void bootstrap()
{
DPRINT("Device booted at time: %d\n", timer_get_counter_value()); // TODO not printed for some reason, debug later
id = hw_get_unique_id();
hw_radio_init(&alloc_new_packet, &release_packet);
rx_cfg.channel_id = current_channel_id;
tx_cfg.channel_id = current_channel_id;
ubutton_register_callback(0, &userbutton_callback);
ubutton_register_callback(1, &userbutton_callback);
fifo_init(&uart_rx_fifo, uart_rx_buffer, sizeof(uart_rx_buffer));
uart_set_rx_interrupt_callback(&uart_rx_cb);
uart_rx_interrupt_enable(true);
sched_register_task(&start_rx);
sched_register_task(&transmit_packet);
sched_register_task(&start);
sched_register_task(&process_uart_rx_fifo);
current_state = STATE_CONFIG_DIRECTION;
sched_post_task(&start);
sched_post_task(&process_uart_rx_fifo);
}
// TODO document state diagram
static void switch_state(state_t new_state)
{
switch(new_state)
{
case D7ASP_STATE_MASTER:
switch(d7asp_state)
{
case D7ASP_STATE_IDLE:
d7asp_state = new_state;
sched_post_task(&flush_fifos);
DPRINT("Switching to state D7ASP_STATE_MASTER");
break;
case D7ASP_STATE_SLAVE_PENDING_MASTER:
d7asp_state = new_state;
sched_post_task(&flush_fifos);
DPRINT("Switching to state D7ASP_STATE_MASTER");
break;
case D7ASP_STATE_SLAVE:
d7asp_state = D7ASP_STATE_SLAVE_PENDING_MASTER;
DPRINT("Switching to state D7ASP_STATE_SLAVE_PENDING_MASTER");
break;
case D7ASP_STATE_MASTER:
// new requests in fifo, reschedule for later flushing
// TODO sched_post_task(&flush_fifos);
break;
default:
assert(false);
}
break;
case D7ASP_STATE_SLAVE:
switch(d7asp_state)
{
case D7ASP_STATE_IDLE:
d7asp_state = new_state;
current_request_id = NO_ACTIVE_REQUEST_ID;
DPRINT("Switching to state D7ASP_STATE_SLAVE");
break;
default:
assert(false);
}
break;
case D7ASP_STATE_SLAVE_PENDING_MASTER:
assert(d7asp_state == D7ASP_STATE_SLAVE);
d7asp_state = D7ASP_STATE_SLAVE_PENDING_MASTER;
DPRINT("Switching to state D7ASP_STATE_SLAVE_PENDING_MASTER");
break;
case D7ASP_STATE_IDLE:
d7asp_state = new_state;
current_request_id = NO_ACTIVE_REQUEST_ID;
DPRINT("Switching to state D7ASP_STATE_IDLE");
break;
default:
assert(false);
}
}
void bootstrap() {
DPRINT("Device booted at time: %d\n", timer_get_counter_value());
#ifndef FRAMEWORK_LOG_BINARY
console_print("\r\nPER TEST - commands:\r\n");
console_print(" CHANfffriii channel settings:\r\n");
console_print(" fff frequency : 433, 868, 915\r\n");
console_print(" r rate : L(ow) N(ormal) H(igh)\r\n");
console_print(" iii center_freq_index\r\n");
console_print(" TRANsss transmit a packet every sss seconds.\r\n");
console_print(" RECV receive packets\r\n");
console_print(" RSET reset module\r\n");
#endif
id = hw_get_unique_id();
hw_radio_init(&alloc_new_packet, &release_packet);
rx_cfg.channel_id = current_channel_id;
tx_cfg.channel_id = current_channel_id;
ubutton_register_callback(0, &userbutton_callback);
ubutton_register_callback(1, &userbutton_callback);
fifo_init(&uart_rx_fifo, uart_rx_buffer, sizeof(uart_rx_buffer));
console_set_rx_interrupt_callback(&uart_rx_cb);
console_rx_interrupt_enable();
sched_register_task(&start_rx);
sched_register_task(&transmit_packet);
