void rx_task ()
{
uint8_t i, len, rssi;
int8_t val;
//char *local_rx_buf;
nrk_time_t check_period;
printf ("rx_task PID=%d\r\n", nrk_get_pid ());
// init bmac on channel 24
bmac_init (24);
// Enable AES 128 bit encryption
// When encryption is active, messages from plaintext
// source will still be received.
// Commented out by MB
//bmac_encryption_set_key(aes_key,16);
//bmac_encryption_enable();
// bmac_encryption_disable();
// By default the RX check rate is 200ms
// below shows how to change that
//check_period.secs=0;
//check_period.nano_secs=200*NANOS_PER_MS;
//val=bmac_set_rx_check_rate(check_period);
// The default Clear Channel Assement RSSI threshold.
// Setting this value higher means that you will only trigger
// receive with a very strong signal. Setting this lower means
// bmac will try to receive fainter packets. If the value is set
// too high or too low performance will suffer greatly.
bmac_set_cca_thresh(DEFAULT_BMAC_CCA);
// This sets the next RX buffer.
// This can be called at anytime before releaseing the packet
// if you wish to do a zero-copy buffer switch
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
while (1) {
// Wait until an RX packet is received
//val = bmac_wait_until_rx_pkt ();
//printf("Hi..\n");
// Get the RX packet
nrk_led_set (ORANGE_LED);
length1=len;
nrk_led_clr (ORANGE_LED);
// Release the RX buffer so future packets can arrive
bmac_rx_pkt_release ();
// this is necessary
nrk_wait_until_next_period ();
}
}
void rx_task() {
uint8_t i, len, rssi, *local_rx_buf;
bmac_set_cca_thresh(DEFAULT_BMAC_CCA);
bmac_rx_pkt_set_buffer ((char*)rx_buf, RF_MAX_PAYLOAD_SIZE);
while (1) {
if(cache[0]==MyOwnAddress) {
nrk_led_set(RED_LED);
}
else {
nrk_led_clr(RED_LED);
}
bmac_wait_until_rx_pkt();
nrk_led_set(ORANGE_LED);
(char*)local_rx_buf = bmac_rx_pkt_get (&len, &rssi);
for(i=0; i<len; i++) {
putchar(local_rx_buf[i]);
}
RxPacketProcess(local_rx_buf,len);
nrk_led_clr (ORANGE_LED);
bmac_rx_pkt_release();
nrk_wait_until_next_period ();
}
}
void rx_task ()
{
uint8_t rssi,len,*local_rx_buf,mole, from, received_round;;
int i,r;
bmac_set_cca_thresh(DEFAULT_BMAC_CCA);
bmac_rx_pkt_set_buffer (rx_buf,102);
//cleaning up the target sector in the flash
iap.erase(TARGET_SECTOR,TARGET_SECTOR);
while(!bmac_started());
printf("Receiver node Bmac initialised\n");
while(1) {
nrk_wait_until_next_period();
if( !bmac_rx_pkt_ready())
continue;
printf("received packet\n\r");
nrk_led_toggle(ORANGE_LED);
local_rx_buf = (uint8_t *)bmac_rx_pkt_get (&len, &rssi);
for(i=0;i<2;i++)
printf("%d", local_rx_buf[i]);
printf("\r\n");
for(i = 2; i < len; i++)
printf("0x%X ", local_rx_buf[i]);
// getting function code
for(i = 0; i < 200; i++){
code[i] = local_rx_buf[i+2];
}
//getting function size
functionSize=local_rx_buf[1];
iap.prepare(TARGET_SECTOR, TARGET_SECTOR);
//alloting space and writing the cvode in the flash
if(functionSize % 256 ==0)
r = iap.write( code, sector_start_adress[TARGET_SECTOR], 256);
else
r = iap.write( code, sector_start_adress[TARGET_SECTOR], 256);
printf("size: %d\n", functionSize + functionSize % 256);
printf( "copied: SRAM(0x%08X)->Flash(0x%08X) for %d bytes. (result=0x%08X)\r\n", code, sector_start_adress[ TARGET_SECTOR ], 1024, r );
startAddress+=functionSize;//starting Address for next functtion to be added
functionRecieved = 0;
bmac_rx_pkt_release ();
copied_function=(function) (0xE000 | 1);
//calling the copi8ed function
functionRecieved=1;
}
// pointing the function pointer to the copied code in the flash
}
int8_t control_generate (SAMPL_UPSTREAM_PKT_T * pkt,
SAMPL_DOWNSTREAM_PKT_T * ds_pkt)
{
ACK_PKT_T p;
CONTROL_PKT_T r;
uint8_t g,num_pkts, i, selected, checksum;
nrk_time_t t;
g = control_pkt_get (&r, ds_pkt->payload, 0, &checksum);
if(g==0) return NRK_ERROR;
if (checksum == r.checksum && r.mobile_reserve_seconds != 0) {
bmac_set_cca_thresh (r.cca_threshold);
if ((r.ctrl_flags_1 & GLOBAL_DEBUG_MASK) != 0)
admin_debug_flag = 1;
else
admin_debug_flag = 0;
t.secs = r.mobile_reserve_seconds;
t.nano_secs = 0;
i = nrk_reserve_set (mobile_reserve, &t, r.mobile_reserve_cnt, NULL);
// add route persistence here...
