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USB 问题请教
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我用USBN9604开发USB设备,目前控制通道和BULK通道都能正常发送数据。
但是当用微软的WHQL的测试工具测试USB Address Description时失败。
这个case会对地址1-127不断做如下测试
CF4.CF0 : VAR[INFO ] 2 : Assertion 9.22.1: Port Reset
CF4.CF0 : VAR[PASS ] 2 : Assertion 9.22.1:
CF4.CF0 : +VAR+PASS 2 : Assertion 9.22.1: Ends
CF4.CF0 : VAR[INFO ] 3 : Assertion 9.22.3: Set Address
CF4.CF0 : VAR[INFO ] 3 : Setting device to address 1
CF4.CF0 : VAR[PASS ] 3 : Assertion 9.22.3:
CF4.CF0 : +VAR+PASS 3 : Assertion 9.22.3: Ends
CF4.CF0 : VAR[INFO ] 4 : Assertion 9.22.4: Get Device Descriptor
CF4.CF0 : VAR[PASS ] 4 : Assertion 9.22.4:
CF4.CF0 : +VAR+PASS 4 : Assertion 9.22.4: Ends
CF4.CF0 : VAR[INFO ] 5 : Assertion 9.22.4: Get Configuration Descriptor
CF4.CF0 : VAR[PASS ] 5 : Assertion 9.22.4:
CF4.CF0 : +VAR+PASS 5 : Assertion 9.22.4: Ends
现在遇到的问题是:第一轮测试地址从1设到127都能成功。但第二轮时出错了(当然有时是第3轮或第4轮)。错误信息如下:
CF4.CF0 : VAR[INFO ] 546 : Assertion 9.22.1: Port Reset
CF4.CF0 : VAR[PASS ] 546 : Assertion 9.22.1:
CF4.CF0 : +VAR+PASS 546 : Assertion 9.22.1: Ends
CF4.CF0 : VAR[INFO ] 547 : Assertion 9.22.3: Set Address
CF4.CF0 : VAR[INFO ] 547 : Setting device to address 12
CF4.CF0 : VAR[PASS ] 547 : Assertion 9.22.3:
CF4.CF0 : +VAR+PASS 547 : Assertion 9.22.3: Ends
CF4.CF0 : VAR[INFO ] 548 : Assertion 9.22.4: Get Device Descriptor
CF4.CF0 : VAR[PASS ] 548 : Assertion 9.22.4:
CF4.CF0 : +VAR+PASS 548 : Assertion 9.22.4: Ends
CF4.CF0 : VAR[INFO ] 549 : Assertion 9.22.4: Get Configuration Descriptor
CF4.CF0 : VAR[PASS ] 549 : Assertion 9.22.4:
CF4.CF0 : +VAR+PASS 549 : Assertion 9.22.4: Ends
CF4.CF0 : VAR[INFO ] 550 : Assertion 9.22.1: Port Reset
CF4.CF0 : VAR[INFO ] 550 : Data received from request does not match previous data.
CF4.CF0 : VAR[INFO ] 550 : Data received:
CF4.CF0 : VAR[INFO ] 550 : 01 03
CF4.CF0 : VAR[SEV1 ] 550 : Assertion 9.22.1:
CF4.CF0 : +VAR+SEV1 550 : Assertion 9.22.1: Ends
CF4.CF0 : +TEST+SEV1 : Ending Set Address
请问:
这可能是什么原因呢?希望高人指点,不胜感激!!!
关键词: 问题 请教 CF4.CF0 Assertion 9
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