sched_register_task(&start);
sched_register_task(&process_uart_rx_fifo);
current_state = STATE_CONFIG_DIRECTION;
sched_post_task(&start);
sched_post_task(&process_uart_rx_fifo);
#ifdef PLATFORM_EFM32GG_STK3700
#else
char str[20];
channel_id_to_string(¤t_channel_id, str, sizeof(str));
lcd_write_line(6, str);
#endif
timer_post_task(&transmit_packet, TIMER_TICKS_PER_SEC * 1);
}
static void process_uart_rx_fifo()
{
if(fifo_get_size(&uart_rx_fifo) >= COMMAND_SIZE)
{
uint8_t received_cmd[COMMAND_SIZE];
fifo_pop(&uart_rx_fifo, received_cmd, COMMAND_SIZE);
if(strncmp(received_cmd, COMMAND_CHAN, COMMAND_SIZE) == 0)
{
process_command_chan();
}
else if(strncmp(received_cmd, COMMAND_TRAN, COMMAND_SIZE) == 0)
{
while(fifo_get_size(&uart_rx_fifo) < COMMAND_TRAN_PARAM_SIZE);
char param[COMMAND_TRAN_PARAM_SIZE];
fifo_pop(&uart_rx_fifo, param, COMMAND_TRAN_PARAM_SIZE);
tx_packet_delay_s = atoi(param);
DPRINT("performing TRAN command with %d tx_packet_delay_s\r\n",
tx_packet_delay_s);
stop();
is_mode_rx = false;
current_state = STATE_RUNNING;
sched_post_task(&start);
}
else if(strncmp(received_cmd, COMMAND_RECV, COMMAND_SIZE) == 0)
{
DPRINT("entering RECV mode\r\n");
stop();
is_mode_rx = true;
current_state = STATE_RUNNING;
sched_post_task(&start);
}
else if(strncmp(received_cmd, COMMAND_RSET, COMMAND_SIZE) == 0)
{
DPRINT("resetting...\r\n");
hw_reset();
}
else
{
char err[40];
DPRINT("ERROR invalid command %.4s\n\r", received_cmd);
}
fifo_clear(&uart_rx_fifo);
}
timer_post_task_delay(&process_uart_rx_fifo, TIMER_TICKS_PER_SEC);
}
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();
}
void button_task()
{
button_id_t button_id = NUM_USERBUTTONS;
ubutton_callback_t callback = 0x0;
start_atomic();
for(int i = 0; i < NUM_USERBUTTONS;i++)
{
for(;buttons[i].cur_callback_id < BUTTON_QUEUE_SIZE && buttons[i].callbacks[buttons[i].cur_callback_id] == 0x0; buttons[i].cur_callback_id++);
if(buttons[i].cur_callback_id < BUTTON_QUEUE_SIZE)
{
callback = buttons[i].callbacks[buttons[i].cur_callback_id];
button_id = i;
buttons[i].cur_callback_id++;
break;
}
}
end_atomic();
if(button_id < NUM_USERBUTTONS && callback != 0x0)
{
//reschedule the task to do the next callback (if needed)
sched_post_task(&button_task);
callback(button_id);
}
}
static void on_request_completed()
{
assert(d7asp_state == D7ASP_STATE_MASTER);
if(!bitmap_get(current_master_session.progress_bitmap, current_request_id))
{
current_request_retry_count++;
// the request may be retransmitted, don't free yet (this will be done in flush_fifo() when failed)
}
else
{
// request completed, no retries needed so we can free the packet
packet_queue_free_packet(current_request_packet);
// terminate the dialog if all request handled
// we need to switch to the state idle otherwise we may receive a new packet before the task flush_fifos is handled
// in this case, we may assert since the state remains MASTER
if (current_request_id == current_master_session.next_request_id - 1)
{
flush_completed();
return;
}
current_request_id = NO_ACTIVE_REQUEST_ID;
}
sched_post_task(&flush_fifos); // continue flushing until all request handled ...
