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RF24Network.cpp
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RF24Network.cpp
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/*
Copyright (C) 2011 James Coliz, Jr. <[email protected]>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
*/
#include "RF24Network_config.h"
#if defined (RF24_LINUX)
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <string.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>
#include <iostream>
#include <algorithm>
#include <RF24/RF24.h>
#include "RF24Network.h"
#else
#include "RF24.h"
#include "RF24Network.h"
#endif
#if defined(ENABLE_SLEEP_MODE) && defined(ESP8266)
#warning "Disabling sleep mode because sleep doesn't work on ESP8266"
#undef ENABLE_SLEEP_MODE
#endif
#if defined (ENABLE_SLEEP_MODE) && !defined (RF24_LINUX) && !defined (__ARDUINO_X86__)
#include <avr/sleep.h>
#include <avr/power.h>
volatile byte sleep_cycles_remaining;
volatile bool wasInterrupted;
#endif
uint16_t RF24NetworkHeader::next_id = 1;
#if defined ENABLE_NETWORK_STATS
uint32_t RF24Network::nFails = 0;
uint32_t RF24Network::nOK = 0;
#endif
uint64_t pipe_address( uint16_t node, uint8_t pipe );
#if defined (RF24NetworkMulticast)
uint16_t levelToAddress( uint8_t level );
#endif
bool is_valid_address( uint16_t node );
/******************************************************************/
#if defined (RF24_LINUX)
#if !defined (DUAL_HEAD_RADIO)
RF24Network::RF24Network( RF24& _radio ): radio(_radio), frame_size(MAX_FRAME_SIZE)
#else
RF24Network::RF24Network( RF24& _radio, RF24& _radio1 ): radio(_radio), radio1(_radio1),frame_size(MAX_FRAME_SIZE)
#endif
{
txTime=0; networkFlags=0; returnSysMsgs=0; multicastRelay=0;
}
#elif !defined (DUAL_HEAD_RADIO)
RF24Network::RF24Network( RF24& _radio ): radio(_radio), next_frame(frame_queue)
{
#if !defined ( DISABLE_FRAGMENTATION )
frag_queue.message_buffer=&frag_queue_message_buffer[0];
frag_ptr = &frag_queue;
#endif
txTime=0; networkFlags=0; returnSysMsgs=0; multicastRelay=0;
}
#else
RF24Network::RF24Network( RF24& _radio, RF24& _radio1 ): radio(_radio), radio1(_radio1), next_frame(frame_queue)
{
#if !defined ( DISABLE_FRAGMENTATION )
frag_queue.message_buffer=&frag_queue_message_buffer[0];
frag_ptr = &frag_queue;
#endif
txTime=0; networkFlags=0; returnSysMsgs=0; multicastRelay=0;
}
#endif
/******************************************************************/
void RF24Network::begin(uint8_t _channel, uint16_t _node_address )
{
if (! is_valid_address(_node_address) )
return;
node_address = _node_address;
if ( ! radio.isValid() ){
return;
}
// Set up the radio the way we want it to look
if(_channel != USE_CURRENT_CHANNEL){
radio.setChannel(_channel);
}
//radio.enableDynamicAck();
radio.setAutoAck(0,0);
#if defined (ENABLE_DYNAMIC_PAYLOADS)
radio.enableDynamicPayloads();
#endif
// Use different retry periods to reduce data collisions
uint8_t retryVar = (((node_address % 6)+1) *2) + 3;
radio.setRetries(retryVar, 5); // max about 85ms per attempt
txTimeout = 25;
routeTimeout = txTimeout*3; // Adjust for max delay per node within a single chain
#if defined (DUAL_HEAD_RADIO)
radio1.setChannel(_channel);
radio1.enableDynamicAck();
radio1.enableDynamicPayloads();
#endif
// Setup our address helper cache
setup_address();
// Open up all listening pipes
uint8_t i = 6;
while (i--){
radio.openReadingPipe(i,pipe_address(_node_address,i));
}
radio.startListening();
}
/******************************************************************/
#if defined ENABLE_NETWORK_STATS
void RF24Network::failures(uint32_t *_fails, uint32_t *_ok){
*_fails = nFails;
*_ok = nOK;
}
#endif
/******************************************************************/
uint8_t RF24Network::update(void)
{
// if there is data ready
uint8_t pipe_num;
uint8_t returnVal = 0;
// If bypass is enabled, continue although incoming user data may be dropped
// Allows system payloads to be read while user cache is full
// Incoming Hold prevents data from being read from the radio, preventing incoming payloads from being acked
#if !defined (RF24_LINUX)
if(!(networkFlags & FLAG_BYPASS_HOLDS)){
if( (networkFlags & FLAG_HOLD_INCOMING) || (next_frame-frame_queue) + 34 > MAIN_BUFFER_SIZE ){
if(!available()){
networkFlags &= ~FLAG_HOLD_INCOMING;
}else{
return 0;
}
}
}
#endif
while ( radio.isValid() && radio.available(&pipe_num) ){
#if defined (ENABLE_DYNAMIC_PAYLOADS) && !defined (XMEGA_D3)
if( (frame_size = radio.getDynamicPayloadSize() ) < sizeof(RF24NetworkHeader)){
delay(10);
continue;
}
#else
frame_size=32;
#endif
// Dump the payloads until we've gotten everything
// Fetch the payload, and see if this was the last one.
