UART Overrun Error after Reset

[oneguy]

Hi all,

I see there are similar questions posted on this forum, but none answers my question satisfactorily.

What I have:

• we use the nRF52 we use UART0 to
• transmit / receive data (totally
• straight forward circuit) we use the nrf_drv_uart driver plus our own event handler, as per Nordic example

What I experience:

• with the Softdevice S132 disabled, data transmission / reception works flawlessly
• with the S132 enabled, we experience more than not that UART0 is unable to receive data. Instead, overruns are reported (event->data.error.error_mask = 0x00000001)
• if the nRF52 starts up without overrun error, Tx / Rx works fine
• once I see overrun errors reported, I need to reset the device a couple of times before I get Tx / Rx back again.

What is your suggestion?

Thank you for your help M

[Susheel Nuguru]

Yes, when there is no error then it is event->data.rxtx.bytes represent number of bytes received in the buffer you provided. Also event.data.rxtx.p_data should be equal to &mRecvByte[0];

when there is error then it is event.data.error.rxtx.bytes represent number of bytes received in the buffer you provided. Also event.data.error.rxtx.p_data should be equal to &mRecvByte[0];

[oneguy]

Hi Aryan,

this seems to work, thank you