}
void bootstrap()
{
hw_radio_init(NULL, NULL);
sched_register_task(&read_rssi);
sched_register_task(&start_rx);
sched_post_task(&start_rx);
}
static void process_uart_rx_fifo()
{
if(fifo_get_size(&uart_rx_fifo) >= COMMAND_SIZE)
{
uint8_t received_cmd[COMMAND_SIZE];
fifo_pop(&uart_rx_fifo, received_cmd, COMMAND_SIZE);
if(strncmp(received_cmd, COMMAND_CHAN, COMMAND_SIZE) == 0)
{
process_command_chan();
}
else if(strncmp(received_cmd, COMMAND_TRAN, COMMAND_SIZE) == 0)
{
while(fifo_get_size(&uart_rx_fifo) < COMMAND_TRAN_PARAM_SIZE);
char param[COMMAND_TRAN_PARAM_SIZE];
fifo_pop(&uart_rx_fifo, param, COMMAND_TRAN_PARAM_SIZE);
tx_packet_delay_s = atoi(param);
stop();
is_mode_rx = false;
current_state = STATE_RUNNING;
sched_post_task(&start);
}
else if(strncmp(received_cmd, COMMAND_RECV, COMMAND_SIZE) == 0)
{
stop();
is_mode_rx = true;
current_state = STATE_RUNNING;
sched_post_task(&start);
}
else if(strncmp(received_cmd, COMMAND_RSET, COMMAND_SIZE) == 0)
{
hw_reset();
}
else
{
char err[40];
snprintf(err, sizeof(err), "ERROR invalid command %.4s\n", received_cmd);
uart_transmit_string(err);
}
fifo_clear(&uart_rx_fifo);
}
timer_post_task_delay(&process_uart_rx_fifo, TIMER_TICKS_PER_SEC);
}
static void packet_received(hw_radio_packet_t* packet) {
uint16_t crc = __builtin_bswap16(crc_calculate(packet->data, packet->length - 2));
if(memcmp(&crc, packet->data + packet->length + 1 - 2, 2) != 0)
{
DPRINT("CRC error");
missed_packets_counter++;
}
else
{
#if HW_NUM_LEDS > 0
led_toggle(0);
#endif
uint16_t msg_counter = 0;
uint64_t msg_id;
memcpy(&msg_id, packet->data + 1, sizeof(msg_id));
memcpy(&msg_counter, packet->data + 1 + sizeof(msg_id), sizeof(msg_counter));
char chan[8];
channel_id_to_string(&(packet->rx_meta.rx_cfg.channel_id), chan, sizeof(chan));
console_printf("%7s,%i,%i,%lu,%lu,%i\n", chan, msg_counter, packet->rx_meta.rssi, (unsigned long)msg_id, (unsigned long)id, packet->rx_meta.timestamp);
if(counter == 0)
{
// just start, assume received all previous counters to reset PER to 0%
received_packets_counter = msg_counter - 1;
counter = msg_counter - 1;
}
uint16_t expected_counter = counter + 1;
if(msg_counter == expected_counter)
{
received_packets_counter++;
counter++;
}
else if(msg_counter > expected_counter)
{
missed_packets_counter += msg_counter - expected_counter;
counter = msg_counter;
}
else
{
sched_post_task(&start);
}
double per = 0;
if(msg_counter > 0)
per = 100.0 - ((double)received_packets_counter / (double)msg_counter) * 100.0;
sprintf(lcd_msg, "%i %i", (int)per, packet->rx_meta.rssi);
#ifdef PLATFORM_EFM32GG_STK3700
lcd_write_string(lcd_msg);
#else
lcd_write_line(4, lcd_msg);
#endif
}
}
static void process_rx_fifo(void *arg) {
if(!parsed_header) {
// <sync byte (0xC0)><version (0x00)><length of ALP command (1 byte)><ALP command> // TODO CRC
if(fifo_get_size(&rx_fifo) > SERIAL_ALP_FRAME_HEADER_SIZE) {
uint8_t header[SERIAL_ALP_FRAME_HEADER_SIZE];
fifo_peek(&rx_fifo, header, 0, SERIAL_ALP_FRAME_HEADER_SIZE);
DPRINT_DATA(header, 3); // TODO tmp
if(header[0] != SERIAL_ALP_FRAME_SYNC_BYTE || header[1] != SERIAL_ALP_FRAME_VERSION) {
fifo_skip(&rx_fifo, 1);
DPRINT("skip");
parsed_header = false;
payload_len = 0;
if(fifo_get_size(&rx_fifo) > SERIAL_ALP_FRAME_HEADER_SIZE)
sched_post_task(&process_rx_fifo);
return;
}
parsed_header = true;
fifo_skip(&rx_fifo, SERIAL_ALP_FRAME_HEADER_SIZE);
payload_len = header[2];
DPRINT("found header, payload size = %i", payload_len);
sched_post_task(&process_rx_fifo);
}
} else {
if(fifo_get_size(&rx_fifo) < payload_len) {
DPRINT("payload not complete yet");
return;
}
// payload complete, start parsing
// rx_fifo can be bigger than the current serial packet, init a subview fifo
// which is restricted to payload_len so we can't parse past this packet.
