS(100); /* Some devices may require this delay */
JWitherstone 0:6cf24371ad4f 418 return (rc);
JWitherstone 0:6cf24371ad4f 419 }
JWitherstone 0:6cf24371ad4f 420
JWitherstone 0:6cf24371ad4f 421 /*
JWitherstone 0:6cf24371ad4f 422 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 423 * RECEIVE THE CONTROL INFORMATION
JWitherstone 0:6cf24371ad4f 424 *
JWitherstone 0:6cf24371ad4f 425 * Description: This function is used to receive the control information
JWitherstone 0:6cf24371ad4f 426 *
JWitherstone 0:6cf24371ad4f 427 * Arguments : bm_request_type
JWitherstone 0:6cf24371ad4f 428 * b_request
JWitherstone 0:6cf24371ad4f 429 * w_value
JWitherstone 0:6cf24371ad4f 430 * w_index
JWitherstone 0:6cf24371ad4f 431 * w_length
JWitherstone 0:6cf24371ad4f 432 * buffer
JWitherstone 0:6cf24371ad4f 433 *
JWitherstone 0:6cf24371ad4f 434 * Returns : OK if Success
JWitherstone 0:6cf24371ad4f 435 * ERROR if Failed
JWitherstone 0:6cf24371ad4f 436 *
JWitherstone 0:6cf24371ad4f 437 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 438 */
JWitherstone 0:6cf24371ad4f 439
JWitherstone 0:6cf24371ad4f 440 USB_INT32S Host_CtrlRecv ( USB_INT08U bm_request_type,
JWitherstone 0:6cf24371ad4f 441 USB_INT08U b_request,
JWitherstone 0:6cf24371ad4f 442 USB_INT16U w_value,
JWitherstone 0:6cf24371ad4f 443 USB_INT16U w_index,
JWitherstone 0:6cf24371ad4f 444 USB_INT16U w_length,
JWitherstone 0:6cf24371ad4f 445 volatile USB_INT08U *buffer)
JWitherstone 0:6cf24371ad4f 446 {
JWitherstone 0:6cf24371ad4f 447 USB_INT32S rc;
JWitherstone 0:6cf24371ad4f 448
JWitherstone 0:6cf24371ad4f 449
JWitherstone 0:6cf24371ad4f 450 Host_FillSetup(bm_request_type, b_request, w_value, w_index, w_length);
JWitherstone 0:6cf24371ad4f 451 rc = Host_ProcessTD(EDCtrl, TD_SETUP, TDBuffer, 8);
JWitherstone 0:6cf24371ad4f 452 if (rc == OK) {
JWitherstone 0:6cf24371ad4f 453 if (w_length) {
JWitherstone 0:6cf24371ad4f 454 rc = Host_ProcessTD(EDCtrl, TD_IN, TDBuffer, w_length);
JWitherstone 0:6cf24371ad4f 455 }
JWitherstone 0:6cf24371ad4f 456 if (rc == OK) {
JWitherstone 0:6cf24371ad4f 457 rc = Host_ProcessTD(EDCtrl, TD_OUT, NULL, 0);
JWitherstone 0:6cf24371ad4f 458 }
JWitherstone 0:6cf24371ad4f 459 }
JWitherstone 0:6cf24371ad4f 460 return (rc);
JWitherstone 0:6cf24371ad4f 461 }
JWitherstone 0:6cf24371ad4f 462
JWitherstone 0:6cf24371ad4f 463 /*
JWitherstone 0:6cf24371ad4f 464 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 465 * SEND THE CONTROL INFORMATION
JWitherstone 0:6cf24371ad4f 466 *
JWitherstone 0:6cf24371ad4f 467 * Description: This function is used to send the control information
JWitherstone 0:6cf24371ad4f 468 *
JWitherstone 0:6cf24371ad4f 469 * Arguments : None
JWitherstone 0:6cf24371ad4f 470 *
JWitherstone 0:6cf24371ad4f 471 * Returns : OK if Success
JWitherstone 0:6cf24371ad4f 472 * ERR_INVALID_BOOTSIG if Failed
JWitherstone 0:6cf24371ad4f 473 *
JWitherstone 0:6cf24371ad4f 474 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 475 */
