ADAU1701 not programming?

Hello,

You will not be able to program the part using a EEPROM programmer and an Arduino. You can read in the EEPROM contents but you cannot change it and expect it to work.

You will have to invest in a USBi interface and download SigmaStudio. At that point you will have to create your own program because you cannot de-compile the Shure program. This is to protect the investment that Shure made in creating the program. There is also a lot more in the hardware that you will need to know to properly program the DSP. So my suggestion is to invest in an EVAL-ADAU1701 evaluation board and start learning how to program these DSPs. Then design your own system around it and this way you will have control over every aspect of the design.

Thanks,

Dave T

Dear Dave,

Thank you for the response. So if im understanding you correctly the only way to programm the eeprom of the adau1707 is using a usbi converter.

I was wondering how the elektor board is working. Because they programm the eeprom with an arduino using the hex file created by sigmastudio.

I thought that should also be possible with the sure board. I already ordered the usbi board but it did not arrived yet. Also my customers would like to know if there is a possibility for programming the eeprom with an arduino or something else.

And than use the dsp afterwards as a stand alone device.

But can i conclude out of your message that that is simply impossible?

Hello marijnsp,

The EEPROM is simply sitting on the I2C bus and so is the ADAU1701. The ADAU1701 will not do anything to stop you from programming the EEPROM. The ADAU1701 will be a master after powering up. I am pretty sure it will try three times to find an EEPROM with a valid program in it and if it does not then it will revert to being a slave on the buss. You can look at the SCL and SDA lines to see if they are being pulled down. They should not be pulled down.

So then you can program the EEPROM with anything you want. The point I was making is that you cannot modify a program or piece together a program using data in a hex file. You have to create the hex file in SigmaStudio then dump the program into the EEPROM. You can program the EEPROM using SigmaStudio if you like but you can use any other programmer. Like I said, if the 1701 is done trying to boot off of the EEPROM then it will release the buss. The other way to do this is if you can change the selfboot pin to take the 1701 out of selfboot mode. Then it will never try to take over the buss. It will be a slave from power up.

So the only way to write a program for the 1701 is by using SigmaStudio. Once you have a hex file compiled then load it in any way you can. I am wondering if the write protect may be an issue? it does have the feature where if you lower the WP pin in the 1701 it will disable the selfboot and allow you to program the EEPROM. What is happening to the WP pin when you are trying to program?

Dave T

Hi Marijnsp,

first, something looks strange in your teraterm log. If you just have a talkthru program, the DSP program should be almost empty. With SigmaDSP, an empty program is filled with 0x00 00 00 00 01 codes (the NOP instruction for the SigmaDSP), since the DSP has no idle mode and must run the 1024 instructions for every sample. SO it looks like it's not the correct HEX file which is downloaded in the EEPROM.

The second thing you have to know is that the WP pin must be pulled down when you want to program the I2C EEPROM (whatever you use the USBi or any other programmer). This however shall not change the EEPROM content you see from the log, so the first point shall be checked first.

Last point: make sure that your I2C programmer handles I2C bus contention properly. The USBi does this perfectly, but many low cost I2C programmers decide they are the only bus master and they don't check if a device ties the bus to signal it's occupied (don't forget that I2C is a multi-master bus by definition). In that case, there will be a bus error and the EEPROM will never be programmed.

Benoit

HI BenKB and Dave,

Thank you for the quick response and my apologies for my late response.

I measured the SDA, SCL they are both high.

I also measured the WP and it is low.

I guess something is going wrong with the programming using teraterm. But the one million dollar question is what.

It seems not to programm any good.

I guess ill just wait for the usbi, just to make sure this board just isnt defective.

Kind regards,

Marijn