fifo_t payload_fifo;
fifo_init_subview(&payload_fifo, &rx_fifo, 0, payload_len);
process_serial_frame(&payload_fifo);
// pop parsed bytes from original fifo
fifo_skip(&rx_fifo, payload_len - fifo_get_size(&payload_fifo));
parsed_header = false;
}
}
static void uart_rx_cb(uint8_t data)
{
if( echo ) {
console_print_byte(data);
if( data == '\r' ) { console_print_byte('\n'); }
}
error_t err;
err = fifo_put(&cmd_fifo, &data, 1); assert(err == SUCCESS);
if(!sched_is_scheduled(&process_cmd_fifo))
sched_post_task(&process_cmd_fifo);
}
void userbutton_callback(button_id_t button_id)
{
// change channel and restart
use_manual_channel_switching = true;
switch(button_id)
{
case 0: switch_prev_channel(); break;
case 1: switch_next_channel(); break;
}
sched_post_task(&start_rx);
}
static void button_callback(pin_id_t pin_id, uint8_t event_mask)
{
for(int i = 0; i < NUM_USERBUTTONS;i++)
{
if(hw_gpio_pin_matches(buttons[i].button_id, pin_id))
{
//set cur_callback_id to 0 to trigger all registered callbacks and post a task to do the actual callbacks
buttons[i].cur_callback_id = 0;
sched_post_task(&button_task);
}
}
}
void bootstrap()
{
DPRINT("Device booted at time: %d\n", timer_get_counter_value()); // TODO not printed for some reason, debug later
data[0] = PACKET_LENGTH-1;
int i = 1;
for (;i<PACKET_LENGTH;i++)
data[i] = i;
hw_radio_init(&alloc_new_packet, &release_packet);
tx_packet->tx_meta.tx_cfg = tx_cfg;
#ifdef RX_MODE
sched_register_task(&start_rx);
sched_post_task(&start_rx);
#else
sched_register_task(&transmit_packet);
sched_post_task(&transmit_packet);
#endif
}
// TODO doc
// ATx\r : shell command, where x is a char which maps to a command.
// List of supported commands:
// - R: reboot device
// AT$<command handler id> : command to be handled by the command handler specified. The command handler id is a byte < 65 (non ASCII)
// The handlers are passed the command fifo (including the header) and are responsible for pop()-ing the bytes which are processed by the handler.
// When the fifo does not yet contain a full command which can be processed by the specific handler nothing should be popped and the handler will
// called again later when more data is received.
static void process_cmd_fifo()
{
if(fifo_get_size(&cmd_fifo) >= SHELL_CMD_HEADER_SIZE)
{
uint8_t cmd_header[SHELL_CMD_HEADER_SIZE];
fifo_peek(&cmd_fifo, cmd_header, 0, SHELL_CMD_HEADER_SIZE);
if(cmd_header[0] != 'A' || cmd_header[1] != 'T')
{
// unexpected data, pop and return
// TODO log?
fifo_pop(&cmd_fifo, cmd_header, 1);
sched_post_task(&process_cmd_fifo);
return;
}
if(cmd_header[2] != '$')
{
process_shell_cmd(cmd_header[2]);
fifo_pop(&cmd_fifo, cmd_header, SHELL_CMD_HEADER_SIZE);
}
else
{
get_cmd_handler_callback(cmd_header[3])(&cmd_fifo);
}
sched_post_task(&process_cmd_fifo);
} else if(fifo_get_size(&cmd_fifo) >= 3) {
// AT[\r|\n]
uint8_t cmd_header[3];
fifo_peek(&cmd_fifo, cmd_header, 0, 3);
if( cmd_header[0] == 'A' && cmd_header[1] == 'T'
&& ( cmd_header[2] == '\r' || cmd_header[2] == '\n' ) )
{
console_print("OK\r\n");
fifo_pop(&cmd_fifo, cmd_header, 3);
}
}
}
static void userbutton_callback(button_id_t button_id)
{
stop();
switch(button_id)
{
case 0:
switch(current_state)
{
case STATE_CONFIG_DIRECTION:
current_state = STATE_CONFIG_DATARATE;
break;
case STATE_CONFIG_DATARATE:
current_state = STATE_RUNNING;
break;
case STATE_RUNNING:
current_state = STATE_CONFIG_DIRECTION;
break;
}
break;
case 1:
switch(current_state)
{
case STATE_CONFIG_DIRECTION:
is_mode_rx = !is_mode_rx;
break;
case STATE_CONFIG_DATARATE:
if(current_channel_id.channel_header.ch_class == PHY_CLASS_NORMAL_RATE)
current_channel_id.channel_header.ch_class = PHY_CLASS_LO_RATE;
