RTOS/CC2640R2F: CC2640 Bluetooth Communication

Mark Felberg

Guru 19990 points

Part Number: CC2640R2F
Other Parts Discussed in Thread: BLE-STACK

Tool/software: TI-RTOS

Hi everyone, I'm working with my CC2640s with a custom 4x4 board. Right now I have made great progress with Project-Zero and my APP. Now I'm testing new queues, including, Simple_Central and Simple_Peripheral. The examples work perfectly, but I have questions:

Is it possible to pair them the first time? and the second communication is automatic?
Is it possible to drive LEDs between the two devices? That is, from Simple_Central I press a button and Simple_Peripheral lights up a LED, if we repeat the button the LED goes off.

I wait your answer.

Regards

over 6 years ago

0 J Lindh over 6 years ago

TI__Guru 57865 points

Hi Mark,
1. Yes, you can enable pairing feature (with bonding) that allows seamless re-connect. Please see this SLA for more info on bonding: dev.ti.com/.../ble_02_sec_basics.html
2. Yes, please see the project zero example code for just that.

0 Mark Felberg over 6 years ago in reply to J Lindh

Guru 19990 points

Ok, then for second point..I add a service how the projectzero implement led service...this I add in Simple_Peripheral...and I Simple_Central, What I should to add?

0 YiKai Chen over 6 years ago

Guru 735685 points

You can refer to "case GATT_RW:..." in SimpleCentral_handleKeys which show you how to do GATT read/write.

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

I copied led_service.c and led_service.h in my PROFILES in Simple_peripheral. Now, I modify the my simple_peripheral.h and I modify case GATT_RW in simple_central for send byte 00 or 01. It's correct?

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

It sounds correct but depends on what you actually implement.

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

The my goal is to control the led of Simple_peripheral with my buttons of simple_central

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

I already told you that you can refer to "case GATT_RW:..." in SimpleCentral_handleKeys which show you how to do GATT read/write to make it.

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

Simple_central and ProjectZero Can they communicate with each other?

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

Yes

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

In this moment, the Simple Central found the ProjectZero but not found the GATT W/R. If I found this I can turn/off the led right?

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

I couldn’t understand what you mean “If I found this I can turn/off the led right?”

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

If the Simple_Central found the resources of Project-zero. Can I turn on/off the led with this?

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

Yes

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

In this moment I not found the resources of Project-Zero. I see that in central.c the Simple-Central found only resources with fffff address...I can to change this in address of led of project-zero. It's correct?

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

I suppose you can try that.

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

But is it possible to make Simple-Central and Project-Zero communicate without connecting? That is, I press the button1 and I turn on the led1 of the project-zero.

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

No, it is not possible to make Simple-Central and Project-Zero communicate without connecting.

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

I meant, the first connection and then without me joining again. I click the button and the LED lights up

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

I suppose you can do pairing and bonding in these two examples to make it.

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

The Simple-Central not found the GATT of Project-Zero. Why?

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

I don’t test this by yourself so I cannot judge.

0 J Lindh over 6 years ago in reply to Mark Felberg

TI__Guru 57865 points

Hi Mark,
The use case you are looking for is not part of the default setup. You will need to implement the functionality. In order to do so, you will need to understand how the BLE-Stack operated and how you should implement your application. Please refer to the UG for this: dev.ti.com/.../ble-stack-3-index.html

Simple Central project does not implement a generic service discovery. You will need to modify it for the purpose of Project Zero services.

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

I read that Simple-GATT-Profile has the SIMPLEPROFILE_SERV_UUID 0XFFFF. Project-zero for the LED has 0X1110. Can I modify this for read the characteristic of project-zero?

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

I don’t have experience doing this by myself but I think you should try it.

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

In this moment, I communicate between Simple-Central and Simple-Peripheral. In Simple-Peripheral, I modify the my code that when receive 1 turn on the led and when receive 0 turn off the led. I see that Simple-Central send to simple-peripheral 0,1,2,3,4,5 etc....it's possible to send only 0 and 1?

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

I think it’s possible.

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

How?

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

I also don’t have experience doing this. I suggest you to trace simple_central example to make it.

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

Can I only Write the GATT?

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

I couldn’t understand your question. Can you elaborate?

0 Mark Felberg over 6 years ago in reply to YiKai Chen

Guru 19990 points

In simple-central I can Read/Write a GATT. Can I to write only the GATT?

0 YiKai Chen over 6 years ago in reply to Mark Felberg

Guru 735685 points

I see no problem on this.

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RTOS/CC2640R2F: CC2640 Bluetooth Communication