72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/********************************************************************************
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* Copyright (c) 2016, Beijing Tongfang Microelectroics Co., Ltd.
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* All rights reserved.
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* Module: VSP Data processing
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* Author: Yang Song
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* Version: V1.0
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* History:
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* 2016-09-22 Original version
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********************************************************************************/
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#include "global.h"
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/***************************************************************************
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* Function: usbVspSendChars
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* Description: 数据发送
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* Input: buf 待发送数据地址
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* Input: len 待发送数据长度
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* Output: NULL
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* Return: NULL
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* Other: NULL
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**************************************************************************/
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void usbVspSendChars(u8 *buf, u32 len)
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{
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u32 offset=0;
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u32 dly;
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if (len > 200*1024)
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{
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dly = 0;
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}
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else
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{
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dly = 1;
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}
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while(len >= VSPTXLEN){
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memcpy(g_abUsbEp2Buf, buf+offset, VSPTXLEN);
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usbEpnTxAll(2,g_abUsbEp2Buf,VSPTXLEN);
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TimerDelay(TIM2, dly);
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offset += VSPTXLEN;
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len -= VSPTXLEN;
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}
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memcpy(g_abUsbEp2Buf, buf+offset, len);
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usbEpnTxAll(2,g_abUsbEp2Buf,len);
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}
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/***************************************************************************
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* Function: usbVspRecvChars
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* Description: 数据接收
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* Input: 把收到的数据拷贝到buf
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* Input: bufSize buf的大小，防止越界
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* Output: 收到的数据长度
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* Return: NULL
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* Other: NULL
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**************************************************************************/
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u32 usbVspRecvChars(u8 *buf, u32 bufSize)
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{
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u32 rcvlen = 0;
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if (USBEP1STS & Bit19_En)
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{
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rcvlen = (USBEP1STS >> 8) & 0x000003FF;
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rcvlen = rcvlen > bufSize ? bufSize:rcvlen;
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memcpy(buf, g_abUsbEp1Buf, rcvlen);
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USBEP1CON |= Bit9_En; // clear buf 控制端点是bit10 其他端点是bit9
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}
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return rcvlen;
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}
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