text: /* flasher for HomeMatic-devices supporting OTA updates
   *
   * Copyright (c) 2014-20 Michael Gernoth <michael@gernoth.net>
   * Copyright (c) 2017 noansi (TSCULFW-support)
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to
   * deal in the Software without restriction, including without limitation the
   * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   * sell copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
   * IN THE SOFTWARE.
   */
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <stdint.h>
  #include <string.h>
  #include <strings.h>
  #include <poll.h>
  #include <errno.h>
  #include <sys/types.h>
  #include <sys/stat.h>
  #include <fcntl.h>
  #include <sys/time.h>
  #include <libusb-1.0/libusb.h>
  
  #include "hexdump.h"
  #include "firmware.h"
  #include "hm.h"
  #include "version.h"
  #include "hmcfgusb.h"
  #include "culfw.h"
  #include "hmuartlgw.h"
  #include "util.h"
  
  #define MAX_RETRIES		5
  #define NORMAL_MAX_PAYLOAD	37
  #define LOWER_MAX_PAYLOAD	17
  
  extern char *optarg;
  
  uint32_t hmid = 0;
  uint32_t my_hmid = 0;
  uint8_t key[16] = {0};
  int32_t kNo = -1;
  
  /* Maximum payloadlen supported by IO */
  uint32_t max_payloadlen = NORMAL_MAX_PAYLOAD;
  
  enum message_type {
  	MESSAGE_TYPE_E = 1,
  	MESSAGE_TYPE_R = 2,
  	MESSAGE_TYPE_B = 3,
  };
  
  enum hmuartlgw_state {
  	HMUARTLGW_STATE_GET_HMID,
  	HMUARTLGW_STATE_GET_FIRMWARE,
  	HMUARTLGW_STATE_GET_CREDITS,
  	HMUARTLGW_STATE_DONE,
  	HMUARTLGW_STATE_WAIT_APP,
  	HMUARTLGW_STATE_ACK_APP,
  };
  
  struct recv_data {
  	uint8_t message[64];
  	enum message_type message_type;
  	uint16_t status;
  	int speed;
  	uint16_t version;
  	uint8_t credits;
  	enum hmuartlgw_state uartlgw_state;
  	uint8_t uartlgw_version[3];
  	uint8_t is_TSCUL; // tsculfw
  };
  
  static int parse_hmcfgusb(uint8_t *buf, int buf_len, void *data)
  {
  	struct recv_data *rdata = data;
  
  	if (buf_len < 1)
  		return 1;
  
  	switch (buf[0]) {
  		case 'E':
  			if ((!hmid) ||
  			    ((buf[0x11] == ((hmid >> 16) & 0xff)) &&
  			    (buf[0x12] == ((hmid >> 8) & 0xff)) &&
  			    (buf[0x13] == (hmid & 0xff)))) {
  				memset(rdata->message, 0, sizeof(rdata->message));
  				memcpy(rdata->message, buf + 0x0d, buf[0x0d] + 1);
  				rdata->message_type = MESSAGE_TYPE_E;
  			}
  			break;
  		case 'R':
  			memset(rdata->message, 0, sizeof(rdata->message));
  			memcpy(rdata->message, buf + 0x0e, buf[0x0e] + 1);
  			rdata->status = (buf[5] << 8) | buf[6];
  			rdata->message_type = MESSAGE_TYPE_R;
  			break;
  		case 'G':
  			rdata->speed = buf[1];
  			break;
  		case 'H':
  			rdata->version = (buf[11] << 8) | buf[12];
  			rdata->credits = buf[36];
  			my_hmid = (buf[0x1b] << 16) | (buf[0x1c] << 8) | buf[0x1d];
  			break;
  		default:
  			break;
  	}
  
  	if (buf_len != 1)
  		return 1;
  
  	return 1;
  }
  
  static int parse_culfw(uint8_t *buf, int buf_len, void *data)
  {
  	struct recv_data *rdata = data;
  	int pos = 0;
  	int rpos = 0; // read index
  
  	memset(rdata->message, 0, sizeof(rdata->message));
  	rdata->message_type = 0;
  
  	if (buf_len <= 3)
  		return 0;
  
  	switch(buf[0]) {
  		case 'A':
  			if (buf[1] == 's')
  				return 0;
  
  			if ((buf[1] == 'p') || (buf[1] == 't')) // tsculfw: ping or set timestamp command echoed?
  				return 0;
  
  			if (buf[1] == '?') {// tsculfw: unknown command
  				fprintf(stderr, "unknown ASKSIN command sent\n");
  				return 0;
  			}
  
  			if (buf[1] == 'F') { // tsculfw: timestamp message?
  				rdata->is_TSCUL = 1;
  				if (buf_len <= (3+14)) // tsculfw: reasonable len?
  					return 0;
  				if (!validate_nibble(buf[3]) || !validate_nibble(buf[4])) // tsculfw: hex?
  					return 0;
  
  				rdata->credits = ascii_to_nibble(buf[3]); // tsculfw: coarse credits info, 0 = full credits (1800 x10ms) available
  
  				//AFF1B000053A1010F0520CB1122334BD57110
  				switch(ascii_to_nibble(buf[4]) & 0x7) { // tsculfw: message type?
  					case 0: // tsculfw: send fail message repeat fail or AES Auth error
  						fprintf(stderr, "send didn't complete, repeat fail or AES Auth error\n");
  						return 0;
  					case 1: // tsculfw: received message
  						rpos += 7; // tsculfw: ignore timestamp data for now
  						break;
  					case 2: // tsculfw: ping answer
  						return 0;
  					case 3: // tsculfw: send success
  						rdata->message_type = MESSAGE_TYPE_B;
  						return 0;
  					case 4: // tsculfw: send fail channel busy message
  						fprintf(stderr, "CCA didn't complete, too much traffic\n");
  						return 0;
  					case 5: // tsculfw: send fail credits message
  						fprintf(stderr, "send didn't complete, not enough credits left\n");
  						return 0;
  					case 6: // tsculfw: send timestamp fail message no buffer or send message length error
  						fprintf(stderr, "send didn't complete, not enough credits left -> wait 30 minutes with TSCUL powered and not reset\n");
  						return 0;
  					case 7: // tsculfw: send fail due to cc1101 TX-FIFO underflow error message
  						fprintf(stderr, "send didn't complete, cc1101 TX-FIFO underflow\n");
  						return 0;
  					default:
  						break;
  				}
  			}
  
