usbdriver.c

SmartARM2400系列开发板全套资料

/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                      graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name:			USBDriver.c
** Last modified Date:	2005-8-6
** Last Version:		V1.0
** Descriptions:		LPC23xx USB 应用层
**						LPC23xx USB Application Layer
**------------------------------------------------------------------------------------------------------
** Created by:			郑明远 		MingYuan Zheng
** Created date:		2005-8-6
** Version:				V1.0
** Descriptions:		初始版本	The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by:			
** Modified date:
** Version:				
** Descriptions:
**
**------------------------------------------------------------------------------------------------------
** Modified by: 
** Modified date:
** Version:	
** Descriptions: 
**
********************************************************************************************************/
#include "config.h"
#include "string.h"
#include "usbdevconfig.h"

/* define USB event flag variable */
volatile EPPFLAGS bEPPflags;										/* 定义 USB 事件标志变量 */

/* Stack of the task that deal with control transfer */
OS_STK  TaskSetupStk[128];								/* Setup包处理任务堆栈  */

/* the pointer of Event that deal SETUP packet */
OS_EVENT *pSetup_Event;									/* Setup包处理任务事件指针 */

/* USB receive or transmit control block of LPC23xx USB each endpoint */
CTRL_USB Ctrl_Usb[NUM_ENDPOINTS];						/* LPC23xx USB 各端点对应的 USB 接收或发送控制块 */

INT8U __GucDevTaskSetUpPrio = 0;

/***********************************************************************************************************************
** 函数名称 : usbDevInitialize()							Name	 : usbDevInitialize()
** 功能描述 : 初始化 USB 设备控制器		  			    Function : Initialize the USB device controller 
** 输	 入 : 无							 			Input	 : ucDevTaskSetUpPrio : TaskUp任务优先级
** 输	 出 : 0: 初始化成功  >0: 初始化失败(错误码)		Output	 : 0: Initialize sucessfully    >0: Initialize fail(error code)
***********************************************************************************************************************/
INT8U usbDevInitialize (INT8U ucDevTaskSetUpPrio)
{	
	int i; 
    INT8U ucErr;
    
	OS_ENTER_CRITICAL();
	USB_InitHardware();									/* 初始化硬件         	 Initialize the hardware */
	bEPPflags.value = 0;								/* 置USB事件标志为0   	 set USB event flags to zero */
	
	if (USB_ReadTestRegister() != 0xA50F)				/* 读测试寄存器       	 read test register */
	{
		OS_EXIT_CRITICAL(); 
		return USB_ERR_READ_TESTREG;					/* 初始化失败         	 initialize fail    */
	}
	
	USB_USBDevIntConfig();								/* 配置中断 		  	 configure the USB interrupt */
	USB_ConfigEndpoint();								/* 配置端点			 	 configure the endpoint */

#if DMA_ENGINE_EN	
	USB_DMAInit();										/* 初始化USB DMA	  	 initialize the USB DMA */
	USB_SetMode(0x28);
#else
	USB_SetMode(0x00);									/* 成功传输才产生中断 	 generate interrupt only transmit sucessfully */
#endif
	
	pSetup_Event = OSMboxCreate(NULL);				    /* SETUP包处理任务消息邮箱 */
 	if (pSetup_Event == NULL)					
 	{
	 	OS_EXIT_CRITICAL(); 
 	 	return USB_ERR_CREATE_SEM;						/* 创建失败,返回错误码   return error code when create fail */
	}

	for(i = 0; i < NUM_ENDPOINTS; i++)
	{
		Ctrl_Usb[i].bEpReady = 0;
		Ctrl_Usb[i].bTaskWaiting = 0;
		Ctrl_Usb[i].Ep_Sem = OSSemCreate(0);
		if (Ctrl_Usb[i].Ep_Sem == NULL)
		{
			OS_EXIT_CRITICAL(); 
			return USB_ERR_CREATE_SEM;					/* 创建信号量失败		 create semaphore fail */
		}				
	}
	
 	ucErr = OSTaskCreate(usbDevTaskSetup, (void *)0, &TaskSetupStk[127], ucDevTaskSetUpPrio);
 	if (ucErr != OS_NO_ERR) {
 	    __GucDevTaskSetUpPrio = 0;
 	    OS_EXIT_CRITICAL();
 	    return USB_ERR_CREATETASK_FAIL;
 	}
 	
