Best aproach to share/switch a UART?

[Fernando Mercado]

Hi there, right now I'm working with an application that allows me to collect data via UART from several sensors (two), and I also I have a SIM module that allows me to communicate via UART.

But I'm facing the problem that I'm just using a single UART to achieve all of these tasks.

But in some cases, I can't use the UART when I need it at a specific moment because it has been acquired for another task.

Then, what could be the best approach to sharing or switching a single UART beyond more a timeout?

Whatever advice you leave, it'll be received.

Thanks.

[Susheel Nuguru]

Try this new fixed code where I tried to add the mutex like I suggested to your code. It also makes the logic simpler. I have not compiled it but want to show you the logic how it is done. You are very capable of fixing the compiler issues.

For some reason, I am unable to upload files, So I will try to upload files in a different comment