Bug in nrf_serial_read

[Jchristf]

We have found what appears an easily reproducible bug in nrf_serial_read.

Reproduce as follows:

* PCA10040

* SDK 15.3

* SES

* Example project peripheral serial

* Change to Flow control disabled

* Change the timeout parameter on nrf_serial_read to 0 (is 1000)

Now when you do the echo loop occasionally you will see random characters.

I cant see any reason that a zero timeout shouldnt work..?

[Jørgen Holmefjord]

Hi,

occasionally you will see random characters

Can you give an example?

Do you send anything to the board from another device, or do you connect TX to RX?

Best regards,
Jørgen 

[Jchristf]

No, it is complete reproducible just with the standard peripheral/serial project in the SDK.  As you know that simply does an echo back of the characters you type in a terminal connected to the usb port of the PCA10040.

So if you try the example project, you will see that it works as it comes in the SDK, but by simply making the 2 changes I list above (remove flow control and set timeout to 0), random characters will occur as you type and echo at slow speed.

It cant be overrun condition, since it is just slow typing at 115200 and under that condition flow control should not be needed.  

[Jchristf]

Anything further I can provide to help u reproduce this bug?