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CC8520: CCdebug cann't read the cc8520 ID by PurePath after using Host-Controlled Operation

Part Number: CC8520

Hi  Sir,

I use CC8520 +AIC3204  for wireless micrphone.  

In Autonomous Operation , it work well. When I use mcu to control the CC8520 for  Host-Controlled Operation ,  it can be read the tow status bytes of cc8520 by mcu SPI interface.

but ccdebug can not read the CC8520 ID by PurePath after the above operation.

I want to refresh the CC8520 flash by PurePath, but I can not to read the CC8520 now.

I consulted the manual of  "CC85xx Family User’s Guide__FW1.4.2", but I don't find the reason.

  • Hi,

    Do you see this issue on custom hardware, or on the CC85xx Development kit? Are you able to connect and flash the device once?

    Regards,

    Daniel

  • Hi Daniel_o,

    Thank your reply!

    This issue  is on my custom hardwware.  

    If I don't use the mcu to conminicate with the CC8520 , the cc8520 ID can be read by ccdebug with PurePath.  Once I use the mcu to commicate with cc8520, the CC8520 ID can not be read anymore by ccdebug.  So, i can not refresh the flash by PurePath.

    Whether MCU SPI affects CCDEBUG read the ID of cc8520?   I also set the mcu spi IO to float mode , but it's not useful. the ccdebug's led  is always red.

    Whether special operation is required before using ccdebug refresh the flash with PurePath?

  • I can refresh the Flash of cc8520 again and again before refresh  the flash of host mcu .

    The mcu only read the CC8520 two status bytes and did not do other peration.   

    Host MCU can also read the status bytes of CC8520 when the ccdebug can not read the ID of CC8520.

  • When you request the status bytes of the CC8520, are you using the GET_STATUS SPI command? What value is returned?

    Have you verified the SPI timings from section B.1 of the CC85xx user guide?

    Regards,

    Daniel