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I tried to install the new USB audio framework example on the EZDSP C5515 v2, but I cannot hear the output sound.
On each trial, I can :- connect USB audio device either on linux or windows- Hear pops on volume up/down- see FFT on the small screen- see data through I2S bus with an oscilloscope
The demo example of Spectrum is working properly (I can hear the sine waves).
I tried :- precompiled EZDSP example of 1.51.00.04 (both load by ccs or written in the NOR flash)- recompiled original example of 1.51.00.03 (also both way to load)- modified example to follow I2C configuration of AIC chip in Spectrum example
Do you have any clue on what is going on ?
The USB audio framework example expects that the codec is on the I2S2 port from the DSP. On the current rev of the C5515 eZdsp the codec is on I2S0.You should modify the code accordingly...In i2s_sample.h... 1. Uncomment: #define USE_I2S0_PB /* define to use I2S0 */ #define USE_I2S0_REC /* define to use I2S0 */ 2. Comment: //#define USE_I2S2_PB /* define to use I2S2 */ //#define USE_I2S2_REC /* define to use I2S2 */ In csl_usb_iso_fullspeed_example.c... 1. Comment I2S0 clockgate //pcgcr_value |= CSL_FMKT(SYS_PCGCR1_I2S0CG, DISABLED); 2. Go ahead and clockgate I2S2 in the same way 3. Fix the missing semicolon bug on line 156 #else /* GPIO10 for AIC3204 reset */ gpioIoDir = (((Uint32)CSL_GPIO_DIR_OUTPUT)<<CSL_GPIO_PIN10); // This semicolon was missing Recompile, Load, and Voilà! * Note that the current rev of the C5515 eZdsp does not have the MIC BIAS signal routed out to the STEREO IN jack to the codec. Therefore the standard electret microphone will not produce any signal to the codec.I expect that this semicolon bug will be fixed in an upcoming release.I will also request a C5515 eZdsp specific build to simplify development further.
Please let the forum know if this worked for you.
Hope this helps,Mark
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In reply to Mark Mckeown:
There is also a good wiki for the C5000 Connected Audio Framework:
Thank you very much Mark !
It works great.
I hope the High Speed example will follow soon.
Thanks again for your help,-- Alexandre
I followed your instruction and compile The USB audio framework example successfully. I heard the sound from speaker. But when I connected sound through computer headphone there is no signal in Sound Recorder. Also, the volume in record wave-in for TI USB audio is grayed out. Would you please give me some clue about this issue?
In reply to Alexandre Relange:
We are also working on it. We tried C55_Connected_Audio_Framework_ALL-01.52.01.00 and C55_Connected_Audio_Framework_EZDSP-01.51.00.03 on C5515 USBSTK. We find USB Audio Device at Mixer and play music through HEADPHONE. The push button also works to change volume But we connected MP3 device to MICROPHONE jack and record sound through Audcity, there is no sound. So can you tell us which version of audio framework did you used and what version of CSS you used for compiling? And do you have any idea what is issues in our testing? Thanks.
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