CC2541: Using Host Test Release to send an Event directly to MCU without a Command

Albert Chau

Part Number: CC2541
Other Parts Discussed in Thread: CC2540

Hi,

I'm currently debugging my system using HCI commands. I've tried many ways of sending data from my MCU to CC2541 using UART via HCI commands. I mimicked the format of the HCI commands in BTool but nothing is coming back on the RX side on my MCU. My last resort is to manually flash something onto the CC2541 that will send an event (any data for that matter) from the bluetooth chip. I'll use HostTestRelease project to do this, but my question is, what function or in which .c file should I program it in the HostTestRelease project? Is there a sample code I could look at?

Thanks.

over 8 years ago

0 YiKai Chen over 8 years ago

Guru 735685 points

Do you mean to replace whole HCI command with your own?

0 Albert Chau over 8 years ago in reply to YiKai Chen

Prodigy 240 points

Not quite. My problem is that I am sending an HCI command from my MCU but I am not getting a response back.

Is there any way I can send data from CC2541 to my MCU directly (without having to first send a command) , perhaps editing the Host Test Release project? I want to verify and single out the connection going from CC2541 -> MCU

0 YiKai Chen over 8 years ago in reply to Albert Chau

Guru 735685 points

If you connect CC2541 with BTool, does it work?

0 Albert Chau over 8 years ago in reply to YiKai Chen

Prodigy 240 points

My CC2541 is the TiWi uB1 chip version (Not the EM board). I don't believe the BTool is compatible with the CC2541.

I happened to have the USB Dongle Version (CC2540) so that's why I could use BTool and HCI commands.

I might be mistaken so if BTool can connect to the CC2541, that would be great. I can connect my CC2541 Chip to a CC debugger (for flashing firmware onto it) but I tried using BTool to connect to it using the CC Debugger but it doesn't work.

0 YiKai Chen over 8 years ago in reply to Albert Chau

Guru 735685 points

If you download HostTest example to CC2541 correctly, I see no reason why BTool cannot talk with it.

0 Albert Chau over 8 years ago in reply to YiKai Chen

Prodigy 240 points

Using the CC Debugger to connect to it?

Here's my setup:
CC Debugger connected to the CC2541 Debug Clock and Data lines. CC2541 Flashed with 'C:\Texas Instruments\BLE-CC254x-1.4.2.2\Accessories\HexFiles\CC2541_SmartRF_HostTestRelease_All.hex'

After this setup, I still do not see the CC Debugger's COM port as an option in BTool to be selected to connect to.

0 YiKai Chen over 8 years ago in reply to Albert Chau

Guru 735685 points

Can you take a picture on your CC2541 HW and attach it?

0 Albert Chau over 8 years ago in reply to YiKai Chen

Prodigy 240 points

Is there no simple way in the Host Test project that I can send an endless loop of bytes to the MCU? Therefore, I can just check the FIFO on my MCU and see if any data is coming back on the TX line from the CC2541

0 YiKai Chen over 8 years ago in reply to Albert Chau

Guru 735685 points

You can try to use API NPI_WriteTransport to send messages from HostTest.

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CC2541: Using Host Test Release to send an Event directly to MCU without a Command