nrk_kprintf (PSTR ("Control Pkt:\r\n"));
nrk_kprintf (PSTR (" CCA:"));
printf ("%d", (int8_t) r.cca_threshold);
nrk_kprintf (PSTR ("\r\n Debug:"));
printf ("%d", (r.ctrl_flags_1 & GLOBAL_DEBUG_MASK));
nrk_kprintf (PSTR ("\r\n Mobile Reserve time:"));
printf ("%lu", r.mobile_reserve_seconds);
nrk_kprintf (PSTR (" sec\r\n Mobile Reserve count:"));
printf ("%lu", r.mobile_reserve_cnt);
nrk_kprintf (PSTR ("\r\n"));
// build ACK reply packet
p.mac_addr = my_mac;
pkt->payload_len = ack_pkt_add (&p, pkt->payload, 0);
pkt->num_msgs = 1;
pkt->pkt_type = ACK_PKT;
pkt->error_code = 0; // set error type for NCK
}
else {
nrk_kprintf (PSTR ("Control packet failed checksum\r\n"));
nrk_kprintf (PSTR (" pkt: "));
printf ("%d", r.checksum);
nrk_kprintf (PSTR (" calc: "));
printf ("%d\r\n", checksum);
// build NCK reply packet
p.mac_addr = my_mac;
pkt->payload_len = ack_pkt_add (&p, pkt->payload, 0);
pkt->num_msgs = 1;
pkt->pkt_type = ACK_PKT;
pkt->error_code = 1; // set error type for NCK
}
return NRK_OK;
}
void rx_task ()
{
uint8_t i, len, rssi;
int8_t val;
//char *local_rx_buf;
nrk_time_t check_period;
printf ("rx_task PID=%d\r\n", nrk_get_pid ());
// init bmac on channel 24
bmac_init (5);
bmac_set_cca_thresh(DEFAULT_BMAC_CCA);
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
while (1) {
// Wait until an RX packet is received
val = bmac_wait_until_rx_pkt ();
//printf("Hi..\n");
// Get the RX packet
nrk_led_set (ORANGE_LED);
local_rx_buf = bmac_rx_pkt_get (&len, &rssi);
inter_flag=0;
if(rssi<5){
dst_addr=0x0003;
//inter_tx_buf=local_rx_buf;
}
else
{
dst_addr=0x0001;
}
if(local_rx_buf[0]=='n'){
dst_addr=0x0001;
inter_tx_buf=local_rx_buf;
inter_flag=1;
}
printf("inter_flag: %d",inter_flag);
printf("\r\n");
printf("rx_buf:");
for(i=0;i<len;i++){
printf("%c",local_rx_buf[i]);
}
nrk_led_clr (ORANGE_LED);
// Release the RX buffer so future packets can arrive
bmac_rx_pkt_release ();
// this is necessary
nrk_wait_until_next_period ();
}
}
void rx_task ()
{
uint8_t i, len, rssi;
int8_t val;
char *local_rx_buf;
nrk_time_t check_period;
printf ("rx_task PID=%d\r\n", nrk_get_pid ());
// init bmac on channel 24
bmac_init (12);
bmac_set_cca_thresh(DEFAULT_BMAC_CCA);
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
rx_count = 0;
while (1) {
// Wait until an RX packet is received
if (tx_count >= 300) {
printf("Total Packet received : %d \r\n", rx_count);
}
val = bmac_wait_until_rx_pkt ();
// Get the RX packet
nrk_led_set (ORANGE_LED);
local_rx_buf = bmac_rx_pkt_get (&len, &rssi);
//if( bmac_rx_pkt_is_encrypted()==1 ) nrk_kprintf( PSTR( "Packet Encrypted\r\n" ));
if ((len > 0) && (rssi > 0)) {
printf ("Got RX packet len=%d RSSI=%d \r\n", len, rssi);
nrk_led_clr (ORANGE_LED);
rx_count++;
}
// Release the RX buffer so future packets can arrive
bmac_rx_pkt_release ();
// this is necessary
nrk_wait_until_next_period ();
}
}
/******************************************************************************************************
*
*
*Receive task execution
*
*
*
*
******************************************************************************************************/
void rx_task ()
{
uint8_t rssi,len,*local_rx_buf,v;
int receivedSeqNo=0,senderNode = 0;
bmac_set_cca_thresh(DEFAULT_BMAC_CCA);
bmac_rx_pkt_set_buffer (rx_buf,RF_MAX_PAYLOAD_SIZE);
while(!bmac_started());
printf("Receiver node Bmac initialised\n");
while(1) {
if( !bmac_rx_pkt_ready())
continue;
//printf("received packet\n\r");
nrk_led_toggle(ORANGE_LED);
local_rx_buf = (uint8_t *)bmac_rx_pkt_get (&len, &rssi);
//If my own packet then dont receive
if(local_rx_buf[SOURCE_ADDRESS_LOCATION]==MY_ID)
{
continue;
}
//Sample the data
receivedSeqNo = local_rx_buf[SEQUENCE_NUM_LOCATION];
senderNode = local_rx_buf[SOURCE_ADDRESS_LOCATION];
//Check if the message is intended for me
if(len!=0 && local_rx_buf[DESTINATION_ADDRESS_LOCATION]==MY_ID)
{
//Check the type of data
switch(local_rx_buf[MESSAGE_TYPE_LOCATION])
{
case DATA:
if(receivedSeqNo>lastReceivedSequenceNo[senderNode])
{
receiveComplete[senderNode] =0;
printf("received new packet\n\r");
//Process and send the acknowledgement to the receiver
lastReceivedSequenceNo[senderNode]=receivedSeqNo;
extractPacket(local_rx_buf,&receiveData[DATA_LOCATION(senderNode)],len,senderNode);
if(local_rx_buf[PACKET_NUM_LOCATION]==FIRST_PACKET)
{
receivedPacketSize[senderNode]=0;
receivedPacketSize[senderNode] +=(len-HEADER_SIZE);
}
else
{
receivedPacketSize[senderNode] +=(len-HEADER_SIZE);
}
//Send the acknowledgement
ack_buf[senderNode][DESTINATION_ADDRESS_LOCATION]=senderNode;
ack_buf[senderNode][SOURCE_ADDRESS_LOCATION]= MY_ID;
ack_buf[senderNode][SEQUENCE_NUM_LOCATION] = receivedSeqNo;
ack_buf[senderNode][MESSAGE_TYPE_LOCATION] = DATA_PACKET_ACK;
receiverNextPacket[senderNode]= SEND_ACK;
if(local_rx_buf[PACKET_NUM_LOCATION]==LAST_PACKET)
{
receiveComplete[senderNode] =1;
for(int i=0;i<receivedPacketSize[senderNode];i++)
{
printf("%d \t",receiveData[i]);
}
}
sendAckFlag[senderNode]=1;
}
else
{
printf("received old packet\n\r");
ack_buf[senderNode][DESTINATION_ADDRESS_LOCATION]=senderNode;
ack_buf[senderNode][SOURCE_ADDRESS_LOCATION]= MY_ID;
ack_buf[senderNode][SEQUENCE_NUM_LOCATION] = lastReceivedSequenceNo[senderNode];
ack_buf[senderNode][MESSAGE_TYPE_LOCATION] = DATA_PACKET_ACK;
//Send the acknowledgement to the sender
receiverNextPacket[senderNode]= SEND_ACK;
sendAckFlag[senderNode]=1;
}
//v=nrk_event_signal( signal_ack );
break;
case DATA_PACKET_ACK:
//If it is a new ACK packet then accept it. Else dont bother
if(lastSentSequenceNo[senderNode]==receivedSeqNo)
{
printf("Received Ack\n");
switch(sendNextPacket[senderNode])
{
case WAIT_ACK:
sendNextPacket[senderNode]= IN_PROGRESS;
printf("Sent IN_PROGRESS\n");
break;
case LAST_PACKET_ACK:
printf("Sent end_PROGRESS\n");
sendNextPacket[senderNode] = END;
break;
default:
printf("Error shouldn't have entered here");
break;
}
}
break;
default:
break;
}
}
bmac_rx_pkt_release ();
nrk_wait_until_next_period();
}
// pointing the function pointer to the copied code in the flash
}
// This task periodically sends and XMPP message through the gateway
// to an arbitrary JID on the network.
