首页 » 技术SOS » 嵌入式系统 » MCU和嵌入式微处理器 » 关于pdiusbd12

关于pdiusbd12

菜鸟
2009-11-15 23:27:50
write(0x00,1); //select write(0xf1,1); //f1:Ack c in write(0x01,1); //01:Select End1 write(0xf1,1); //ack c out USART_Transmit(0xA1); write(0x80,1);//80:Read Endpoint Status tmp = read(); USART_Transmit(tmp); USART_Transmit(0xA2); write(0x40,1); //read last transaction status tmp = read(); USART_Transmit(tmp); write(0x00,1); //select read(); write(0xf0,1); read(); tmp = read(); lastsetup[0] = read();//first bit lastsetup[1] = read(); lastsetup[2] = read(); lastsetup[3] = read(); lastsetup[4] = read(); lastsetup[5] = read(); lastsetup[6] = read(); lastsetup[7] = read(); USART_Transmit(tmp); for(i=0;i
分享
关键词: pdiusbd12, C  
菜鸟
2009-11-16 13:02:25
1楼

接到Control Out的Setup(Get_Descriptor)后如上处理,但貌似事实上没有ACK,由串口看出这段程序完了之后主机又重发Bus Reset和Setup(Get_Descriptor),怎么回事?

院士
2009-11-26 14:25:06
2楼

建议BBS内交流

专家
2023-02-21 22:01:29
3楼

排版有点乱啊

高工
2023-02-21 22:02:09
4楼

看不出来什么问题