阅读:2239回复:11
请教:AU1200 SD卡最大支持容量
请教,用AU1200,WINCE5.0,最大可以支持到多大容量的SD卡,这个容量在什么地方可以设置,多谢!
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沙发#
发布于:2008-06-27 15:15
4G 需要安装pb的更新 驱动支持20.的规范就行了
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板凳#
发布于:2008-06-27 15:15
具体查看更新的说明,很清楚的
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地板#
发布于:2008-07-07 10:09
多谢!
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地下室#
发布于:2008-07-07 10:56
我已经安装了Windows CE 5.0_Update_070430_2007M04.htm的更新,按照里面说的,最大可以支持到32G,This update installs SD Bus driver compliant with SD 2.0 Specification and an enhanced SD Memory Driver that supports High Capacity Cards of size > 4GB and up to 32 GB。但是我重新编译后,仍然不支持4G的卡,请教还需要更改何处?谢谢!
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5楼#
发布于:2008-07-07 11:52
好像要设置一个环境变量
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6楼#
发布于:2008-07-07 14:08
To enable SD Bus2 set IMGSDBUS2 = 1. 好像是这个意思
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7楼#
发布于:2008-07-07 14:31
SD host controller considerations
The new SD Physical Layer Specification 2.0 is targeted only to the SD Bus. Therefore, you do not have to change the SD host controller. However, a common problem occurs because of the new command support that exists in the SD 2.0 specification that uses Response 7. When you submit a request in the SD host controller, make sure that Response 7 is handled. Otherwise, the request fails with an SD_API_STATUS_INVALID_PARAMETER error. You may handle Response 7 by introducing a new enum variable for the command response in the SD host controller. 需要在驱动里加如下语句,加上就可以了,祝你成功 case ResponseR7: commandRegister |= SD_CMD_RT_R1; break; |
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8楼#
发布于:2008-07-07 17:34
多谢!我马上试一下。
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9楼#
发布于:2008-07-08 17:09
多谢!搞定了。
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10楼#
发布于:2008-07-09 14:34
是加在哪个函数里面呀?
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11楼#
发布于:2008-07-10 22:08
sendcommad和Getresponse里面加上对Response7的相应就OK了。。
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