  			while(validate_nibble(buf[(rpos * 2) + 1]) &&
  			      validate_nibble(buf[(rpos * 2) + 2]) &&
  			      (rpos + 1 < buf_len)) {
  				rdata->message[pos] = ascii_to_nibble(buf[(rpos * 2) + 1]) << 4;
  				rdata->message[pos] |= ascii_to_nibble(buf[(rpos * 2) + 2]);
  				pos++;
  				rpos++;
  			}
  
  			if (hmid && (SRC(rdata->message) != (int)hmid))
  				return 0;
  
  			rdata->message_type = MESSAGE_TYPE_E;
  			break;
  		case 'V':
  			{
  				uint8_t v;
  				char *s;
  				char *e;
  
  				if (!strncmp((char*)buf, "VTS", 3)) { // tsculfw: "VTS x.xx NNNNNN"
  					rdata->is_TSCUL = 1;
  					rdata->version = 0xffff;
  					break;
  				}
  
  				s = ((char*)buf) + 2;
  				e = strchr(s, '.');
  				if (!e) {
  					fprintf(stderr, "Unknown response from CUL: %s", buf);
  					return 0;
  				}
  				*e = '\0';
  				v = atoi(s);
  				rdata->version = v << 8;
  
  				s = e + 1;
  				e = strchr(s, ' ');
  				if (!e) {
  					fprintf(stderr, "Unknown response from CUL: %s", buf);
  					return 0;
  				}
  				*e = '\0';
  				v = atoi(s);
  				rdata->version |= v;
  
  				s = e + 1;
  				e = strchr(s, ' ');
  				if (!e) {
  					break;
  				}
  				*e = '\0';
  				if (!strcmp(s, "a-culfw")) {
  					rdata->version = 0xffff;
  				}
  			}
  			break;
  		case 'E':
  			{
  				if (!strncmp((char*)buf, "ERR:CCA", 7)) {
  					fprintf(stderr, "CCA didn't complete, too much traffic\n");
  				}
  				break;
  			}
  		default:
  			fprintf(stderr, "Unknown response from CUL: %s", buf);
  			return 0;
  			break;
  	}
  
  	return 1;
  }
  
  static int parse_hmuartlgw(enum hmuartlgw_dst dst, uint8_t *buf, int buf_len, void *data)
  {
  	struct recv_data *rdata = data;
  
  	if (dst == HMUARTLGW_OS) {
  		switch (rdata->uartlgw_state) {
  			case HMUARTLGW_STATE_GET_FIRMWARE:
  				if (buf[0] == HMUARTLGW_OS_ACK) {
  					rdata->uartlgw_version[0] = buf[5];
  					rdata->uartlgw_version[1] = buf[6];
  					rdata->uartlgw_version[2] = buf[7];
  					rdata->uartlgw_state = HMUARTLGW_STATE_DONE;
  				}
  				break;
  			case HMUARTLGW_STATE_GET_CREDITS:
  				if (buf[0] == HMUARTLGW_OS_ACK) {
  					rdata->credits = buf[2] / 2;
  					rdata->uartlgw_state = HMUARTLGW_STATE_DONE;
  				}
  				break;
  			default:
  				break;
  		}
  		return 0;
  	}
  
  	switch(buf[0]) {
  		case HMUARTLGW_APP_ACK:
  			if (rdata->uartlgw_state == HMUARTLGW_STATE_GET_HMID) {
  				my_hmid = (buf[4] << 16) | (buf[5] << 8) | buf[6];
  			}
  
  			rdata->status = buf[1];
  			rdata->message_type = MESSAGE_TYPE_R;
  			rdata->uartlgw_state = HMUARTLGW_STATE_ACK_APP;
  #if 0
  			hexdump(buf, buf_len, "ACK Status: ");
  #endif
  
  			break;
  		case HMUARTLGW_APP_RECV:
  			if ((!hmid) ||
  			    ((buf[7] == ((hmid >> 16) & 0xff)) &&
  			    (buf[8] == ((hmid >> 8) & 0xff)) &&
  			    (buf[9] == (hmid & 0xff)))) {
  				memset(rdata->message, 0, sizeof(rdata->message));
  				memcpy(rdata->message + 1, buf + 4, buf_len - 4);
  				rdata->message[LEN] = buf_len - 4;
  				rdata->message_type = MESSAGE_TYPE_E;
  			}
  			break;
  		default:
  			break;
  	}
  
  	return 1;
  }
  
  int send_wait_hmuartlgw(struct hm_dev *dev, struct recv_data *rdata, uint8_t *data, int data_len,
                          enum hmuartlgw_dst dst, enum hmuartlgw_state srcstate,
  			enum hmuartlgw_state dststate)
  {
  	int cnt = 5;
  
  	do {
  		rdata->uartlgw_state = srcstate;
  		hmuartlgw_send(dev->hmuartlgw, data, data_len, dst);
  		do { hmuartlgw_poll(dev->hmuartlgw, 500); } while (rdata->uartlgw_state != dststate);
  		if (rdata->status != HMUARTLGW_ACK_EINPROGRESS)
  			break;
  		usleep(200*1000);
  	} while (cnt--);
  	if (rdata->status == HMUARTLGW_ACK_EINPROGRESS) {
  		fprintf(stderr, "IO thinks it is busy, you might have to reset it!\n");
  		return 0;
  	}
  
  	return 1;
  }
  
  int send_hm_message(struct hm_dev *dev, struct recv_data *rdata, uint8_t *msg)
  {
  	static uint32_t id = 1;
  	struct timeval tv;
  	uint8_t out[0x40];
  	int pfd;
  
  	switch(dev->type) {
  		case DEVICE_TYPE_HMCFGUSB:
  			if (gettimeofday(&tv, NULL) == -1) {
  				perror("gettimeofay");
  					return 0;
  			}
  
  			memset(out, 0, sizeof(out));
  
