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write usart register "US_RTOR" but no change

Posted: Fri Nov 25, 2016 5:26 am
by leo.ni
Hi,all! i want to set register "US_RTOR" of usart1 as this "usart->US_RTOR = US_RTOR_TO( 8 * 4);" but it's value always zero. The register is W/R. How to do this ?Thanks!

Re: write usart register "US_RTOR" but no change

Posted: Mon Nov 28, 2016 9:45 pm
by blue_z
leo.ni wrote:it's [sic] value always zero. The register is W/R.
Peripheral registers that do not respond properly are usually an indication of a disabled peripheral, i.e. its peripheral clock has not been enabled in the Power Management Controller.

Regards