else
current_channel_id.channel_header.ch_class = PHY_CLASS_NORMAL_RATE;
break;
case STATE_RUNNING:
increase_channel();
break;
}
break;
}
sched_post_task(&start);
}
void userbutton_callback(button_id_t button_id)
{
// change channel and restart
switch(button_id)
{
case 0:
if(current_channel_indexes_index > 0)
current_channel_indexes_index--;
else
current_channel_indexes_index = channel_count - 1;
break;
case 1:
if(current_channel_indexes_index < channel_count - 1)
current_channel_indexes_index++;
else
current_channel_indexes_index = 0;
}
sched_post_task(&start);
}
void userbutton_callback(button_id_t button_id)
{
switch(button_id)
{
case 0:
// TODO switch to values in dBm and use API to change instead of directly changing reg values
// change ezr eirp and restart
if(current_eirp_level < MAX_EIRP+1)
current_eirp_level -= 0x05;
else
current_eirp_level = MAX_EIRP;
//change eirp level
change_eirp();
break;
case 1:
// change channel and restart
if(current_channel_indexes_index < channel_count - 1)
current_channel_indexes_index++;
else
current_channel_indexes_index = 0;
sched_post_task(&start);
}
}
void d7asp_signal_transaction_response_period_elapsed()
{
if(d7asp_state == D7ASP_STATE_MASTER)
on_request_completed();
else if((d7asp_state == D7ASP_STATE_SLAVE) ||
(d7asp_state == D7ASP_STATE_SLAVE_PENDING_MASTER))
{
if (current_response_packet)
{
DPRINT("Discard the response since the response period is expired");
packet_queue_free_packet(current_response_packet);
current_response_packet = NULL;
}
if (d7asp_state == D7ASP_STATE_SLAVE)
switch_state(D7ASP_STATE_IDLE);
else if(d7asp_state == D7ASP_STATE_SLAVE_PENDING_MASTER)
{
switch_state(D7ASP_STATE_MASTER);
DPRINT("Schedule task to flush the fifo");
sched_post_task(&flush_fifos);
}
}
}
static void execute_csma_ca()
{
// TODO generate random channel queue
//hw_radio_set_rx(NULL, NULL, NULL); // put radio in RX but disable callbacks to make sure we don't receive packets when in this state
// TODO use correct rx cfg + it might be interesting to switch to idle first depending on calculated offset
uint16_t tx_duration = calculate_tx_duration();
timer_tick_t Tc = CONVERT_TO_TI(current_packet->d7atp_tc);
switch (dll_state)
{
case DLL_STATE_CSMA_CA_STARTED:
{
dll_tca = Tc - tx_duration;
dll_cca_started = timer_get_counter_value();
DPRINT("Tca= %i = %i - %i", dll_tca, Tc, tx_duration);
#ifndef FRAMEWORK_TIMER_RESET_COUNTER
// Adjust TCA value according the time already elapsed in the response period
if (tc_starting_time) // TODO how do manage tc_starting_time? not set for now
{
dll_tca -= dll_cca_started - tc_starting_time;
DPRINT("Adjusted Tca= %i = %i - %i", dll_tca, dll_cca_started, tc_starting_time);
}
#endif
if (dll_tca <= 0)
{
DPRINT("Tca negative, CCA failed");
// Let the upper layer decide eventually to change the channel in order to get a chance a send this frame
switch_state(DLL_STATE_IDLE);
d7anp_signal_packet_csma_ca_insertion_completed(false);
break;
}
uint16_t t_offset = 0;
csma_ca_mode_t csma_ca_mode = current_access_profile->control_csma_ca_mode;
// TODO overrule mode to UNC for subsequent requests by the requester, or a single response to a unicast request
switch(csma_ca_mode)
{
case CSMA_CA_MODE_UNC:
// no delay
dll_slot_duration = 0;
break;
case CSMA_CA_MODE_AIND: // TODO implement AIND
{
dll_slot_duration = tx_duration;
// no initial delay
break;
}
case CSMA_CA_MODE_RAIND: // TODO implement RAIND
{
dll_slot_duration = tx_duration;
uint16_t max_nr_slots = dll_tca / tx_duration;
uint16_t slots_wait = get_rnd() % max_nr_slots;
t_offset = slots_wait * tx_duration;
break;
}