	USB_Reconnect();			
	reconnect_USB();									/* 重新连接USB 			 reconnect the USB */
 	
 	OS_EXIT_CRITICAL();
 	
 	__GucDevTaskSetUpPrio = ucDevTaskSetUpPrio;     /*  记录下该任务的优先级                    */
 	return USB_NO_ERR;							   		/* 初始化USB成功    	 Initialize USB sucessfully */
}

/***********************************************************************************************************************
** 函数名称 : usbDevDeInit()							
** 功能描述 : 卸载 USB 设备控制器		  			    
** 输	 入 : 无							 			
** 输	 出 : TRUE:成功, FALSE:失败
***********************************************************************************************************************/
INT8U usbDevDeInit (void)
{
    OS_TCB *ptcb = NULL;
    INT8U   ucPrio;
    INT8U   i, ucErr;
    
    USBDEBUG_SENDSTR("\r\nusbDevDeInit...\r\n");
    
    OS_ENTER_CRITICAL();
    ucPrio = __GucDevTaskSetUpPrio;
    OS_EXIT_CRITICAL();
    
    i = 0;
    if (ucPrio) {
        ptcb = OSTCBPrioTbl[ucPrio];                    /*  查询枚举任务是否已经存在    */
        if (ptcb != NULL) {
            OSMboxPost(pSetup_Event, (void *)__USB_DEV_SETUP_DELTASK);      /*  调度任务已存在,申请删除此任务*/
            while (OSTCBPrioTbl[ucPrio] != NULL) {          /*  等待任务删除完毕            */
                OSTimeDly(1);
                if (i++ > 200) {
                    i = 0;
                    USBDEBUG_SENDSTR("\r\nwait delete usbDevTaskSetup task complete\r\n");
                }
            }
            __GucDevTaskSetUpPrio = 0;
        }
    }
    
    pSetup_Event = OSMboxDel(pSetup_Event, OS_DEL_ALWAYS, &ucErr);
	for(i = 0; i < NUM_ENDPOINTS; i++) {
		Ctrl_Usb[i].Ep_Sem = OSSemDel(Ctrl_Usb[i].Ep_Sem, OS_DEL_ALWAYS, &ucErr);
    }
    
    return TRUE;
}

/***********************************************************************************************************************
** 函数名称: void usbDevTaskSetup(void *pdata)			Name:	    void usbDevTaskSetup(void *pdata)
** 功能描述: 控制传输处理							Function:   deal with control transfer
** 输	 入: void *pdata  任务参数					Input:		void *pdata:   parameter of the task
** 输	 出: 无										Output:	    NULL
** 注	 意: 该任务的优先级应高于其它任务,才能在	Note:		the prior of the task must be higher than other,so 
			 任何情况下传输SETUP包								it will be sucessful when tranfering SETUP packet										 
************************************************************************************************************************/
void  usbDevTaskSetup(void *pdata)
{
#if OS_CRITICAL_METHOD == 3      			            /* Allocate storage for CPU status register */
	OS_CPU_SR  cpu_sr;
#endif
	INT8U  err;
	INT32U uiMsgCode;
	