JWitherstone 0:6cf24371ad4f 476
JWitherstone 0:6cf24371ad4f 477 USB_INT32S Host_CtrlSend ( USB_INT08U bm_request_type,
JWitherstone 0:6cf24371ad4f 478 USB_INT08U b_request,
JWitherstone 0:6cf24371ad4f 479 USB_INT16U w_value,
JWitherstone 0:6cf24371ad4f 480 USB_INT16U w_index,
JWitherstone 0:6cf24371ad4f 481 USB_INT16U w_length,
JWitherstone 0:6cf24371ad4f 482 volatile USB_INT08U *buffer)
JWitherstone 0:6cf24371ad4f 483 {
JWitherstone 0:6cf24371ad4f 484 USB_INT32S rc;
JWitherstone 0:6cf24371ad4f 485
JWitherstone 0:6cf24371ad4f 486
JWitherstone 0:6cf24371ad4f 487 Host_FillSetup(bm_request_type, b_request, w_value, w_index, w_length);
JWitherstone 0:6cf24371ad4f 488
JWitherstone 0:6cf24371ad4f 489 rc = Host_ProcessTD(EDCtrl, TD_SETUP, TDBuffer, 8);
JWitherstone 0:6cf24371ad4f 490 if (rc == OK) {
JWitherstone 0:6cf24371ad4f 491 if (w_length) {
JWitherstone 0:6cf24371ad4f 492 rc = Host_ProcessTD(EDCtrl, TD_OUT, TDBuffer, w_length);
JWitherstone 0:6cf24371ad4f 493 }
JWitherstone 0:6cf24371ad4f 494 if (rc == OK) {
JWitherstone 0:6cf24371ad4f 495 rc = Host_ProcessTD(EDCtrl, TD_IN, NULL, 0);
JWitherstone 0:6cf24371ad4f 496 }
JWitherstone 0:6cf24371ad4f 497 }
JWitherstone 0:6cf24371ad4f 498 return (rc);
JWitherstone 0:6cf24371ad4f 499 }
JWitherstone 0:6cf24371ad4f 500
JWitherstone 0:6cf24371ad4f 501 /*
JWitherstone 0:6cf24371ad4f 502 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 503 * FILL SETUP PACKET
JWitherstone 0:6cf24371ad4f 504 *
JWitherstone 0:6cf24371ad4f 505 * Description: This function is used to fill the setup packet
JWitherstone 0:6cf24371ad4f 506 *
JWitherstone 0:6cf24371ad4f 507 * Arguments : None
JWitherstone 0:6cf24371ad4f 508 *
JWitherstone 0:6cf24371ad4f 509 * Returns : OK if Success
JWitherstone 0:6cf24371ad4f 510 * ERR_INVALID_BOOTSIG if Failed
JWitherstone 0:6cf24371ad4f 511 *
JWitherstone 0:6cf24371ad4f 512 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 513 */
JWitherstone 0:6cf24371ad4f 514
JWitherstone 0:6cf24371ad4f 515 void Host_FillSetup (USB_INT08U bm_request_type,
JWitherstone 0:6cf24371ad4f 516 USB_INT08U b_request,
JWitherstone 0:6cf24371ad4f 517 USB_INT16U w_value,
JWitherstone 0:6cf24371ad4f 518 USB_INT16U w_index,
JWitherstone 0:6cf24371ad4f 519 USB_INT16U w_length)
JWitherstone 0:6cf24371ad4f 520 {
JWitherstone 0:6cf24371ad4f 521 int i;
JWitherstone 0:6cf24371ad4f 522 for (i=0;i<w_length;i++)
JWitherstone 0:6cf24371ad4f 523 TDBuffer[i] = 0;
JWitherstone 0:6cf24371ad4f 524
JWitherstone 0:6cf24371ad4f 525 TDBuffer[0] = bm_request_type;
JWitherstone 0:6cf24371ad4f 526 TDBuffer[1] = b_request;
JWitherstone 0:6cf24371ad4f 527 WriteLE16U(&TDBuffer[2], w_value);
JWitherstone 0:6cf24371ad4f 528 WriteLE16U(&TDBuffer[4], w_index);
JWitherstone 0:6cf24371ad4f 529 WriteLE16U(&TDBuffer[6], w_length);
JWitherstone 0:6cf24371ad4f 530 }
JWitherstone 0:6cf24371ad4f 531
JWitherstone 0:6cf24371ad4f 532
JWitherstone 0:6cf24371ad4f 533
JWitherstone 0:6cf24371ad4f 534 /*
