WL1837MOD: Bluetooth firmware hangs when first writing memory block in section NFC DMEM Init of the TIInit_11.8.32 script

Humm.. That is strange.. What is your exact Wilink part number and are you using with BlutopiaPM or Bluez?

Thanks

Thanks for reply, Hari.

We're using BlueZ 5.49

The version numbers are below:

HCI Version 4.2 (0x8) - Reversion 0 (0x0000)
LMP Version 4.2 (0x8) - Subversion (0xac0f)

Hanging may mean slow processing inside bluetooth chip WL1837MOD, it seems WL1837MOD doesn't work on hardware flow control, the RTS line is only toggled through enable pin, if enabled, RTS is low, if disabled, RTS is high, during initialization, RTS stays low regardless what UART speed is, RTS never turns high.

Shengchu

Humm.. The default HCI configuration on WL1837 does use hardware flow control (H4). What is your Host processor? Please ensure, UART hardware flowcontrol is supported/configured and the baudrates 3M is supported..

Thanks

Thanks Hari,

this is not on host side (host is OMAP-L138), when hanging, both RTS and CTS stay low, after host sent first NFC DMEM INIT command to WL1837MOD, receives nothing. Right now I did a workaround by delay 100 ms on each command in this block, but it adds unexpected initialization time. It seems this issue is specific to NFC DMEM INIT.

Shengchu

Is it on a custom board? Or, are you using WL18xx COM8 module? What is the exact WL18xx part number, you are using? We, have n't seen any issue when testing with WL18xx COM8 with AM35x/AM47x EVM boards..

Thanks

Hi Nari,

the following version info is read from the chip:
HCI version: Bluetooth 4.2 (0x08) - Revision 0 (0x0000)
LMP version: Bluetooth 4.2 (0x08) - Subversion 44047 (0xac0f)
Manufacturer: Texas Instruments Inc. (13)

Shengchu

I tried on AM335x BeagleBone with Bleuz 5.46 and do not see any issue:

_____                    _____           _         _  

|  _  |___ ___ ___ ___   |  _  |___ ___  |_|___ ___| |_

|     |  _| .'| . | . |  |   __|  _| . | | | -_|  _|  _|

|__|__|_| |__,|_  |___|  |__|  |_| |___|_| |___|___|_|  

             |___|                    |___|            

Arago Project am335x-evm ttyS0

Arago 2018.04 am335x-evm ttyS0

am335x-evm login: root

root@am335x-evm:~#

root@am335x-evm:~#

root@am335x-evm:~#

root@am335x-evm:~# hciattach /dev/ttyS1 texas 3000000

Found a Texas Instruments' chip!

Firmware file : /lib/firmware/ti-connectivity/TIInit_11.8.32.bts

Loaded BTS script version 1

texas: changing baud rate to 3000000, flow control to 1

[   76.065746] Bluetooth: Core ver 2.22

[   76.082112] NET: Registered protocol family 31

[   76.086607] Bluetooth: HCI device and connection manager initialized

[   76.102923] Bluetooth: HCI socket layer initialized

[   76.107847] Bluetooth: L2CAP socket layer initialized

[   76.116930] Bluetooth: SCO socket layer initialized

[   76.133701] Bluetooth: HCI UART driver ver 2.3

[   76.144706] Bluetooth: HCI UART protocol H4 registered

[   76.151681] Bluetooth: HCI UART protocol LL registered

[   76.169816] Bluetooth: HCI UART protocol Three-wire (H5) registered

Device setup complete

root@am335x-evm:~#

root@am335x-evm:~# bluetoothctl --version

5.46

root@am335x-evm:~#

I am also attaching the BTS file used.. It is from the TI processor SDK..TIInit_11.8.32.bts