  			out[0] = 'S';
  			out[1] = (id >> 24) & 0xff;
  			out[2] = (id >> 16) & 0xff;
  			out[3] = (id >> 8) & 0xff;
  			out[4] = id & 0xff;
  			out[10] = 0x01;
  			out[11] = (tv.tv_usec >> 24) & 0xff;
  			out[12] = (tv.tv_usec >> 16) & 0xff;
  			out[13] = (tv.tv_usec >> 8) & 0xff;
  			out[14] = tv.tv_usec & 0xff;
  
  			memcpy(&out[0x0f], msg, msg[0] + 1);
  
  			memset(rdata->message, 0, sizeof(rdata->message));
  			rdata->message_type = 0;
  			hmcfgusb_send(dev->hmcfgusb, out, sizeof(out), 1);
  
  			while (1) {
  				if (rdata->message_type == MESSAGE_TYPE_R) {
  					if (((rdata->status & 0xdf) == 0x01) ||
  					    ((rdata->status & 0xdf) == 0x02)) {
  						break;
  					} else {
  						if ((rdata->status & 0xff00) == 0x0400) {
  							fprintf(stderr, "\nOut of credits!\n");
  						} else if ((rdata->status & 0xff) == 0x08) {
  							fprintf(stderr, "\nMissing ACK!\n");
  						} else if ((rdata->status & 0xff) == 0x30) {
  							fprintf(stderr, "\nUnknown AES-key requested!\n");
  						} else {
  							fprintf(stderr, "\nInvalid status: %04x\n", rdata->status);
  						}
  						return 0;
  					}
  				}
  				errno = 0;
  				pfd = hmcfgusb_poll(dev->hmcfgusb, 1000);
  				if ((pfd < 0) && errno) {
  					if (errno != ETIMEDOUT) {
  						perror("\n\nhmcfgusb_poll");
  						exit(EXIT_FAILURE);
  					}
  				}
  			}
  			break;
  		case DEVICE_TYPE_CULFW:
  			{
  				char buf[256];
  				int i;
  
  				memset(buf, 0, sizeof(buf));
  				buf[0] = 'A';
  				buf[1] = 's';
  				for (i = 0; i < msg[0] + 1; i++) {
  					buf[2 + (i * 2)] = nibble_to_ascii((msg[i] >> 4) & 0xf);
  					buf[2 + (i * 2) + 1] = nibble_to_ascii(msg[i] & 0xf);
  				}
  				buf[2 + (i * 2) ] = '\r';
  				buf[2 + (i * 2) + 1] = '\n';
  
  				memset(rdata->message, 0, sizeof(rdata->message));
  				rdata->message_type = 0;
  				if (culfw_send(dev->culfw, buf, 2 + (i * 2) + 1) == 0) {
  					fprintf(stderr, "culfw_send failed!\n");
  					exit(EXIT_FAILURE);
  				}
  
  				/* Wait for TSCUL to ACK send */
  				if (rdata->is_TSCUL) {
  					do {
  						errno = 0;
  						pfd = culfw_poll(dev->culfw, 200);
  						if ((pfd < 0) && errno) {
  							if (errno != ETIMEDOUT) {
  								perror("\n\nculfw_poll");
  								exit(EXIT_FAILURE);
  							}
  						}
  					} while (rdata->message_type != MESSAGE_TYPE_B);
  				}
  
  				if (msg[CTL] & 0x20) {
  					int cnt = 5;
  					int pfd;
  					do {
  						errno = 0;
  						pfd = culfw_poll(dev->culfw, 200);
  						if ((pfd < 0) && errno) {
  							if (errno != ETIMEDOUT) {
  								perror("\n\nculfw_poll");
  								exit(EXIT_FAILURE);
  							}
  						}
  						if (rdata->message_type == MESSAGE_TYPE_E) {
  							if (rdata->message[TYPE] == 0x02) {
  								if (rdata->message[PAYLOAD] == 0x04) {
  									int32_t req_kNo;
  									uint8_t challenge[6];
  									uint8_t respbuf[16];
  									uint8_t *resp;
  
  									if (rdata->is_TSCUL) {
  										printf("AES handled by TSCUL\n");
  										break;
  									}
  
  									req_kNo = rdata->message[rdata->message[LEN]] / 2;
  									memcpy(challenge, &(rdata->message[PAYLOAD+1]), 6);
  
  									if (req_kNo != kNo) {
  										fprintf(stderr, "AES request for unknown key %d!\n", req_kNo);
  									} else {
  										resp = hm_sign(key, challenge, msg, NULL, respbuf);
  										if (resp) {
  											uint8_t rbuf[64];
  
  											memset(rbuf, 0, sizeof(rbuf));
  											rbuf[MSGID] = rdata->message[MSGID];
  											rbuf[CTL] = rdata->message[CTL];
  											rbuf[TYPE] = 0x03;
  											SET_SRC(rbuf, DST(rdata->message));
  											SET_DST(rbuf, SRC(rdata->message));
  											memcpy(&(rbuf[PAYLOAD]), resp, 16);
  											SET_LEN_FROM_PAYLOADLEN(rbuf, 16);
  
  											usleep(110000); /* Determined by a fair dice roll */
  											return send_hm_message(dev, rdata, rbuf);
  										}
  									}
  								} else if (rdata->message[PAYLOAD] >= 0x80 && rdata->message[PAYLOAD] <= 0x8f) {
  									fprintf(stderr, "NACK\n");
  								} else {	/* ACK or ACKinfo */
  									break;
  								}
  							} else {
  								fprintf(stderr, "Unexpected message received: ");
  								for (i = 0; i < rdata->message[LEN]; i++) {
  									fprintf(stderr, "%02x", rdata->message[i+1]);
  								}
  								fprintf(stderr, "\n");
  							}
  						}
  					} while(cnt--);
  
  					if (cnt == -1) {
  						fprintf(stderr, "\nMissing ACK!\n");
  						return 0;
  					}
  				}
  