void tx_task ()
{
uint8_t cnt ;
int8_t val;
printf ("tx_task PID=%d\r\n", nrk_get_pid ());
// Configure address for other packet handlers (my not be needed)
my_mac= MY_MAC;
my_subnet_mac[0]= MY_SUBNET_MAC_0;
my_subnet_mac[1]= MY_SUBNET_MAC_1;
my_subnet_mac[2]= MY_SUBNET_MAC_2;
mac_address= (uint8_t)MY_SUBNET_MAC_2 << 24 | (uint8_t)MY_SUBNET_MAC_1 <<16 | (uint8_t)MY_SUBNET_MAC_0 << 8 | (uint8_t)MY_MAC;
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
bmac_init (15); //channel 15
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
val =
bmac_addr_decode_set_my_mac (((uint16_t) MY_SUBNET_MAC_0 << 8) | MY_MAC);
val = bmac_addr_decode_dest_mac (0xffff); // broadcast by default
bmac_addr_decode_enable ();
nrk_kprintf (PSTR ("bmac_started()\r\n"));
bmac_set_cca_thresh (-45);
cnt = 0;
while (1) {
// Build an XMPP p2p packet
p2p_pkt.pkt_type = XMPP_PKT;
p2p_pkt.ctrl_flags = LINK_ACK | MOBILE_MASK;
p2p_pkt.ack_retry = 0xf0;
p2p_pkt.ttl = 5;
p2p_pkt.src_subnet_mac[0] = MY_SUBNET_MAC_0;
p2p_pkt.src_subnet_mac[1] = MY_SUBNET_MAC_1;
p2p_pkt.src_subnet_mac[2] = MY_SUBNET_MAC_2;
p2p_pkt.src_mac = MY_MAC;
p2p_pkt.last_hop_mac = MY_MAC;
// Set destination to be any nearby gateway
p2p_pkt.dst_subnet_mac[0] = BROADCAST;
p2p_pkt.dst_subnet_mac[1] = BROADCAST;
p2p_pkt.dst_subnet_mac[2] = BROADCAST;
p2p_pkt.dst_mac = 0;
p2p_pkt.buf = tx_buf;
p2p_pkt.buf_len = P2P_PAYLOAD_START;
p2p_pkt.seq_num = cnt;
p2p_pkt.priority = 0;
p2p_pkt.check_rate = 100;
p2p_pkt.payload = &(tx_buf[P2P_PAYLOAD_START]);
// Create XMPP lite message that includes:
// 1) destination JID
// 2) Your node's password
// 3) timeout value in seconds
// 4) Message as a string (only ascii text, no XML delimiters)
//
// The total size of the packet must be under 110 bytes
// CHANGE THIS FIRST!
// Setting binary_flag to 1 will convert message into ASCII HEX format
// Setting binary_flag to 0 will send ASCII string
xp.binary_flag=0;
xp.pub_sub_flag=0;
xp.explicit_src_jid_flag=0;
xp.src_jid_size=0;
sprintf (my_passwd, "firefly");
xp.passwd = my_passwd; // This is the mobile node JID's password
sprintf (dst_jid, "vrajkuma3");
//sprintf (dst_jid, "*****@*****.**");
// JIDs without the @ symbol are set to the gateway's server
xp.dst_jid = dst_jid; // This is the destination of the message
sprintf (tst_msg, "omg, I'm trapped in an elevator, lol %d", cnt);
xp.msg = tst_msg; // This is the message body
xp.timeout = 30; // 30 second timeout for the connection
// After 30 seconds, the gateway will log the node out
// If you need to login as a different user
xp.explicit_src_jid_flag=1;
sprintf (src_jid, "vrajkuma2");
xp.src_jid = src_jid;
xp.src_jid_size=strlen(src_jid)+1;
xp.dst_jid_size=strlen(dst_jid)+1;
xp.passwd_size=strlen(my_passwd)+1;
xp.msg_size=strlen(tst_msg)+1;
// Pack the XMPP data structure into a byte sequence for sending
p2p_pkt.payload_len = xmpp_pkt_pack (&xp, p2p_pkt.payload, 0);
// Make sure it isn't too long!
if (p2p_pkt.payload_len == 0) {
nrk_kprintf (PSTR ("XMPP packet too long!\r\n"));
nrk_wait_until_next_period ();
continue;
}
cnt++;
// Lets print out what we are sending
printf ("Msg to: %s\r\n", xp.src_jid);
printf (" body: %s\r\n", xp.msg);
nrk_led_set (BLUE_LED);
// Make sure bmac checkrate is correct
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Pack data structure values in buffer before transmit
pack_peer_2_peer_packet (&p2p_pkt);
// For blocking transmits, use the following function call.