radio.read( frame_buffer, frame_size );
// Read the beginning of the frame as the header
RF24NetworkHeader *header = (RF24NetworkHeader*)(&frame_buffer);
#if defined (RF24_LINUX)
IF_SERIAL_DEBUG(printf_P("%u: MAC Received on %u %s\n\r",millis(),pipe_num,header->toString()));
if (frame_size) {
IF_SERIAL_DEBUG_FRAGMENTATION_L2(printf("%u: FRG Rcv frame size %i\n",millis(),frame_size););
IF_SERIAL_DEBUG_FRAGMENTATION_L2(printf("%u: FRG Rcv frame ",millis()); const char* charPtr = reinterpret_cast<const char*>(frame_buffer); for (uint16_t i = 0; i < frame_size; i++) { printf("%02X ", charPtr[i]); }; printf("\n\r"));
}
#else
IF_SERIAL_DEBUG(printf_P(PSTR("%lu: MAC Received on %u %s\n\r"),millis(),pipe_num,header->toString()));
IF_SERIAL_DEBUG(const uint16_t* i = reinterpret_cast<const uint16_t*>(frame_buffer + sizeof(RF24NetworkHeader));printf_P(PSTR("%lu: NET message %04x\n\r"),millis(),*i));
#endif
// Throw it away if it's not a valid address
if ( !is_valid_address(header->to_node) ){
continue;
}
uint8_t returnVal = header->type;
// Is this for us?
if ( header->to_node == node_address ){
if(header->type == NETWORK_PING){
continue;
}
if(header->type == NETWORK_ADDR_RESPONSE ){
uint16_t requester = 04444;
if(requester != node_address){
header->to_node = requester;
write(header->to_node,USER_TX_TO_PHYSICAL_ADDRESS);
delay(10);
write(header->to_node,USER_TX_TO_PHYSICAL_ADDRESS);
//printf("Fwd add response to 0%o\n",requester);
continue;
}
}
if(header->type == NETWORK_REQ_ADDRESS && node_address){
//printf("Fwd add req to 0\n");
header->from_node = node_address;
header->to_node = 0;
write(header->to_node,TX_NORMAL);
continue;
}
if( (returnSysMsgs && header->type > 127) || header->type == NETWORK_ACK ){
IF_SERIAL_DEBUG_ROUTING( printf_P(PSTR("%lu MAC: System payload rcvd %d\n"),millis(),returnVal); );
//if( (header->type < 148 || header->type > 150) && header->type != NETWORK_MORE_FRAGMENTS_NACK && header->type != EXTERNAL_DATA_TYPE && header->type!= NETWORK_LAST_FRAGMENT){
if( header->type != NETWORK_FIRST_FRAGMENT && header->type != NETWORK_MORE_FRAGMENTS && header->type != NETWORK_MORE_FRAGMENTS_NACK && header->type != EXTERNAL_DATA_TYPE && header->type!= NETWORK_LAST_FRAGMENT){
return returnVal;
}
}
if( enqueue(header) == 2 ){ //External data received
#if defined (SERIAL_DEBUG_MINIMAL)
printf("ret ext\n");
#endif
return EXTERNAL_DATA_TYPE;
}
}else{
#if defined (RF24NetworkMulticast)
if( header->to_node == 0100){
if(header->type == NETWORK_POLL ){
if( !(networkFlags & FLAG_NO_POLL) && node_address != 04444 ){
header->to_node = header->from_node;
header->from_node = node_address;
delay(parent_pipe);
write(header->to_node,USER_TX_TO_PHYSICAL_ADDRESS);
}
continue;
}
uint8_t val = enqueue(header);
if(multicastRelay){
IF_SERIAL_DEBUG_ROUTING( printf_P(PSTR("%u MAC: FWD multicast frame from 0%o to level %u\n"),millis(),header->from_node,multicast_level+1); );
write(levelToAddress(multicast_level)<<3,4);
}
if( val == 2 ){ //External data received
//Serial.println("ret ext multicast");
return EXTERNAL_DATA_TYPE;
}
}else{
write(header->to_node,1); //Send it on, indicate it is a routed payload
}
#else
write(header->to_node,1); //Send it on, indicate it is a routed payload
#endif
}
}
return returnVal;
}
#if defined (RF24_LINUX)
/******************************************************************/
uint8_t RF24Network::enqueue(RF24NetworkHeader* header) {
uint8_t result = false;
RF24NetworkFrame frame = RF24NetworkFrame(*header,frame_buffer+sizeof(RF24NetworkHeader),frame_size-sizeof(RF24NetworkHeader));
bool isFragment = ( frame.header.type == NETWORK_FIRST_FRAGMENT || frame.header.type == NETWORK_MORE_FRAGMENTS || frame.header.type == NETWORK_LAST_FRAGMENT || frame.header.type == NETWORK_MORE_FRAGMENTS_NACK);
// This is sent to itself
if (frame.header.from_node == node_address) {
if (isFragment) {
printf("Cannot enqueue multi-payload frames to self\n");
result = false;
}else{
