void setPWM(uint8_t counter, uint8_t compare) {
	void* tcfg0 = get_addr(TCFG0);
	
	void* v_tcntb0 = tcfg0 + (TCNTB0 & MAP_MASK);
	void* v_tcmpb0 = tcfg0 + (TCMPB0 & MAP_MASK);

	*(REG v_tcntb0) = counter;
	*(REG v_tcmpb0) = compare;
	
	release_addr(tcfg0);
}
Exemple #2
0
static void
verify_checksum (int argc, char *argv[])
{
  void *addr = NULL;
  char *bp, *ep;
  logChecksum *master, *checksums;
  unsigned short mcsum;
  int num_pages;


  if (argc != 1)
    {
      printf ("-ERR usage: vc <file>\n");
      return;
    }
  addr = get_addr (argv[0]);
  if (addr == NULL)
    {
      return;
    }

  /* set up pointers */
  bp = (char *) addr;
  ep = bp + SMR_LOG_FILE_DATA_SIZE;
  master = (logChecksum *) ep;
  checksums = master + 1;

  if (is_finalized (master))
    {
      num_pages = SMR_LOG_NUM_CHECKSUM - 1;
    }
  else
    {
      num_pages = master->off;
    }
  printf ("num_pages:%d\n", num_pages);

  mcsum = crc16 ((char *) checksums, sizeof (logChecksum) * num_pages, 0);
  if (mcsum != master->checksum)
    {
      printf ("master checksum error. expected:0x%4x master:0x%4x\n", mcsum,
	      master->checksum);
    }
  else
    {
      printf ("+OK checksum verified. 0x%4x\n", mcsum);
    }

  if (addr)
    {
      release_addr (addr);
    }
}
Exemple #3
0
static void bootp_reply(struct bootp_t *bp)
{
    BOOTPClient *bc;
    struct mbuf *m;
    struct bootp_t *rbp;
    struct sockaddr_in saddr, daddr;
    struct in_addr dns_addr;
    int dhcp_msg_type, val;
    uint8_t *q;
    int freply_nack = 0;

    /* extract exact DHCP msg type */
    dhcp_decode(bp->bp_vend, DHCP_OPT_LEN, &dhcp_msg_type);
    dprintf("bootp packet op=%d msgtype=%d\n", bp->bp_op, dhcp_msg_type);
    
    if (dhcp_msg_type == 0)
        dhcp_msg_type = DHCPREQUEST; /* Force reply for old BOOTP clients */
        
    if (dhcp_msg_type == DHCPRELEASE) {
        release_addr(&bp->bp_ciaddr);
        dprintf("released addr=%08lx\n", ntohl(bp->bp_ciaddr.s_addr));
        /* This message is not to be answered in any way. */
        return;
    }

    if (dhcp_msg_type != DHCPDISCOVER && 
        dhcp_msg_type != DHCPREQUEST)
        return;
    /* XXX: this is a hack to get the client mac address */
    memcpy(client_ethaddr, bp->bp_hwaddr, 6);
    
    if ((m = m_get()) == NULL)
        return;
    m->m_data += if_maxlinkhdr;
    rbp = (struct bootp_t *)m->m_data;
    m->m_data += sizeof(struct udpiphdr);
    memset(rbp, 0, sizeof(struct bootp_t));

    if (dhcp_msg_type == DHCPDISCOVER) {
        bc = get_new_addr(&daddr.sin_addr);
        if (!bc) {
            dprintf("no address left\n");
            return;
        }
        memcpy(bc->macaddr, client_ethaddr, 6);
    } else {
        bc = find_addr(&daddr.sin_addr, bp->bp_hwaddr);
        if (!bc) {
            /* if never assigned, reply DHCPNACK to BROADCAST.
               (windows fix because it remembers its address). */
            daddr.sin_addr.s_addr = htonl(0xffffffff);
            freply_nack = 1;
            dprintf("reply NACK\n");
        }
    }
    dprintf("offered addr=%08lx\n", ntohl(daddr.sin_addr.s_addr));

    saddr.sin_addr.s_addr = htonl(ntohl(special_addr.s_addr) | CTL_ALIAS);
    saddr.sin_port = htons(BOOTP_SERVER);

    daddr.sin_port = htons(BOOTP_CLIENT);

    rbp->bp_op = BOOTP_REPLY;
    rbp->bp_xid = bp->bp_xid;
    rbp->bp_htype = 1;
    rbp->bp_hlen = 6;
    memcpy(rbp->bp_hwaddr, bp->bp_hwaddr, 6);

    if (freply_nack)
        rbp->bp_yiaddr.s_addr = htonl(0); /* When NACK, IP address is 0. */
    else
        rbp->bp_yiaddr = daddr.sin_addr; /* Client IP address */
    rbp->bp_siaddr = saddr.sin_addr; /* Server IP address */

    q = rbp->bp_vend;
    memcpy(q, rfc1533_cookie, 4);
    q += 4;

    if (dhcp_msg_type == DHCPDISCOVER) {
        *q++ = RFC2132_MSG_TYPE;
        *q++ = 1;
        *q++ = DHCPOFFER;
    } else if (dhcp_msg_type == DHCPREQUEST) {
        *q++ = RFC2132_MSG_TYPE;
        *q++ = 1;
        if (freply_nack)
            *q++ = DHCPNACK;
        else
            *q++ = DHCPACK;
    }
        
    if (dhcp_msg_type == DHCPDISCOVER ||
        ((dhcp_msg_type == DHCPREQUEST) && !freply_nack)) {
        *q++ = RFC2132_SRV_ID;
        *q++ = 4;
        memcpy(q, &saddr.sin_addr, 4);
        q += 4;

        *q++ = RFC1533_NETMASK;
        *q++ = 4;
        *q++ = 0xff;
        *q++ = 0xff;
        *q++ = 0xff;
        *q++ = 0x00;
        
        *q++ = RFC1533_GATEWAY;
        *q++ = 4;
        memcpy(q, &saddr.sin_addr, 4);
        q += 4;
        
        *q++ = RFC1533_DNS;
        *q++ = 4;
        dns_addr.s_addr = htonl(ntohl(special_addr.s_addr) | CTL_DNS);
        memcpy(q, &dns_addr, 4);
        q += 4;

        *q++ = RFC2132_LEASE_TIME;
        *q++ = 4;
        val = htonl(LEASE_TIME);
        memcpy(q, &val, 4);
        q += 4;

        if (*slirp_hostname) {
            val = strlen(slirp_hostname);
            *q++ = RFC1533_HOSTNAME;
            *q++ = val;
            memcpy(q, slirp_hostname, val);
            q += val;
        }
    }
    *q++ = RFC1533_END;
    
    m->m_len = sizeof(struct bootp_t) - 
        sizeof(struct ip) - sizeof(struct udphdr);
    udp_output2(NULL, m, &saddr, &daddr, IPTOS_LOWDELAY);
}