val = bmac_tx_pkt (p2p_pkt.buf, p2p_pkt.buf_len);
nrk_led_clr (BLUE_LED);
nrk_led_clr (GREEN_LED);
nrk_wait_until_next_period ();
}
}
void tx_task ()
{
// Get the signal for UART RX
//uart_rx_signal=nrk_uart_rx_signal_get();
// Register your task to wakeup on RX Data
//if(uart_rx_signal==NRK_ERROR) nrk_kprintf( PSTR("Get Signal ERROR!\r\n") );
//nrk_signal_register(uart_rx_signal);
//printf ("tx_task PID=%d\r\n", nrk_get_pid ());
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
bmac_init (26);
bmac_encryption_set_key(aes_key,16);
bmac_encryption_enable();
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
//nrk_kprintf (PSTR ("bmac_started()\r\n"));
bmac_set_cca_thresh (-45);
check_period.secs = 0;
check_period.nano_secs = 100 * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
rx_signal = bmac_get_rx_pkt_signal ();
nrk_signal_register (rx_signal);
cnt = 0;
while (1)
{
nrk_kprintf(PSTR("\r\n*************************************************************\r\n"));
nrk_kprintf(PSTR(" PHOENIX WIRELESS UPDATE SYSTEM \r\n"));
nrk_kprintf(PSTR("*************************************************************\r\n"));
nrk_kprintf(PSTR("Press 'p' : To PING Nodes in Vicinity \r\n"));
nrk_kprintf(PSTR("Press 'u' : To Begin Node Update \r\n"));
nrk_kprintf(PSTR(" \r\n"));
nrk_kprintf(PSTR("*************************************************************\r\n"));
printf("Enter Choice: ");
//sm=nrk_event_wait(SIG(uart_rx_signal));
//if(sm != SIG(uart_rx_signal))
//{
// nrk_kprintf( PSTR("UART signal error\r\n") );
// while(1);
//}
// Wait for UART signal
while(1)
{
if(nrk_uart_data_ready(NRK_DEFAULT_UART)!=0)
{
// Read Character
c=getchar();
printf( "%c\r\n",c);
break;
}
timeout.secs = 0;
timeout.nano_secs = 20 * NANOS_PER_MS;
nrk_wait(timeout);
}
// Choose mode
switch(c){
case 'p':
programState = PING;
break;
case 'u':
getDestMac();
phoenix_init();
programState = UPDATE;
break;
default:
programState = NONE;
nrk_kprintf(PSTR("Invalid Command! Please Try Again\r\n"));
}
// Reset c
c = 0;
nrk_wait_until_next_period();
// Execute protocol
switch(programState)
{
case PING:
pingMode();
break;
case UPDATE:
updateMode();
break;
case NONE:;// Do nothing
break;
default:
nrk_kprintf(PSTR("Invalid Program State\r\n"));
break;
}
nrk_wait_until_next_period ();
}
}
void tx_task ()
{
uint8_t j, i, cnt, error;
int8_t len;
int8_t rssi, val;
uint8_t *local_rx_buf;
nrk_sig_t tx_done_signal;
nrk_sig_t rx_signal;
nrk_sig_mask_t ret;
nrk_time_t check_period;
nrk_time_t timeout, start, current;
nrk_sig_mask_t my_sigs;
printf ("tx_task PID=%d\r\n", nrk_get_pid ());
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
bmac_init (26);
// Configure address for other packet handlers (my not be needed)
my_mac= MY_MAC;
my_subnet_mac[0]= MY_SUBNET_MAC_0;
my_subnet_mac[1]= MY_SUBNET_MAC_1;
my_subnet_mac[2]= MY_SUBNET_MAC_2;
mac_address= (uint8_t)MY_SUBNET_MAC_2 << 24 | (uint8_t)MY_SUBNET_MAC_1 <<16 | (uint8_t)MY_SUBNET_MAC_0 << 8 | (uint8_t)MY_MAC;
while (!bmac_started ())
nrk_wait_until_next_period ();
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
val =
bmac_addr_decode_set_my_mac (((uint16_t) MY_SUBNET_MAC_0 << 8) | MY_MAC);
val = bmac_addr_decode_dest_mac (0xffff); // broadcast by default
bmac_addr_decode_enable ();
nrk_kprintf (PSTR ("bmac_started()\r\n"));
bmac_set_cca_thresh (-45);
check_period.secs = 0;
check_period.nano_secs = 100 * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
rx_signal = bmac_get_rx_pkt_signal ();
nrk_signal_register (rx_signal);
cnt = 0;
while (1) {
// Build a TX packet by hand...
