boolean PutBowlerPacket(BowlerPacket * Packet){
Packet->use.head.ResponseFlag=1;
FixPacket(Packet);
// if(Packet->use.head.Method ==BOWLER_ASYN)
// printPacket(Packet,WARN_PRINT);
return putStream(Packet->stream,GetPacketLegnth(Packet));
}
boolean _getBowlerPacket(BowlerPacket * Packet,BYTE_FIFO_STORAGE * fifo, boolean debug){
boolean PacketCheck=false;
//uint16_t PacketLegnth=0;
Packet->stream[0]=0;
if (getNumBytes(fifo) == 0 ) {
return false; //Not enough bytes to even be a header, try back later
}
allign(Packet,fifo);
if (getNumBytes(fifo) < ((_BowlerHeaderSize)+4)) {
if(debug){
//b_println("Current num bytes: ",ERROR_PRINT);p_int(getNumBytes(fifo),ERROR_PRINT);
}
return false; //Not enough bytes to even be a header, try back later
}
FifoReadByteStream(Packet->stream,_BowlerHeaderSize,fifo);
PacketCheck=false;
while(PacketCheck==false) {
if( (Packet->use.head.ProtocolRevision != BOWLER_VERSION)
|| (CheckCRC(Packet)==false)
){
if(Packet->use.head.ProtocolRevision != BOWLER_VERSION){
b_println("first",ERROR_PRINT);
}else if(CheckCRC(Packet)==false) {
b_println("crc",ERROR_PRINT);
}
//prHEX8(Packet->use.head.ProtocolRevision,ERROR_PRINT);print_nnl(" Fifo Size=",ERROR_PRINT);p_int(calcByteCount(fifo),ERROR_PRINT);
uint8_t b;
if(getNumBytes(fifo)==0)
return false;
//StartCritical();
getStream(& b,1,fifo);//junk out one
//EndCritical();
FifoReadByteStream(Packet->stream,_BowlerHeaderSize,fifo);
}else{
if(debug){
//b_println("Got header");
}
PacketCheck=true;
}
if (getNumBytes(fifo) < minSize) {
b_println("allign packet",ERROR_PRINT);
allign(Packet,fifo);
return false; //Not enough bytes to even be a header, try back later
}
}
//PacketLegnth = Packet->use.head.DataLegnth;
uint16_t totalLen = GetPacketLegnth(Packet);
// See if all the data has arived for this packet
int32_t num = getNumBytes(fifo);
if (num >=(totalLen) ){
if(debug){
//b_println("**Found packet, ");p_int(totalLen);//print_nnl(" Bytes, pulling out of buffer");
}
//StartCritical();
getStream(Packet->stream,totalLen,fifo);
//EndCritical();
if(CheckDataCRC(Packet)){
return true;
}else{
println_E("Data CRC Failed ");printBowlerPacketDEBUG(Packet,ERROR_PRINT);
}
}
if(debug){
//b_println("Header ready, but data is not. Need: ",INFO_PRINT);p_int(totalLen,INFO_PRINT);print_nnl(" have: ",INFO_PRINT);p_int(num ,INFO_PRINT);
}
return false;
}
void advancedBowlerExample() {
/**
* User code must implement a few functions needed by the stack internally
* This Platform specific code can be stored in the Platform directory if it is universal for all
* implementations on the given Platform.
* float getMs(void) Returns the current milliseconds since the application started
* StartCritical() Starts a critical protected section of code
* EndCritical() Ends the critical section and returns to normal operation
*/
setPrintLevelInfoPrint();// enable the stack specific printer. If you wish to use this feature putCharDebug(char c) needs to be defined
printf("\r\nStarting Sample Program\r\n");
int pngtmp = GetRPCValue("_png");
if(pngtmp != _PNG) {
printf("\r\nFAIL Expected: ");
prHEX32(_PNG,INFO_PRINT);
printf(" got: ");
prHEX32(pngtmp,INFO_PRINT);
return;
}
/**
* First we are going to put together dummy array of packet data. These are examples of a _png receive and a custom response.