case CSMA_CA_MODE_RIGD: // TODO implement RAIND
{
dll_rigd_n = 0;
dll_tca0 = dll_tca;
dll_slot_duration = (uint16_t) ((double)dll_tca0) / (2 << (dll_rigd_n));
t_offset = get_rnd() % dll_slot_duration;
break;
}
}
DPRINT("slot duration: %i t_offset: %i csma ca mode: %i", dll_slot_duration, t_offset, csma_ca_mode);
dll_to = dll_tca - t_offset;
if (t_offset > 0)
{
switch_state(DLL_STATE_CCA1);
timer_post_task_delay(&execute_cca, t_offset);
}
else
{
switch_state(DLL_STATE_CCA1);
sched_post_task(&execute_cca);
}
break;
}
case DLL_STATE_CSMA_CA_RETRY:
{
int32_t cca_duration = timer_get_counter_value() - dll_cca_started;
dll_to -= cca_duration;
DPRINT("RETRY dll_to = %i < %i ", dll_to, t_g);
if (dll_to < t_g)
{
switch_state(DLL_STATE_CCA_FAIL);
sched_post_task(&execute_csma_ca);
break;
}
dll_tca = dll_to;
dll_cca_started = timer_get_counter_value();
uint16_t t_offset = 0;
switch(current_access_profile->control_csma_ca_mode)
{
case CSMA_CA_MODE_AIND:
case CSMA_CA_MODE_RAIND:
{
uint16_t max_nr_slots = dll_tca / tx_duration;
uint16_t slots_wait = get_rnd() % max_nr_slots;
t_offset = slots_wait * tx_duration;
break;
}
case CSMA_CA_MODE_RIGD:
{
dll_rigd_n++;
dll_slot_duration = (uint16_t) ((double)dll_tca0) / (2 << (dll_rigd_n+1));
if(dll_slot_duration != 0) // TODO can be 0, validate
t_offset = get_rnd() % dll_slot_duration;
else
t_offset = 0;
DPRINT("slot duration: %i", dll_slot_duration);
break;
}
}
DPRINT("t_offset: %i", t_offset);
dll_to = dll_tca - t_offset;
if (t_offset > 0)
{
timer_post_task_delay(&execute_csma_ca, t_offset);
}
else
{
switch_state(DLL_STATE_CCA1);
sched_post_task(&execute_cca);
}
break;
}
case DLL_STATE_CCA_FAIL:
{
// TODO hw_radio_set_idle();
switch_state(DLL_STATE_IDLE);
d7anp_signal_packet_csma_ca_insertion_completed(false);
if (process_received_packets_after_tx)
{
sched_post_task(&process_received_packets);
process_received_packets_after_tx = false;
}
if (resume_fg_scan)
{
switch_state(DLL_STATE_FOREGROUND_SCAN);
hw_rx_cfg_t rx_cfg = (hw_rx_cfg_t){
.channel_id.channel_header = current_access_profile->subbands[0].channel_header,
.channel_id.center_freq_index = current_access_profile->subbands[0].channel_index_start,
.syncword_class = PHY_SYNCWORD_CLASS1,
};
hw_radio_set_rx(&rx_cfg, &packet_received, NULL);
resume_fg_scan = false;
}
break;
}
}
}
void dll_execute_scan_automation()
{
uint8_t scan_access_class = fs_read_dll_conf_active_access_class();
if(active_access_class != scan_access_class)
{
fs_read_access_class(scan_access_class, &scan_access_profile);
active_access_class = scan_access_class;
}
current_access_profile = &scan_access_profile;
if(current_access_profile->control_scan_type_is_foreground && current_access_profile->control_number_of_subbands > 0) // TODO background scan
{
assert(current_access_profile->control_number_of_subbands == 1); // TODO multiple not supported
switch_state(DLL_STATE_SCAN_AUTOMATION);
hw_rx_cfg_t rx_cfg = {
.channel_id = {
.channel_header = current_access_profile->subbands[0].channel_header,
.center_freq_index = current_access_profile->subbands[0].channel_index_start
},
.syncword_class = PHY_SYNCWORD_CLASS1
};
static void flush_fifos()
{
assert(d7asp_state == D7ASP_STATE_MASTER);
DPRINT("Flushing FIFOs");
hw_watchdog_feed(); // TODO do here?
if(current_request_id == NO_ACTIVE_REQUEST_ID)
{
// find first request which is not acked or dropped
int8_t found_next_req_index = bitmap_search(current_master_session.progress_bitmap, false, MODULE_D7AP_FIFO_MAX_REQUESTS_COUNT);
if(found_next_req_index == -1 || found_next_req_index == current_master_session.next_request_id)
{
// we handled all requests ...
flush_completed();
// TODO move callback to ALP?
