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/*
* Class to handle internal communications in the machine via RS485
*
* Adrian Bowyer 3 July 2009
*
*/
#if MOTHERBOARD > 1
#include "intercom.h"
intercom::intercom()
{
pinMode(RX_ENABLE_PIN, OUTPUT);
pinMode(TX_ENABLE_PIN, OUTPUT);
digitalWrite(RX_ENABLE_PIN, 0); //always listen.
Serial1.begin(38400);
}
void intercom::sendPacket(byte address, char* string)
{
digitalWrite(TX_ENABLE_PIN, 1);
Serial1.print(address, HEX);
Serial1.print(MASTER_ADDRESS);
Serial1.println(string);
digitalWrite(TX_ENABLE_PIN, 0);
getPacket(myBuffer, IC_BUFFER);
if(myBuffer[0] != MASTER_ADDRESS[0] || myBuffer[1] != MASTER_ADDRESS[1])
{
// Horrible error - what to do?
}
}
void intercom::sendPacketWithReply(byte address, char* string, char* reply)
{
}
void intercom::getPacket(char* string, int len)
{
int i = -1;
ok = true;
do
{
while(!Serial1.available()) delay(1);
i++;
// Stop runaway buffer overflow
if(i >= len)
ok = false;
else
string[i] = Serial1.read();
} while(string[i] != '\n' && ok);
string[i] = 0;
}
#endif
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