  				/* Delay for non-TSCUL */
  				if (!rdata->is_TSCUL) {
  					usleep(50*1000);
  				}
  			}
  			break;
  		case DEVICE_TYPE_HMUARTLGW:
  			memset(out, 0, sizeof(out));
  
  			out[0] = HMUARTLGW_APP_SEND;
  			out[1] = 0x00;
  			out[2] = 0x00;
  			out[3] = (msg[CTL] & 0x10) ? 0x01 : 0x00; /* Burst?! */
  			memcpy(&out[4], &msg[1], msg[0]);
  
  			memset(rdata->message, 0, sizeof(rdata->message));
  			rdata->message_type = 0;
  			hmuartlgw_send(dev->hmuartlgw, out, msg[0] + 4, HMUARTLGW_APP);
  
  			while (1) {
  				if (rdata->message_type == MESSAGE_TYPE_R) {
  					if ((rdata->status == 0x02) ||
  					    (rdata->status == 0x03) ||
  					    (rdata->status == 0x0c)) {
  						break;
  					} else {
  						if (rdata->status == 0x0d) {
  							fprintf(stderr, "\nAES handshake failed!\n");
  						} else if (rdata->status == 0x04 || rdata->status == 0x06) {
  							fprintf(stderr, "\nMissing ACK!\n");
  						} else {
  							fprintf(stderr, "\nInvalid status: %04x\n", rdata->status);
  						}
  						return 0;
  					}
  				}
  				errno = 0;
  				pfd = hmuartlgw_poll(dev->hmuartlgw, 1000);
  				if ((pfd < 0) && errno) {
  					if (errno != ETIMEDOUT) {
  						perror("\n\nhmcfgusb_poll");
  						exit(EXIT_FAILURE);
  					}
  				}
  			}
  			break;
  	}
  
  	id++;
  	return 1;
  }
  
  static int switch_speed(struct hm_dev *dev, struct recv_data *rdata, uint8_t speed)
  {
  	uint8_t out[0x40];
  	int pfd;
  
  	printf("Entering %uk-mode\n", speed);
  
  	switch(dev->type) {
  		case DEVICE_TYPE_HMCFGUSB:
  			memset(out, 0, sizeof(out));
  			out[0] = 'G';
  			out[1] = speed;
  
  			hmcfgusb_send(dev->hmcfgusb, out, sizeof(out), 1);
  
  			while (1) {
  				errno = 0;
  				pfd = hmcfgusb_poll(dev->hmcfgusb, 1000);
  				if ((pfd < 0) && errno) {
  					if (errno != ETIMEDOUT) {
  						perror("\n\nhmcfgusb_poll");
  						exit(EXIT_FAILURE);
  					}
  				}
  				if (rdata->speed == speed)
  					break;
  			}
  			break;
  		case DEVICE_TYPE_CULFW:
  			if (speed == 100) {
  				return culfw_send(dev->culfw, "AR\r\n", 4);
  			} else {
  				return culfw_send(dev->culfw, "Ar\r\n", 4);
  			}
  			break;
  		case DEVICE_TYPE_HMUARTLGW:
  			if (speed == 100) {
  				out[0] = HMUARTLGW_OS_UPDATE_MODE;
  				out[1] = 0xe9;
  				out[2] = 0xca;
  				hmuartlgw_send(dev->hmuartlgw, out, 3, HMUARTLGW_OS);
  			} else {
  				out[0] = HMUARTLGW_OS_NORMAL_MODE;
  				hmuartlgw_send(dev->hmuartlgw, out, 1, HMUARTLGW_OS);
  			}
  			break;
  	}
  
  	return 1;
  }
  
  void flash_ota_syntax(char *prog)
  {
  	fprintf(stderr, "Syntax: %s parameters options\n\n", prog);
  	fprintf(stderr, "Mandatory parameters:\n");
  	fprintf(stderr, "\t-f firmware.eq3\teq3 firmware file to flash\n");
  	fprintf(stderr, "or\t-f firmware.hex\thex firmware file to flash (AsksinPP), needs -3 or -6\n");
  	fprintf(stderr, "\t-s SERIAL\tserial of device to flash (optional when using -D)\n");
  	fprintf(stderr, "\nOptional parameters:\n");
  	fprintf(stderr, "\t-c device\tenable CUL-mode with CUL at path \"device\"\n");
  	fprintf(stderr, "\t-b bps\t\tuse CUL with speed \"bps\" (default: %u)\n", DEFAULT_CUL_BPS);
  	fprintf(stderr, "\t-l\t\tlower payloadlen (required for devices with little RAM, e.g. CUL v2 and CUL v4)\n");
  	fprintf(stderr, "\t-S serial\tuse HM-CFG-USB with given serial\n");
  	fprintf(stderr, "\t-U device\tuse HM-MOD-UART on given device\n");
  	fprintf(stderr, "\t-3\t\tuse Atmega328P configuration when directly flashing AsksinPP hex\n");
  	fprintf(stderr, "\t-6\t\tuse Atmega644P configuration when directly flashing AsksinPP hex\n");
  	fprintf(stderr, "\t-h\t\tthis help\n");
  	fprintf(stderr, "\nOptional parameters for automatically sending device to bootloader\n");
  	fprintf(stderr, "\t-C\t\tHMID of central (3 hex-bytes, no prefix, e.g. ABCDEF)\n");
  	fprintf(stderr, "\t-D\t\tHMID of device (3 hex-bytes, no prefix, e.g. 123456)\n");
  	fprintf(stderr, "\t-K\t\tKNO:KEY AES key-number and key (hex) separated by colon (Fhem hmKey attribute)\n");
  }
  
  int main(int argc, char **argv)
  {
  	const char twiddlie[] = { '-', '\\', '|', '/' };
  	const uint8_t cc1101_regs[] = { 0x10, 0x5B, 0x11, 0xF8, 0x15, 0x47 };
  	char *fw_file = NULL;
  	char *serial = NULL;
  	char *culfw_dev = NULL;
  	char *endptr = NULL;
  	unsigned int bps = DEFAULT_CUL_BPS;
  	struct hm_dev dev;
  	struct recv_data rdata;
  	uint8_t out[0x40];
  	uint8_t *pos;
  	uint8_t msgid = 0x1;
  	uint16_t len;
  	struct firmware *fw;
  	char *hmcfgusb_serial = NULL;
  	char *uart = NULL;
  	int atmega = ATMEGA_UNKNOWN;
  	int block;
  	int pfd;
  	int debug = 0;
  	int cnt;
  	int switchcnt = 0;
  	int msgnum = 0;
  	int switched = 0;
  	int opt;
  
  	printf("HomeMatic OTA flasher version " VERSION "\n\n");
  
