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[/] [gecko3/] [trunk/] [GECKO3COM/] [gecko3com-fw/] [gecko3com.iic] - Rev 33

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33 fixed in the bit file header analyse function. it was not possible to handle bit files (configure fpga, store into spi flash) when using USB 1.1 conections.

disabled the debug define in the firmware Makefile

removed the chipscope file from the GECKO3COM_simple project to get the logic utilisation of our core only.		 nussgipfel 5403d 22h /gecko3/trunk/GECKO3COM/gecko3com-fw/gecko3com.iic
29 some bugfixes and here and there some comment cleaning nussgipfel 5415d 23h /gecko3/trunk/GECKO3COM/gecko3com-fw/gecko3com.iic
28 switched to work on the v1 production GECKO3main. the timing is a big issue
with the prototype system. the cabeling and the possibly bad influence of the
prototype board layout makes it impossible to run this core in sync with the
host transfers.

out transfer is fully working. always in sync with the transfers and reads all
tmc headers correctly.

abort handling in the core works as well. there were some fixes needed in the
firmware, not all IN FIFO buffer where flushed.

a lot of work was done for the IN transfer (fpga to pc). the in transfer
handling in GECKO3COM_simple_test.vhd is finished.

the GECKO3COM_simple_datapath/fsm is finished.

there is still an issue left but I think the problem is in the gpif_com
module. for long IN transfers, we still not receive the correct number of bytes.

it works great for all sort of short transfers.


Here I present a time measurement to show the achieved message throughput:
(Response message was 1 byte, total with header and align bytes was 16 byte)

time for i in {0..100000}; do cat /dev/usbtmc1 > /dev/null; done

real 5m45.706s
user 0m27.498s
sys 4m52.676s

This shows that we can read data from the fpga with a rate up to 290 Hz		 nussgipfel 5418d 00h /gecko3/trunk/GECKO3COM/gecko3com-fw/gecko3com.iic
21 system is fully working and tested with big files over 4 Gbyte. there were some smaller bugs and glitches which caused
sometimes a deadlock. they are fixed now.

one was because the fx2 reads the done pin sometimes wrong during a long data
transfer. I don't now if this is because of crosstalk on my prototyping system or fpga internal weakness.
a simple debouncing (read again after 40 ms) did the trick.

changed firmware version to 0.5rc0, basically all features targeted for 0.5 are done.		 nussgipfel 5447d 00h /gecko3/trunk/GECKO3COM/gecko3com-fw/gecko3com.iic
20 basic synchronous IN (fpga to host) transfer works.

detail changes:
-the scpi command "fpga:data" checks now, if the fpga is configured before it changes the context to the fpga. if the fpga is
not configured, it returns an "EXECUTE ERROR".
in the same way, the main_loop checks if the fpga looses his configuration. it disables the GPIF, switches the context back
to the fx2 if so. this is mainly to avoid undeterministic behaviour if you reconfigure the fpga via jtag.

-introduced the new signal "EOM" end of message from the "usb tmc protokoll interpreter" to the gpif_com module

-changed the GPIF waveform for the FIFO IN transfer to the new scheme.

-implemented the same waveform into the gpif_com_fsm.vhd. works well together.

-bugfixed the gpif_com_test.vhd. sends the new EOM signal, the response message generator works now as it should.

-added the missing AUTHORS README and COPYING (license) files to the core directory.		 nussgipfel 5447d 23h /gecko3/trunk/GECKO3COM/gecko3com-fw/gecko3com.iic
19 found a pinning error in the series production documentation. fixed in the wiki and the core.

really stable host to fpga data transfer achieved. several time over 4Gbyte transfered. including switching to fpga to
host GPIF waveform to listen to possible fpga transfer tries. but fpga to host transfers still not finished.

the correct length of data is read from the gpif_fsm now. still untested data consitency when data flow throtling occours.
need bigger buffers to test this. will be done on a higher level.		 nussgipfel 5456d 00h /gecko3/trunk/GECKO3COM/gecko3com-fw/gecko3com.iic
18 I achieved now stable OUT transfers (from the PC to the FPGA) with working throtling (when the FPGA consumes data slower than the host delivers).
The basics needed for this are implemented in the FPGA like handshaking with the FX2 and clock domain transistion from the Interface clock to the user defined system clock.

in the gpif_com_test.vhd is a message rom, containing a prepared answer message to generate an IN transfer. this is needed for the next step.		 nussgipfel 5459d 09h /gecko3/trunk/GECKO3COM/gecko3com-fw/gecko3com.iic
16 release candidate 3: 0.4rc3

fixed a bug in the get_capabilities function. was fixed before but it was back again...

removed one file from the build process, that shouldn't be in the subversion.		 nussgipfel 5474d 05h /gecko3/trunk/GECKO3COM/gecko3com-fw/gecko3com.iic
15 this is the release of version 0.4rc2

we provide now the downloadable *.iic file of the current version in the repository at the convinient place
"gecko3com-fw/firmware/"		 nussgipfel 5487d 05h /gecko3/trunk/GECKO3COM/gecko3com-fw/gecko3com.iic

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