I'm using CYBT343026 to do an applicaion:A2DP and BLE.
I use P24 as PUART TX,and P25 as PUART RX.see the picture above.
There is a issue that when it cold start,RX does not work,TX works.After I reset it,both works.
I tried in the demo appplication ‘hal->puart’，it has the same issue.
1) In your circuit, what is connected on pin 3 (RESET_N) of the module?
2) Also how you are supplying the power to the module, can you measure the power supply rise time? to the module or just observe on the scope and share observations.