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1
Trenz Electronic FPGA Modules / TE0720 I2C-bus to RTC
« Last post by dave74321 on Today at 05:27:26 PM »
I am using TE0720-03-1CFA modules.

The sda_in on the Zynq (CPLD_X5 to Zynq pin p22) is at logic '0' following boot of the Zynq (irrespective of boot from SD-Card or from JTAG). (The SDA line of the RTC is at logic '1').

This causes the software that I am using to hang (XIic_DynSend in xiix_l.c waits forever waiting for the bus to go busy).

Manually controlling the sda_out and scl_out I have found that if I toggle them both a few times the sda_in will go to logic '1' and from then on the software is able to use the I2C-Bus with the RTC fine.

The attached images show sda_out (yellow top trace), scl_out (blue middle trace) and sda_in (purple lower trace).

I would be interested to know what is in the CPLD if that is available?

Does the toggling of sda_out and scl_out sound like a okay solution or is there a better fix?

Thanks.
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Trenz Electronic FPGA Modules / Re: TE0720 FPGA module
« Last post by JH on Today at 03:14:29 PM »
OK, fine.
br
John
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Trenz Electronic FPGA Modules / Re: TE0720 FPGA module
« Last post by sonic on Today at 03:08:37 PM »
Done! It started working again!
Really Appreciate the help!  :)
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Trenz Electronic FPGA Modules / Re: TE0720 FPGA module
« Last post by sonic on Today at 02:43:41 PM »
No Actually, We bought TE0703 in early 2017.

And Which DIP settings do you want to set?

Should I set DIP settings to S2 ON and S3 ON? as this time it has to program on FPGA?

Thanks!
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Trenz Electronic FPGA Modules / Re: TE0720 FPGA module
« Last post by JH on Today at 02:19:32 PM »
Hi,
I'm afraid it is. Did you bough your TE0703 after some month 2017-10-13? If later, than this firmware was installed.
So TE0720 firmware is available on:
Program TE0720 CPLD with the Firmware description from TE0720 CPLD
and check, if 3.3V is available again.
br
John

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Trenz Electronic FPGA Modules / Re: TE0720 FPGA module
« Last post by sonic on Today at 02:09:10 PM »
Yes, We programmed TE0703 firmware and That was our goal.
We are not planning to change firmware on TE0720.
DIP settings were S2-2 to OFF and S2-3 to ON position. (According to this link https://wiki.trenz-electronic.de/display/PD/TE0720+CPLD+Firmware)

We were planning to program only, TE0703 carrier board cpld, With this firmware{ SC-PGM-TE703-02030405_CC0703S-02_20171013(CC703S_REV02).}

Maybe it looks like we accidentally programmed TE0720 CPLD with wrong firmware.

Can you please guide me how to program TE0720 CPLD with the original firmware, and what is the DIP settings should I follow in order to program it.

Thanks!

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Trenz Electronic FPGA Modules / Re: TE0720 FPGA module
« Last post by JH on Today at 01:12:57 PM »
Hi,
so at first you has reprogrammed TE0703 with new TE0703 firmware with this instructions:
With SC-PGM-TE703-02030405_CC0703S-02_20171013(CC703S_REV02), following DIP settings on TE0703 are possible:Than you has reprogrammed TE0720 CPLD with this instructions:You has select correct TE0703 DIP settings for both reconfigurations? Because TE0703 and TE0720 has same Lattice FPGA, so on Diamond is no different detectable.
And it doesn't work again on the TE0703 or on your custom carrier or on both?

br
John



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Trenz Electronic FPGA Modules / Re: TE0720 FPGA module
« Last post by sonic on Today at 12:52:52 PM »
I'm working on a custom carrier board, But before reprogramming it, I tried to reprogram TE0703 cpld
I used firmware from Trenz, which is SC-PGM-TE703-02030405_CC0703S-02_20171013(CC703S_REV02).
During programming
CPLD: 1200HC from Lattice
Port name: FTUSB0
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Trenz Electronic FPGA Modules / Re: TE0720 FPGA module
« Last post by JH on Today at 10:35:34 AM »
Hi,
at first, what was the reason to reprogram TE0720 CPLD?
Which firmware file did you used? Your own?
Which CPLD did you see as you reprogrammed the CPLD?

br
John
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Trenz Electronic FPGA Modules / Re: TE0720 FPGA module
« Last post by sonic on July 18, 2018, 07:52:45 PM »
Update:

It looks like I am not getting 3.3V on M3.3V on jumpers J5, J8, J9, J10. I cannot get the TE0720's SC CPLD to enable 3.3V on the TE0720.
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