RTS cannot be controlled by individual serial tools (EUB-68)

[HoGC]

使用ComTool无法控制rts，但是可以控制dtr
使用CH340则是正常的
不只是ComTool，我也还在其他串口工具也发现这个问题
希望修复这个兼容性问题

[dobairoland]

Raw translation:

It is possible to control DTR with ComTool but not RTS. This is possible with CH340. The same issue is present with other serial tools as well.

[dobairoland]

Hi @HoGC. Can you please describe what do you want to achieve? Are you talking about changing RTS/DTR for the host or the target MCU?

[HoGC]

@dobairoland Yes, I need to use RTS to restart MCU

[dobairoland]

I see. I'm sorry for the inconvenience. When a target MCU is connected through serial interface then we consider it to be a dedicated channel between the bridge and the target. Therefore we don't support at the moment of interfering with the RTS & DTR signals.

The reason is that we have to support several scenarios (monitoring, UART & USB & mass storage flashing, debugging, ...) so this simply is not a priority. But we can look into this later....