static void start_rx(hw_rx_cfg_t const* rx_cfg)
{
DPRINT("start_rx");
if (current_state == HW_RADIO_STATE_OFF)
ezradio_hal_DeassertShutdown();
current_state = HW_RADIO_STATE_RX;
configure_channel(&(rx_cfg->channel_id));
configure_syncword_class(rx_cfg->syncword_class, rx_cfg->channel_id.channel_header.ch_coding);
rx_fifo_data_lenght = 0;
if (rx_cfg->channel_id.channel_header.ch_coding == PHY_CODING_FEC_PN9)
{
ezradioStartRx(ez_channel_id, false);
} else {
ezradioStartRx(ez_channel_id, true);
}
DEBUG_RX_START();
if(rssi_valid_callback != 0)
{
// TODO calculate/predict rssi response time and wait until valid. For now we wait 200 us.
hw_busy_wait(200);
rssi_valid_callback(hw_radio_get_rssi());
}
}
void read_rssi()
{
timestamped_rssi_t rssi_measurement;
rssi_measurement.tick = timer_get_counter_value();
rssi_measurement.rssi = hw_radio_get_rssi();
rssi_measurements[rssi_measurements_index] = rssi_measurement;
rssi_measurements_index++;
if(rssi_measurements_index < 1000)
timer_post_task_delay(&read_rssi, 1); // TODO delay
else
log_print_string("done");
}
void read_rssi()
{
timestamped_rssi_t rssi_measurement;
rssi_measurement.tick = timer_get_counter_value();
char rssi_samples_str[5 * RSSI_SAMPLES_PER_MEASUREMENT] = "";
int16_t max_rssi_sample = -200;
for(int i = 0; i < RSSI_SAMPLES_PER_MEASUREMENT; i++)
{
rssi_measurement.rssi[i] = hw_radio_get_rssi();
if(rssi_measurement.rssi[i] > max_rssi_sample)
max_rssi_sample = rssi_measurement.rssi[i];
sprintf(rssi_samples_str + (i * 5), ",%04i", rssi_measurement.rssi[i]);
// TODO delay?
}
char str[80];
char channel_str[8] = "";
channel_id_to_string(&rx_cfg.channel_id, channel_str, sizeof(channel_str));
lcd_write_string(channel_str);
sprintf(str, "%7s,%i%s\n", channel_str, rssi_measurement.tick, rssi_samples_str);
console_print(str);
#ifdef PLATFORM_EFM32GG_STK3700
//lcd_all_on();
lcd_write_number(max_rssi_sample);
#elif defined HAS_LCD
sprintf(str, "%7s,%d\n", channel_str, max_rssi_sample);
lcd_write_string(str);
#endif
if(!use_manual_channel_switching)
{
switch_next_channel();
sched_post_task(&start_rx);
}
else
{
sched_post_task(&process_uart_rx_fifo); // check for UART commands first
uint16_t delay = rand() % 5000;
timer_post_task_delay(&read_rssi, delay);
}
hw_watchdog_feed();
}
static void start_rx(hw_rx_cfg_t const* rx_cfg)
{
current_state = HW_RADIO_STATE_RX;
cc1101_interface_strobe(RF_SFRX);
configure_channel(&(rx_cfg->channel_id));
configure_syncword_class(rx_cfg->syncword_class);
cc1101_interface_write_single_reg(PKTLEN, 0xFF);
if(rx_packet_callback != 0) // when rx callback not set we ignore received packets
cc1101_interface_set_interrupts_enabled(true);
cc1101_interface_strobe(RF_SRX);
if(rssi_valid_callback != 0)
{
// TODO calculate/predict rssi response time (see DN505)
// and wait until valid. For now we wait 200 us.
hw_busy_wait(200);
rssi_valid_callback(hw_radio_get_rssi());
}
}
static void report_rssi()
{
int16_t rss = hw_radio_get_rssi();
rssi_valid_callback(rss);
}
