Would DFU have timeout counting to prevent unexpected entering?

RE: Would DFU have timeout counting to prevent unexpected entering?

Tim Clark — Thu, 12 Mar 2015 05:19:54 GMT

Running into the same issue -- did you ever manage to find a solution?

RE: Would DFU have timeout counting to prevent unexpected entering?

Gil dePaula — Fri, 12 Sep 2014 01:25:57 GMT

Hi Ole, This 60-second limit is not enough for us. Our application is 48 kB & takes 35 seconds to upload. It should be enough, but the problem is that our iOs app does DFU like this: 1. Sends a command to the main application to jump to Bootloader. 2. The application does so (sets bit in the gpregret), and the Bootloader statrts. 3. Problem: Now we cannot start the upload yet because we have to "forget this device (the application device)" in iOS, connect to the "DfuTarg" device (which takes a few seconds to be visible) and finally start the upload, but this process takes a little more than ~30 seconds. .... So the total time is about 70 seconds ! I tried to increase the time here (#define DFU_TIMEOUT_INTERVAL APP_TIMER_TICKS(120000, APP_TIMER_PRESCALER) to 2 minutes (12 s) but the maximum it goes is about 65 seconds. (65535 ?) Bug? How do I increase it to 2 minutes? Thanks! Gil

RE: Would DFU have timeout counting to prevent unexpected entering?

Ole Morten — Tue, 28 Jan 2014 14:42:28 GMT

That's yes to both your questions. The bootloader uses a timeout of 60 s by default. Also, by default the bootloader is dual bank, meaning that the old application will not be deleted before the complete new application have succesfully been received.