JWitherstone 0:6cf24371ad4f 535 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 536 * INITIALIZE THE TRANSFER DESCRIPTOR
JWitherstone 0:6cf24371ad4f 537 *
JWitherstone 0:6cf24371ad4f 538 * Description: This function initializes transfer descriptor
JWitherstone 0:6cf24371ad4f 539 *
JWitherstone 0:6cf24371ad4f 540 * Arguments : Pointer to TD structure
JWitherstone 0:6cf24371ad4f 541 *
JWitherstone 0:6cf24371ad4f 542 * Returns : None
JWitherstone 0:6cf24371ad4f 543 *
JWitherstone 0:6cf24371ad4f 544 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 545 */
JWitherstone 0:6cf24371ad4f 546
JWitherstone 0:6cf24371ad4f 547 void Host_TDInit (volatile HCTD *td)
JWitherstone 0:6cf24371ad4f 548 {
JWitherstone 0:6cf24371ad4f 549
JWitherstone 0:6cf24371ad4f 550 td->Control = 0;
JWitherstone 0:6cf24371ad4f 551 td->CurrBufPtr = 0;
JWitherstone 0:6cf24371ad4f 552 td->Next = 0;
JWitherstone 0:6cf24371ad4f 553 td->BufEnd = 0;
JWitherstone 0:6cf24371ad4f 554 }
JWitherstone 0:6cf24371ad4f 555
JWitherstone 0:6cf24371ad4f 556 /*
JWitherstone 0:6cf24371ad4f 557 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 558 * INITIALIZE THE ENDPOINT DESCRIPTOR
JWitherstone 0:6cf24371ad4f 559 *
JWitherstone 0:6cf24371ad4f 560 * Description: This function initializes endpoint descriptor
JWitherstone 0:6cf24371ad4f 561 *
JWitherstone 0:6cf24371ad4f 562 * Arguments : Pointer to ED strcuture
JWitherstone 0:6cf24371ad4f 563 *
JWitherstone 0:6cf24371ad4f 564 * Returns : None
JWitherstone 0:6cf24371ad4f 565 *
JWitherstone 0:6cf24371ad4f 566 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 567 */
JWitherstone 0:6cf24371ad4f 568
JWitherstone 0:6cf24371ad4f 569 void Host_EDInit (volatile HCED *ed)
JWitherstone 0:6cf24371ad4f 570 {
JWitherstone 0:6cf24371ad4f 571
JWitherstone 0:6cf24371ad4f 572 ed->Control = 0;
JWitherstone 0:6cf24371ad4f 573 ed->TailTd = 0;
JWitherstone 0:6cf24371ad4f 574 ed->HeadTd = 0;
JWitherstone 0:6cf24371ad4f 575 ed->Next = 0;
JWitherstone 0:6cf24371ad4f 576 }
JWitherstone 0:6cf24371ad4f 577
JWitherstone 0:6cf24371ad4f 578 /*
JWitherstone 0:6cf24371ad4f 579 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 580 * INITIALIZE HOST CONTROLLER COMMUNICATIONS AREA
JWitherstone 0:6cf24371ad4f 581 *
JWitherstone 0:6cf24371ad4f 582 * Description: This function initializes host controller communications area
JWitherstone 0:6cf24371ad4f 583 *
JWitherstone 0:6cf24371ad4f 584 * Arguments : Pointer to HCCA
JWitherstone 0:6cf24371ad4f 585 *
JWitherstone 0:6cf24371ad4f 586 * Returns :
JWitherstone 0:6cf24371ad4f 587 *
JWitherstone 0:6cf24371ad4f 588 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 589 */
JWitherstone 0:6cf24371ad4f 590
JWitherstone 0:6cf24371ad4f 591 void Host_HCCAInit (volatile HCCA *hcca)
JWitherstone 0:6cf24371ad4f 592 {
JWitherstone 0:6cf24371ad4f 593 USB_INT32U i;
JWitherstone 0:6cf24371ad4f 594
JWitherstone 0:6cf24371ad4f 595