frame_queue.push(frame);
result = true;
}
}else
if (isFragment)
{
//The received frame contains the a fragmented payload
//Set the more fragments flag to indicate a fragmented frame
IF_SERIAL_DEBUG_FRAGMENTATION_L2(printf("%u: FRG Payload type %d of size %i Bytes with fragmentID '%i' received.\n\r",millis(),frame.header.type,frame.message_size,frame.header.reserved););
//Append payload
result = appendFragmentToFrame(frame);
//The header.reserved contains the actual header.type on the last fragment
if ( result && frame.header.type == NETWORK_LAST_FRAGMENT) {
IF_SERIAL_DEBUG_FRAGMENTATION(printf("%u: FRG Last fragment received. \n",millis() ););
IF_SERIAL_DEBUG(printf_P(PSTR("%u: NET Enqueue assembled frame @%x "),millis(),frame_queue.size()));
RF24NetworkFrame *f = &(frameFragmentsCache[ frame.header.from_node ] );
result=f->header.type == EXTERNAL_DATA_TYPE ? 2 : 1;
//Load external payloads into a separate queue on linux
if(result == 2){
external_queue.push( frameFragmentsCache[ frame.header.from_node ] );
}else{
frame_queue.push( frameFragmentsCache[ frame.header.from_node ] );
}
frameFragmentsCache.erase( frame.header.from_node );
}
}else{// if (frame.header.type <= MAX_USER_DEFINED_HEADER_TYPE) {
//This is not a fragmented payload but a whole frame.
IF_SERIAL_DEBUG(printf_P(PSTR("%u: NET Enqueue @%x "),millis(),frame_queue.size()));
// Copy the current frame into the frame queue
result=frame.header.type == EXTERNAL_DATA_TYPE ? 2 : 1;
//Load external payloads into a separate queue on linux
if(result == 2){
external_queue.push( frame );
}else{
frame_queue.push( frame );
}
}/* else {
//Undefined/Unknown header.type received. Drop frame!
IF_SERIAL_DEBUG_MINIMAL( printf("%u: FRG Received unknown or system header type %d with fragment id %d\n",millis(),frame.header.type, frame.header.reserved); );
//The frame is not explicitly dropped, but the given object is ignored.
//FIXME: does this causes problems with memory management?
}*/
if (result) {
//IF_SERIAL_DEBUG(printf("ok\n\r"));
} else {
IF_SERIAL_DEBUG(printf("failed\n\r"));
}
return result;
}
/******************************************************************/
bool RF24Network::appendFragmentToFrame(RF24NetworkFrame frame) {
// This is the first of 2 or more fragments.
if (frame.header.type == NETWORK_FIRST_FRAGMENT){
if( frameFragmentsCache.count(frame.header.from_node) != 0 ){
RF24NetworkFrame *f = &(frameFragmentsCache[ frame.header.from_node ]);
//Already rcvd first frag
if (f->header.id == frame.header.id){
return false;
}
}
if(frame.header.reserved > (uint16_t(MAX_PAYLOAD_SIZE) / max_frame_payload_size) ){
IF_SERIAL_DEBUG_FRAGMENTATION( printf("%u FRG Too many fragments in payload %u, dropping...",millis(),frame.header.reserved); );
// If there are more fragments than we can possibly handle, return
return false;
}
frameFragmentsCache[ frame.header.from_node ] = frame;
return true;
}else
if ( frame.header.type == NETWORK_MORE_FRAGMENTS || frame.header.type == NETWORK_MORE_FRAGMENTS_NACK ){
if( frameFragmentsCache.count(frame.header.from_node) < 1 ){
return false;
}
RF24NetworkFrame *f = &(frameFragmentsCache[ frame.header.from_node ]);
if( f->header.reserved - 1 == frame.header.reserved && f->header.id == frame.header.id){
// Cache the fragment
memcpy(f->message_buffer+f->message_size, frame.message_buffer, frame.message_size);
f->message_size += frame.message_size; //Increment message size
f->header = frame.header; //Update header
return true;
} else {
IF_SERIAL_DEBUG_FRAGMENTATION(printf("%u: FRG Dropping fragment for frame with header id:%d, out of order fragment(s).\n",millis(),frame.header.id););
return false;
}
}else
if ( frame.header.type == NETWORK_LAST_FRAGMENT ){
//We have received the last fragment
if(frameFragmentsCache.count(frame.header.from_node) < 1){
return false;
}
//Create pointer to the cached frame
RF24NetworkFrame *f = &(frameFragmentsCache[ frame.header.from_node ]);
