u, -unlock unlock the flash REGION as a comma-separated list
l, -lock lock the flash REGION as a comma-separated list t, -bor no brownout reset if BOOL is 0 īrownout reset is on if BOOL is 1 c, -bod no brownout detection if BOOL is 0 īrownout detection is on if BOOL is 1
#Atmel usb driver download windows 7 serial
p, -port=PORT use serial PORT to communicate to device ĭefault behavior is to auto-scan all serial ports v, -verify verify FILE matches flash contents r, -read read SIZE from flash and store in FILE w, -write write FILE to the flash accelerated when # verify the write, and set boot from flashīossac -r0x10000 image.bin # Read 64KB from flash and store in image.bin The help for BOSSA command line is shown below.īasic Open Source SAM-BA Application (BOSSA) Version 1.2īossac -e -w -v -b image.bin # Erase flash, write flash with image.bin, A big thanks to Atmel for generously providing evaluation boards to test on for the SAM3S and SAM3U.īOSSA is also available in a command line version that enables one to quickly program devices from the command line or to integrate BOSSA into automated scripts. You can help make BOSSA better either by reporting results for untested devices or by donating hardware to help us test them. The matrix below shows the current level of testing. BOSSA also does not need to be installed into the operating system so you can freely copy and run it without having to worry about an installer.īOSSA communicates with the SAM-BA boot loader running on the SAM device via either a RS-232 port connected to the SAM device's debug serial port or for SAM devices that support USB, over a USB CDC virtual serial port.īOSSA supports all of Atmel's known flash-based SAM devices but some specific devices and device families have not been tested. BOSSA is a single, self-contained executable that is a couple of MB in size. A default installation of the 2.10 version of SAM-BA consumes 76MB of storage space across 2,037 files. Versions of BOSSA are available for Windows, Linux, and Mac. BOSSA leverages the wxWidgets cross-platform framework and thus is easily ported to any of the numerous platforms available for wxWidgets.
SAM-BA is available only for Windows and Linux but not for any other platforms. BOSSA by contrast is a native application and runs reliably in all versions of Windows from Windows 2000 on up for both 32-bit and 64-bit versions. It also doesn't run well with 64-bit versions of Windows. It works fairly well under Windows XP but there are a lot of reports of crashing or locking up on Windows Vista and Windows 7. SAM-BA is a complex application built on top of a TCL/TK scripting engine. So long as one develops a custom board with a crystal and I/O connections capable of communicating with SAM-BA, BOSSA can reliably program the flash without having to worry about external device conflicts. BOSSA is focused solely on programming the flash inside of the SAM device and so is independent of the board's external devices. Sometimes, one can get away with using one of the evaluation kit configurations if it is similar to a custom board but other times not since custom external devices could cause a conflict. It is a complex task with little documentation to modify SAM-BA to support custom boards. SAM-BA ships with support for all of Atmel's evaluation kits but does not provide generic configurations for other boards. BOSSA strives to provide a simple interface with just the basic functionality necessary to program the SAM device's internal flash memory. Because of this, SAM-BA's interface can be confusing and intimidating for someone getting started with microcontrollers or for someone not well versed in hardware. SAM-BA tries to be the Swiss army knife of utilities by programming all kinds of memories and external devices attached to a SAM microcontroller. What's wrong with using SAM-BA? Well, there are several reasons to consider an alternative. BOSSA is an acronym for Basic Open Source SAM-BA Application to reflect that goal. The motivation behind BOSSA is to create a simple, easy-to-use, open source utility to replace Atmel's SAM-BA software. BOSSA is a flash programming utility for Atmel's SAM family of flash-based ARM microcontrollers.
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