  	while((opt = getopt(argc, argv, "b:c:f:hls:C:D:K:S:U:36")) != -1) {
  		switch (opt) {
  			case 'b':
  				bps = atoi(optarg);
  				break;
  			case 'c':
  				culfw_dev = optarg;
  				break;
  			case 'f':
  				fw_file = optarg;
  				break;
  			case 'l':
  				printf("Reducing payload-len from %d to %d\n", max_payloadlen, LOWER_MAX_PAYLOAD);
  				max_payloadlen = LOWER_MAX_PAYLOAD;
  				break;
  			case 's':
  				serial = optarg;
  				break;
  			case 'C':
  				my_hmid = strtoul(optarg, &endptr, 16);
  				if (*endptr != '\0') {
  					fprintf(stderr, "Invalid central HMID!\n\n");
  					flash_ota_syntax(argv[0]);
  					exit(EXIT_FAILURE);
  				}
  				break;
  			case 'D':
  				hmid = strtoul(optarg, &endptr, 16);
  				if (*endptr != '\0') {
  					fprintf(stderr, "Invalid device HMID!\n\n");
  					flash_ota_syntax(argv[0]);
  					exit(EXIT_FAILURE);
  				}
  				break;
  			case 'K':
  				kNo = strtoul(optarg, &endptr, 10);
  				if (*endptr != ':') {
  					fprintf(stderr, "Invalid key number!\n\n");
  					flash_ota_syntax(argv[0]);
  					exit(EXIT_FAILURE);
  				}
  				endptr++;
  				for (cnt = 0; cnt < 16; cnt++) {
  					if (*endptr == '\0' || *(endptr+1) == '\0' ||
  					    !validate_nibble(*endptr) ||
  					    !validate_nibble(*(endptr+1))) {
  						fprintf(stderr, "Invalid key!\n\n");
  						flash_ota_syntax(argv[0]);
  						exit(EXIT_FAILURE);
  					}
  					key[cnt] = ascii_to_nibble(*endptr) << 4 | ascii_to_nibble(*(endptr+1));
  					endptr += 2;
  				}
  				break;
  			case 'S':
  				hmcfgusb_serial = optarg;
  				break;
  			case 'U':
  				uart = optarg;
  				break;
  			case '3':
  				atmega = ATMEGA_328P;
  				break;
  			case '6':
  				atmega = ATMEGA_644P;
  				break;
  			case 'h':
  			case ':':
  			case '?':
  			default:
  				flash_ota_syntax(argv[0]);
  				exit(EXIT_FAILURE);
  				break;
  
  		}
  	}
  
  	if (!fw_file || (!serial && !hmid)) {
  		flash_ota_syntax(argv[0]);
  		exit(EXIT_FAILURE);
  	}
  
  	fw = firmware_read_firmware(fw_file, atmega, debug);
  	if (!fw)
  		exit(EXIT_FAILURE);
  
  	memset(&rdata, 0, sizeof(rdata));
  	memset(&dev, 0, sizeof(struct hm_dev));
  
  	if (culfw_dev) {
  		printf("Opening culfw-device at path %s with speed %u\n", culfw_dev, bps);
  		dev.culfw = culfw_init(culfw_dev, bps, parse_culfw, &rdata);
  		if (!dev.culfw) {
  			fprintf(stderr, "Can't initialize CUL at %s with rate %u\n", culfw_dev, bps);
  			exit(EXIT_FAILURE);
  		}
  		dev.type = DEVICE_TYPE_CULFW;
  
  		printf("Requesting firmware version\n");
  		culfw_send(dev.culfw, "\r\n", 2);
  		culfw_flush(dev.culfw);
  
  		while (1) {
  			culfw_send(dev.culfw, "V\r\n", 3);
  
  			errno = 0;
  			pfd = culfw_poll(dev.culfw, 1000);
  			if ((pfd < 0) && errno) {
  				if (errno != ETIMEDOUT) {
  					perror("\n\nhmcfgusb_poll");
  					exit(EXIT_FAILURE);
  				}
  			}
  			if (rdata.version)
  				break;
  		}
  
  		printf("culfw-device firmware version: ");
  		if (rdata.version != 0xffff) {
  			printf("%u.%02u\n",
  				(rdata.version >> 8) & 0xff,
  				rdata.version & 0xff);
  		} else {
  			if (rdata.is_TSCUL) {
  				culfw_send(dev.culfw, "At1\r\n", 5); // tsculfw: try switch on timestamp protocol
  				printf("tsculfw\n");
  				culfw_flush(dev.culfw);
  				culfw_send(dev.culfw, "ApTiMeStAmP\r\n", 13); // tsculfw: send ping to get credits info
  				pfd = culfw_poll(dev.culfw, 1000);
  				if ((pfd < 0) && errno) {
  					if (errno != ETIMEDOUT) {
  						perror("\n\nhmcfgusb_poll");
  						exit(EXIT_FAILURE);
  					}
  				}
  				if (rdata.credits) { // tsculfw: maximum credits available?
  					fprintf(stderr, "\n\ntsculfw does not report full credits, try again later\n");
  					exit(EXIT_FAILURE);
  				}
  
  				if (kNo > 0) {
  					char keybuf[64] = { 0 };
  					int i;
  
  					printf("Setting AES-key\n");
  					snprintf(keybuf, sizeof(keybuf) - 1, "Ak%02x", kNo - 1);
  
  					for (i = 0; i < 16; i++) {
  						keybuf[4 + (i * 2)] = nibble_to_ascii((key[i] >> 4) & 0xf);
  						keybuf[4 + (i * 2) + 1] = nibble_to_ascii(key[i] & 0xf);
  					}
  					keybuf[4 + (i * 2) ] = '\r';
  					keybuf[4 + (i * 2) + 1] = '\n';
  					culfw_send(dev.culfw, keybuf, strlen(keybuf)); // tsculfw: send ping to get credits info
  					pfd = culfw_poll(dev.culfw, 1000);
  					if ((pfd < 0) && errno) {
  						if (errno != ETIMEDOUT) {
  							perror("\n\nhmcfgusb_poll");
  							exit(EXIT_FAILURE);
  						}
  					}
  				}
  			}
  			else {
  				printf("a-culfw\n");
  			}
  		}
  
