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The internalflash applet drive the flash controller to progam the internal flash memory of the SAM MCU device.
The internalflash applet doesn't accept any parameter to be intialized.
The list of commands supported by the internalflash applet can be displayed with the following commands:
sam-ba -p <port> -d <device> -a internalflash -c help $ sam-ba -p serial -d samv71 -a internalflash -c help
The erase command resets to 0xFF a range of erase blocks. The size of those erase blocks is given in the product datasheet.
$ sam-ba -p serial -b samv71-xplained -a internalflash -c erase:help * erase - erase all or part of the memory Syntax: erase:[<addr>]:[<length>] Examples: erase erase all erase:4096 erase from 4096 to end erase:0x1000:0x10000 erase from 0x1000 to 0x11000 erase::0x1000 erase from 0 to 0x1000
The write and writeboot commands program data from a binary file into the internal flash pages. The blocks containing the pages to be programmed should be erased first with the erase command. Padding bytes are added to align programmed data to the page boundary. The page size is given by the product datasheet. Prior to what both commands do, the writeboot command also modifies the relevant unused ARM exception vector to store the size of the bootstrap binary, as required by the ROM code during the boot process.
$ sam-ba -p serial -b samv71-xplained -a internalflash -c write:help * write - write to memory from a file Syntax: write:<filename>:[<addr>] Examples: write:bootstrap.bin write bootstrap.bin to start of memory write:u-boot.bin:0x10000 write u-boot.bin at offset 0x10000 $ sam-ba -p serial -b samv71-xplained -a internalflash -c writeboot:help Syntax: writeboot:<filename> Example: writeboot:bootstrap.bin write bootstrap.bin as boot program at start of memory
The read command loads data from the internal flash into a binary file.
$ sam-ba -p serial -b samv71-xplained -a internalflash -c read:help * read - read from memory to a file Syntax: read:<filename>:[<addr>]:[<length>] Examples: read:firmware.bin read all to firmware.bin read:firmware.bin:0x1000 read from 0x1000 to end into firmware.bin read:firmware.bin:0x1000:1024 read 1024 bytes from 0x1000 into firmware.bin read:firmware.bin::1024 read 1024 bytes from start of memory into firmware.bin
The verify and verifyboot compare the data programmed in the internal flash with the content of a given binary file. Unlike the verify command, the verifyboot command ignores the actual value of the relevant unused ARM exception vector in the binary file and does as if the value were the size of the binary file.
$ sam-ba -p serial -b samv71-xplained -a internalflash -c verify:help * verify - verify memory from a file Syntax: verify:<filename>:[<addr>] Examples: verify:firmware.bin verify that start of memory matches firmware.bin verify:firmware.bin:0x1000 verify that memory at offset 0x1000 matches firmware.bin $ sam-ba -p serial -b samv71-xplained -a internalflash -c verifyboot:help * verifyboot - verify boot program from a file Syntax: verifyboot:<filename> Example: verifyboot:bootstrap.bin verify that start of memory matches boot program bootstrap.bin
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