/**@brief Initialize application.
*/
static void application_initialize()
{
uint32_t err_code;
err_code = sd_ant_cw_test_mode_init();
APP_ERROR_CHECK(err_code);
// sd_ant_cw_test_mode assumes that the hfclck is enabled.
// Request and wait for it to be ready.
err_code = sd_clock_hfclk_request();
APP_ERROR_CHECK(err_code);
uint32_t hfclk_is_running = 0;
while (!hfclk_is_running)
{
APP_ERROR_CHECK(sd_clock_hfclk_is_running(&hfclk_is_running) );
}
// CW Mode at +4dBm, 2410 MHz with Modulated Transmission
err_code = sd_ant_cw_test_mode(RADIO_FREQ_OFFSET,
RADIO_TX_POWER_LVL_CUSTOM,
RADIO_TXPOWER_TXPOWER_Pos4dBm,
MODULATED_TRANSMISSION_TEST_MODE);
APP_ERROR_CHECK(err_code);
}
bool nrf_drv_clock_hfclk_is_running(void)
{
bool result;
ASSERT(m_clock_cb.module_initialized);
#ifndef SOFTDEVICE_PRESENT
result = nrf_clock_hf_is_running(NRF_CLOCK_HF_SRC_HIGH_ACCURACY);
#else
uint32_t is_running;
UNUSED_VARIABLE(sd_clock_hfclk_is_running(&is_running));
result = is_running ? true : false;
#endif
return result;
}
void OpenAdc(uint32_t uAdcNumber)
{
uint32_t p_is_running = 0;
sd_clock_hfclk_request();
while(! p_is_running) { //wait for the hfclk to be available
sd_clock_hfclk_is_running((&p_is_running));
}
while (ADC_BUSY == NRF_ADC->EVENTS_END);
NRF_ADC->CONFIG = (ADC_CONFIG_RES_10bit << ADC_CONFIG_RES_Pos)
| (ADC_CONFIG_INPSEL_AnalogInputOneThirdPrescaling << ADC_CONFIG_INPSEL_Pos)
| (ADC_CONFIG_REFSEL_VBG << ADC_CONFIG_REFSEL_Pos)
| (uAdcNumber << ADC_CONFIG_PSEL_Pos);
NRF_ADC->TASKS_START = 1;
}
bool nrf_drv_clock_hfclk_is_running(void)
{
ASSERT(m_clock_cb.module_initialized);
#ifdef SOFTDEVICE_PRESENT
if (softdevice_handler_is_enabled())
{
uint32_t is_running;
UNUSED_VARIABLE(sd_clock_hfclk_is_running(&is_running));
return (is_running ? true : false);
}
#endif // SOFTDEVICE_PRESENT
return nrf_clock_hf_is_running(NRF_CLOCK_HFCLK_HIGH_ACCURACY);
}
/**
* @brief Function to trigger ADC sampling
*/
void adc_sample(void)
{
ret_code_t ret_code;
uint32_t p_is_running = 0;
ret_code = nrf_drv_adc_buffer_convert(adc_buffer, ADC_BUFFER_SIZE); // Allocate buffer for ADC
APP_ERROR_CHECK(ret_code);
//Request the external high frequency crystal for best ADC accuracy. For lowest current consumption, don't request the crystal.
sd_clock_hfclk_request();
while(! p_is_running) { //wait for the hfclk to be available
sd_clock_hfclk_is_running((&p_is_running));
}
for (uint32_t i = 0; i < ADC_BUFFER_SIZE; i++)
{
while((NRF_ADC->BUSY & ADC_BUSY_BUSY_Msk) == ADC_BUSY_BUSY_Busy) {} //Wait until the ADC is finished sampling
NRF_LOG_INFO("Start sampling ... \r\n");
nrf_drv_adc_sample(); // Trigger ADC conversion
}
}
