Author Topic: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!  (Read 649 times)

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Offline ali_asadzadeh

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Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« on: May 03, 2020, 01:58:39 pm »
Hi,
Finlay my first run PCB's came from china and I managed to solder the GW2AR-LV18QN88C8/I7 and test the chip the first blinky! every thing is working as expected, also I have connected pin 56 and 57 of the FPGA to some IO that I need, but the place and route complains about the current location is useless! |O is there any workaround this or I am stuck to redesign the PCB! :'( :'( :'(
I'm a Digital Expert from 8-bits to 64-bits
 
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Offline ali_asadzadeh

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #1 on: May 04, 2020, 07:01:04 am »
I have found the solution! >:D
you need to check these options, so it would be used as regular IO
I'm a Digital Expert from 8-bits to 64-bits
 

Online dmendesf

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #2 on: May 09, 2020, 07:24:17 pm »
Nice. Can you tell where you bought this FPGA? I'm trying to source some Gowin FPGAs to test but without success.
 
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Offline ali_asadzadeh

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #3 on: May 10, 2020, 05:58:06 am »
Quote
Nice. Can you tell where you bought this FPGA? I'm trying to source some Gowin FPGAs to test but without success.
They are in all usefull, I think they can easily replace spartan 6 devices, with much lower prices.
I'm a Digital Expert from 8-bits to 64-bits
 

Online dmendesf

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #4 on: May 10, 2020, 03:02:09 pm »
You're just making me more hungry... Where you got them?
 

Offline ali_asadzadeh

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #5 on: May 11, 2020, 06:01:10 am »
Contact them directly, they will guide you to a sales person.
I'm a Digital Expert from 8-bits to 64-bits
 

Online dmendesf

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #6 on: May 12, 2020, 03:35:03 am »
Even for samples? ( Paid, of course)
 

Online blueskull

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #7 on: May 12, 2020, 03:57:49 am »
Even for samples? ( Paid, of course)

How many do you need? I once worked with those devices back when LCSC carried them, and I ordered 10 of those QFN88 w/ 64Mb SDRAM version (the exact one OP uses), and I used 1.

I can spare the rest 9 of them at the cost they have costed me, which is around $10 each plus shipping.
 

Online dmendesf

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #8 on: May 13, 2020, 12:31:19 pm »

I PMed you about that.

Even for samples? ( Paid, of course)

How many do you need? I once worked with those devices back when LCSC carried them, and I ordered 10 of those QFN88 w/ 64Mb SDRAM version (the exact one OP uses), and I used 1.

I can spare the rest 9 of them at the cost they have costed me, which is around $10 each plus shipping.
 

Online blueskull

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #9 on: May 13, 2020, 12:36:18 pm »
I PMed you about that.

Yes, I saw that. Give me some time to find a reshipper. Electronics, chemical powers and prescription drugs or even glasses are prohibited from exporting without a license. To workaround it without a license, I need a licensed reshipper. Those services are cheap and usually cheaper than me to ship it directly anyways, but I need some time to contact one.
 

Online dmendesf

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #10 on: May 15, 2020, 04:42:23 am »
I've used a company called yoybuy in the past to buy things for me in Taobao. Maybe you can sell to them and they sell to me?

I PMed you about that.

Yes, I saw that. Give me some time to find a reshipper. Electronics, chemical powers and prescription drugs or even glasses are prohibited from exporting without a license. To workaround it without a license, I need a licensed reshipper. Those services are cheap and usually cheaper than me to ship it directly anyways, but I need some time to contact one.
 

Online soFPG

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #11 on: May 19, 2020, 07:46:20 pm »
I am also looking for Gowin parts (but the much simpler GW1N-1) but I am not able to find them anywhere. Not even on taobao, 1688 etc.  :-//
 

Online blueskull

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #12 on: May 20, 2020, 01:50:19 am »
I've used a company called yoybuy in the past to buy things for me in Taobao. Maybe you can sell to them and they sell to me?

I found another one. I'll PM you with more info.
 


Online dmendesf

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #14 on: May 21, 2020, 03:20:27 am »

Ok, waiting for it. How did you program them? FTDI?
I've used a company called yoybuy in the past to buy things for me in Taobao. Maybe you can sell to them and they sell to me?

I found another one. I'll PM you with more info.
 

Offline ali_asadzadeh

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #15 on: May 21, 2020, 05:59:13 am »
blueskull, Did you manage to config the parts using a MCU? if so is your project open source?
I'm a Digital Expert from 8-bits to 64-bits
 

Online blueskull

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #16 on: May 21, 2020, 06:33:31 am »
Ok, waiting for it. How did you program them? FTDI?

blueskull, Did you manage to config the parts using a MCU? if so is your project open source?

I didn't manage to program it, despite the JTAG spec is now published by Gowin.

My board puts the FPGA in reset mode, then control the SPI pins directly to write to the flash, then release SPI pins and allow FPGA to boot normally from the flash.
 

Offline ali_asadzadeh

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #17 on: May 21, 2020, 08:11:27 am »
Quote
My board puts the FPGA in reset mode, then control the SPI pins directly to write to the flash, then release SPI pins and allow FPGA to boot normally from the flash.
That's great too, you mean you pulldown the Reconfig Pin and access the SPI flash?
I'm a Digital Expert from 8-bits to 64-bits
 

Online blueskull

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #18 on: May 21, 2020, 08:12:42 am »
Quote
My board puts the FPGA in reset mode, then control the SPI pins directly to write to the flash, then release SPI pins and allow FPGA to boot normally from the flash.
That's great too, you mean you pulldown the Reconfig Pin and access the SPI flash?

Yes.
 
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Online dmendesf

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Re: Gowin AR (GW2AR-LV18QN88C8/I7) dual mode pins!
« Reply #19 on: May 21, 2020, 10:27:32 am »
Nice to know, thanks.
 


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