* These would not exist in your implementation but would come in from the physical layer
*/
BowlerPacket myPngPacket;
myPngPacket.use.head.RPC = GetRPCValue("apid");
myPngPacket.use.head.MessageID = 2;// Specify namespace 2 for the collision detect
myPngPacket.use.head.Method = BOWLER_GET;
myPngPacket.use.head.DataLegnth=4;
FixPacket(&myPngPacket);// Set up the stack content
BowlerPacket myNamespacTestPacket;
myNamespacTestPacket.use.head.RPC = GetRPCValue("rtst");
myNamespacTestPacket.use.head.Method = BOWLER_GET;
myNamespacTestPacket.use.data[0] = 37;
myNamespacTestPacket.use.head.DataLegnth=4+1;
FixPacket(&myNamespacTestPacket);// Set up the stack content
/**
* Now we begin to set up the stack features. The first step is to set up the FIFO to receive the data coming in asynchronously
*
*/
BYTE privateRXCom[sizeof(BowlerPacket)];//make the buffer at least big enough to hold one full sized packet
BYTE_FIFO_STORAGE store;//this is the FIFO data storage struct. All interactions with the circular buffer will go through this.
/**
* Next we initialize the buffer
*/
InitByteFifo(&store,// the pointer to the storage struct
privateRXCom,//pointer the the buffer
sizeof(privateRXCom));//the size of the buffer
Bowler_Init();// Start the Bowler stack
/**
* Now we are going to regester what namespaces we implement with the framework
*/
NAMESPACE_LIST * tmp =getBcsPidNamespace();
addNamespaceToList(tmp);
tmp = getBcsTestNamespace();
addNamespaceToList(tmp);
printf("\r\n# of namespaces declared= %i",getNumberOfNamespaces());
int i=0;
for(i=0; i<getNumberOfNamespaces(); i++) {
NAMESPACE_LIST * nsPtr = getNamespaceAtIndex(i);
printf("\r\nNamespace %s at index %i",nsPtr->namespaceString,i);
}
/**
* Now we load the buffer with the the packet that we "Received"
* This step would come in from the physical layer, usually on
* an interrupt on a mcu.
*/
for (i=0; i<GetPacketLegnth(&myPngPacket); i++) {
BYTE err;// this is a stack error storage byte. See Bowler/FIFO.h for response codes
BYTE b= myPngPacket.stream[i];// This would be a new byte from the physical layer
FifoAddByte(&store, b, &err);// This helper function adds the byte to the storage buffer and manages the read write pointers.
}
/**
* Next we load the new namespace packet
*/
i=0;
for (i=0; i<GetPacketLegnth(&myNamespacTestPacket); i++) {
BYTE err;// this is a stack error storage byte. See Bowler/FIFO.h for response codes
BYTE b= myNamespacTestPacket.stream[i];// This would be a new byte from the physical layer
FifoAddByte(&store, b, &err);// This helper function adds the byte to the storage buffer and manages the read write pointers.
}
printf("\r\nData loaded into packet\r\n");
/**
* We have now loaded a packet into the storage struct 'store'
* All the while we can be polling the storage struct for a new packet
*/
BowlerPacket myLocalPacket; // Declare a packet struct to catch the parsed packet from the asynchronous storage buffer
while(getNumBytes(&store)>0) {
while(Bowler_Server_Static(&myLocalPacket,// pointer to the local packet into which to store the parsed packet
&store// storage struct from which the packet will be checked and parsed.
) == FALSE) { // Returns true when a packet is found and pulled out of the buffer
// wait because there is no packet yet
}
/**
* At this point the packet has been parsed and pulled out of the buffer
* The Static server will have also called the call backs to pars the packet, so
* the response should be loaded up to send back
*/
int packetLength = GetPacketLegnth(&myLocalPacket); // helper function to get packet length
printf("\r\nPreparing to send:\r\n");
printPacket(&myLocalPacket, INFO_PRINT);
printf("\r\nSending Packet Data back out: [ ");
for(i=0; i< packetLength; i++) {
//This would be sending to the physical layer. For this example we are just printing out the data
printf(" %i ",myLocalPacket.stream[i]);
}
printf(" ] \r\n");
}
}