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Part Number: TMS320VC5505
I recently wrote a simple software for the TMS320VC5505 eZdsp Stick (revB) by using the usual example code. Everything was working fine until I loaded the program to EEPROM using the eZdsp Programming Tool (programmer_USBKey.out). Afterwards the communication over I2S totally stopped working. The measurement of the I2S pins pointed out that there are absolutely no I2S signals at any time, neither in a debug session nor by running the program programmed to EEPROM.
The main problem is that I cannot restore a working state so that I have no idea where to start identifying the causes of the problem.
In another thread I found the hint
"We know this issue. The example did not clear some conditions set by pre-installed code (boot from flash)."
Therefore one thought would be that those conditions set by pre-installed code were necessary for my software to start up/initialize I2S.
The important part of the code (or a minimal example) is basically the example code. Other parts of the program (UART, LED) are not affected and work exactly as expected..
Is there anyone who had a similar problem ?
Many thanks in Advance!
- TMS320VC5505 eZdsp USB Stick (Rev B)
- Code Composer Studio Version: 22.214.171.12400
- .out to .bin conversion using hex55.exe (latest version)
- programming using eZdsp Programming Tool (programmer_USBKey.out).
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In reply to Lalindra Jayatilleke:
Thank you for asking!
The problem is still present, but as I had no possibility to get the system back in a working state, I purchased the same Stick again (it's RevC now). As I fear that loading the program to EEPROM will lead to the same result, I did not try it yet with the new Stick. Therefore, I would be happy about any hint regarding the problem in this thread.
In the event that I find the source of the problem and/or a solution, I will post it here.
In reply to Richard Stelzer:
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