USART如何以和谐的方式控制UTXINV，URXINV

我发现了很多模式和STA寄存器位。我还没有找到UTXIN和URXIN。我使用RS 485通信。有时A和B线反向连接。如果没有得到预期的响应，我会扫描其他配置、奇偶校验、波特率等等。我也检查反向A和B Lin。使用UTXIN和URXIV有效地交换软件中的A/B线。我想使用“和谐批准”的方式来改变这些位而不破坏和谐。当使用MLA时，我设置了比特并重新初始化UART。这是一个私有函数，不应该被应用程序直接调用。看起来，它们都调用了一个我不能看到的PLIB函数。



      以下为原文

    I find many of the Mode and STA register bits.
I have yet to find UTXINV and URXINV.
I use RS 485 communications.
Sometimes the A and B lines get connected in reverse.
If I do not get an expected response I scan for other configurations, parity, baud rate and so on.
I also check for reversed A and B lines.
Using UTXINV and URXINV effectively  swaps the A/B lines in software.
I would like to use a "HARMony approved" way to change these bits without breaking Harmony.
When using the MLA I set the bits and re initialize the uart.
At the moment it looks like I will have to modify


DRV_USART_LINE_CONTROL_SET_RESULT DRV_USART_LineControlSet
(
DRV_HANDLE handle,
DRV_USART_LINE_CONTROL lineControlMode
)

and

void _DRV_USART_HardwareSetup(USART_MODULE_ID plibID, DRV_USART_INIT * init)


despite the comment

Remarks:
This is a private function and should not be called directly by the
application.

It looks to me they both call a plib function I can not see into.