if( f->message_size + frame.message_size > MAX_PAYLOAD_SIZE){
IF_SERIAL_DEBUG_FRAGMENTATION( printf("%u FRG Frame of size %u plus enqueued frame of size %u exceeds max payload size \n",millis(),frame.message_size,f->message_size); );
return false;
}
//Error checking for missed fragments and payload size
if ( f->header.reserved-1 != 1 || f->header.id != frame.header.id) {
IF_SERIAL_DEBUG_FRAGMENTATION(printf("%u: FRG Duplicate or out of sequence frame %d, expected %d. Cleared.\n",millis(),frame.header.reserved,f->header.reserved););
//frameFragmentsCache.erase( std::make_pair(frame.header.id,frame.header.from_node) );
return false;
}
//The user specified header.type is sent with the last fragment in the reserved field
frame.header.type = frame.header.reserved;
frame.header.reserved = 1;
//Append the received fragment to the cached frame
memcpy(f->message_buffer+f->message_size, frame.message_buffer, frame.message_size);
f->message_size += frame.message_size; //Increment message size
f->header = frame.header; //Update header
return true;
}
return false;
}
/******************************************************************/
/******************************************************************/
#else // Not defined RF24_Linux:
/******************************************************************/
/******************************************************************/
uint8_t RF24Network::enqueue(RF24NetworkHeader* header)
{
bool result = false;
uint16_t message_size = frame_size - sizeof(RF24NetworkHeader);
IF_SERIAL_DEBUG(printf_P(PSTR("%lu: NET Enqueue @%x "),millis(),next_frame-frame_queue));
#if !defined ( DISABLE_FRAGMENTATION )
bool isFragment = header->type == NETWORK_FIRST_FRAGMENT || header->type == NETWORK_MORE_FRAGMENTS || header->type == NETWORK_LAST_FRAGMENT || header->type == NETWORK_MORE_FRAGMENTS_NACK ;
if(isFragment){
if(header->type == NETWORK_FIRST_FRAGMENT){
// Drop frames exceeding max size and duplicates (MAX_PAYLOAD_SIZE needs to be divisible by 24)
if(header->reserved > (uint16_t(MAX_PAYLOAD_SIZE) / max_frame_payload_size) ){
#if defined (SERIAL_DEBUG_FRAGMENTATION) || defined (SERIAL_DEBUG_MINIMAL)
printf_P(PSTR("Frag frame with %d frags exceeds MAX_PAYLOAD_SIZE or out of sequence\n"),header->reserved);
#endif
frag_queue.header.reserved = 0;
return false;
}else
if(frag_queue.header.id == header->id && frag_queue.header.from_node == header->from_node){
return true;
}
if( (header->reserved * 24) > (MAX_PAYLOAD_SIZE - (next_frame-frame_queue)) ){
networkFlags |= FLAG_HOLD_INCOMING;
radio.stopListening();
}
memcpy(&frag_queue,&frame_buffer,8);
memcpy(frag_queue.message_buffer,frame_buffer+sizeof(RF24NetworkHeader),message_size);
//IF_SERIAL_DEBUG_FRAGMENTATION( Serial.print(F("queue first, total frags ")); Serial.println(header->reserved); );
//Store the total size of the stored frame in message_size
frag_queue.message_size = message_size;
--frag_queue.header.reserved;
IF_SERIAL_DEBUG_FRAGMENTATION_L2( for(int i=0; i<frag_queue.message_size;i++){ Serial.println(frag_queue.message_buffer[i],HEX); } );
return true;
}else // NETWORK_MORE_FRAGMENTS
if(header->type == NETWORK_LAST_FRAGMENT || header->type == NETWORK_MORE_FRAGMENTS || header->type == NETWORK_MORE_FRAGMENTS_NACK){
if(frag_queue.message_size + message_size > MAX_PAYLOAD_SIZE){
#if defined (SERIAL_DEBUG_FRAGMENTATION) || defined (SERIAL_DEBUG_MINIMAL)
Serial.print(F("Drop frag ")); Serial.print(header->reserved);
Serial.println(F(" Size exceeds max"));
#endif
frag_queue.header.reserved=0;
return false;
}
if( frag_queue.header.reserved == 0 || (header->type != NETWORK_LAST_FRAGMENT && header->reserved != frag_queue.header.reserved ) || frag_queue.header.id != header->id ){
#if defined (SERIAL_DEBUG_FRAGMENTATION) || defined (SERIAL_DEBUG_MINIMAL)
Serial.print(F("Drop frag ")); Serial.print(header->reserved);
//Serial.print(F(" header id ")); Serial.print(header->id);
Serial.println(F(" Out of order "));