  		if (rdata.version < 0x013a) {
  			fprintf(stderr, "\nThis version does _not_ support firmware upgrade mode, you need at least 1.58!\n");
  			exit(EXIT_FAILURE);
  		}
  	} else if (uart) {
  		uint32_t new_hmid = my_hmid;
  
  		hmuartlgw_set_debug(debug);
  
  		dev.hmuartlgw = hmuart_init(uart, parse_hmuartlgw, &rdata, 1);
  		if (!dev.hmuartlgw) {
  			fprintf(stderr, "Can't initialize HM-MOD-UART\n");
  			exit(EXIT_FAILURE);
  		}
  		dev.type = DEVICE_TYPE_HMUARTLGW;
  
  		out[0] = HMUARTLGW_APP_GET_HMID;
  		send_wait_hmuartlgw(&dev, &rdata, out, 1, HMUARTLGW_APP, HMUARTLGW_STATE_GET_HMID, HMUARTLGW_STATE_ACK_APP);
  
  		out[0] = HMUARTLGW_OS_GET_FIRMWARE;
  		send_wait_hmuartlgw(&dev, &rdata, out, 1, HMUARTLGW_OS, HMUARTLGW_STATE_GET_FIRMWARE, HMUARTLGW_STATE_DONE);
  
  		out[0] = HMUARTLGW_OS_GET_CREDITS;
  		send_wait_hmuartlgw(&dev, &rdata, out, 1, HMUARTLGW_OS, HMUARTLGW_STATE_GET_CREDITS, HMUARTLGW_STATE_DONE);
  
  		printf("HM-MOD-UART firmware version: %u.%u.%u, used credits: %u%%\n",
  			rdata.uartlgw_version[0],
  			rdata.uartlgw_version[1],
  			rdata.uartlgw_version[2],
  			rdata.credits);
  
  		if (rdata.credits >= 40) {
  			printf("\nRebooting HM-MOD-UART to avoid running out of credits\n");
  
  			hmuartlgw_enter_bootloader(dev.hmuartlgw);
  			hmuartlgw_enter_app(dev.hmuartlgw);
  		}
  
  		printf("\nHM-MOD-UART opened\n\n");
  
  		if (new_hmid && (my_hmid != new_hmid)) {
  			printf("Changing hmid from %06x to %06x\n", my_hmid, new_hmid);
  
  			out[0] = HMUARTLGW_APP_SET_HMID;
  			out[1] = (new_hmid >> 16) & 0xff;
  			out[2] = (new_hmid >> 8) & 0xff;
  			out[3] = new_hmid & 0xff;
  			send_wait_hmuartlgw(&dev, &rdata, out, 4, HMUARTLGW_APP, HMUARTLGW_STATE_WAIT_APP, HMUARTLGW_STATE_ACK_APP);
  
  			my_hmid = new_hmid;
  		}
  
  		if (kNo > 0) {
  			printf("Setting AES-key\n");
  
  			memset(out, 0, sizeof(out));
  			out[0] = HMUARTLGW_APP_SET_CURRENT_KEY;
  			memcpy(&(out[1]), key, 16);
  			out[17] = kNo;
  			send_wait_hmuartlgw(&dev, &rdata, out, 18, HMUARTLGW_APP, HMUARTLGW_STATE_WAIT_APP, HMUARTLGW_STATE_ACK_APP);
  
  			memset(out, 0, sizeof(out));
  			out[0] = HMUARTLGW_APP_SET_OLD_KEY;
  			memcpy(&(out[1]), key, 16);
  			out[17] = kNo;
  			send_wait_hmuartlgw(&dev, &rdata, out, 18, HMUARTLGW_APP, HMUARTLGW_STATE_WAIT_APP, HMUARTLGW_STATE_ACK_APP);
  		}
  	} else {
  		uint32_t new_hmid = my_hmid;
  
  		hmcfgusb_set_debug(debug);
  
  		dev.hmcfgusb = hmcfgusb_init(parse_hmcfgusb, &rdata, hmcfgusb_serial);
  		if (!dev.hmcfgusb) {
  			fprintf(stderr, "Can't initialize HM-CFG-USB\n");
  			exit(EXIT_FAILURE);
  		}
  		dev.type = DEVICE_TYPE_HMCFGUSB;
  
  		memset(out, 0, sizeof(out));
  		out[0] = 'K';
  		hmcfgusb_send(dev.hmcfgusb, out, sizeof(out), 1);
  
  		while (1) {
  			errno = 0;
  			pfd = hmcfgusb_poll(dev.hmcfgusb, 1000);
  			if ((pfd < 0) && errno) {
  				if (errno != ETIMEDOUT) {
  					perror("\n\nhmcfgusb_poll");
  					exit(EXIT_FAILURE);
  				}
  			}
  			if (rdata.version)
  				break;
  		}
  
  		if (rdata.version < 0x3c7) {
  			fprintf(stderr, "HM-CFG-USB firmware too low: %u < 967\n", rdata.version);
  			exit(EXIT_FAILURE);
  		}
  
  		printf("HM-CFG-USB firmware version: %u, used credits: %u%%\n", rdata.version, rdata.credits);
  
  		if (rdata.credits >= 40) {
  			printf("\nRebooting HM-CFG-USB to avoid running out of credits\n\n");
  
  			if (!dev.hmcfgusb->bootloader) {
  				printf("HM-CFG-USB not in bootloader mode, entering bootloader.\n");
  				printf("Waiting for device to reappear...\n");
  
  				do {
  					if (dev.hmcfgusb) {
  						if (!dev.hmcfgusb->bootloader)
  							hmcfgusb_enter_bootloader(dev.hmcfgusb);
  						hmcfgusb_close(dev.hmcfgusb);
  					}
  					sleep(1);
  				} while (((dev.hmcfgusb = hmcfgusb_init(parse_hmcfgusb, &rdata, hmcfgusb_serial)) == NULL) || (!dev.hmcfgusb->bootloader));
  			}
  
  			if (dev.hmcfgusb->bootloader) {
  				printf("HM-CFG-USB in bootloader mode, rebooting\n");
  
