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。
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/**
* 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
;
}
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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
