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Though the code looks fine, there could be other problems in device configuration. Here are some points to check.
1. Check if the TX signal is routed from the UART_TX to a pin through the proper Row output and Global nets.
2. Check if the TX pin of the PSoC is configured as Strong drive
3. Check if the ClockSync parameter of the UART is set to SyncToSysClk. If this is accidentally set to UseSysClkDirect, then the UART will not work at the desired baud rate.
4. Check if the TX pin goes through a UART level transmitter and is properly connected to PC. You may also want to check the signal on TX pin using an oscilloscope.
Are you receiving any data on hyper terminal?
If you are trying this on cy3210, take care of jumper settings, look into schematic.