  				do {
  					if (dev.hmcfgusb) {
  						if (dev.hmcfgusb->bootloader)
  							hmcfgusb_leave_bootloader(dev.hmcfgusb);
  						hmcfgusb_close(dev.hmcfgusb);
  					}
  					sleep(1);
  				} while (((dev.hmcfgusb = hmcfgusb_init(parse_hmcfgusb, &rdata, hmcfgusb_serial)) == NULL) || (dev.hmcfgusb->bootloader));
  			}
  		}
  
  		printf("\n\nHM-CFG-USB opened\n\n");
  
  		if (new_hmid && (my_hmid != new_hmid)) {
  			printf("Changing hmid from %06x to %06x\n", my_hmid, new_hmid);
  
  			memset(out, 0, sizeof(out));
  			out[0] = 'A';
  			out[1] = (new_hmid >> 16) & 0xff;
  			out[2] = (new_hmid >> 8) & 0xff;
  			out[3] = new_hmid & 0xff;
  
  			hmcfgusb_send(dev.hmcfgusb, out, sizeof(out), 1);
  
  			my_hmid = new_hmid;
  		}
  
  		if (kNo > 0) {
  			printf("Setting AES-key\n");
  
  			memset(out, 0, sizeof(out));
  			out[0] = 'Y';
  			out[1] = 0x01;
  			out[2] = kNo;
  			out[3] = sizeof(key);
  			memcpy(&(out[4]), key, sizeof(key));
  			hmcfgusb_send(dev.hmcfgusb, out, sizeof(out), 1);
  
  			memset(out, 0, sizeof(out));
  			out[0] = 'Y';
  			out[1] = 0x02;
  			out[2] = 0x00;
  			out[3] = 0x00;
  			hmcfgusb_send(dev.hmcfgusb, out, sizeof(out), 1);
  
  			memset(out, 0, sizeof(out));
  			out[0] = 'Y';
  			out[1] = 0x03;
  			out[2] = 0x00;
  			out[3] = 0x00;
  			hmcfgusb_send(dev.hmcfgusb, out, sizeof(out), 1);
  		}
  	}
  
  	if (!switch_speed(&dev, &rdata, 10)) {
  		fprintf(stderr, "Can't switch speed!\n");
  		exit(EXIT_FAILURE);
  	}
  
  	if (hmid && my_hmid) {
  		switch (dev.type) {
  			case DEVICE_TYPE_HMCFGUSB:
  				printf("Adding HMID\n");
  
  				memset(out, 0, sizeof(out));
  				out[0] = '+';
  				out[1] = (hmid >> 16) & 0xff;
  				out[2] = (hmid >> 8) & 0xff;
  				out[3] = hmid & 0xff;
  
  				hmcfgusb_send(dev.hmcfgusb, out, sizeof(out), 1);
  				break;
  			case DEVICE_TYPE_HMUARTLGW:
  				printf("Adding HMID\n");
  
  				memset(out, 0, sizeof(out));
  				out[0] = HMUARTLGW_APP_ADD_PEER;
  				out[1] = (hmid >> 16) & 0xff;
  				out[2] = (hmid >> 8) & 0xff;
  				out[3] = hmid & 0xff;
  				out[4] = (kNo > 0) ? kNo : 0x00; /* KeyIndex */
  				out[5] = 0x00; /* WakeUp? */
  				out[6] = 0x00; /* WakeUp? */
  
  				send_wait_hmuartlgw(&dev, &rdata, out, 7, HMUARTLGW_APP, HMUARTLGW_STATE_WAIT_APP, HMUARTLGW_STATE_ACK_APP);
  
  				break;
  		}
  		printf("Sending device with hmid %06x to bootloader\n", hmid);
  		out[CTL] = 0x30;
  		out[TYPE] = 0x11;
  		SET_SRC(out, my_hmid);
  		SET_DST(out, hmid);
  		out[PAYLOAD] = 0xCA;
  		SET_LEN_FROM_PAYLOADLEN(out, 1);
  
  		cnt = 3;
  		do {
  			out[MSGID] = msgid++;
  			if (send_hm_message(&dev, &rdata, out)) {
  				break;
  			}
  		} while (cnt--);
  		if (cnt == -1) {
  			printf("Failed to send device to bootloader, please enter bootloader manually.\n");
  		}
  	}
  
  	if (serial) {
  		printf("Waiting for device with serial %s\n", serial);
  	} else {
  		printf("Waiting for device with HMID %06x\n", hmid);
  	}
  
  	while (1) {
  		errno = 0;
  		switch (dev.type) {
  			case DEVICE_TYPE_CULFW:
  				pfd = culfw_poll(dev.culfw, 1000);
  				break;
  			case DEVICE_TYPE_HMCFGUSB:
  				pfd = hmcfgusb_poll(dev.hmcfgusb, 1000);
  				break;
  			case DEVICE_TYPE_HMUARTLGW:
  				pfd = hmuartlgw_poll(dev.hmuartlgw, 1000);
  				break;
  			default:
  				pfd = -1;
  				break;
  		}
  
  		if ((pfd < 0) && errno) {
  			if (errno != ETIMEDOUT) {
  				perror("\n\npoll");
  				exit(EXIT_FAILURE);
  			}
  		}
  
  		if ((rdata.message[LEN] == 0x14) && /* Length */
  		    (rdata.message[MSGID] == 0x00) && /* Message ID */
  		    (rdata.message[CTL] == 0x00) && /* Control Byte */
  		    (rdata.message[TYPE] == 0x10) && /* Messagte type: Information */
  		    (DST(rdata.message) == 0x000000) && /* Broadcast */
  		    (rdata.message[PAYLOAD] == 0x00)) { /* FUP? */
  			if (serial && !strncmp((char*)&(rdata.message[0x0b]), serial, 10)) {
  				hmid = SRC(rdata.message);
  				break;
  			} else if (!serial && SRC(rdata.message) == (int)hmid) {
  				serial = (char*)&(rdata.message[0x0b]);
  				break;
  			}
  		}
  	}
  
  	printf("Device with serial %s (HMID: %06x) entered firmware-update-mode\n", serial, hmid);
  
  	switch (dev.type) {
  		case DEVICE_TYPE_HMCFGUSB:
  			printf("Adding HMID\n");
  
  			memset(out, 0, sizeof(out));
  			out[0] = '+';
  			out[1] = (hmid >> 16) & 0xff;
  			out[2] = (hmid >> 8) & 0xff;
  			out[3] = hmid & 0xff;
  
