packetbuffer.c

Go to the documentation of this file.

#include "main-header.h"
 
struct cnw_packetbuf packetbuffer1;     //CC1101
 
 
static struct cnw_packetbuf *get_buf(const int num) {
  if (num == PACKETBUFFER_CC1101) {
    return &packetbuffer1;
  } else {
    fatal_error("Invalid packet buffer %i", num);
    return NULL;
  }
}
 
void packet_buf_init(const int num) {
  void *buf = get_buf(num);
 
  if (buf == NULL) {
    return;
  }
  memset(buf, 0, sizeof(packetbuffer1));
}
 
 
void packet_init() {
  packet_buf_init(PACKETBUFFER_CC1101);
}
 
 
static void packet_buf_overflow(struct cnw_packetbuf *pkt, int num) {
  printf("Overflow in buf %i, BytesInBuf: %i\r\n", num, pkt->bytesinbuf);
  packet_buf_init(num);
}
 
int packet_put_byte(const int num, const byte b) {
  struct cnw_packetbuf *pkt;
 
  pkt = get_buf(num);
  if (pkt == NULL) {
    return -2;
  }
  if ((pkt->recvstarted != 0)
      && ((mculib_get_seconds_since_boot() - pkt->recvstarted) > 5)
      ) {
    packet_buf_init(num);
  }
  if (pkt->bytesinbuf == PACKETBUF_SIZE) {
    packet_buf_overflow(pkt, num);
    return -1;
  }
  if (pkt->recvstarted == 0) {
    pkt->recvstarted = mculib_get_seconds_since_boot();
  }
  pkt->buf[pkt->bytesinbuf] = b;
  pkt->bytesinbuf++;
  return 1;
}
 
 
void packet_mark_valid(const int num) {
  struct cnw_packetbuf *pkt;
 
  pkt = get_buf(num);
  if (pkt == NULL) {
    return;
  }
  pkt->isvalid = 1;
}
 
int packet_isvalid(const int num) {
  struct cnw_packetbuf *pkt;
 
  pkt = get_buf(num);
  if (pkt == NULL) {
    return -2;
  }
  if (pkt->isvalid) {
    return 1;
  }
  return 0;
}
 
byte *packet_getbuf(const int num) {
  struct cnw_packetbuf *pkt;
 
  pkt = get_buf(num);
  if (pkt == NULL) {
    return NULL;
  }
  return (byte *)&pkt->buf;
}
 
int packet_getbytesinbuf(const int num) {
  struct cnw_packetbuf *pkt;
 
  pkt = get_buf(num);
  if (pkt == NULL) {
    return -2;
  }
  return pkt->bytesinbuf;
}