Hi,
I have a Teensy LC connected to my Openwrt router via USB and I am reading serial data from ttyACM0. However after a few seconds of receiving data it stops and the following error messages show in dmesg
[ 91.457149] random: crng init done
[ 239.642080] usb 1-1: clear tt 1 (9044) error -71
[ 239.749078] usb 1-1: clear tt 1 (9044) error -71
[ 239.859080] usb 1-1: clear tt 1 (9044) error -71
[ 239.969077] usb 1-1: clear tt 1 (9044) error -71
[ 240.079078] usb 1-1: clear tt 1 (9044) error -71
[ 240.188076] usb 1-1: clear tt 1 (9044) error -71
[ 262.391077] usb 1-1: clear tt 1 (1043) error -71
[ 262.499080] usb 1-1: clear tt 1 (1043) error -71
[ 268.822094] usb 1-1: clear tt 1 (1043) error -71
[ 268.938113] usb 1-1: clear tt 1 (1043) error -71
[ 269.049079] usb 1-1: clear tt 1 (1043) error -71
[ 269.159080] usb 1-1: clear tt 1 (1043) error -71
[ 269.300078] usb 1-1: clear tt 1 (1043) error -71
[ 269.409087] usb 1-1: clear tt 1 (1043) error -71
[ 269.519078] usb 1-1: clear tt 1 (1043) error -71
[ 269.629080] usb 1-1: clear tt 1 (1043) error -71
[ 269.739081] usb 1-1: clear tt 1 (1043) error -71
[ 269.889080] usb 1-1: clear tt 1 (1043) error -71
[ 465.903181] cdc_acm 1-1.2:1.0: failed to set dtr/rts
[ 465.976082] usb 1-1: clear tt 1 (0040) error -71
[ 466.057169] usb 1-1: clear tt 1 (9044) error -71
[ 466.137174] usb 1-1: clear tt 1 (0040) error -71
[ 466.227198] usb 1-1: clear tt 1 (9044) error -71
[ 466.337176] usb 1-1: clear tt 1 (1043) error -71
[ 466.410514] usb 1-1: clear tt 1 (9044) error -71
[ 466.497171] usb 1-1: clear tt 1 (1043) error -71
[ 466.567130] usb 1-1: clear tt 1 (9044) error -71
[ 466.678081] usb 1-1: clear tt 1 (9044) error -71
[ 466.789080] usb 1-1: clear tt 1 (9044) error -71
[ 466.899088] usb 1-1: clear tt 1 (9044) error -71
[ 467.009079] usb 1-1: clear tt 1 (9044) error -71
[ 467.119081] usb 1-1: clear tt 1 (9044) error -71
[ 467.242080] usb 1-1: clear tt 1 (9044) error -71
[ 467.349074] usb 1-1: clear tt 1 (9044) error -71
[ 467.459061] usb 1-1: clear tt 1 (9044) error -71
[ 467.615083] usb 1-1: clear tt 1 (9044) error -71
[ 467.728074] usb 1-1: clear tt 1 (9044) error -71
[ 467.839081] usb 1-1: clear tt 1 (9044) error -71
[ 467.949078] usb 1-1: clear tt 1 (9044) error -71
I've read that the Teensy boards need a udev rule but Openwrt doesn't have udev (only hotplug), so assuming this is the issue how do I get around it? Any help would be much appreciated!