This application illustrates how to force the parity bit on XScale serial transmissions to a specific level (StrongARM systems don't support fixed parity, so the parity level will remain fixed). It transmits a byte several times per second, toggling the parity bit each time.
On an oscilloscope, you will see the RS-232 level drop for one bit at the start of the byte's transmission. You will then see that the parity bit toggles at the end of the transmission.
Status information from the application is displayed on the debug port. The application runs for five minutes.
ForceParity.exe in this ZIP file was compiled with eVC 3.0.