#endif
return false;
}
memcpy(frag_queue.message_buffer+frag_queue.message_size,frame_buffer+sizeof(RF24NetworkHeader),message_size);
frag_queue.message_size += message_size;
if(header->type != NETWORK_LAST_FRAGMENT){
--frag_queue.header.reserved;
return true;
}
frag_queue.header.reserved = 0;
frag_queue.header.type = header->reserved;
IF_SERIAL_DEBUG_FRAGMENTATION( printf_P(PSTR("fq 3: %d\n"),frag_queue.message_size); );
IF_SERIAL_DEBUG_FRAGMENTATION_L2(for(int i=0; i< frag_queue.message_size;i++){ Serial.println(frag_queue.message_buffer[i],HEX); } );
//Frame assembly complete, copy to main buffer if OK
if(frag_queue.header.type == EXTERNAL_DATA_TYPE){
return 2;
}
#if defined (DISABLE_USER_PAYLOADS)
return 0;
#endif
if(MAX_PAYLOAD_SIZE - (next_frame-frame_queue) >= frag_queue.message_size){
memcpy(next_frame,&frag_queue,10);
memcpy(next_frame+10,frag_queue.message_buffer,frag_queue.message_size);
next_frame += (10+frag_queue.message_size);
#if !defined(ARDUINO_ARCH_AVR)
if(uint8_t padding = (frag_queue.message_size+10)%4){
next_frame += 4 - padding;
}
#endif
IF_SERIAL_DEBUG_FRAGMENTATION( printf_P(PSTR("enq size %d\n"),frag_queue.message_size); );
return true;
}else{
radio.stopListening();
networkFlags |= FLAG_HOLD_INCOMING;
}
IF_SERIAL_DEBUG_FRAGMENTATION( printf_P(PSTR("Drop frag payload, queue full\n")); );
return false;
}//If more or last fragments
}else //else is not a fragment
#endif // End fragmentation enabled
// Copy the current frame into the frame queue
#if !defined( DISABLE_FRAGMENTATION )
if(header->type == EXTERNAL_DATA_TYPE){
memcpy(&frag_queue,&frame_buffer,8);
frag_queue.message_buffer = frame_buffer+sizeof(RF24NetworkHeader);
frag_queue.message_size = message_size;
return 2;
}
#endif
#if defined (DISABLE_USER_PAYLOADS)
return 0;
}
#else
if(message_size + (next_frame-frame_queue) <= MAIN_BUFFER_SIZE){
memcpy(next_frame,&frame_buffer,8);
memcpy(next_frame+8,&message_size,2);
memcpy(next_frame+10,frame_buffer+8,message_size);
//IF_SERIAL_DEBUG_FRAGMENTATION( for(int i=0; i<message_size;i++){ Serial.print(next_frame[i],HEX); Serial.print(" : "); } Serial.println(""); );
next_frame += (message_size + 10);
#if !defined(ARDUINO_ARCH_AVR)
if(uint8_t padding = (message_size+10)%4){
next_frame += 4 - padding;
}
#endif
//IF_SERIAL_DEBUG_FRAGMENTATION( Serial.print("Enq "); Serial.println(next_frame-frame_queue); );//printf_P(PSTR("enq %d\n"),next_frame-frame_queue); );
result = true;
}else{
result = false;
IF_SERIAL_DEBUG(printf_P(PSTR("NET **Drop Payload** Buffer Full")));
}
return result;
}
#endif //USER_PAYLOADS_ENABLED
#endif //End not defined RF24_Linux
/******************************************************************/
bool RF24Network::available(void)
{
#if defined (RF24_LINUX)
return (!frame_queue.empty());
#else
// Are there frames on the queue for us?
return (next_frame > frame_queue);
#endif
}
/******************************************************************/
uint16_t RF24Network::parent() const
{
if ( node_address == 0 )
return -1;
else
return parent_node;
}
/******************************************************************/
/*uint8_t RF24Network::peekData(){
return frame_queue[0];
}*/
uint16_t RF24Network::peek(RF24NetworkHeader& header)
{
if ( available() )
{
#if defined (RF24_LINUX)
RF24NetworkFrame frame = frame_queue.front();
memcpy(&header,&frame.header,sizeof(RF24NetworkHeader));
return frame.message_size;
#else
RF24NetworkFrame *frame = (RF24NetworkFrame*)(frame_queue);
memcpy(&header,&frame->header,sizeof(RF24NetworkHeader));
uint16_t msg_size;
memcpy(&msg_size,frame_queue+8,2);
return msg_size;
#endif
}
return 0;
}
/******************************************************************/
uint16_t RF24Network::read(RF24NetworkHeader& header,void* message, uint16_t maxlen)
{
uint16_t bufsize = 0;
#if defined (RF24_LINUX)
if ( available() ) {
RF24NetworkFrame frame = frame_queue.front();
// How much buffer size should we actually copy?