p2p_pkt.pkt_type = DATA_STORAGE_PKT;
p2p_pkt.ctrl_flags = LINK_ACK | MOBILE_MASK; // | DEBUG_FLAG ;
p2p_pkt.ack_retry = 0x0f;
p2p_pkt.ttl = 1;
p2p_pkt.src_subnet_mac[0] = MY_SUBNET_MAC_0;
p2p_pkt.src_subnet_mac[1] = MY_SUBNET_MAC_1;
p2p_pkt.src_subnet_mac[2] = MY_SUBNET_MAC_2;
p2p_pkt.src_mac = MY_MAC;
p2p_pkt.last_hop_mac = MY_MAC;
// p2p_pkt.dst_subnet_mac[0] = BROADCAST;
// p2p_pkt.dst_subnet_mac[1] = BROADCAST;
// p2p_pkt.dst_subnet_mac[2] = BROADCAST;
// p2p_pkt.dst_mac = BROADCAST;
p2p_pkt.dst_subnet_mac[0] = BROADCAST;
p2p_pkt.dst_subnet_mac[1] = BROADCAST;
p2p_pkt.dst_subnet_mac[2] = BROADCAST;
p2p_pkt.dst_mac = 0x1;
p2p_pkt.buf = tx_buf;
p2p_pkt.buf_len = P2P_PAYLOAD_START;
p2p_pkt.seq_num = cnt;
p2p_pkt.priority = 0;
p2p_pkt.check_rate = 100;
p2p_pkt.payload = &(tx_buf[P2P_PAYLOAD_START]);
cnt++;
#ifdef TEST_WRITE
data_pkt.mode=EE_WRITE;
data_pkt.addr=0x110; // Must be greater than 0x100
data_pkt.data_len=0x10;
// point the eeprom data structure to our local data buffer
data_pkt.eeprom_payload=eeprom_data;
// copy over some data
for(i=0; i<data_pkt.data_len; i++ )
data_pkt.eeprom_payload[i]=i;
#endif
#ifdef TEST_READ
data_pkt.mode=EE_READ;
data_pkt.addr=0x200; // Must be greater than 0x100
data_pkt.data_len=0x3d;
#endif
// add the eeprom pkt to the p2p pkt
p2p_pkt.payload_len= eeprom_storage_pkt_pack(&data_pkt, p2p_pkt.payload);
// Pack data structure values in buffer before transmit
pack_peer_2_peer_packet (&p2p_pkt);
nrk_led_set (BLUE_LED);
check_period.secs = 0;
check_period.nano_secs = 100 * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
nrk_kprintf( PSTR("sending: " ));
for(i=0; i<p2p_pkt.buf_len; i++ )
printf( "%u ",p2p_pkt.buf[i] );
printf( "\r\n" );
// For blocking transmits, use the following function call.
val = bmac_tx_pkt (p2p_pkt.buf, p2p_pkt.buf_len);
check_period.secs = 0;
check_period.nano_secs = FAST_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
#ifdef TXT_DEBUG
nrk_kprintf (PSTR ("\r\nSent Request:\r\n"));
#endif
nrk_led_clr (BLUE_LED);
nrk_led_clr (GREEN_LED);
// Wait for packets or timeout
nrk_time_get (&start);
while (1) {
timeout.secs = REPLY_WAIT_SECS;
timeout.nano_secs = 0;
// Wait until an RX packet is received
//val = bmac_wait_until_rx_pkt ();
if(bmac_rx_pkt_ready()==0)
{
nrk_set_next_wakeup (timeout);
my_sigs = nrk_event_wait (SIG (rx_signal) | SIG (nrk_wakeup_signal));
}
if (my_sigs == 0)
nrk_kprintf (PSTR ("Error calling nrk_event_wait()\r\n"));
if (my_sigs & SIG (rx_signal)) {
// Get the RX packet
local_rx_buf = bmac_rx_pkt_get (&len, &rssi);
// Check the packet type from raw buffer before unpacking
if ((local_rx_buf[CTRL_FLAGS] & (DS_MASK | US_MASK)) == 0) {
// Set the buffer
p2p_pkt.buf = local_rx_buf;
p2p_pkt.buf_len = len;
p2p_pkt.rssi = rssi;
unpack_peer_2_peer_packet (&p2p_pkt);
#ifdef TXT_DEBUG
if ((p2p_pkt.dst_subnet_mac[2] == MY_SUBNET_MAC_2 &&
p2p_pkt.dst_subnet_mac[1] == MY_SUBNET_MAC_1 &&
p2p_pkt.dst_subnet_mac[0] == MY_SUBNET_MAC_0 &&
p2p_pkt.dst_mac == MY_MAC )
|| p2p_pkt.dst_mac == BROADCAST)
{
nrk_led_set (GREEN_LED);
// Packet arrived and is good to go
printf ("full mac: %d %d %d %d ", p2p_pkt.src_subnet_mac[0],
p2p_pkt.src_subnet_mac[1], p2p_pkt.src_subnet_mac[2],
p2p_pkt.src_mac);
printf ("rssi: %d ", p2p_pkt.rssi);
printf ("type: %d ", p2p_pkt.pkt_type);
nrk_kprintf (PSTR ("payload: ["));
for (i = 0; i < p2p_pkt.payload_len; i++)
printf ("%d ", p2p_pkt.payload[i]);
nrk_kprintf (PSTR ("]\r\n"));
if(p2p_pkt.pkt_type== DATA_STORAGE_PKT )
{
eeprom_storage_pkt_unpack(&data_pkt, p2p_pkt.payload );
nrk_kprintf( PSTR("\r\n Storage Packet " ));
nrk_kprintf( PSTR("\r\n Mode: " ));
switch(data_pkt.mode)
{
case EE_REPLY: nrk_kprintf( PSTR( "Reply")); break;
case EE_ERROR: nrk_kprintf( PSTR( "Error" )); break;
case EE_READ: nrk_kprintf( PSTR( "Read" )); break;
case EE_WRITE: nrk_kprintf( PSTR( "Write" )); break;
default: nrk_kprintf( PSTR( "unknown" ));
}
nrk_kprintf( PSTR("\r\n From: " ));
printf( "%u",data_pkt.mac );
nrk_kprintf( PSTR("\r\n Addr: " ));
printf( "%u",data_pkt.addr);
nrk_kprintf( PSTR("\r\n Len: " ));
printf( "%u",data_pkt.data_len);
nrk_kprintf( PSTR("\r\n Data: " ));
for(i=0; i<data_pkt.data_len; i++ ) printf( "%u ",data_pkt.eeprom_payload[i]);
nrk_kprintf( PSTR("\r\n" ));
}
}
#endif
}
}
nrk_time_get (¤t);
if (start.secs + REPLY_WAIT_SECS < current.secs)
break;
// Release the RX buffer so future packets can arrive
bmac_rx_pkt_release ();
}
nrk_kprintf (PSTR ("Done Waiting for response...\r\n"));
nrk_wait_until_next_period ();
}
}
void tx_task ()
{
uint8_t j, i, error,unique;
uint8_t samples;
int8_t len;
int8_t rssi, val;
uint8_t *local_rx_buf;
nrk_sig_t tx_done_signal;
nrk_sig_t rx_signal;
nrk_sig_mask_t ret;
nrk_time_t check_period;
nrk_time_t timeout, start, current;
nrk_sig_mask_t my_sigs;
printf ("tx_task PID=%d\r\n", nrk_get_pid ());
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
bmac_init (26);
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
val=bmac_addr_decode_set_my_mac(((uint16_t)MY_SUBNET_MAC_0<<8)|MY_MAC);
val=bmac_addr_decode_dest_mac(0xffff); // broadcast by default
bmac_addr_decode_enable();
nrk_kprintf (PSTR ("bmac_started()\r\n"));
bmac_set_cca_thresh (-45);
check_period.secs = 0;
check_period.nano_secs = 100 * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
rx_signal = bmac_get_rx_pkt_signal ();
nrk_signal_register (rx_signal);
cnt = 0;
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
while (1) {
my_nlist_elements=0;
for(samples=0; samples<10; samples++ )
{
nrk_led_set (GREEN_LED);
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
build_ping_pkt( &p2p_pkt );
// Pack data structure values in buffer before transmit
pack_peer_2_peer_packet(&p2p_pkt);
// For blocking transmits, use the following function call.