JWitherstone 0:6cf24371ad4f 596 for (i = 0; i < 32; i++) {
JWitherstone 0:6cf24371ad4f 597
JWitherstone 0:6cf24371ad4f 598 hcca->IntTable[i] = 0;
JWitherstone 0:6cf24371ad4f 599 hcca->FrameNumber = 0;
JWitherstone 0:6cf24371ad4f 600 hcca->DoneHead = 0;
JWitherstone 0:6cf24371ad4f 601 }
JWitherstone 0:6cf24371ad4f 602
JWitherstone 0:6cf24371ad4f 603 }
JWitherstone 0:6cf24371ad4f 604
JWitherstone 0:6cf24371ad4f 605 /*
JWitherstone 0:6cf24371ad4f 606 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 607 * WAIT FOR WDH INTERRUPT
JWitherstone 0:6cf24371ad4f 608 *
JWitherstone 0:6cf24371ad4f 609 * Description: This function is infinite loop which breaks when ever a WDH interrupt rises
JWitherstone 0:6cf24371ad4f 610 *
JWitherstone 0:6cf24371ad4f 611 * Arguments : None
JWitherstone 0:6cf24371ad4f 612 *
JWitherstone 0:6cf24371ad4f 613 * Returns : None
JWitherstone 0:6cf24371ad4f 614 *
JWitherstone 0:6cf24371ad4f 615 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 616 */
JWitherstone 0:6cf24371ad4f 617
JWitherstone 0:6cf24371ad4f 618 void Host_WDHWait (void)
JWitherstone 0:6cf24371ad4f 619 {
JWitherstone 0:6cf24371ad4f 620 while (!HOST_WdhIntr)
JWitherstone 0:6cf24371ad4f 621 __WFI();
JWitherstone 0:6cf24371ad4f 622
JWitherstone 0:6cf24371ad4f 623 HOST_WdhIntr = 0;
JWitherstone 0:6cf24371ad4f 624 }
JWitherstone 0:6cf24371ad4f 625
JWitherstone 0:6cf24371ad4f 626 /*
JWitherstone 0:6cf24371ad4f 627 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 628 * READ LE 32U
JWitherstone 0:6cf24371ad4f 629 *
JWitherstone 0:6cf24371ad4f 630 * Description: This function is used to read an unsigned integer from a character buffer in the platform
JWitherstone 0:6cf24371ad4f 631 * containing little endian processor
JWitherstone 0:6cf24371ad4f 632 *
JWitherstone 0:6cf24371ad4f 633 * Arguments : pmem Pointer to the character buffer
JWitherstone 0:6cf24371ad4f 634 *
JWitherstone 0:6cf24371ad4f 635 * Returns : val Unsigned integer
JWitherstone 0:6cf24371ad4f 636 *
JWitherstone 0:6cf24371ad4f 637 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 638 */
JWitherstone 0:6cf24371ad4f 639
JWitherstone 0:6cf24371ad4f 640 USB_INT32U ReadLE32U (volatile USB_INT08U *pmem)
JWitherstone 0:6cf24371ad4f 641 {
JWitherstone 0:6cf24371ad4f 642 USB_INT32U val = *(USB_INT32U*)pmem;
JWitherstone 0:6cf24371ad4f 643 #ifdef __BIG_ENDIAN
JWitherstone 0:6cf24371ad4f 644 return __REV(val);
JWitherstone 0:6cf24371ad4f 645 #else
JWitherstone 0:6cf24371ad4f 646 return val;
JWitherstone 0:6cf24371ad4f 647 #endif
JWitherstone 0:6cf24371ad4f 648 }
JWitherstone 0:6cf24371ad4f 649
JWitherstone 0:6cf24371ad4f 650 /*
JWitherstone 0:6cf24371ad4f 651 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 652 * WRITE LE 32U
JWitherstone 0:6cf24371ad4f 653 *
JWitherstone 0:6cf24371ad4f 654 * Description: This function is used to write an unsigned integer into a charecter buffer in the platform
JWitherstone 0:6cf24371ad4f 655 * containing little endian processor.
