CH554使用进行u***串口透传，怎么操作FT232的USB转串口芯片？

CH554使用进行u***串口透传，怎么操作FT232的USB转串口芯片，案例中只有CH34X，PL2303，CP210x。怎么添加FT232的支持？谢谢了
如果在原例程上修改添加更好不过了。

向可嘉

2022-5-19 09:55:16

您好
开发特定USB设备的主机时，可以使用一些上位机软件抓取USB设备和上位机的通信，然后使用MCU模拟这个PC的通信过程。
在枚举获取描述符部分，FT232和其他设备一样，在设置波特率等方面可能不同。这边提供一段FT232波特率等配置的代码，按照这样的顺序发送SETUP包，就是配置FT232的过程，希望能有所帮助。
unsigned char Baud_buf1_5[8]={0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
unsigned char Baud_buf6[8]={0x02,0x01,0x00,0x00,0x81,0x00,0x00,0x00};
unsigned char Baud_buf7[8]={0x40,0x09,0x10,0x00,0x00,0x00,0x00,0x00};
unsigned char Baud_buf8[8]={0xc0,0x05,0x00,0x00,0x00,0x00,0x02,0x00};  //无
unsigned char Baud_buf9[8]={0x40,0x04,0x07,0x00,0x00,0x00,0x00,0x00};  //无
unsigned char Baud_buf10[8]={0x40,0x01,0x01,0x01,0x00,0x00,0x00,0x00};
unsigned char Baud_buf11[8]={0x40,0x01,0x02,0x02,0x00,0x00,0x00,0x00};
unsigned char Baud_buf12[8]={0x40,0x02,0x00,0x00,0x00,0x00,0x00,0x00}; //无
//unsigned char Baud_buf13[8]={0x40,0x03,0xc4,0x09,0x00,0x00,0x00,0x00};
unsigned char Baud_buf14[8]={0x40,0x03,0xc4,0x09,0x00,0x00,0x00,0x00}; //特特率
unsigned char Baud_buf15[8]={0x40,0x01,0x02,0x02,0x00,0x00,0x00,0x00}; //无
unsigned char Baud_buf16[8]={0x40,0x01,0x01,0x01,0x00,0x00,0x00,0x00}; //无
unsigned char Baud_buf17[8]={0x40,0x04,0x07,0x02,0x00,0x00,0x00,0x00}; //设置数据位、停止位、校验位等
unsigned char Baud_buf18[8]={0x40,0x02,0x00,0x00,0x00,0x00,0x00,0x00}; //流控设置
unsigned char Baud_buf19[8]={0x40,0x06,0x00,0x00,0x00,0x00,0x00,0x00};
//配置FT232R波特率
void FT232R_Baud_Config( UINT32 baud )
{
  unsigned char s=0,ix;
  unsigned short int len;
  FT232R_Baud_Set(Baud_buf1_5);
  FT232R_Baud_Set(Baud_buf1_5);
  FT232R_Baud_Set(Baud_buf6);
  FT232R_Baud_Set(Baud_buf7);
  FT232R_Baud_Set(Baud_buf8);
  FT232R_Baud_Set(Baud_buf10);
  FT232R_Baud_Set(Baud_buf11);
  FT232R_Baud_Set(Baud_buf12);
  baud = 10*3000000/baud; //分频
  baud = (baud+5)/10;       //做四舍五入
  Baud_buf14[2]=baud&0xff;
  Baud_buf14[3]=(baud>>8)&0xff;
  Baud_buf14[4]=(baud>>16)&0xff;
  FT232R_Baud_Set(Baud_buf14);//这一次的波特率
  FT232R_Baud_Set(Baud_buf17);
  FT232R_Baud_Set(Baud_buf18);
  FT232R_Baud_Set(Baud_buf19);
}

李茜

2022-5-19 09:55:50

你好，根据你提供的数组，我添加到CH554_uart2uart的工程，当前实现了FT232插入时检测设备，并且能接收一段我开发板发送的字符，但是当开发板已经发送结束了，CH554还是一直接收到FT232发送的东西，并且串口打印是乱码的。

下面是工程中我添加的FT232设置波特率部分函数

UINT8 FT232_Baud_Config(UINT32 baud)
{
  UINT8 s;
  UINT16 tmp;
  TxBuffer[0] = 0x40;
  TxBuffer[1] = 0x00;
  TxBuffer[2] = 0x00;
  TxBuffer[3] = 0x00;
  TxBuffer[4] = 0x00;
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x00;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  TxBuffer[0] = 0x40;
  TxBuffer[1] = 0x00;
  TxBuffer[2] = 0x00;
  TxBuffer[3] = 0x00;
  TxBuffer[4] = 0x00;
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x00;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  TxBuffer[0] = 0x02;
  TxBuffer[1] = 0x01;
  TxBuffer[2] = 0x00;
  TxBuffer[3] = 0x00;
  TxBuffer[4] = 0x81;
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x00;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  TxBuffer[0] = 0x40;
  TxBuffer[1] = 0x09;
  TxBuffer[2] = 0x10;
  TxBuffer[3] = 0x00;
  TxBuffer[4] = 0x00;
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x00;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  TxBuffer[0] = 0xc0;
  TxBuffer[1] = 0x05;
  TxBuffer[2] = 0x00;
  TxBuffer[3] = 0x00;
  TxBuffer[4] = 0x00;
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x02;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  TxBuffer[0] = 0x40;
  TxBuffer[1] = 0x01;
  TxBuffer[2] = 0x01;
  TxBuffer[3] = 0x01;
  TxBuffer[4] = 0x00;
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x00;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  TxBuffer[0] = 0x40;
  TxBuffer[1] = 0x01;
  TxBuffer[2] = 0x02;
  TxBuffer[3] = 0x02;
  TxBuffer[4] = 0x00;
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x00;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  TxBuffer[0] = 0x40;
  TxBuffer[1] = 0x02;
  TxBuffer[2] = 0x00;
  TxBuffer[3] = 0x00;
  TxBuffer[4] = 0x00;
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x00;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  tmp=(10*3000000/baud);
  tmp = (tmp+5)/10;
  TxBuffer[0] = 0x40;
  TxBuffer[1] = 0x03;
  TxBuffer[2] = (UINT8)(tmp&0Xff);
  TxBuffer[3] = (UINT8)((tmp>>8)&0xff);
  TxBuffer[4] = (UINT8)((tmp>>16)&0xff);
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x00;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  TxBuffer[0] = 0x40;
  TxBuffer[1] = 0x04;
  TxBuffer[2] = 0x07;
  TxBuffer[3] = 0x02;
  TxBuffer[4] = 0x00;
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x00;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  TxBuffer[0] = 0x40;
  TxBuffer[1] = 0x02;
  TxBuffer[2] = 0x00;
  TxBuffer[3] = 0x00;
  TxBuffer[4] = 0x00;
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x00;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  TxBuffer[0] = 0x40;
  TxBuffer[1] = 0x06;
  TxBuffer[2] = 0x00;
  TxBuffer[3] = 0x00;
  TxBuffer[4] = 0x00;
  TxBuffer[5] = 0x00;
  TxBuffer[6] = 0x00;
  TxBuffer[7] = 0x00;
  s = HostCtrlTransfer( NULL, NULL );

  return s;
}

下面是用SSCOM串口工具打印的乱码信息: