UART has dedicated pins which are shown as green squares when assigning in pins view. There are only few choices depending on which SCB you choose. Try unlocking your pins and let the fitter choose a valid combination.
Hi Bob , according to my hardware design P4 and P4 are provided for uart .
I have used psoc creator for code generation for testing purpose
Also i want to know how to choose SCB , in psoc creator using drag and drop their is no control for that
as till i know .
Can you please post your complete project or a shortened version that shows the error so that we all can have a look at all of your settings. To do so, use
Creator->File->Create Workspace Bundle (minimal)
and attach the resulting file.
This is because the SCB is not implemented in that PSoC 4100S devices.
The CY8C4146LQS-S433 device has three SCB blocks and the device CY8C4125LQS-S433 has two SCB blocks. The difference between these devices is if the SCB block is implemented or not.
You can see the P4 is not listed in the drop down list because P4 cannot be used for UART.