	pdata = pdata;                			            /* Prevent compiler warning */
	for (;;)
	{
		uiMsgCode = (INT32U)OSMboxPend(pSetup_Event, 0, &err);  /* 等待Setup包		 wait for SETUP packet */
		if (err == OS_NO_ERR){				            /* 接收到Setup包 	 have received SETUP packet */
			if (uiMsgCode == __USB_DEV_SETUP_NORMAL) {
    			OS_ENTER_CRITICAL();			        /* 关中断			 disable all interrupt */
    			control_handler();				        /* 进行控制传输处理	 deal with control transfer */
    			OS_EXIT_CRITICAL();			            /* 开中断			 enable all interrupt */
		    } else if (uiMsgCode == __USB_DEV_SETUP_DELTASK) {
		        USBDEBUG_SENDSTR("\r\nusbDevTaskSetup task delete!");
		        OSTaskDel(OS_PRIO_SELF);
		    }
		}
	}
}


/*******************************************************************************************************************************
** 函数名称: INT8U ReadPort1()									Name:		 INT8U ReadPort1()	
** 功能描述: 从端口 1 接收len个字节								Function:	 receive len Bytes from Port1
** 输　  入: INT32U  len: 要接收的字节数						Input:		 INT32U  len:   	numbers will be receive
						 (取值范围为0x00000001 ~ 0xFFFFFFFF)			    			    	(range: 0x00000001 ~ 0xFFFFFFFF)	
			 INT8U   recbuff:   接收缓冲区指针								 INT8U   recbuff:   receive buffer
			 INT16U  timeout:   超时等待时间, 等于0表示无限等待 			 INT16U  timeout:   timeout	of receiving,0 indicates limitless waiting		 
** 输 　 出: 0: 接收成功	 > 0: 接收失败(错误码)				Output:		 0:	sucessfully		>0 fail (error code)
*******************************************************************************************************************************/
INT8U ReadPort1(INT32U len, INT8U *recbuff, INT16U timeout)
{

#if DMA_ENGINE_EN
	return (USB_ReadPortDMA(2, &Ctrl_Usb[0], len, recbuff, timeout));		/* DMA方式 */
#else
	return (USB_ReadPort(2, 16, 1, &Ctrl_Usb[0], len, recbuff, timeout));	/* 非DMA方式 */
#endif

}	//从物理端点 2 接收数据


/*******************************************************************************************************************************
** 函数名称: INT8U ReadPort2()									Name:		 INT8U ReadPort2()	
** 功能描述: 从端口 2 接收len个字节								Function:	 receive len Bytes from Port2
** 输　  入: INT32U  len: 要接收的字节数						Input:		 INT32U  len:   	numbers will be receive
						 (取值范围为0x00000001 ~ 0xFFFFFFFF)			    			    	(range: 0x00000001 ~ 0xFFFFFFFF)	
			 INT8U   recbuff:   接收缓冲区指针								 INT8U   sendbuff:  receive buffer
			 INT16U  timeout:   超时等待时间, 等于0表示无限等待 			 INT16U  timeout:   timeout	of receiving,0 indicates limitless waiting		 
** 输 　 出: 0: 接收成功	 > 0: 接收失败(错误码)				Output:		 0:	sucessfully		>0 fail (error code)
*******************************************************************************************************************************/
INT8U ReadPort2(INT32U len, INT8U *recbuff, INT16U timeout)
{

#if DMA_ENGINE_EN
	return (USB_ReadPortDMA(4, &Ctrl_Usb[2], len, recbuff, timeout));		/* DMA方式 */
#else
	return (USB_ReadPort(4, 64, 2, &Ctrl_Usb[2], len, recbuff, timeout));	/* 非DMA方式 */
#endif

}	//从物理端点 4 接收数据


/*******************************************************************************************************************************
** 函数名称: INT8U WritePort1()									Name:		 INT8U WritePort1()	
** 功能描述: 用端口 1 发送len个字节								Function:	 Send len Bytes via Port1
** 输　  入: INT32U  len: 发送的字节数							Input:		 INT32U  len:   	numbers will be send
						  (取值范围为0x00000001 ~ 0xFFFFFFFF)			    			    	(range: 0x00000001 ~ 0xFFFFFFFF)