bufsize = rf24_min(frame.message_size,maxlen);
memcpy(&header,&(frame.header),sizeof(RF24NetworkHeader));
memcpy(message,frame.message_buffer,bufsize);
IF_SERIAL_DEBUG(printf("%u: FRG message size %i\n",millis(),frame.message_size););
IF_SERIAL_DEBUG(printf("%u: FRG message ",millis()); const char* charPtr = reinterpret_cast<const char*>(message); for (uint16_t i = 0; i < bufsize; i++) { printf("%02X ", charPtr[i]); }; printf("\n\r"));
IF_SERIAL_DEBUG(printf_P(PSTR("%u: NET read %s\n\r"),millis(),header.toString()));
frame_queue.pop();
}
#else
if ( available() )
{
memcpy(&header,frame_queue,8);
memcpy(&bufsize,frame_queue+8,2);
if (maxlen > 0)
{
maxlen = rf24_min(maxlen,bufsize);
memcpy(message,frame_queue+10,maxlen);
IF_SERIAL_DEBUG(printf("%lu: NET message size %d\n",millis(),bufsize););
IF_SERIAL_DEBUG( uint16_t len = maxlen; printf_P(PSTR("%lu: NET r message "),millis());const uint8_t* charPtr = reinterpret_cast<const uint8_t*>(message);while(len--){ printf("%02x ",charPtr[len]);} printf_P(PSTR("\n\r") ) );
}
next_frame-=bufsize+10;
uint8_t padding = 0;
#if !defined(ARDUINO_ARCH_AVR)
if( (padding = (bufsize+10)%4) ){
padding = 4-padding;
next_frame -= padding;
}
#endif
memmove(frame_queue,frame_queue+bufsize+10+padding,sizeof(frame_queue)- bufsize);
//IF_SERIAL_DEBUG(printf_P(PSTR("%lu: NET Received %s\n\r"),millis(),header.toString()));
}
#endif
return bufsize;
}
#if defined RF24NetworkMulticast
/******************************************************************/
bool RF24Network::multicast(RF24NetworkHeader& header,const void* message, uint16_t len, uint8_t level){
// Fill out the header
header.to_node = 0100;
header.from_node = node_address;
return write(header, message, len, levelToAddress(level));
}
#endif
/******************************************************************/
bool RF24Network::write(RF24NetworkHeader& header,const void* message, uint16_t len){
return write(header,message,len,070);
}
/******************************************************************/
bool RF24Network::write(RF24NetworkHeader& header,const void* message, uint16_t len, uint16_t writeDirect){
//Allows time for requests (RF24Mesh) to get through between failed writes on busy nodes
while(millis()-txTime < 25){ if(update() > 127){break;} }
delayMicroseconds(200);
#if defined (DISABLE_FRAGMENTATION)
frame_size = rf24_min(len+sizeof(RF24NetworkHeader),MAX_FRAME_SIZE);
return _write(header,message,rf24_min(len,max_frame_payload_size),writeDirect);
#else
if(len <= max_frame_payload_size){
//Normal Write (Un-Fragmented)
frame_size = len + sizeof(RF24NetworkHeader);
if(_write(header,message,len,writeDirect)){
return 1;
}
txTime = millis();
return 0;
}
//Check payload size
if (len > MAX_PAYLOAD_SIZE) {
IF_SERIAL_DEBUG(printf("%u: NET write message failed. Given 'len' %d is bigger than the MAX Payload size %i\n\r",millis(),len,MAX_PAYLOAD_SIZE););
return false;
}
//Divide the message payload into chunks of max_frame_payload_size
uint8_t fragment_id = (len % max_frame_payload_size != 0) + ((len ) / max_frame_payload_size); //the number of fragments to send = ceil(len/max_frame_payload_size)
uint8_t msgCount = 0;
IF_SERIAL_DEBUG_FRAGMENTATION(printf("%lu: FRG Total message fragments %d\n\r",millis(),fragment_id););
if(header.to_node != 0100){
networkFlags |= FLAG_FAST_FRAG;
#if !defined (DUAL_HEAD_RADIO)
radio.stopListening();
#endif
}
uint8_t retriesPerFrag = 0;
uint8_t type = header.type;
bool ok = 0;
while (fragment_id > 0) {
//Copy and fill out the header
//RF24NetworkHeader fragmentHeader = header;
header.reserved = fragment_id;
if (fragment_id == 1) {
header.type = NETWORK_LAST_FRAGMENT; //Set the last fragment flag to indicate the last fragment
header.reserved = type; //The reserved field is used to transmit the header type
} else {
if (msgCount == 0) {
header.type = NETWORK_FIRST_FRAGMENT;
}else{
header.type = NETWORK_MORE_FRAGMENTS; //Set the more fragments flag to indicate a fragmented frame
