time out when DFU fail

RE: time out when DFU fail

MR.liu — Fri, 28 Oct 2016 06:44:16 GMT

thank your for help，You solved my problem very well.

RE: time out when DFU fail

bjorn-spockeli — Fri, 28 Oct 2016 06:42:05 GMT

YEs, in a connection the maximum payload of a BLE packet is 20 bytes, so an image of 127 kB will be about 6503 packets. The dfu timer will be reset when a data packet is received, so it will not timeout unless the connection is broken.

RE: time out when DFU fail

MR.liu — Fri, 28 Oct 2016 03:22:47 GMT

How much size is the packets which can trigger peer activity? for example 20 byte?my application DFU upgrade package is 127kB, how many times peer activity triggered?just once?

RE: time out when DFU fail

MR.liu — Fri, 28 Oct 2016 02:31:19 GMT

It is to said that under normal circumstances waiting for peer activity is far less than the 30S? 30s timeout to fully meet system requirements of transmission?

RE: time out when DFU fail

bjorn-spockeli — Thu, 27 Oct 2016 11:49:44 GMT

No, i do not think so since the bootloader is waiting for peer activity, i.e. waiting for the start packet, the init packet or a data packet. And as you say the dfu timer will be reset everytime one of the packets above is received.

RE: time out when DFU fail

MR.liu — Thu, 27 Oct 2016 07:15:16 GMT

What the program is doing in the time of time out? Why the default is 120s？All the steps of DFU is no more than 30S?When I changed the timeout to 30S, could it be possible to trigger a timeout before dfu_timer_restart()?In this case, DFU will always fail.

RE: time out when DFU fail

bjorn-spockeli — Thu, 27 Oct 2016 06:20:56 GMT

No, it should not lead to any unknown errors.

RE: time out when DFU fail

MR.liu — Wed, 26 Oct 2016 07:18:11 GMT

This will not lead to some unknown error?

RE: time out when DFU fail

bjorn-spockeli — Wed, 26 Oct 2016 07:10:51 GMT

We do not have a specified minimum time timeout interval, but I think that you should be able to set it to 30s without running in to any issues. Generally, I would just test som different values and if you dont see any issues, then you're ok.

Best regards

Bjørn