当在读状态i设置DRUADDR动作时，使用寄存器作为源，在写状态中使用的DRADADR动作中的源也自动改变

你好，
我尝试在主模式中使用FX3来发送/接收数据到简单的外部总线。总线具有8位数据（双向）、7位地址（仅从FX侧写入）和WR/RD线用于简单切换（也仅从FX写入）。FX将有1个用于数据写入的大端点、1个用于数据读取的大端点和1个用于命令的控制端点。
因此，我已经创建了2个起始状态，一个用于读取，另一个用于写入（我计划根据接收的命令在它们之间切换）。对于写入，我通过在格式和lt；ADDR & gt；& lt；数据& gt中的大容量端点从PC接收2字节，然后使用DRUADDR（源：来自线程套接字）将其放到外部总线上，DRI数据然后切换WR。对于读取，在收到命令并通过控制端点读取的字节数之后，我计划手动编程DATAULCOUNT，然后使用DRUADDR（源：来自寄存器）将所需地址放入总线，然后切换RD，然后通过INA数据将接收到的数据放在大容量端点。
问题是，当在读状态i设置DRUADDR动作时，使用寄存器作为源，在写状态中使用的DRADADR动作中的源也自动改变，但我需要使用THEADSoCK作为源。我怎样才能解决这个问题？也许我错了，应该采用不同的方法吗？先谢谢你。



     以下为原文
   Hi,
    I am trying to use FX3 in master mode to send/receive data to simple external bus. Bus has 8bit data (bidirectional), 7bit address (write-only from FX side) and WR/RD lines for simple toggle (also write-only from FX). FX will have 1 bulk endpoint for data writes, 1 bulk endpoint for data reads and 1 control endpoint for commands.
    So I have created 2 START states, one for reading and another for writing (I plan to switch between them depending on command received). For writing I receive 2 bytes from PC via bulk endpoint in format then put it to external bus using DR_ADDR (source: from thread socket), DR_DATA then toggle WR. For reading, after I receive command with address and number of bytes to read via control endpoint, I plan to manually program DATA_COUNT, then put desired address to bus using DR_ADDR (source: from register) then toggle RD then put received data to bulk endpoint via IN_DATA.
    The problem is that when in read state I set DR_ADDR action to use register as a source, source in DR_ADDR action used in write state automatically changed too, but I need to use ThreadSocket as a source there. How can i solve this? Maybe I am on wrong way and different approach should be used? Thank you in advance.