[Bug Report] ADAU1467 Interface Write creates Self Boot failure

Question

Hi 
 Having spent many hours trying to understand what was going wrong, I now have a minimum project to demonstrate this failure. 
 Simply put, the existence of an Interface Write block prevents Self Boot. Take the following trivial example, the oscillator is simply to produce an output that tells me all is well, and the DC block is a substitute for my volume control GPIO configuration : - 
 
 If the Interface Write block is removed then 'Write latest compilation through DSP' works perfectly, and a tone can be heard. 
 With the Interface Write block in place Link Compile Download works perfectly, however 'Write latest compilation through DSP' appears to work ok, but doesn't produce a tone. 
 From earlier tests using SPI Read I can see that the Interface Write does successfully write to the correct EEPROM address when using Link Compile Download (The WriteAddress defined in the parameters) 
 I'm using I2C to connect to the board, and SPI EEPROM, functionally equivalent to the EVAL board from this perspective. 
 So, it looks like a bug to me, does anyone have a workround? 
 Thanks in advance 
 Jonathan 
 ADAU1467 Interface Write Tests 0.2.zip

DaveThib · Accepted Answer

Hello Jon, 
 
 OK, so here is a way to do it. It is a bit clunky but it will work around the problem for now. 
 
 1) Click link compile download on your project. 
 2) Click on the red "X" on the Capture Window to clear out all the data in the Capture window. 
 3) Go to the hardware config tab in SigmaStudio and right click on the DSP GUI and write latest compilation through the DSP. Click all the "OK to erase" and all the other warnings for writing to the EEPROM. 
 4) Now the capture window will be full of information. Scroll all the way to the top and click on the first entry. then scroll all the way to the bottom and "Shift-Click" on the last entry to highlight the entire list. ( If I remember correctly CTRL-A does not work in this window...) 
 5) Right click on the highlighted area and select "Add to Sequence" . It will look like this: 
 
 The Sequence window will open up just to the right of the Capture window. 
 Now when you click on the Download Mode to Hardware button it will program the EEPROM with all the program you just loaded into the EEPROM. But, do not click on it now. We need to modify the program first.

6) So now the trickier part. In this capture there are three basic things going on. The first is to load in a program that is basically a data server between the slave comms port and the master comms port. 
 Then once this program is running it sends the EEPROM data in packets based on the size of the EEPROM page sizes. Then once it is complete it resets and reloads the program that was previously compiled and running from your schematic. 
 So go to the top and you see the core being killed and restarted and the PLL being setup. 
 You see all the SOUT registers and serial registers then you see Program, DM0 and DM1 data. This is the pass-thru program. Then you see it start up this program. 
 
 Then you see the master port being setup then you start to see the Page Address and Page size commands. This is your program hex file being loaded into the EEPROM. It looks like this: 
 My test program was short so this is all of it: 
 
 Notice the lines that have large blocks of data that are 256 bytes long. This is the data. 
 Click on the little plus sign on the last large packet. This will be the end of the EEPROM hex file. 
 On my test program almost all of the last 256 byte page was zeros so the program end was at the start of this page. So find checksum which is the last 8 bytes of the hex file. 
 Here it is on my file: 
 
 Everything below this is all zeros. So this is the footer which is the checksum. 
 Click on the data and change it to all zeros, Here is how it looks when I only had the last byte to change: 
 
 So once they are all zeros you are done. 
 
 Now, write this to the EEPROM by clicking on the Download Mode to Hardware button I described earlier. 
 It happens really fast. The EEPROM is loaded and ready to test. Reset the DSP or power it down and let it reboot and it should work. Then change the interface registers so it writes to the EEPROM and then power down to reload it. It should load up again but this time with the updated setting. 
 
 You can save this sequence in a file if you like. 
 
 Sorry this is so long but I wanted to detail all the steps. 
 
 Dave T)

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[Bug Report] ADAU1467 Interface Write creates Self Boot failure

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