ANT Forum

Hi,

I'm using a UART and a GPIO to control the ANT.

Here is sequence I do to restart the ANT :
RST = '0' SUSPEND = '1' SLEEP = '1' for 500 ms;
RST = '1' SUSPEND = '1' SLEEP = '1' for 500 ms;
RST = '1' SUSPEND = '1' SLEEP = '0' for 500 ms;

Then I start to send command:

1: Set the Network Key of my channel :
{ 0xA4, 0x09, 0x46, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xEB, 0x00, 0x00 };

2: Assign my channel :
{ 0xA4, 0x03, 0x42, 0x00, 0X10, 0X00, 0xF5, 0x00, 0x00 };

3: Set my channel ID :
{ 0xA4, 0x05, 0x51, 0x00, 0X21, 0X00, 0x01, 0x01, 0xD1, 0x00, 0x00 };

4: Set my RF Frequency :
{ 0xA4, 0x02, 0x45, 0x00, 0X42, 0XA1, 0x00, 0x00 };

5: Set my transmission Power :
{ 0xA4, 0x02, 0x47, 0x00, 0X03, 0XE2, 0x00, 0x00 };

6: Open my Channel :
{ 0xA4, 0x01, 0x4B, 0x00, 0XEE, 0x00, 0x00 };

7: Send a broadcast message :
{ 0xA4, 0x09, 0x4E, 0x00, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0XEB, 0x00, 0x00 };

From step 1 to 6 I have no problem, ANT give my goods answers:
{ 0xA4, 0x03, 0x40, 0x00, My_CMD, 0x00, CS };

But after the 7th step I get that message :
{ 0xA4, 0x03, 0x40, 0x00, 0x01, 0x03, 0xE5 };

And not just one time but over and over.
Is that normal?


Regards,
Lionel Gautier.      

That would be an EVENT_TX. This message indicates that your master is transmitting data every channel period, and is normal. Please see Section 9.5.5.1 of the "ANT Message Protocol and Usage" document for more details on the messaging involved with sending broadcast data.      

Ok, does MSG_ID = 0x01 means an EVENT?      

Yes. A full description of the Channel Response/Event Messages is on section 9.5.6 of the same document.      

Perfect :D thank you for your help.