How to know whether frequence hop successful with gzl?

[chenyu]

Hi: I want to get frequence hopping with gzl, Now I finish config gzl and commuicate successful between host and device. But I don't know whether frequence hop successful? would you please give some suggestion. I have an oscilloscope of 50MHz only. Host_init:

rf_gzll_init(NRF_GZLL_MODE_HOST); 
nrf_gzll_set_tx_power(NRF_GZLL_TX_POWER_0_DBM);
nrf_gzll_set_base_address_0(NRF_GZLL_DEFAULT_BASE_ADDRESS_0);
nrf_gzll_set_base_address_1(NRF_GZLL_DEFAULT_BASE_ADDRESS_1);
nrf_gzll_set_address_prefix_byte(0,0x32);
nrf_gzll_set_address_prefix_byte(1,0x24);
nrf_gzll_set_timeslot_period(GZLL_RX_PEROD/2);
nrf_gzll_set_channel_table(my_channel_table,NRF_GZLL_DEFAULT_CHANNEL_TABLE_SIZE);
nrf_gzll_set_timeslots_per_channel(timeslots_per_channel);
nrf_gzll_set_datarate(NRF_GZLL_DATARATE_2MBIT);

Device_init:

	nrf_gzll_init(NRF_GZLL_MODE_DEVICE); 
nrf_gzll_set_tx_power(NRF_GZLL_TX_POWER_0_DBM);
nrf_gzll_set_base_address_0(NRF_GZLL_DEFAULT_BASE_ADDRESS_0);
nrf_gzll_set_base_address_1(NRF_GZLL_DEFAULT_BASE_ADDRESS_1);
nrf_gzll_set_address_prefix_byte(0,0x32);
nrf_gzll_set_address_prefix_byte(1,0x24);
nrf_gzll_set_timeslot_period(GZLL_RX_PEROD/2);
nrf_gzll_set_channel_table(my_channel_table,NRF_GZLL_DEFAULT_CHANNEL_TABLE_SIZE);
nrf_gzll_set_timeslots_per_channel(timeslots_per_channel);
nrf_gzll_set_timeslots_per_channel_when_device_out_of_sync(NRF_GZLL_DEFAULT_CHANNEL_TABLE_SIZE*timeslots_per_channel);
nrf_gzll_set_device_channel_selection_policy(NRF_GZLL_DEVICE_CHANNEL_SELECTION_POLICY_USE_SUCCESSFUL);
nrf_gzll_set_datarate(NRF_GZLL_DATARATE_2MBIT);

thanks!

[Petter Myhre]

I don't quite understand. Do you want to know if one frequency hop is successful or do you want to know if frequency hopping is working? I'm don't think you can test if one frequency hop is successful.

Maybe you can use the nrf_gzll_device_tx_info_t struct that comes with nrf_gzll_device_tx_success() callback?

It contains the number of tx attempts and number of channel switches(frequency hops).

[chenyu]

Sorry, I want to know if frequency hopping is working. What is the nrf_gzll_device_tx_info_t.num_channel_switches mean? Will it show the current channel? I print it in callback function(nrf_gzll_device_tx_success()),but I found its value is always 0. Instead, It seems that the register(NRF_RADIO->FREQUENCY) show the current channel? Am I right and can I use this register to identify frequency hop is working? Thank you!