// if(d7asp_init_args != NULL && d7asp_init_args->d7asp_fifo_flush_completed_cb != NULL)
// d7asp_init_args->d7asp_fifo_flush_completed_cb(fifo.token, fifo.progress_bitmap, fifo.success_bitmap, REQUESTS_BITMAP_BYTE_COUNT);
return;
}
current_request_id = found_next_req_index;
current_request_retry_count = 0;
current_request_packet = packet_queue_alloc_packet();
packet_queue_mark_processing(current_request_packet);
current_request_packet->d7anp_addressee = &(current_master_session.config.addressee); // TODO explicitly pass addressee down the stack layers?
memcpy(current_request_packet->payload, current_master_session.request_buffer + current_master_session.requests_indices[current_request_id], current_master_session.requests_lengths[current_request_id]);
current_request_packet->payload_length = current_master_session.requests_lengths[current_request_id];
// TODO calculate Tl and Tc
// Tc(NB, LEN, CH) = (SFC * NB + 1) * TTX(CH, LEN) + TG with NB the number of concurrent devices and SF the collision Avoidance Spreading Factor
// Tl should correspond to the maximum time needed to send the remaining requests in the FIFO including the RETRY parameter
// For now, set Tc and Tl according the transmission_timeout_period set in the access profile
dae_access_profile_t active_addressee_access_profile;
fs_read_access_class(current_request_packet->d7anp_addressee->ctrl.access_class, &active_addressee_access_profile);
current_request_packet->d7atp_tc = active_addressee_access_profile.transmission_timeout_period;
current_request_packet->d7anp_listen_timeout = active_addressee_access_profile.transmission_timeout_period;
}
else
{
// retrying request ...
DPRINT("Current request retry count: %i", current_request_retry_count);
if(current_request_retry_count == single_request_retry_limit)
{
// mark request as failed and pop
mark_current_request_done();
DPRINT("Request reached single request retry limit (%i), skipping request", single_request_retry_limit);
packet_queue_free_packet(current_request_packet);
current_request_id = NO_ACTIVE_REQUEST_ID;
sched_post_task(&flush_fifos); // continue flushing until all request handled ...
return;
}
// TODO stop on error
}
// TODO calculate D7ANP timeout (and update during transaction lifetime) (based on Tc, channel, cs, payload size, # msgs, # retries)
d7atp_start_dialog(current_master_session.token, current_request_id, (current_request_id == current_master_session.next_request_id - 1), current_request_packet, ¤t_master_session.config.qos);
}
void rssi_valid(int16_t cur_rssi)
{
sched_post_task(&read_rssi);
}
static void packet_transmitted(hw_radio_packet_t* hw_radio_packet)
{
assert(dll_state == DLL_STATE_TX_FOREGROUND);
switch_state(DLL_STATE_TX_FOREGROUND_COMPLETED);
DPRINT("Transmitted packet with length = %i", hw_radio_packet->length);
packet_t* packet = packet_queue_find_packet(hw_radio_packet);
d7anp_signal_packet_transmitted(packet);
if(process_received_packets_after_tx)
{
sched_post_task(&process_received_packets);
process_received_packets_after_tx = false;
}
#ifdef RESPONDER_USE_FG_SCAN_OUTSIDE_TRANSACTION // TODO validate if still needed, if yes: needs to be tested
/*
* Resume the FG scan only after an unicast packet, otherwise, wait the
* response period expiration.
*/
if (resume_fg_scan && packet->dll_header.control_target_address_set)
{
switch_state(DLL_STATE_FOREGROUND_SCAN);
hw_rx_cfg_t rx_cfg = (hw_rx_cfg_t){
.channel_id.channel_header = current_access_profile->subbands[0].channel_header,
.channel_id.center_freq_index = current_access_profile->subbands[0].channel_index_start,
.syncword_class = PHY_SYNCWORD_CLASS1,
};
hw_radio_set_rx(&rx_cfg, &packet_received, NULL);
resume_fg_scan = false;
}
#else
if (resume_fg_scan)
{
switch_state(DLL_STATE_FOREGROUND_SCAN);
hw_rx_cfg_t rx_cfg = (hw_rx_cfg_t){
.channel_id.channel_header = current_access_profile->subbands[0].channel_header,
.channel_id.center_freq_index = current_access_profile->subbands[0].channel_index_start,