val = bmac_tx_pkt (p2p_pkt.buf, p2p_pkt.buf_len);
check_period.secs = 0;
check_period.nano_secs = p2p_pkt.check_rate * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
#ifdef TXT_DEBUG
nrk_kprintf (PSTR ("\r\nSent Request:\r\n"));
#endif
nrk_led_clr (GREEN_LED);
// Wait for packets or timeout
nrk_time_get (&start);
while (1) {
timeout.secs = REPLY_WAIT_SECS;
timeout.nano_secs = 0;
// Wait until an RX packet is received
//val = bmac_wait_until_rx_pkt ();
nrk_set_next_wakeup (timeout);
my_sigs = nrk_event_wait (SIG (rx_signal) | SIG (nrk_wakeup_signal));
if (my_sigs == 0)
nrk_kprintf (PSTR ("Error calling nrk_event_wait()\r\n"));
if (my_sigs & SIG (rx_signal)) {
// Get the RX packet
local_rx_buf = bmac_rx_pkt_get (&len, &rssi);
// Check the packet type from raw buffer before unpacking
if ((local_rx_buf[CTRL_FLAGS] & (DS_MASK | US_MASK)) == 0) {
// Set the buffer
p2p_pkt.buf=local_rx_buf;
p2p_pkt.buf_len=len;
p2p_pkt.rssi=rssi;
unpack_peer_2_peer_packet(&p2p_pkt);
#ifdef TXT_DEBUG
// Check if newly received packet is for this node
if (((p2p_pkt.dst_subnet_mac[2] == MY_SUBNET_MAC_2 &&
p2p_pkt.dst_subnet_mac[1] == MY_SUBNET_MAC_1 &&
p2p_pkt.dst_subnet_mac[0] == MY_SUBNET_MAC_0 &&
p2p_pkt.dst_mac == MY_MAC )
|| p2p_pkt.dst_mac == BROADCAST)
&& p2p_pkt.pkt_type==PING_PKT) {
// Packet arrived and is good to go
printf( "src: %d ",p2p_pkt.src_mac);
printf( "rssi: %d ",p2p_pkt.rssi);
printf( "subnet: %d %d %d ",p2p_pkt.src_subnet_mac[0], p2p_pkt.src_subnet_mac[1], p2p_pkt.src_subnet_mac[2]);
printf( "type: %d ",p2p_pkt.pkt_type);
nrk_kprintf (PSTR ("payload: ["));
for (i = 0; i < p2p_pkt.payload_len; i++)
printf ("%d ", p2p_pkt.payload[i]);
nrk_kprintf (PSTR ("]\r\n"));
unique=1;
// Check if the MAC is unique
for(i=0; i<my_nlist_elements; i++ )
{
if(my_nlist[i*NLIST_SIZE]==p2p_pkt.src_subnet_mac[2] &&
my_nlist[i*NLIST_SIZE+1]==p2p_pkt.src_subnet_mac[1] &&
my_nlist[i*NLIST_SIZE+2]==p2p_pkt.src_subnet_mac[0] &&
my_nlist[i*NLIST_SIZE+3]==p2p_pkt.src_mac)
{
unique=0;
break;
}
}
// If MAC is unique, add it
if(unique)
{
my_nlist[my_nlist_elements*NLIST_SIZE]=p2p_pkt.src_subnet_mac[2];
my_nlist[my_nlist_elements*NLIST_SIZE+1]=p2p_pkt.src_subnet_mac[1];
my_nlist[my_nlist_elements*NLIST_SIZE+2]=p2p_pkt.src_subnet_mac[0];
my_nlist[my_nlist_elements*NLIST_SIZE+3]=p2p_pkt.src_mac;
my_nlist[my_nlist_elements*NLIST_SIZE+4]=p2p_pkt.rssi;
my_nlist_elements++;
}
}
#endif
}
// Release the RX buffer so future packets can arrive
bmac_rx_pkt_release ();
}
nrk_time_get (¤t);
if (start.secs + REPLY_WAIT_SECS < current.secs)
break;
}
cnt++;
}
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
nrk_kprintf (PSTR ("Done Waiting for response...\r\n"));
nrk_kprintf (PSTR ("\r\n\r\nSurvey Says:\r\n"));
nrk_kprintf( PSTR("LOC_DESC: \"location name\"\r\n" ));
for(i=0; i<my_nlist_elements; i++ )
{
nrk_kprintf( PSTR( "MAC: " ));
if(my_nlist[i*NLIST_SIZE]<0x10) printf( "0%x", my_nlist[i*NLIST_SIZE] );
else printf( "%x", my_nlist[i*NLIST_SIZE] );
if(my_nlist[i*NLIST_SIZE]<0x10) printf( "0%x", my_nlist[i*NLIST_SIZE+1] );
else printf( "%x", my_nlist[i*NLIST_SIZE+1] );
if(my_nlist[i*NLIST_SIZE]<0x10) printf( "0%x", my_nlist[i*NLIST_SIZE+2] );
else printf( "%x", my_nlist[i*NLIST_SIZE+2] );
if(my_nlist[i*NLIST_SIZE]<0x10) printf( "0%x", my_nlist[i*NLIST_SIZE+3] );
else printf( "%x", my_nlist[i*NLIST_SIZE+3] );
printf( " RSSI: %d\r\n", (int8_t)my_nlist[i*NLIST_SIZE+4] );
}
nrk_wait_until_next_period ();
}
}
void rx_task ()
{
uint8_t i, len;
uint16_t j;
int8_t rssi, val;
int8_t data_ready, button_state;
uint8_t *local_rx_buf;
uint16_t seq_num;
uint16_t pkt_cnt;
nrk_time_t check_period;
printf ("rx_task PID=%d\r\n", nrk_get_pid ());
// init bmac on channel 25
bmac_init (15);
// Enable AES 128 bit encryption
// When encryption is active, messages from plaintext
// source will still be received.
