Hello guys,
I'm using an OLIMEX AT91SAM7S256 Header board with 18,432MHz crystal. In
my OpenOCD config script I have set the JTAG speed to 2000kHz while
using the OLIMEX USB-OCD JTAG interface. Here ist my interface config
for OpenOCD
interface ft2232
ft2232_device_desc "Olimex OpenOCD JTAG"
ft2232_layout olimex-jtag
ft2232_vid_pid 0x15ba 0x0003
adapter_khz 2000
The CPU config script has an event-script for reset-init event to setup
the pll and change the JTAG Speed to 6000kHz.
target create $_TARGETNAME arm7tdmi -endian $_ENDIAN -chain-position
$_TARGETNAME -variant arm7tdmi
$_TARGETNAME configure -event reset-init {
echo "Reset..."
soft_reset_halt
# RSTC_CR : Reset peripherals
mww 0xfffffd00 0xa5000004
# disable watchdog
mww 0xfffffd44 0x00008000
# enable user reset
mww 0xfffffd08 0xa5000001
# CKGR_MOR : enable the main oscillator
mww 0xfffffc20 0x00000601
sleep 10
# CKGR_PLLR: 96.1097 MHz
mww 0xfffffc2c 0x00481c0e
sleep 10
# PMC_MCKR : MCK = PLL / 2 ~= 48 MHz
mww 0xfffffc30 0x00000007
sleep 10
# MC_FMR: flash mode (FWS=1,FMCN=73)
mww 0xffffff60 0x00490100
sleep 100
echo "Change speed"
adapter_khz 6000
}
But I get only download speeds of 1kB/sec. Why is this so slow? How can
I speed up the download?
My start-script from Eclipse (Zylin Embedded CDT) looks like this:
init-commands:
target remote localhost:3333
monitor reset_halt
monitor gdb_breakpoint_override hard
monitor arm7_9 dcc_downloads enable
monitor reset init
monitor sleep 500
monitor poll
monitor flash probe 0
monitor flash erase_sector 0 0 15
load
I can't find any mistake in configuration.
best regards,
Andy
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