}
}
uint16_t offset = msgCount*max_frame_payload_size;
uint16_t fragmentLen = rf24_min((uint16_t)(len-offset),max_frame_payload_size);
//Try to send the payload chunk with the copied header
frame_size = sizeof(RF24NetworkHeader)+fragmentLen;
ok = _write(header,((char *)message)+offset,fragmentLen,writeDirect);
if (!ok) {
delay(2);
++retriesPerFrag;
}else{
retriesPerFrag = 0;
fragment_id--;
msgCount++;
}
//if(writeDirect != 070){ delay(2); } //Delay 2ms between sending multicast payloads
if (!ok && retriesPerFrag >= 3) {
IF_SERIAL_DEBUG_FRAGMENTATION(printf("%lu: FRG TX with fragmentID '%d' failed after %d fragments. Abort.\n\r",millis(),fragment_id,msgCount););
break;
}
//Message was successful sent
#if defined SERIAL_DEBUG_FRAGMENTATION_L2
printf("%lu: FRG message transmission with fragmentID '%d' sucessfull.\n\r",millis(),fragment_id);
#endif
}
header.type = type;
#if !defined (DUAL_HEAD_RADIO)
if(networkFlags & FLAG_FAST_FRAG){
ok = radio.txStandBy(txTimeout);
radio.startListening();
radio.setAutoAck(0,0);
}
networkFlags &= ~FLAG_FAST_FRAG;
if(!ok){
return false;
}
#endif
//int frag_delay = uint8_t(len/48);
//delay( rf24_min(len/48,20));
//Return true if all the chunks where sent successfully
IF_SERIAL_DEBUG_FRAGMENTATION(printf("%u: FRG total message fragments sent %i. \n",millis(),msgCount); );
if(fragment_id > 0){
txTime = millis();
return false;
}
return true;
#endif //Fragmentation enabled
}
/******************************************************************/
bool RF24Network::_write(RF24NetworkHeader& header,const void* message, uint16_t len, uint16_t writeDirect)
{
// Fill out the header
header.from_node = node_address;
// Build the full frame to send
memcpy(frame_buffer,&header,sizeof(RF24NetworkHeader));
#if defined (RF24_LINUX)
IF_SERIAL_DEBUG(printf_P(PSTR("%u: NET Sending %s\n\r"),millis(),header.toString()));
#else
IF_SERIAL_DEBUG(printf_P(PSTR("%lu: NET Sending %s\n\r"),millis(),header.toString()));
#endif
if (len){
#if defined (RF24_LINUX)
memcpy(frame_buffer + sizeof(RF24NetworkHeader),message,rf24_min(frame_size-sizeof(RF24NetworkHeader),len));
IF_SERIAL_DEBUG(printf("%u: FRG frame size %i\n",millis(),frame_size););
IF_SERIAL_DEBUG(printf("%u: FRG frame ",millis()); const char* charPtr = reinterpret_cast<const char*>(frame_buffer); for (uint16_t i = 0; i < frame_size; i++) { printf("%02X ", charPtr[i]); }; printf("\n\r"));
#else
memcpy(frame_buffer + sizeof(RF24NetworkHeader),message,len);
IF_SERIAL_DEBUG(uint16_t tmpLen = len;printf_P(PSTR("%lu: NET message "),millis());const uint8_t* charPtr = reinterpret_cast<const uint8_t*>(message);while(tmpLen--){ printf("%02x ",charPtr[tmpLen]);} printf_P(PSTR("\n\r") ) );
#endif
}
// If the user is trying to send it to himself
/*if ( header.to_node == node_address ){
#if defined (RF24_LINUX)
RF24NetworkFrame frame = RF24NetworkFrame(header,message,rf24_min(MAX_FRAME_SIZE-sizeof(RF24NetworkHeader),len));
#else
RF24NetworkFrame frame(header,len);
#endif
// Just queue it in the received queue
return enqueue(frame);
}*/
// Otherwise send it out over the air
if(writeDirect != 070){
uint8_t sendType = USER_TX_TO_LOGICAL_ADDRESS; // Payload is multicast to the first node, and routed normally to the next
if(header.to_node == 0100){
sendType = USER_TX_MULTICAST;
}
if(header.to_node == writeDirect){
sendType = USER_TX_TO_PHYSICAL_ADDRESS; // Payload is multicast to the first node, which is the recipient
}
return write(writeDirect,sendType);
}
return write(header.to_node,TX_NORMAL);
}
/******************************************************************/
bool RF24Network::write(uint16_t to_node, uint8_t directTo) // Direct To: 0 = First Payload, standard routing, 1=routed payload, 2=directRoute to host, 3=directRoute to Route
{
bool ok = false;
bool isAckType = false;
if(frame_buffer[6] > 64 && frame_buffer[6] < 192 ){ isAckType=true; }
/*if( ( (frame_buffer[7] % 2) && frame_buffer[6] == NETWORK_MORE_FRAGMENTS) ){