//bmac_encryption_set_key(aes_key,16);
//bmac_encryption_enable();
// bmac_encryption_disable();
// By default the RX check rate is 100ms
// below shows how to change that
//check_period.secs=0;
//check_period.nano_secs=200*NANOS_PER_MS;
//val=bmac_set_rx_check_rate(check_period);
// The default Clear Channel Assement RSSI threshold is -45
// Setting this value higher means that you will only trigger
// receive with a very strong signal. Setting this lower means
// bmac will try to receive fainter packets. If the value is set
// too high or too low performance will suffer greatly.
bmac_set_cca_thresh(-50);
//if(val==NRK_ERROR) nrk_kprintf( PSTR("ERROR setting bmac rate\r\n" ));
// This sets the next RX buffer.
// This can be called at anytime before releaseing the packet
// if you wish to do a zero-copy buffer switch
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
index=0;
while (1) {
nrk_led_clr(GREEN_LED);
nrk_led_set(RED_LED);
do {
nrk_led_toggle(BLUE_LED);
printf( "\r\nTest Data\r\n" );
for(j=0; j<index; j++ )
{
printf( "run: %u pkts: %u rssi: %d\r\n",j, data[j],rssi_avg[j] );
}
for(j=0; j<100; j++ ) nrk_wait_until_next_period ();
}while( nrk_gpio_get(NRK_BUTTON)==1 );
nrk_led_clr(BLUE_LED);
nrk_led_clr(RED_LED);
for(j=0; j<100; j++ ) nrk_wait_until_next_period ();
nrk_led_set(GREEN_LED);
pkt_cnt=0;
while(1) {
// Wait until an RX packet is received
do {
data_ready=bmac_rx_pkt_ready();
button_state=nrk_gpio_get(NRK_BUTTON);
nrk_wait_until_next_period();
} while(data_ready==0 && button_state==1 );
if(button_state==0) break;
val = bmac_wait_until_rx_pkt ();
// Get the RX packet
nrk_led_set (ORANGE_LED);
local_rx_buf = bmac_rx_pkt_get (&len, &rssi);
//if( bmac_rx_pkt_is_encrypted()==1 ) nrk_kprintf( PSTR( "Packet Encrypted\r\n" ));
//printf ("Got RX packet len=%d RSSI=%d [", len, rssi);
rssi_acc+=rssi;
seq_num=local_rx_buf[1]<<8 | local_rx_buf[0];
printf ("cnt: %u seq num: %u\r\n",pkt_cnt, seq_num);
pkt_cnt++;
nrk_led_clr (ORANGE_LED);
// Release the RX buffer so future packets can arrive
bmac_rx_pkt_release ();
}
rssi_avg[index]=rssi_acc/pkt_cnt;
data[index]=pkt_cnt;
index++;
}
}
void tx_task ()
{
uint8_t i, unique;
uint8_t samples ;
uint8_t len;
int8_t rssi, val;
uint8_t *local_rx_buf;
nrk_sig_t tx_done_signal;
nrk_sig_t rx_signal;
nrk_time_t check_period;
nrk_time_t timeout, start, current;
nrk_sig_mask_t my_sigs;
printf ("tx_task PID=%d\r\n", nrk_get_pid ());
// Wait until the tx_task starts up bmac
// This should be called by all tasks using bmac that
// do not call bmac_init()...
bmac_init (26);
bmac_rx_pkt_set_buffer (rx_buf, RF_MAX_PAYLOAD_SIZE);
val =
bmac_addr_decode_set_my_mac (((uint16_t) MY_SUBNET_MAC_0 << 8) | MY_MAC );
val = bmac_addr_decode_dest_mac (0xffff); // broadcast by default
bmac_addr_decode_enable ();
nrk_kprintf (PSTR ("bmac_started()\r\n"));
bmac_set_cca_thresh (-45);
check_period.secs = 0;
check_period.nano_secs = 100 * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Get and register the tx_done_signal if you want to
// do non-blocking transmits
tx_done_signal = bmac_get_tx_done_signal ();
nrk_signal_register (tx_done_signal);
rx_signal = bmac_get_rx_pkt_signal ();
nrk_signal_register (rx_signal);
cnt = 0;
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Main loop that does:
// 1) Sends out ping message
// 2) Collects replies, build neighbor list and then times out
// 3) Repeat 1 and 2 for 3 times
// 4) Build Extended Neighborlist packet
// 5) Send Neighbor list packet
// 6) Wait until next period and repeat 1-6
while (1) {
nrk_led_clr (ORANGE_LED);
// Set our local neighbor list to be empty
my_nlist_elements = 0;
for (samples = 0; samples < 3; samples++) {
nrk_led_set (GREEN_LED);
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
// Construct a ping packet to send (this is being built into tx_buf)
build_ping_pkt (&p2p_pkt);
// Pack data structure values in buffer before transmit
pack_peer_2_peer_packet (&p2p_pkt);
// Send the Ping packet
val = bmac_tx_pkt (p2p_pkt.buf, p2p_pkt.buf_len);
// Set update rate based on p2p reply rate.
