Hi,
We are currently developing a new product using nRF8001 IC and it is pretty much stable (not 100%) until now.
My algorithm is straight forward: When the MCU is in idle mode I issue a connect command to the nRF8001 so it can start advertising and It responds back with a response command event with success, I put the MCU to sleep (deep sleep) and only wake it up after I receive a low level in the "RDYN" pin.
The critical issue is that sometimes (seldom) the nRF8001 doesn't advertise at all, it is like its radio is turned off and, as you can imagine, my MCU stays sleeping forever.
I've separated two log snippets, one that the nRF8001 is actually advertising (after sending the response command event with success) and another that is not.
log 1 - nRF8001 is advertising after connect command
MCU wakes up
[16:56:26:926] C1 :01, 0B,
[16:56:26:927] E15 :0F, 85, 01, 37, 49, 8C, 6A, 78, 40, 27, 00, 00, 00, D0, 07, 05,
[16:56:26:927] 1 :01, 09, ed
[16:56:26:929] E17 :11, 88, FD, 66, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00,
[16:56:26:929] Evt Pipe Status
[16:56:26:930] E5 :05, 84, 0B, 00, FB, 02,
[16:56:26:930] E12 :0C, 84, 09, 00, 41, 00, 02, 03, 00, 00, 00, 00, 00,
[16:56:26:931] C11 :0B, 0D, 02, 41, 00, 02, 03, 00, 00, 00, 00, 00,
[16:56:26:931] E3 :03, 84, 0D, 00,
[16:56:27:001] E17 :11, 88, FD, 6E, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00,
[16:56:27:001] Evt Pipe Status
[16:56:27:001] C1 :01, 13,
[16:56:27:001] E3 :03, 84, 13, 00,
[16:56:31:295] E7 :07, 89, 27, 00, 00, 00, 14, 00,
[16:56:31:295] Evt link connection interval changed
[16:56:31:296] C8 :08, 0D, 0E, 27, 00, 00, 00, 14, 00,
[16:56:31:296] E3 :03, 84, 0D, 00,
[16:56:33:684] E3 :03, 86, 03, 08,
[16:56:33:684] Evt Disconnected/Advertising timed out
[16:56:33:685] C5 :05, 0F, 00, 00, 50, 00,
[16:56:33:685] E3 :03, 84, 0F, 00,
[16:56:33:686] Advertising started. Tap Connect on the Access Controller UART app
[16:56:34:052] SLEEP MODE.
[16:56:34:052] WWDT Disabled
log 2 - nRF8001 is NOT advertising after connect command
[16:56:42:954] C1 :01, 0B,
[16:56:42:955] E15 :0F, 85, 01, 37, 49, 8C, 6A, 78, 40, 27, 00, 00, 00, D0, 07, 05,
[16:56:42:955] 1 :01, 09, ed
[16:56:42:956] E17 :11, 88, FD, 66, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00,
[16:56:42:957] Evt Pipe Status
[16:56:42:957] E5 :05, 84, 0B, 00, FB, 02,
[16:56:42:958] E12 :0C, 84, 09, 00, 41, 00, 02, 03, 00, 00, 00, 00, 00,
[16:56:42:958] C11 :0B, 0D, 02, 41, 00, 02, 03, 00, 00, 00, 00, 00,
[16:56:42:958] E3 :03, 84, 0D, 00,
[16:56:42:997] E17 :11, 88, FD, 6E, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00,
[16:56:42:998] Evt Pipe Status
[16:56:42:998] C1 :01, 13,
[16:56:42:998] E3 :03, 84, 13, 00,
[16:56:46:555] E3 :03, 86, 03, 13,
[16:56:46:556] Evt Disconnected/Advertising timed out
[16:56:46:556] C5 :05, 0F, 00, 00, 50, 00,
[16:56:46:556] E3 :03, 84, 0F, 00,
[16:56:46:557] Advertising started. Tap Connect on the Access Controller UART app
[16:56:46:908] SLEEP MODE.
[16:56:46:910] WWDT Disabled
The difference between them are only a few commands/events changed by the ACI and nRF8001 (shown below for reference):
[16:56:31:295] E7 :07, 89, 27, 00, 00, 00, 14, 00,
[16:56:31:295] Evt link connection interval changed
[16:56:31:296] C8 :08, 0D, 0E, 27, 00, 00, 00, 14, 00,
[16:56:31:296] E3 :03, 84, 0D, 00,
Just a Connection interval event and a set local data command after that (with the respective response).
Apart from that the only thing different is the disconnection reason:
0x08 timeout for the first one
0x13 - Remote User Terminated Connection for the second one
This is critical for us, do you guys have any clue about that or is nRF8001 just not reliable enough?
Best Regards,
