Hello,
I am making a Firmware for the FCC certification, I must emit at 3 different frequency, 2404MHz (ch37), 2440MHz (ch17) and 2480MHz (ch39) on a nrf52832.
I unfortunately don’t have a spectrum analyzer so I’m trying to use the Direct Test Mode on nRF Connect Desktop
I set up the receiver like this:
and for the transmitter i used the radio_test example like this:
and then started the tx:
But on the receiveng end of the Direct Test Mode i have nothing.
But if I use the Direct Test Mode on a second demo board with this setup:
The receiving end actually sees the carriers on the 17th channel.
What is missing for the setup so the whole system works ?
it does not work it i use start_tx_carrier either:
The goal if to have a code like this:
void set_test_config()
{
m_test_config.type = MODULATED_TX;
m_test_config.mode = NRF_RADIO_MODE_BLE_1MBIT;
m_test_config.params.unmodulated_tx.txpower = NRF_RADIO_TXPOWER_POS4DBM;
m_test_config.params.unmodulated_tx.channel = 17;
m_test_config.params.modulated_tx.pattern = TRANSMIT_PATTERN_11110000;
}
and init the test like this:
int main(void)
{
uint32_t err_code;
log_init();
err_code = nrf_drv_clock_init();
APP_ERROR_CHECK(err_code);
nrf_drv_clock_lfclk_request(NULL);
err_code = app_timer_init();
APP_ERROR_CHECK(err_code);
clock_init();
set_test_config();
cli_init();
cli_start();
NRF_LOG_RAW_INFO("Radio test example started.\r\n");
radio_test_init(&m_test_config);
radio_test_start(&m_test_config);
while (true)
{
UNUSED_RETURN_VALUE(NRF_LOG_PROCESS());
nrf_cli_process(&m_cli_uart);
}
}
Thank you for your help
