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Problem using UART

Other Parts Discussed in Thread: CC2540

Hi

I am trying to use USART0 as UART in cc2540

But when i try to use HalUARTWrite() it fails.

The problem is it works excellent when i disable power saving but when I enable power saving this functions writes nothing over UART.

P.S. I am using Realterm to communicate over UART and the baudrate is 57600 with no flow control used.