JWitherstone 0:6cf24371ad4f 656 *
JWitherstone 0:6cf24371ad4f 657 * Arguments : pmem Pointer to the charecter buffer
JWitherstone 0:6cf24371ad4f 658 * val Integer value to be placed in the charecter buffer
JWitherstone 0:6cf24371ad4f 659 *
JWitherstone 0:6cf24371ad4f 660 * Returns : None
JWitherstone 0:6cf24371ad4f 661 *
JWitherstone 0:6cf24371ad4f 662 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 663 */
JWitherstone 0:6cf24371ad4f 664
JWitherstone 0:6cf24371ad4f 665 void WriteLE32U (volatile USB_INT08U *pmem,
JWitherstone 0:6cf24371ad4f 666 USB_INT32U val)
JWitherstone 0:6cf24371ad4f 667 {
JWitherstone 0:6cf24371ad4f 668 #ifdef __BIG_ENDIAN
JWitherstone 0:6cf24371ad4f 669 *(USB_INT32U*)pmem = __REV(val);
JWitherstone 0:6cf24371ad4f 670 #else
JWitherstone 0:6cf24371ad4f 671 *(USB_INT32U*)pmem = val;
JWitherstone 0:6cf24371ad4f 672 #endif
JWitherstone 0:6cf24371ad4f 673 }
JWitherstone 0:6cf24371ad4f 674
JWitherstone 0:6cf24371ad4f 675 /*
JWitherstone 0:6cf24371ad4f 676 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 677 * READ LE 16U
JWitherstone 0:6cf24371ad4f 678 *
JWitherstone 0:6cf24371ad4f 679 * Description: This function is used to read an unsigned short integer from a charecter buffer in the platform
JWitherstone 0:6cf24371ad4f 680 * containing little endian processor
JWitherstone 0:6cf24371ad4f 681 *
JWitherstone 0:6cf24371ad4f 682 * Arguments : pmem Pointer to the charecter buffer
JWitherstone 0:6cf24371ad4f 683 *
JWitherstone 0:6cf24371ad4f 684 * Returns : val Unsigned short integer
JWitherstone 0:6cf24371ad4f 685 *
JWitherstone 0:6cf24371ad4f 686 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 687 */
JWitherstone 0:6cf24371ad4f 688
JWitherstone 0:6cf24371ad4f 689 USB_INT16U ReadLE16U (volatile USB_INT08U *pmem)
JWitherstone 0:6cf24371ad4f 690 {
JWitherstone 0:6cf24371ad4f 691 USB_INT16U val = *(USB_INT16U*)pmem;
JWitherstone 0:6cf24371ad4f 692 #ifdef __BIG_ENDIAN
JWitherstone 0:6cf24371ad4f 693 return __REV16(val);
JWitherstone 0:6cf24371ad4f 694 #else
JWitherstone 0:6cf24371ad4f 695 return val;
JWitherstone 0:6cf24371ad4f 696 #endif
JWitherstone 0:6cf24371ad4f 697 }
JWitherstone 0:6cf24371ad4f 698
JWitherstone 0:6cf24371ad4f 699 /*
JWitherstone 0:6cf24371ad4f 700 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 701 * WRITE LE 16U
JWitherstone 0:6cf24371ad4f 702 *
JWitherstone 0:6cf24371ad4f 703 * Description: This function is used to write an unsigned short integer into a charecter buffer in the
JWitherstone 0:6cf24371ad4f 704 * platform containing little endian processor
JWitherstone 0:6cf24371ad4f 705 *
JWitherstone 0:6cf24371ad4f 706 * Arguments : pmem Pointer to the charecter buffer
JWitherstone 0:6cf24371ad4f 707 * val Value to be placed in the charecter buffer
JWitherstone 0:6cf24371ad4f 708 *
JWitherstone 0:6cf24371ad4f 709 * Returns : None
JWitherstone 0:6cf24371ad4f 710 *
