What is ECODE 0x0001

[torsten2]

Posted on May 10, 2015 at 14:52

Hello,

the very first response I get when communicating with a BlueNRG is the following byte sequence: 0x4, 0xff, 0x3, 0x1, 0x0, 0x1

If I get it right, I have to read it like this:

0x04 == HCI Event Packet

0xff == Event Code ->Vendor Specific

0x03 == Parameter Total Length

0x01, 0x00 == BlueNRG Event Code (ECODE) -> 0x0001

0x01 == Parameter, depends on what ECODE 0x0001 means.

The Event Code 0x0001 has the event group ID of 0, so, this would be a �HCI extension event�. When I search UM1755 for this ECODE, I only find 4.7. HCI Vendor specific commands. According to the header and description, it looks like the  heading of Table 253 is wrong and should be CGID, CID, OpCode.

But what is ECODE 0x0001? Something internal that should be ignored?

Kind regards,

Torsten

#bluenrg #aci #hci

[marchese.graziella]

Posted on May 11, 2015 at 11:32

Hi Torsten,

the BlueNRG Event Code (ECODE) -> 0x0001 is the ecode of EVT_BLUE_INITIALIZED, it is the following structure:  

#define EVT_BLUE_INITIALIZED                      (0x0001)

typedef

__packed

struct

_evt_blue_initialized{     uint8_t reason_code;  } PACKED evt_blue_initialized;

#endif

For further information, please see the Application Note

AN4491 (section 5), that you can find at the following link:

http://www.st.com/web/en/resource/technical/document/application_note/DM00116392.pdf

Regards, GM

[torsten2]

Posted on May 11, 2015 at 11:44

Hi Graziella,

thank you very much.Kind regards,Torsten