UARTE baudrates on nRF52

RE: UARTE baudrates on nRF52

Sigurd — Wed, 28 Sep 2016 10:17:59 GMT

What baudrate are you trying to set? The BAUDRATE register is set to 1Mega right after UARTE initialization?

RE: UARTE baudrates on nRF52

NewtoM — Wed, 28 Sep 2016 09:14:16 GMT

Thanks, Sigurd! Any ideas about the issue I mentioned in my comment above?

RE: UARTE baudrates on nRF52

Sigurd — Wed, 28 Sep 2016 07:42:17 GMT

The baudrate is actually calculated the same way for both UART and UARTE. The values calculated for UART (legacy mode) was done some time ago, but when they were calculated for UARTE, more accurate values where found.

The baud rate generator is too complex to be described by a simple equation, but the equation in the thread explaining the UART baudrate register will be a good approximation.

RE: UARTE baudrates on nRF52

NewtoM — Tue, 27 Sep 2016 13:36:21 GMT

BTW, it seems I cannot set any baud rate between (0x0F000000UL) /*!< 921600 baud (actual rate: 941176) */ and (0x10000000UL) /*!< 1Mega baud */. As soon as I set something bigger than 0x0F000000UL, the baud rate becomes 1 MBaud.