Im getting this kind of Packets:
55 AA 07 20 65 00 04 28 27 00 00 20 FF
55 AA 09 20 64 00 06 29 27 00 00 72 00 AA FE
Already tested through serial monitor gives me packets from above.
I’m currently building a method which separates the packet structure.
But not even the first two bytes are filled by my receiverbuffer array.
anyone a hint ?
//struct for recieve buffer
typedef struct
{
uint8_t len;
uint8_t buffer[36]; //0x24 or 36 maximum size of one packet inclunding cmd, arg, payload
} queuebuf;
//reciever used by receivedata()
queuebuf receiverbuffer;
//M365 - serial receiver
uint8_t readindex = 0;
uint8_t m365receiverstate = 0;
void setup()
{
Serial.begin(115200);
Serial2.begin(115200);
}
void loop()
{
void recievedata();
Serial.print(receiverbuffer.buffer[0]);
Serial.print(receiverbuffer.buffer[1]);
}
void recievedata()
{
uint8_t newbyte;
//Expect Packet 55 AA 07 20 65 00 04 28 27 00 00 20 FF
while (Serial2.available() > 0)
{
newbyte = Serial2.read();
switch (m365receiverstate)
{
case 0: //we are waiting for 1st byte of packet header 0x55
if (newbyte == 0x55) // = 0x55
{
m365receiverstate = 1;
receiverbuffer.buffer[0] = newbyte;
}
break;
case 1: //we are waiting for 2nd byte of packet header 0xAA
if (newbyte == 0xAA) // = 0xAA
{
m365receiverstate = 0;
receiverbuffer.buffer[1] = newbyte;
}
break;
}
}
}