.syncword_class = PHY_SYNCWORD_CLASS1,
};
hw_radio_set_rx(&rx_cfg, &packet_received, NULL);
resume_fg_scan = false;
}
#endif
}
static void cca_rssi_valid(int16_t cur_rssi)
{
// When the radio goes back to Rx state, the rssi_valid callback may be still set. Skip it in this case
if (dll_state != DLL_STATE_CCA1 && dll_state != DLL_STATE_CCA2)
return;
if (cur_rssi <= E_CCA)
{
if(dll_state == DLL_STATE_CCA1)
{
DPRINT("CCA1 RSSI: %d", cur_rssi);
switch_state(DLL_STATE_CCA2);
timer_post_task_delay(&execute_cca, 5);
return;
}
else if(dll_state == DLL_STATE_CCA2)
{
// OK, send packet
DPRINT("CCA2 RSSI: %d", cur_rssi);
DPRINT("CCA2 succeeded, transmitting ...");
// log_print_data(current_packet->hw_radio_packet.data, current_packet->hw_radio_packet.length + 1); // TODO tmp
switch_state(DLL_STATE_TX_FOREGROUND);
d7anp_signal_packet_csma_ca_insertion_completed(true);
error_t err = hw_radio_send_packet(¤t_packet->hw_radio_packet, &packet_transmitted);
assert(err == SUCCESS);
if (!resume_fg_scan)
hw_radio_set_idle(); // ensure radio goes back to IDLE after transmission instead of to RX
return;
}
}
else
{
DPRINT("Channel not clear, RSSI: %i", cur_rssi);
switch_state(DLL_STATE_CSMA_CA_RETRY);
execute_csma_ca();
//switch_state(DLL_STATE_CCA_FAIL);
//d7atp_signal_packet_csma_ca_insertion_completed(false);
}
}
static void execute_cca()
{
assert(dll_state == DLL_STATE_CCA1 || dll_state == DLL_STATE_CCA2);
hw_rx_cfg_t rx_cfg =(hw_rx_cfg_t){
.channel_id.channel_header = current_access_profile->subbands[0].channel_header,
.channel_id.center_freq_index = current_access_profile->subbands[0].channel_index_start,
.syncword_class = PHY_SYNCWORD_CLASS1,
};
hw_radio_set_rx(&rx_cfg, NULL, &cca_rssi_valid);
}
static uint16_t calculate_tx_duration()
{
int data_rate = 6; // Normal rate: 6.9 bytes/tick
// TODO select correct subband
switch (current_access_profile->subbands[0].channel_header.ch_class)
{
case PHY_CLASS_LO_RATE:
data_rate = 1; // Lo Rate: 1.2 bytes/tick
break;
case PHY_CLASS_HI_RATE:
data_rate = 20; // High rate: 20.83 byte/tick
}
uint16_t duration = (current_packet->hw_radio_packet.length / data_rate) + 1;
return duration;
}
void process_command_chan()
{
while(fifo_get_size(&uart_rx_fifo) < COMMAND_CHAN_PARAM_SIZE);
char param[COMMAND_CHAN_PARAM_SIZE];
fifo_pop(&uart_rx_fifo, param, COMMAND_CHAN_PARAM_SIZE);
channel_id_t new_channel = {
.channel_header.ch_coding = PHY_CODING_PN9
};
if(strncmp(param, "433", 3) == 0)
new_channel.channel_header.ch_freq_band = PHY_BAND_433;
else if(strncmp(param, "868", 3) == 0)
new_channel.channel_header.ch_freq_band = PHY_BAND_868;
else if(strncmp(param, "915", 3) == 0)
new_channel.channel_header.ch_freq_band = PHY_BAND_915;
else
goto error;
char channel_class = param[3];
if(channel_class == 'L')
new_channel.channel_header.ch_class = PHY_CLASS_LO_RATE;
else if(channel_class == 'N')
new_channel.channel_header.ch_class = PHY_CLASS_NORMAL_RATE;
else if(channel_class == 'H')
new_channel.channel_header.ch_class = PHY_CLASS_HI_RATE;
else
goto error;
uint16_t center_freq_index = atoi((const char*)(param + 4));
new_channel.center_freq_index = center_freq_index;
// validate
if(new_channel.channel_header.ch_freq_band == PHY_BAND_433)
{
if(new_channel.channel_header.ch_class == PHY_CLASS_NORMAL_RATE
&& (new_channel.center_freq_index % 8 != 0 || new_channel.center_freq_index > 56))
goto error;
else if(new_channel.channel_header.ch_class == PHY_CLASS_LO_RATE && new_channel.center_freq_index > 68)
goto error;
else if(new_channel.channel_header.ch_class == PHY_CLASS_HI_RATE)
goto error;
} // TODO validate PHY_BAND_868
// valid band, apply ...
rx_cfg.channel_id = new_channel;
// change channel and restart
prepare_channel_indexes();
current_channel_indexes_index = 0;
sched_post_task(&start_rx);
return;
error:
console_print("Error parsing CHAN command. Expected format example: '433L001'\n");
fifo_clear(&uart_rx_fifo);
}
void process_command_loop()
{
use_manual_channel_switching = false;
sched_post_task(&start_rx);
}
