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CC3200MOD: Unable to get working Wi-Fi code on Custom Board

LAXMI KANT TIWARI
Genius 3345 points
Part Number: CC3200MOD
Other Parts Discussed in Thread: UNIFLASH

Hi,
I have designed new custom board for CC3200MOD. It is working for UART, Timer, GPIO etc. But while executing the wifi code I get an error 
 
"Trouble reading register SP" or "can't run target CPU"

The error occurs after the following line

HWREG(0x44025118)=1;
 
I have also attached the screenshot of debugging window of CCS.
 

 

  • 0
    Guru 80275 points
    Hi Laxmi,

    I have no experience with this issue, but according this post ( e2e.ti.com/.../1553619 ) it looks that, that issue is connected with power source. Probably your power source is not able provide required current.

    ... just look on Ucc of module by oscilloscope in sl_Start() moment.

    Jan
  • 0 in reply to Jan D
    Genius 3345 points
    Thank You Jan Dospel.
    I would work on it and let you know.
  • 0 in reply to Jan D
    Genius 3345 points
    Hi Jan,
    I have looked on Vcc in Oscilloscope while executing cc_pal.c. I did not find anything unusual in power source. However, I have also tried to power custom board through Launchpad power supply but no luck.

    Any help would be appriciable.
  • 0 in reply to LAXMI KANT TIWARI
    Guru 39650 points
    Hi Laxmi,

    Did you look to Vcc closer as possible to CC3200MOD VBAT_ pins? Also you need see high current spike in this moment (current during radio calibration). If you not see it, it can signalise manufacturing issue. Reflow problem is common manufacturing issue with CC3200MOD. Are you able check functionality with another board?

    Please format Serial flash by Uniflash software, upload latest Service Pack and list files in filesytem. Do you see there file /tmp/phy.cal?

    Jan