xbee with stm32 little question

[Loodan22]

I am doing xbee communication with stm32, I am sending and receiving data, there is no problem, but I cannot see message on the serail monitor of stm32. (but it appears in debug process) why?

[Loodan22]

using POLL method for uart

[Tesla DeLorean]

Not at all clear from your presentation how you've implemented any of this forward / tunnelling, or how you might expect this to be debugged / diagnosed.

The Rx and Tx can occur concurrently. If I were in a polling loop, I'd probably implement it with a FIFO / Circular buffer, allowing me to monitor the respective TXE and RXNE of the USARTs I wanted forwarding to each other, and allowing for elasticity where the rates or bursts of data are not identical.