在调用完上面的UFI命令后，ufiCmdRunning.state就被设置为UFI_STATE_BEGIN态，在主循环中调用本函数，用来判断UFI命令是否执行完毕，以及是否执行成功。
|
/**
* UFI命令监视函数，判断命令是否执行完毕，底层有错误则进行容错处理
*/
short funUfiRunning(void)
{
switch(ufiCmdRunning.state)
{
//开始运行命令
case UFI_STATE_BEGIN:
usbTimer = 0;
ufiCmdRunning.count = 0;
ufiCmdRunning.state = UFI_STATE_RUNNING;
break;
//命令运行中
case UFI_STATE_RUNNING:
//检查命令是否执行完毕
if(usbIsCmdOver() == USB_CMD_OVER)
{
//USB协议层命令执行失败
if (usbGetCmdResult() != 0)
{
//底层命令执行失败后，对端口复位后重新执行，重新执行超过150次则认为失败
ufiCmdRunning.count++;
if (ufiCmdRunning.count > 150)
{
ufiCmdRunning.error = UFI_ERR_MUCH_ERR;
ufiCmdRunning.state = UFI_STATE_OVER;
}
else
{
//复位BulkOut端口
usbClearBulkOut();
ufiCmdRunning.state = UFI_STATE_RESET_OUT;
}
break;
}
//UFI命令执行成功
if ((ufiCmdRunning.csw.bCSW_Status) == 0x00 && (ufiCmdRunning.csw.dCSW_Signature == 0x53425355))
{
ufiCmdRunning.error = 0;
}
//UFI命令执行失败
else
{
ufiCmdRunning.error = UFI_ERR_CSW;
}
ufiCmdRunning.state = UFI_STATE_OVER;
}
//底层命令超时，返回失败
else if (usbTimer >= 200)
{
ufiCmdRunning.error = UFI_ERR_TIMEOUT;
ufiCmdRunning.state = UFI_STATE_OVER;
}
break;
//BulkOut端口复位结束
case UFI_STATE_RESET_OUT:
if(usbIsCmdOver() == USB_CMD_OVER)
{
//复位BulkIn端口
usbClearBulkIn();
ufiCmdRunning.state = UFI_STATE_RESET_IN;
}
break;
//BulkIn端口复位结束
case UFI_STATE_RESET_IN:
if(usbIsCmdOver() == USB_CMD_OVER)
{
//读取端口错误原因
ufiRequestSense(bulkDataBuf);
ufiCmdRunning.state = UFI_STATE_REQUEST_SENSE;
}
break;
//端口错误原因读取完毕
case UFI_STATE_REQUEST_SENSE:
if(usbIsCmdOver() == USB_CMD_OVER)
{
//重新执行底层Bulk命令
ufiCmdRunning.funUfiCmd((unsigned char *)&ufiCmdRunning.cbw, ufiCmdRunning.pBuf, (unsigned char *)&ufiCmdRunning.csw);
usbTimer = 0;
ufiCmdRunning.state = UFI_STATE_RUNNING;
}
break;
}
return ufiCmdRunning.state;
}
|
本文转自 tywali 51CTO博客，原文链接：http://blog.51cto.com/lancelot/318291，如需转载请自行联系原作者