JWitherstone 0:6cf24371ad4f 711 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 712 */
JWitherstone 0:6cf24371ad4f 713
JWitherstone 0:6cf24371ad4f 714 void WriteLE16U (volatile USB_INT08U *pmem,
JWitherstone 0:6cf24371ad4f 715 USB_INT16U val)
JWitherstone 0:6cf24371ad4f 716 {
JWitherstone 0:6cf24371ad4f 717 #ifdef __BIG_ENDIAN
JWitherstone 0:6cf24371ad4f 718 *(USB_INT16U*)pmem = (__REV16(val) & 0xFFFF);
JWitherstone 0:6cf24371ad4f 719 #else
JWitherstone 0:6cf24371ad4f 720 *(USB_INT16U*)pmem = val;
JWitherstone 0:6cf24371ad4f 721 #endif
JWitherstone 0:6cf24371ad4f 722 }
JWitherstone 0:6cf24371ad4f 723
JWitherstone 0:6cf24371ad4f 724 /*
JWitherstone 0:6cf24371ad4f 725 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 726 * READ BE 32U
JWitherstone 0:6cf24371ad4f 727 *
JWitherstone 0:6cf24371ad4f 728 * Description: This function is used to read an unsigned integer from a charecter buffer in the platform
JWitherstone 0:6cf24371ad4f 729 * containing big endian processor
JWitherstone 0:6cf24371ad4f 730 *
JWitherstone 0:6cf24371ad4f 731 * Arguments : pmem Pointer to the charecter buffer
JWitherstone 0:6cf24371ad4f 732 *
JWitherstone 0:6cf24371ad4f 733 * Returns : val Unsigned integer
JWitherstone 0:6cf24371ad4f 734 *
JWitherstone 0:6cf24371ad4f 735 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 736 */
JWitherstone 0:6cf24371ad4f 737
JWitherstone 0:6cf24371ad4f 738 USB_INT32U ReadBE32U (volatile USB_INT08U *pmem)
JWitherstone 0:6cf24371ad4f 739 {
JWitherstone 0:6cf24371ad4f 740 USB_INT32U val = *(USB_INT32U*)pmem;
JWitherstone 0:6cf24371ad4f 741 #ifdef __BIG_ENDIAN
JWitherstone 0:6cf24371ad4f 742 return val;
JWitherstone 0:6cf24371ad4f 743 #else
JWitherstone 0:6cf24371ad4f 744 return __REV(val);
JWitherstone 0:6cf24371ad4f 745 #endif
JWitherstone 0:6cf24371ad4f 746 }
JWitherstone 0:6cf24371ad4f 747
JWitherstone 0:6cf24371ad4f 748 /*
JWitherstone 0:6cf24371ad4f 749 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 750 * WRITE BE 32U
JWitherstone 0:6cf24371ad4f 751 *
JWitherstone 0:6cf24371ad4f 752 * Description: This function is used to write an unsigned integer into a charecter buffer in the platform
JWitherstone 0:6cf24371ad4f 753 * containing big endian processor
JWitherstone 0:6cf24371ad4f 754 *
JWitherstone 0:6cf24371ad4f 755 * Arguments : pmem Pointer to the charecter buffer
JWitherstone 0:6cf24371ad4f 756 * val Value to be placed in the charecter buffer
JWitherstone 0:6cf24371ad4f 757 *
JWitherstone 0:6cf24371ad4f 758 * Returns : None
JWitherstone 0:6cf24371ad4f 759 *
JWitherstone 0:6cf24371ad4f 760 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 761 */
JWitherstone 0:6cf24371ad4f 762
JWitherstone 0:6cf24371ad4f 763 void WriteBE32U (volatile USB_INT08U *pmem,
JWitherstone 0:6cf24371ad4f 764 USB_INT32U val)
JWitherstone 0:6cf24371ad4f 765 {
JWitherstone 0:6cf24371ad4f 766 #ifdef __BIG_ENDIAN
