Trying to enumerate USB Host using NXP's USBHostLite using LPC2468 controller. It stuck at "while (!HOST_RhscIntr)" in Host_EnumDev()
Below is my Host_init function(reference LPC2468 USBHostlite code)
void Host_Init (void)
{
USB_INT32U pinsel;
USB_INT32U pinmode;
PCONP |= 0x80000000;
VICIntEnClr = (1 << 22); /* Enable the USB interrupt source */
OTG_CLK_CTRL = 0x00000001; /* Enable USB host clock */
while ((OTG_CLK_STAT & 0x00000001) == 0) {
}
/* P0[12] = USB_PPWR2 01 */
pinsel = PINSEL0;
pinsel &= 0xFCFFFFFF;
pinsel |= 0x01000000;
PINSEL0 = pinsel;
/* P0[31] = USB_D+2 */
pinsel = PINSEL1;
pinsel &= 0x3FFFFFFF;
pinsel |= 0x40000000;
PINSEL1 = pinsel;
/* P1[30] = USB_PWRD2 01 */
/* P1[31] = USB_OVRCR2 01 */
pinsel = PINSEL3;
pinsel &= 0x0FFFFFFF;
pinsel |= 0x50000000;
PINSEL3 = pinsel;
PRINT_Log("Initializing Host Stack\n\r");
Hcca = (volatile HCCA *)0x7FD00000;
TDHead = (volatile HCTD *)0x7FD00100;
TDTail = (volatile HCTD *)0x7FD00110;
EDCtrl = (volatile HCED *)0x7FD00120;
EDBulkIn = (volatile HCED *)0x7FD00130;
EDBulkOut = (volatile HCED *)0x7FD00140;
TDBuffer = (volatile USB_INT08U *)0x7FD00150;
FATBuffer = (volatile USB_INT08U *)0x7FD001D0;
UserBuffer = (volatile USB_INT08U *)0x7FD01000;
/* Initialize all the TDs, EDs and HCCA to 0 */
Host_EDInit(EDCtrl);
Host_EDInit(EDBulkIn);
Host_EDInit(EDBulkOut);
Host_TDInit(TDHead);
Host_TDInit(TDTail);
Host_HCCAInit(Hcca);
Host_DelayMS(50); /* Wait 50 ms before apply reset */
HcControl = 0; /* HARDWARE RESET */
HcControlHeadED = 0; /* Initialize Control list head to Zero */
HcBulkHeadED = 0; /* Initialize Bulk list head to Zero */
/* SOFTWARE RESET */
HcCommandStatus = OR_CMD_STATUS_HCR;
HcFmInterval = DEFAULT_FMINTERVAL; /* Write Fm Interval and Largest Data Packet Counter */
/* Put HC in operational state */
HcControl = (HcControl & (~OR_CONTROL_HCFS)) | OR_CONTROL_HC_OPER;
HcRhStatus = OR_RH_STATUS_LPSC; /* Set Global Power */
HcHCCA = (USB_INT32U)Hcca;
HcInterruptStatus |= HcInterruptStatus; /* Clear Interrrupt Status */
/* Enable interrupts */
HcInterruptEnable = OR_INTR_ENABLE_MIE |
OR_INTR_ENABLE_WDH |
OR_INTR_ENABLE_RHSC;
VICIntSelect &= ~(1 << 22); /* Configure the ISR handler */
VICVectAddr22 = (USB_INT32U)Host_Isr; /* Set the vector address */
VICIntEnable = (1 << 22); /* Enable the USB interrupt source */
PRINT_Log("Host Initialized\n\r");
}
Please what mistake I am doing?
