Background scanning ?

[RixtronixLAB]

Dear Members,

For scanning GSC10 sensor,

can this example be used ?

https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.2/ant_examples_scanning.html

Thanks

[awneil]

RixtronixLAB said:

GSC10 sensor

A what ?

[RixtronixLAB]

Garmin GSC10 , can I retrieve the information from it with ANT background scanning ?

How can I use this function ?

void background_scanner_process(ant_evt_t * p_ant_evt, void * p_context)
{
    uint32_t err_code;
    UNUSED_PARAMETER(p_context);
    if (p_ant_evt->channel != ANT_BS_CHANNEL_NUMBER)
    {
        return;
    }

    switch (p_ant_evt->event)
    {
        case EVENT_RX:
        {
            err_code = bsp_indication_set(BSP_INDICATE_RCV_OK);
            APP_ERROR_CHECK(err_code);

            if (p_ant_evt->message.ANT_MESSAGE_stExtMesgBF.bANTDeviceID)
            {
                m_last_device_id = uint16_decode(p_ant_evt->message.ANT_MESSAGE_aucExtData);
            }

            if (p_ant_evt->message.ANT_MESSAGE_stExtMesgBF.bANTRssi)
            {
                m_last_rssi = p_ant_evt->message.ANT_MESSAGE_aucExtData[5];
            }

            NRF_LOG_INFO("Message number %d", m_recieved);
            NRF_LOG_INFO("Device ID:     %d", m_last_device_id);
            NRF_LOG_INFO("RSSI:          %d", m_last_rssi);

            m_recieved++;
            break;
        }
        default:
        {
            break;
        }
    }
}

background_scanner_process(ant_evt_t * p_ant_evt, void * p_context)

What value should I enter in that (ant_evt_t * p_ant_evt, void * p_context) ?

Thanks

[Kenneth]

RixtronixLAB said:

What value should I enter in that (ant_evt_t * p_ant_evt, void * p_context) ?

This is a callback event from the softdevice to handle ANT events, that is registered by:

NRF_SDH_ANT_OBSERVER(m_ant_bs_observer, ANT_BS_ANT_OBSERVER_PRIO, sf_background_scanner_process, NULL);

For instance depending on the ANT event (p_ant_evt->event) you may choose to handle the data attached to the event depending on your application.

[Kenneth]

The defines (ANT_PLUS_NETWORK_KEY and ANT_FS_NETWORK_KEY) are required if you plan to support or develop an ANT+ profiles. You can find various ANT+ profiles on www.thisisant.com depending on the application.

[RixtronixLAB]

If I want to see the value of Garmin GSC10 cadence and speed sensor, how can I retrieve it ? thanks

[RixtronixLAB]

Hi Kenneth,

Please give me suggestion, which example should I use for scanning Garmin GSC10 ?

Thanks

[Kenneth]

It is not easy to provide a simple answer here, but here it goes:

Any of the master examples should show how you can scan for ANT devices, while ANT+ is "just" defined configuration and usage of an ANT channel. So if you know how to scan for an ANT device, then you can go to the ANT+ profile you are interested in to find the specific configuration you need to set for the ANT channel to "find" the ANT+ device you are in specific interested in. You need to register as an ANT+ adopter on www.thisisant.com to be able to support ANT+.

[RixtronixLAB]

Hi Kenneth,

Thanks for the reply,

................ So if you know how to scan for an ANT device, then you can go to the ANT+ profile you are interested in to find the specific configuration you need to set for the ANT channel to "find" the ANT+ device you are in specific interested in................

Which file should I change to configure my ANT code talking with my Garmin GSC-10?

What's the configuration (channel, frequency and so on ) for Garmin GSC-10 ?

Where can I find ANT+ profile I'm are interested in ,which file in code example?

...........................You need to register as an ANT+ adopter on www.thisisant.com to be able to support ANT+...............

I have registered, what will I do from that registration ? I have put ANT key license on my code.

Thanks

[RixtronixLAB]

What should I change here for pairing with Garmin GSC10?

https://www.thisisant.com/directory/gsc-10-speed-cadence-bike-sensor

 const ant_channel_config_t ms_channel_config =
    {
        .channel_number    = ANT_MS_CHANNEL_NUMBER,
        .channel_type      = CHANNEL_TYPE_MASTER,
        .ext_assign        = 0x00,
        .rf_freq           = RF_FREQ,
        .transmission_type = CHAN_ID_TRANS_TYPE,
        .device_type       = CHAN_ID_DEV_TYPE,
        .device_number     = dev_num,
        .channel_period    = CHAN_PERIOD,
        .network_number    = ANT_NETWORK_NUM,
    };

    const ant_channel_config_t bs_channel_config =
    {
        .channel_number    = ANT_BS_CHANNEL_NUMBER,
        .channel_type      = CHANNEL_TYPE_SLAVE,
        .ext_assign        = EXT_PARAM_ALWAYS_SEARCH,
        .rf_freq           = RF_FREQ,
        .transmission_type = CHAN_ID_TRANS_TYPE,
        .device_type       = CHAN_ID_DEV_TYPE,
        .device_number     = 0x00,              // Wild card
        .channel_period    = 0x00,              // This is not taken into account.
        .network_number    = ANT_NETWORK_NUM,

Thanks