JWitherstone 0:6cf24371ad4f 767 *(USB_INT32U*)pmem = val;
JWitherstone 0:6cf24371ad4f 768 #else
JWitherstone 0:6cf24371ad4f 769 *(USB_INT32U*)pmem = __REV(val);
JWitherstone 0:6cf24371ad4f 770 #endif
JWitherstone 0:6cf24371ad4f 771 }
JWitherstone 0:6cf24371ad4f 772
JWitherstone 0:6cf24371ad4f 773 /*
JWitherstone 0:6cf24371ad4f 774 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 775 * READ BE 16U
JWitherstone 0:6cf24371ad4f 776 *
JWitherstone 0:6cf24371ad4f 777 * Description: This function is used to read an unsigned short integer from a charecter buffer in the platform
JWitherstone 0:6cf24371ad4f 778 * containing big endian processor
JWitherstone 0:6cf24371ad4f 779 *
JWitherstone 0:6cf24371ad4f 780 * Arguments : pmem Pointer to the charecter buffer
JWitherstone 0:6cf24371ad4f 781 *
JWitherstone 0:6cf24371ad4f 782 * Returns : val Unsigned short integer
JWitherstone 0:6cf24371ad4f 783 *
JWitherstone 0:6cf24371ad4f 784 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 785 */
JWitherstone 0:6cf24371ad4f 786
JWitherstone 0:6cf24371ad4f 787 USB_INT16U ReadBE16U (volatile USB_INT08U *pmem)
JWitherstone 0:6cf24371ad4f 788 {
JWitherstone 0:6cf24371ad4f 789 USB_INT16U val = *(USB_INT16U*)pmem;
JWitherstone 0:6cf24371ad4f 790 #ifdef __BIG_ENDIAN
JWitherstone 0:6cf24371ad4f 791 return val;
JWitherstone 0:6cf24371ad4f 792 #else
JWitherstone 0:6cf24371ad4f 793 return __REV16(val);
JWitherstone 0:6cf24371ad4f 794 #endif
JWitherstone 0:6cf24371ad4f 795 }
JWitherstone 0:6cf24371ad4f 796
JWitherstone 0:6cf24371ad4f 797 /*
JWitherstone 0:6cf24371ad4f 798 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 799 * WRITE BE 16U
JWitherstone 0:6cf24371ad4f 800 *
JWitherstone 0:6cf24371ad4f 801 * Description: This function is used to write an unsigned short integer into the charecter buffer in the
JWitherstone 0:6cf24371ad4f 802 * platform containing big endian processor
JWitherstone 0:6cf24371ad4f 803 *
JWitherstone 0:6cf24371ad4f 804 * Arguments : pmem Pointer to the charecter buffer
JWitherstone 0:6cf24371ad4f 805 * val Value to be placed in the charecter buffer
JWitherstone 0:6cf24371ad4f 806 *
JWitherstone 0:6cf24371ad4f 807 * Returns : None
JWitherstone 0:6cf24371ad4f 808 *
JWitherstone 0:6cf24371ad4f 809 **************************************************************************************************************
JWitherstone 0:6cf24371ad4f 810 */
JWitherstone 0:6cf24371ad4f 811
JWitherstone 0:6cf24371ad4f 812 void WriteBE16U (volatile USB_INT08U *pmem,
JWitherstone 0:6cf24371ad4f 813 USB_INT16U val)
JWitherstone 0:6cf24371ad4f 814 {
JWitherstone 0:6cf24371ad4f 815 #ifdef __BIG_ENDIAN
JWitherstone 0:6cf24371ad4f 816 *(USB_INT16U*)pmem = val;
JWitherstone 0:6cf24371ad4f 817 #else
JWitherstone 0:6cf24371ad4f 818 *(USB_INT16U*)pmem = (__REV16(val) & 0xFFFF);
JWitherstone 0:6cf24371ad4f 819 #endif
JWitherstone 0:6cf24371ad4f 820 }