[En-Nut-Discussion] Cannot load Ethernut into Olimex sam7-ex256
Ivan Hamer
ivanhamer at yahoo.com
Sun Feb 22 16:46:17 CET 2009
I am using:
ethernut-4.6.4
default olimex-sam7-ex256.conf
yagarto toolchain
ARM-USB-OCD programmer
command to program:
> load_image d:\ethernut-4.6.4\nutapp-sam7x-gcc\events\events.elf
10832 byte written at address 0x00000000
236 byte written at address 0x00002a50
downloaded 11068 byte in 0.484375s
My events.map file has:
Name Origin Length Attributes
rom 0x00000000 0x0003c000 xr
ram 0x00200000 0x00010000 rw
*default* 0x00000000 0xffffffff
Is this correct for the rom setting (I thought this area started at 0x00100000)?
The flash info returned is:
#0: at91sam7 at 0x00100000, size 0x00040000, buswidth 4, chipwidth 0
#0: 0x00000000 (0x40000 256kB) protection state unknown
at91sam7 information: Chip is AT91SAM7X256
cidr: 0x275b0940, arch: 0x0075, eproc: ARM7TDMI, version:0x000, flashsize: 0x00040000
master clock(estimated): 53232kHz
pagesize: 256, lockbits: 16 0x0000, pages in lock region: 64
securitybit: 0, nvmbits(3): 0x0
I have tried SAM-PROG v2.4, but the flash button is always grayed out (even though SAM-BA v2.8 manages to connect).
Does the communication go through DRXD/DTXD pair or RXD0/TXD0 pair? I tried both with events, and both are mute. (RXD0/TXD0 works with Lynche's UART example, and DRXD/DTXD works with SAM-BA).
I am running out of ideas here and don't know what to try next... Any help is greatly appreciated.
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