usb_otg_dev_in.c

三星 S3C2460 USB OTG监控代码

/*******************************************************************************
* File Name    : usb_otg_dev_in.c
* Description  : S3C2460A USB OTG bulk-IN operation
* Author       : Haksoo Kim
* Dept         : Mobile solution, AP
* Created Date : 2005.06.02
* Version      : 1.0
* History
*   R1.0 (2005.06.02): First Release
********************************************************************************/ 

#include <string.h>

#include "Option.h"
#include "2460addr.h"
#include "2460lib.h"

#include "2460usb_otg_dev.h"
#include "usb_otg_dev_main.h"
#include "usb_otg.h"
#include "usb_otg_dev_lib.h"
#include "usb_otg_dev_setup.h"
#include "usb_otg_dev_in.h"


// ===================================================================
// All following commands will operate in case 
// - in_csr1 is valid.
// ===================================================================

#define SET_EP1_IN_PKT_READY()  rIN_CSR1_REG= ( in_csr1 &(~ EPI_WR_BITS)\
					| EPI_IN_PKT_READY )	 
#define SET_EP1_SEND_STALL()	rIN_CSR1_REG= ( in_csr1 & (~EPI_WR_BITS)\
					| EPI_SEND_STALL) )
#define CLR_EP1_SENT_STALL()	rIN_CSR1_REG= ( in_csr1 & (~EPI_WR_BITS)\
					&(~EPI_SENT_STALL) )
#define FLUSH_EP1_FIFO() 	rIN_CSR1_REG= ( in_csr1 & (~EPI_WR_BITS)\
					| EPI_FIFO_FLUSH) )


// ***************************
// *** VERY IMPORTANT NOTE ***
// ***************************
// Prepare the code for the packit size constraint!!!

// EP1 = IN end point. 

unsigned char ep1Buf[OTG_EP1_PKT_SIZE];
int transferIndex=0;

void UsbOtg_Ep1TxHandler(void)
{		
	transferIndex++;
	
	PrepareEp1Fifo(); 
	
    //* Clear interrupt
    apOTG_TLI_DEV_S->InEP[OTG_DEV_BULKIN_ENDP].status = ~0;
	
	return;	
}

void PrepareEp1Fifo(void)
{
	uint8 i;
	
	//* Clear IN TX FIFO READY bit
	apOTG_TLI_DEV_S->InEP[OTG_DEV_BULKIN_ENDP].control &= ~OTG_DEV_TX_FIFOREADY;
	
	for(i=0;i<OTG_EP1_PKT_SIZE;i++)
		ep1Buf[i]=(uint8)(transferIndex+i); // test data    

	//* Writing tx data count
	apOTG_TLI_DEV_S->InEP[OTG_DEV_BULKIN_ENDP].txCount = OTG_EP1_PKT_SIZE;
		
	WrPktEp1(ep1Buf,OTG_EP1_PKT_SIZE);
	
	//* Setting IN TX FIFO READY bit
	apOTG_TLI_DEV_S->InEP[OTG_DEV_BULKIN_ENDP].control |= OTG_DEV_TX_FIFOREADY;
	
	ptrTxFifo1 = OTG_DEV_TX_FIFO(OTG_DEV_BULKIN_ENDP);
}