ANT Forum

I'm having trouble transmitting data in scanning mode. I'm using the NRF51422.

I am receiving data, but when I try to transmit data, nothing actually sends.

Here is the code I'm using:

/* Configure scanning channel */
sd_ant_network_address_set(ANTPLUS_NETWORK_NUMBER, (uint8_t*)m_network_key);
sd_ant_channel_assign(0, CHANNEL_TYPE_SLAVE, 0, 0);
sd_ant_channel_id_set(0, 0, DEVICE_TYPE, 0);
sd_ant_channel_radio_freq_set(0, FREQUENCY);
sd_ant_lib_config_set(ANT_LIB_CONFIG_MESG_OUT_INC_DEVICE_ID);
sd_ant_rx_scan_mode_start(0);

/* Configure transmitting channel */
sd_ant_channel_assign(1, CHANNEL_TYPE_SLAVE, 0, 0);
sd_ant_channel_id_set(1, recieved_channel_id, DEVICE_TYPE, 0);

/* Send data */
sd_ant_acknowledge_message_tx(1, 8, broadcast_data);      

Hi quenzerj!

Are you using extended messages to send the data? The channel ID of the destination master should be included with the data you send. The message should then be transmitted when a message is received from a master with a matching channel ID.

Kat      

How do I use extended messaging to send the data? It isn't clear in anything I've ready how to do this.      

I think you literally append the channel ID to the data bytes. I'm going to check it now in ANTware and confirm.
     

Thanks for looking into it Kat.

I figured it out. I needed to change the transmission type to 1 instead of 0. I didn't need to send an extended message.

     

OK good news, thanks!