// This is usually faster to limit congestion
check_period.secs = 0;
check_period.nano_secs = p2p_pkt.check_rate * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
#ifdef TXT_DEBUG
nrk_kprintf (PSTR ("Pinging...\r\n"));
#endif
nrk_led_clr (GREEN_LED);
// Grab start time for timeout
nrk_time_get (&start);
while (1) {
// Set the amount of time to wait for timeout
timeout.secs = REPLY_WAIT_SECS;
timeout.nano_secs = 0;
// Check if packet is already ready, or wait until one arrives
// Also set timeout to break from function if no packets come
my_sigs=0;
if (bmac_rx_pkt_ready () == 0) {
nrk_set_next_wakeup (timeout);
my_sigs =
nrk_event_wait (SIG (rx_signal) | SIG (nrk_wakeup_signal));
}
if (my_sigs == 0)
nrk_kprintf (PSTR ("Error calling nrk_event_wait()\r\n"));
if (my_sigs & SIG (rx_signal)) {
// Get the RX packet
local_rx_buf = bmac_rx_pkt_get (&len, &rssi);
// Check the packet type from raw buffer before unpacking
if ((local_rx_buf[CTRL_FLAGS] & (DS_MASK | US_MASK)) == 0) {
// Setup a p2p packet data structure with the newly received buffer
p2p_pkt.buf = local_rx_buf;
p2p_pkt.buf_len = len;
p2p_pkt.rssi = rssi;
// Unpack the data from the array into the p2p_pkt data struct
unpack_peer_2_peer_packet (&p2p_pkt);
// Check if newly received packet is for this node
if (((p2p_pkt.dst_subnet_mac[2] == MY_SUBNET_MAC_2 &&
p2p_pkt.dst_subnet_mac[1] == MY_SUBNET_MAC_1 &&
p2p_pkt.dst_subnet_mac[0] == MY_SUBNET_MAC_0 &&
p2p_pkt.dst_mac == MY_MAC )
|| p2p_pkt.dst_mac == BROADCAST)
&& (p2p_pkt.pkt_type == PING_PKT)) {
// Packet arrived and is ping pkt!
// Lets print some values out on the terminal
printf ("full mac: %d %d %d %d ", p2p_pkt.src_subnet_mac[0],
p2p_pkt.src_subnet_mac[1], p2p_pkt.src_subnet_mac[2],
p2p_pkt.src_mac);
printf ("rssi: %d ", p2p_pkt.rssi);
printf ("type: %d ", p2p_pkt.pkt_type);
nrk_kprintf (PSTR ("payload: ["));
for (i = 0; i < p2p_pkt.payload_len; i++)
printf ("%d ", p2p_pkt.payload[i]);
nrk_kprintf (PSTR ("]\r\n"));
unique = 1;
// Check if the MAC of this ping is unique or if it already
// exists in our neighbor list
for (i = 0; i < my_nlist_elements; i++) {
if (my_nlist[i * NLIST_SIZE] == p2p_pkt.src_subnet_mac[2] &&
my_nlist[i * NLIST_SIZE + 1] == p2p_pkt.src_subnet_mac[1] &&
my_nlist[i * NLIST_SIZE + 2] == p2p_pkt.src_subnet_mac[0] &&
my_nlist[i * NLIST_SIZE + 3] == p2p_pkt.src_mac) {
unique = 0;
break;
}
}
// If MAC is unique, add it to our neighbor list
if (unique) {
my_nlist[my_nlist_elements * NLIST_SIZE] =
p2p_pkt.src_subnet_mac[2];
my_nlist[my_nlist_elements * NLIST_SIZE + 1] =
p2p_pkt.src_subnet_mac[1];
my_nlist[my_nlist_elements * NLIST_SIZE + 2] =
p2p_pkt.src_subnet_mac[0];
my_nlist[my_nlist_elements * NLIST_SIZE + 3] =
p2p_pkt.src_mac;
my_nlist[my_nlist_elements * NLIST_SIZE + 4] = p2p_pkt.rssi;
my_nlist_elements++;
}
}
}
}
// Check if we are done waiting for pings
nrk_time_get (¤t);
if (start.secs + REPLY_WAIT_SECS < current.secs)
break; // exit loops waiting for pings
// Release the RX buffer so future packets can arrive
bmac_rx_pkt_release ();
// Go back to top loop to wait for more pings
}
cnt++;
// Repeat ping 3 times
}
// Now we are ready to build extended neighborlist packet and send it to gateway
check_period.secs = 0;
check_period.nano_secs = DEFAULT_CHECK_RATE * NANOS_PER_MS;
val = bmac_set_rx_check_rate (check_period);
nrk_kprintf (PSTR ("Done Waiting for response...\r\n"));
// If we have any neighbors, build the list
if (my_nlist_elements > 0) {
// Look in this function for format of extended neighborlist packet
// This function also configures the parameters and destination address
// of the p2p packet. The values are probably okay as defaults.
build_extended_neighbor_list_pkt (&p2p_pkt, my_nlist,
my_nlist_elements);
// This function takes at p2p struct and packs it into an array for sending
pack_peer_2_peer_packet (&p2p_pkt);
nrk_led_set (BLUE_LED);
// Send the list to the gateway.
val = bmac_tx_pkt (p2p_pkt.buf, p2p_pkt.buf_len);
printf ("size of pkt: %d\r\n", p2p_pkt.buf_len);
nrk_kprintf (PSTR ("sent neighbor list packet\r\n"));
nrk_led_clr (BLUE_LED);
}
else {
nrk_led_set (RED_LED);
nrk_spin_wait_us (1000);
nrk_led_clr (RED_LED);
}
// Wait a long time until we send out the pings again
// This is in a loop so that period can be small for
// other uses.
for (i = 0; i < 10; i++)
nrk_wait_until_next_period ();
// Might as well release packets that arrived during long
// break since they are not replies to your ping.
bmac_rx_pkt_release ();
}
}