RE: Usage of wav player module on EVAL-ADAU1452

Question

Hello, 
 I have tried the procedure with the file wav.zip from ADIApproved But it does not work on my ADA1452 Eval. When I download FlashProgrammer.dspproj , and then verify target memory I get : "Verify Failed: readback timed out" And I downloaded WavPlayer.dspproj and I get no sound.

Harishgowtham · Accepted Answer

Hello stmoeller60, 
 Sorry for the delayed reply. 
 You can't use the same EEPROM to store the WAV file and self-boot. When writing a self-boot program to an EEPROM, previously written data will be overwritten by the new program. You can also see that Sigma Studio performs an erase operation on the EEPROM before writing the self-boot program. 
 You have to use another SPI EEPROM for storing your Wav file, The SCLK, MISO, and MOSI pins will be shared between two EEPROMs from the master control port. you can use any MP pins as a slave select for that WAV file storing EEPROM. 
 You MUST use the SS_M pin as a slave select for self-booting which is already connected to your Eval board (onboard EEPROM). self-boot can be only done by using the main latch (SS_M). 
 So, use your onboard EEPROM (SS_M as CS) as a self-boot EEPROM and another EEPROM (any MP pins as a CS) for your writing/reading your WAV file. 
 You can find two projects below, one is to write the WAV file to your EEPROM (MP8 as CS) by flash programmer and another project is reading the WAV file using wav player module (MP8 as a CS) 
 In the below example, I have used MP8 as a slave select for my second EEPROM (WAV file), and respective register settings are configured in both projects. 
 1)store the WAV file in your 2nd EEPROM using the Flash programmer project. (SPI configs are all set in the window) 
 2) write the WAV player project to your self-boot EEPROM. (SPI configs are already set in the wav player module to read wav file from the 2nd EEPROM) 
 3) Trigger the self-boot, once the program self-boots from the onboard self-boot EEPROM and the wav player project starts running, it will read the WAV file from the 2nd EEPROM and play in your output. 
 wav_player R_W.zip 
 Hope this helps. 
 Regards, 
 Harish)

Harishgowtham · Answer

Hello stmoeller60, 
 Please find the attached projects and try that in your board. 
 Refer the config for both projects. 
 Flash programmer setting. 
 
 wav player setting 
 
 I have used a 440Hz beep sound like file (wav) and tested the project. The file is also attached along with the projects. It's outputting correct frequency and I have verified it with a scope. 
 Change the GPIO pin to whichever pin you want to connect to your push buttons and configure it properly! 
 wavplayer.zip 
 Kindly do reply if you have further questions. 
 Regards, 
 Harish

Harishgowtham · Answer

Hello, 
 The gdrive link that you uploaded here asks for a permission. so, can you please upload the files here in the forum? 
 Below is how you can upload a file. 
 1) You can drag and drop the file directly from the file location to this reply box (text window) 
 2) Or You can follow the below.

Regards, 
 Harish

Harishgowtham · Answer

Hello, 
 stmoeller60 said: Also I tried to load the wav in matlab and save it as a txt file, it didn't succeed lto flahprogram: exception and crash of sigmastudio 4.6 
 While writing text files, please note that there should not be an empty space left out in the text file. If there is a space like in the below screenshot, then the exception error and the sigma studio crash will happen. 
 
 Please remove the space and make it like below. 
 
 Please find that flash programmer setting as well for writing text files. 
 You can read and verify the written data by using SPI read like modules in the master control port.

I will check with your wav file in the meanwhile. 
 Regards, 
 Harish

Harishgowtham · Answer

Hello, 
 Your samples are in scientific e notation, the module doesn't accept it. You can change that to real numbers like below. I uploaded those 3 samples into my EEPROM and reading back the data. 
 
 Once you uploaded the samples in the EEPROM then you can play it back from the EEPROM by using wav player module by selecting 'Audio sample in 8.24 format' option. 
 Regards, 
 Harish

Harishgowtham · Answer

Hello Stephen and Dave, 
 Initially I said to use two EEPROMs. One for storing the self-boot program and another one for the WAV file. We can use a single EEPROM to do this. Please give it a try as explained below. 
 The thing is the self-boot routine and the flash programmer module both will erase the external memory before writing a new data into it. Either if we write the self-boot program (using self-boot procedure) or wav file (using flash programmer) first, the latter operation will erase the previously written data. So, try this method to write to both operations. 
 While trying this, Initially I used a wav file, and it was successful. However, I observed a very tiny glitch at the end of the audio. So, I decided to use audio samples and it comes out well. You can try with a wav file or an audio samples text file. Please get back to us with your results. 
 Step1: write the audio sample text file/ wav file to the upper memory of the EEPROM. In the onboard EEPROM of the eval board, the starting address of the sector 2 is 65536. Please refer below. 
 
 The text file that I used is, samples of only two cycles of a 3KHz wave sampled at 48KHz. 16 samples for a cycle. Below screenshots show a text file for a mono and stereo channel. 
 
 After writing those sample file to the above-mentioned address using the flash programmer project, go to the wav player project. 
 Step 2: Just verify the address to read the samples from and the data formats, then compile the project. Initiate the trigger. I gave 264 bytes as a length. since that file contains 66 samples, each sample is a word (4 bytes), hence 264 bytes. 
 please refer below. 
 
 You can hear the 3KHz tone or you can probe and see the outputs. So far, it's good. 
 Step 3: when you try to write this wav player project to the self-boot EEPROM, you have to be careful because if you follow the usual self-boot procedure then it will erase the existing wav file at the sector 0. So, follow the self-boot procedure until the EEPROM properties window appear. 
 'C7' is the erasing command for this chip, so change that value to some random value and proceed further. Please refer below. 
 
 It will fail to erase the memory and will start writing the self-boot program into the EEPROM. Once the self-boot procedure is successfully completed. Turn OFF and ON the board, turn ON self-boot button and trigger the wav player using the GPIO pin and see whether it outputs the expected signal. I believe you will be able to get the expected outputs. Please find the attachments. 
 wavplayer (2).zip 
 Regards, 
 Harish

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RE: Usage of wav player module on EVAL-ADAU1452