search

bluekitchen / btstack

Dual-mode Bluetooth stack, with small memory footprint.
http://bluekitchen-gmbh.com
Other
1.74k stars 613 forks source link

STM32 - CC2564B - Timeout #121

Closed 8lank closed 6 years ago

8lank commented 6 years ago

Hi,

I followed your blog tutorial http://bluekitchen-gmbh.com/btstack-port-for-stm32-f4-discovery-board-with-cc256x/ to port bluekitchen btstack on a STM32F4 discovery board with a cc256x Bluetooth chipset. Everything was working fine until I started trying the gap inquiry example. The process is blocked after receiving the event 6E 00 and loops infinitely on it:

[00:00:18.316] CMD => 03 0C 00 [00:00:18.319] EVT <= 6E 00 [00:00:18.517] CMD => 03 0C 00 [00:00:18.520] EVT <= 6E 00 [00:00:18.718] CMD => 03 0C 00 [00:00:18.721] EVT <= 6E 00 [00:00:18.919] CMD => 03 0C 00 [00:00:18.922] EVT <= 6E 00 [00:00:19.120] CMD => 03 0C 00 [00:00:19.123] EVT <= 6E 00 [00:00:19.321] CMD => 03 0C 00 [00:00:19.324] EVT <= 6E 00 [00:00:19.522] CMD => 03 0C 00 [00:00:19.525] EVT <= 6E 00 [00:00:19.723] CMD => 03 0C 00 [00:00:19.726] EVT <= 6E 00 [00:00:19.924] CMD => 03 0C 00`

I also tried to import directly the whole project from your repository https://github.com/bluekitchen/btstack/tree/master/port/stm32-f4discovery-cc256x but I got the same result. I also tried to update the TI Bluetooth Service Pack with the latest version.

Have you ever encountered such behavior on TI CC256x chipset?

Hw:

Thanks

mringwal commented 6 years ago

hi. BTstack sends an HCI Reset every 200 ms but doesn't get a response. Please check the UART lines with a logic analyzer to see if a) there is no response from the CC256x or b) there is a response but it is not received by BTtstack's HCI layer.

8lank commented 6 years ago

There is no response from the CC256x. I tried with another CC256x but doesn't work either.

mringwal commented 6 years ago

Do you see the HCI Reset (01 03 0c 00)?

please check the wiring. you'll need to pull nShutdown to VCC, connect RTS/CTS ( check if CC256x CTS is low), and also if there's a 32.768 kHz slow clock provided. and/or check TI's E2E forum.

8lank commented 6 years ago

Found the issue: the st adapter was non-functioning and the cc256x not well powered. Thanks for your help.

mringwal commented 6 years ago

Glad you found the root cause