Hi everyone, I'm working on a USB bootloader for the SAM3U chip and I'm running into issues. To get readers up to date, I'm using LUFA's USB HID Bootloader PC-Application to run the host side (obviously with a couple changes) on my Mac. I also had a USB CDC Bootloader finished (using XMODEM to transfer the bin files) and running. When I'm transferring the hex file information from my host PC application, the SAM3U seems to be freezing. As of right now, I'm not even concerned about writing it to flash but why it isn't transferring correctly. Bfd2 Crack. Things that are happening right now: 1) Read intel hex file generated by Atmel Studio 6. 2) If the file is valid and 'readable', write the hex file information into a temporary variable type char buffer.

AVR Bootloader and Programmer. AVR Bootloader. Atmel's application note AVR109 describes a. To adapt the speed of the PC to the bootloader.

AVRUSBBoot - USB bootloader for Atmel AVR controllers AVRUSBBoot is a bootloader for the Atmel AVR controllers. A C++ tool for downloading hex files is provided. ATMega Bootloader. Posted by danni on Sun. All sources available so it shoud be possible to compile the PC tool also under Linux. AVR ATmega Xmega Bootloader Source Code with PC GUI Tool.

The buffer is of size 0x100000 (because addresses 0x00000-0x80000 are for the Internal Boot Memory, 0x20000 for the flash). Vmware Workstation 10 For Linux 32 Bit. 3) Open target SAM3U USB Device. If found, continue; otherwise, exit the application. 4) Now start writing our data we stored in the buffer. We read a block size of 64 bytes (as our endpoint supports 64 byte size).

5) When USB device receives report, SAM3U will store this data (of size 64 bytes) into a temporary buffer. Once the temporary buffer has filled 256 bytes (because this is the SAM3U's flash page size), write to flash. 6) Continue writing until reach the end address. It never reaches #6 though; it freezes half way through and always at the same 'address' read.

I've tried to debug it on the SAM3U side but I don't see an endpoint hanging or returning an unsuccessful transfer. I've also dumped the SAM3U's report buffer and I'm correctly getting the hex and address to write it. I'm guessing an endpoint REALLY is hanging but I'm not sure where to look at this point. All I know is that when it does freeze, the PC application tries to send over a HID report but cannot continue because the USB device hasn't 'received' it yet. Also, if I try to run the PC application again after terminating the original application download, it will freeze on its first transfer. Tips on how to debug this more thoroughly or know why this is happening? EDIT: Sorry a little more information; On the PC side, it freezes on IOHIDDeviceSetReport() function.

ALSO, I've just run lldb on my PC application and Mac sends me a mach_msg_trap error after I wait a long time. I'm going to read up more on this too. EDIT2: So I just debugged a little more and on the SAM3U side. My USB set feature report callback stops after 512 bytes has been transferred over. I don't see any busy jobs or anything.