isAckType = 0;
}*/
// Throw it away if it's not a valid address
if ( !is_valid_address(to_node) )
return false;
//Load info into our conversion structure, and get the converted address info
logicalToPhysicalStruct conversion = { to_node,directTo,0};
logicalToPhysicalAddress(&conversion);
#if defined (RF24_LINUX)
IF_SERIAL_DEBUG(printf_P(PSTR("%u: MAC Sending to 0%o via 0%o on pipe %x\n\r"),millis(),to_node,conversion.send_node,conversion.send_pipe));
#else
IF_SERIAL_DEBUG(printf_P(PSTR("%lu: MAC Sending to 0%o via 0%o on pipe %x\n\r"),millis(),to_node,conversion.send_node,conversion.send_pipe));
#endif
/**Write it*/
ok=write_to_pipe(conversion.send_node, conversion.send_pipe, conversion.multicast);
if(!ok){
#if defined (RF24_LINUX)
IF_SERIAL_DEBUG_ROUTING( printf_P(PSTR("%u: MAC Send fail to 0%o via 0%o on pipe %x\n\r"),millis(),to_node,conversion.send_node,conversion.send_pipe););
}
#else
IF_SERIAL_DEBUG_ROUTING( printf_P(PSTR("%lu: MAC Send fail to 0%o via 0%o on pipe %x\n\r"),millis(),to_node,conversion.send_node,conversion.send_pipe););
}
#endif
if( directTo == TX_ROUTED && ok && conversion.send_node == to_node && isAckType){
RF24NetworkHeader* header = (RF24NetworkHeader*)&frame_buffer;
header->type = NETWORK_ACK; // Set the payload type to NETWORK_ACK
header->to_node = header->from_node; // Change the 'to' address to the 'from' address
conversion.send_node = header->from_node;
conversion.send_pipe = TX_ROUTED;
conversion.multicast = 0;
logicalToPhysicalAddress(&conversion);
//Write the data using the resulting physical address
frame_size = sizeof(RF24NetworkHeader);
write_to_pipe(conversion.send_node, conversion.send_pipe, conversion.multicast);
//dynLen=0;
#if defined (RF24_LINUX)
IF_SERIAL_DEBUG_ROUTING( printf_P(PSTR("%u MAC: Route OK to 0%o ACK sent to 0%o\n"),millis(),to_node,header->from_node); );
#else
IF_SERIAL_DEBUG_ROUTING( printf_P(PSTR("%lu MAC: Route OK to 0%o ACK sent to 0%o\n"),millis(),to_node,header->from_node); );
#endif
}
if( ok && conversion.send_node != to_node && (directTo==0 || directTo==3) && isAckType){
#if !defined (DUAL_HEAD_RADIO)
// Now, continue listening
if(networkFlags & FLAG_FAST_FRAG){
radio.txStandBy(txTimeout);
networkFlags &= ~FLAG_FAST_FRAG;
radio.setAutoAck(0,0);
}
radio.startListening();
#endif
uint32_t reply_time = millis();
while( update() != NETWORK_ACK){
#if defined (RF24_LINUX)
delayMicroseconds(900);
#endif
if(millis() - reply_time > routeTimeout){
#if defined (RF24_LINUX)
IF_SERIAL_DEBUG_ROUTING( printf_P(PSTR("%u: MAC Network ACK fail from 0%o via 0%o on pipe %x\n\r"),millis(),to_node,conversion.send_node,conversion.send_pipe); );
#else
IF_SERIAL_DEBUG_ROUTING( printf_P(PSTR("%lu: MAC Network ACK fail from 0%o via 0%o on pipe %x\n\r"),millis(),to_node,conversion.send_node,conversion.send_pipe); );
#endif
ok=false;
break;
}
}
}
if( !(networkFlags & FLAG_FAST_FRAG) ){
#if !defined (DUAL_HEAD_RADIO)
// Now, continue listening
radio.startListening();
#endif
}
#if defined ENABLE_NETWORK_STATS
if(ok == true){
++nOK;
}else{ ++nFails;
}
#endif
return ok;
}
/******************************************************************/
// Provided the to_node and directTo option, it will return the resulting node and pipe
bool RF24Network::logicalToPhysicalAddress(logicalToPhysicalStruct *conversionInfo){
//Create pointers so this makes sense.. kind of
//We take in the to_node(logical) now, at the end of the function, output the send_node(physical) address, etc.
//back to the original memory address that held the logical information.
uint16_t *to_node = &conversionInfo->send_node;
uint8_t *directTo = &conversionInfo->send_pipe;
bool *multicast = &conversionInfo->multicast;
// Where do we send this? By default, to our parent
uint16_t pre_conversion_send_node = parent_node;
// On which pipe
uint8_t pre_conversion_send_pipe = parent_pipe;
if(*directTo > TX_ROUTED ){
pre_conversion_send_node = *to_node;