CASE 1: USB communications on the bus (iPadPro M4 + iOS 18.3), until the bus stalled. 00> USBD Setup Received 00 05 02 00 00 00 00 00 00> Set Address 00> Prepare BufCtrl: [0] = 0xf400 [1] = 0x0000 00> buf_status = 0x00000001 00> Sync BufCtrl: [0] = 0x6000 [1] = 0x0000 00> Short packet on buffer 0 with 0 bytes 00> Completed transfer of 0 bytes on ep 80 00> USBD Xfer Complete on EP 80 with 0 bytes 00> 00> USBD Setup Received 80 06 00 01 00 00 08 00 00> Get Descriptor Device 00> Queue EP 80 with 8 bytes ... 00> Prepare BufCtrl: [0] = 0xf408 [1] = 0x0000 00> buf_status = 0x00000001 00> Sync BufCtrl: [0] = 0x6008 [1] = 0x0000 00> Short packet on buffer 0 with 8 bytes 00> Completed transfer of 8 bytes on ep 80 00> USBD Xfer Complete on EP 80 with 8 bytes 00> Queue EP 00 with 0 bytes ... 00> Prepare BufCtrl: [0] = 0x7400 [1] = 0x0000 00> buf_status = 0x00000002 00> Sync BufCtrl: [0] = 0xe000 [1] = 0x0000 00> Short packet on buffer 0 with 0 bytes 00> Completed transfer of 0 bytes on ep 00 00> USBD Xfer Complete on EP 00 with 0 bytes 00> 00> USBD Setup Received 80 06 00 01 00 00 12 00 00> Device 00> 00> 00> Queue EP 82 with 42 bytes ... 00> Prepare BufCtrl: [0] = 0xf42a [1] = 0x0000 00> buf_status = 0x00000010 00> Sync BufCtrl: [0] = 0x602a [1] = 0x0000 00> Short packet on buffer 0 with 42 bytes 00> Completed transfer of 42 bytes on ep 82 00> USBD Xfer Complete buf_status = 0x00000020 00> Sync BufCtrl: [0] = 0xa02a [1] = 0x0000 00> Short packet on buffer 0 with 42 bytes 00> Completed transfer of 42 bytes on ep 02 00> on EP 82 with 42 bytes 00> NET xfer callback <----CUTOUT-FOR-REGULAR-TRAFFIC-ON-THE-BUS-----------------> 00> NET xfer callback 00> USBD Xfer Complete on EP 80 with 0 bytes 00> buf_status = 0x00000004 00> Sync BufCtrl: [0] = 0x4008 [1] = 0x0000 00> Short packet on buffer 0 with 8 bytes 00> Completed transfer of 8 bytes on ep 81 00> USBD Xfer Complete on EP 81 with 8 bytes 00> NET xfer callback 00> Queue EP 81 with 16 bytes ... 00> Prepare BufCtrl: [0] = 0xf410 [1] = 0x0000 5 SECONDS AFTER ENTER INTO SLEEP MODE! (M4 iPad + iOS 18) 00> USBD Suspend : Remote Wakeup = 0 00> BUS RESET 00> USBD Bus Reset: Full Speed SINCE THIS MOMENT THE USB BUS STALLS!