Here is a patch for programming SPI Flash memories. Should also work with SPI EEPROMs.
This patch is rather large because "struct URJ_BUS_DRIVER" got 3 new functions:
write_start, enable, and disable. So, therefor I updated all of the existing
bus drivers to include these three functions. However, for the existing bus
drivers, these are essentially just noops.
urj_bus_area_t Now has a class parameter to indicate the type of bus the memory
is connected to. Each of the bus drivers has been updated to initialize this
parameter appropriately.
To use the new SPI bus driver works similar to the prototype bus driver. It
allows the user to specify the pins to use on the command line. It also allows
the user to specify the address size and data size. The default address width
is 16bits and the default data size is 8bits.
example:
initbus spimem NCS=SPI_CS_N SCK=SPI_CLK MOSI=SPI_MOSI MISO=SPI_MISO
AMODE=16 WIDTH=8
The AMODE and WIDTH are optional.
Now you can program the flash like you would any other flash memory.
example:
detectflash 0
flashmem 0 myfile.bin noverify
One other note. This patch also breaks apart the flash programming and
verifying into 2 separate functions. The flashmem command will still verify if
requested, however you can now also use the new "flashverify" command if you
just want to verify. The format of this command is identical to flashmem.
spi.diff.gz
Description: GNU Zip compressed data
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