  			hmcfgusb_send(dev.hmcfgusb, out, sizeof(out), 1);
  			break;
  		case DEVICE_TYPE_HMUARTLGW:
  			printf("Adding HMID\n");
  
  			memset(out, 0, sizeof(out));
  			out[0] = HMUARTLGW_APP_ADD_PEER;
  			out[1] = (hmid >> 16) & 0xff;
  			out[2] = (hmid >> 8) & 0xff;
  			out[3] = hmid & 0xff;
  			out[4] = 0x00; /* KeyIndex */
  			out[5] = 0x00; /* WakeUp? */
  			out[6] = 0x00; /* WakeUp? */
  
  			send_wait_hmuartlgw(&dev, &rdata, out, 7, HMUARTLGW_APP, HMUARTLGW_STATE_WAIT_APP, HMUARTLGW_STATE_ACK_APP);
  
  			break;
  	}
  
  	switchcnt = 3;
  	do {
  		printf("Initiating remote switch to 100k\n");
  
  		memset(out, 0, sizeof(out));
  
  		out[MSGID] = msgid++;
  		out[CTL] = 0x00;
  		out[TYPE] = 0xCB;
  		SET_SRC(out, my_hmid);
  		SET_DST(out, hmid);
  
  		memcpy(&out[PAYLOAD], cc1101_regs, sizeof(cc1101_regs));
  		SET_LEN_FROM_PAYLOADLEN(out, sizeof(cc1101_regs));
  
  		if (!send_hm_message(&dev, &rdata, out)) {
  			exit(EXIT_FAILURE);
  		}
  
  		if (!switch_speed(&dev, &rdata, 100)) {
  			fprintf(stderr, "Can't switch speed!\n");
  			exit(EXIT_FAILURE);
  		}
  
  		printf("Has the device switched?\n");
  
  		memset(out, 0, sizeof(out));
  
  		out[MSGID] = msgid++;
  		out[CTL] = 0x20;
  		out[TYPE] = 0xCB;
  		SET_SRC(out, my_hmid);
  		SET_DST(out, hmid);
  
  		memcpy(&out[PAYLOAD], cc1101_regs, sizeof(cc1101_regs));
  		SET_LEN_FROM_PAYLOADLEN(out, sizeof(cc1101_regs));
  
  		cnt = 3;
  		do {
  			if (send_hm_message(&dev, &rdata, out)) {
  				/* A0A02000221B9AD00000000 */
  				switched = 1;
  				break;
  			}
  		} while (cnt--);
  
  		if (!switched) {
  			printf("No!\n");
  
  			if (!switch_speed(&dev, &rdata, 10)) {
  				fprintf(stderr, "Can't switch speed!\n");
  				exit(EXIT_FAILURE);
  			}
  		}
  	} while ((!switched) && (switchcnt--));
  
  	if (!switched) {
  		fprintf(stderr, "Too many errors, giving up!\n");
  		exit(EXIT_FAILURE);
  	}
  
  	printf("Yes!\n");
  
  	printf("Flashing %d blocks", fw->fw_blocks);
  	if (debug) {
  		printf("\n");
  	} else {
  		printf(": %04u/%04u %c", 0, fw->fw_blocks, twiddlie[0]);
  		fflush(stdout);
  	}
  
  	for (block = 0; block < fw->fw_blocks; block++) {
  		int first;
  
  		len = fw->fw[block][2] << 8;
  		len |= fw->fw[block][3];
  
  		pos = &(fw->fw[block][2]);
  
  		len += 2; /* length */
  
  		if (debug)
  			hexdump(pos, len, "F> ");
  
  		first = 1;
  		cnt = 0;
  		do {
  			int payloadlen = max_payloadlen - 2;
  			int ack = 0;
  
  			if (first) {
  				payloadlen = max_payloadlen;
  				first = 0;
  			}
  
  			if ((len - (pos - &(fw->fw[block][2]))) < payloadlen)
  				payloadlen = (len - (pos - &(fw->fw[block][2])));
  
  			if (((pos + payloadlen) - &(fw->fw[block][2])) == len)
  				ack = 1;
  
  			memset(rdata.message, 0, sizeof(rdata.message));
  			rdata.message_type = 0;
  
  			memset(out, 0, sizeof(out));
  
  			out[MSGID] = msgid;
  			if (ack)
  				out[CTL] = 0x20;
  			out[TYPE] = 0xCA;
  			SET_SRC(out, my_hmid);
  			SET_DST(out, hmid);
  
  			memcpy(&out[PAYLOAD], pos, payloadlen);
  			SET_LEN_FROM_PAYLOADLEN(out, payloadlen);
  
  			if (send_hm_message(&dev, &rdata, out)) {
  				pos += payloadlen;
  			} else {
  				pos = &(fw->fw[block][2]);
  				cnt++;
  				if (cnt == MAX_RETRIES) {
  					fprintf(stderr, "\nToo many errors, giving up!\n");
  					exit(EXIT_FAILURE);
  				} else {
  					printf("Flashing %d blocks: %04u/%04u %c", fw->fw_blocks, block + 1, fw->fw_blocks, twiddlie[msgnum % sizeof(twiddlie)]);
  				}
  			}
  
  			msgnum++;
  
  			if (!debug) {
  				printf("\b\b\b\b\b\b\b\b\b\b\b%04u/%04u %c",
  					block + 1, fw->fw_blocks, twiddlie[msgnum % sizeof(twiddlie)]);
  				fflush(stdout);
  			}
  		} while((pos - &(fw->fw[block][2])) < len);
  		msgid++;
  	}
  
  	firmware_free(fw);
  
  	printf("\n");
  
  	if (!switch_speed(&dev, &rdata, 10)) {
  		fprintf(stderr, "Can't switch speed!\n");
  		exit(EXIT_FAILURE);
  	}
  
  	printf("Waiting for device to reboot\n");
  	rdata.message_type = MESSAGE_TYPE_R;
  
  	cnt = 10;
  	if (dev.type == DEVICE_TYPE_HMUARTLGW)
  		cnt = 200; /* FIXME */
  	do {
  		errno = 0;
  		switch(dev.type) {
  			case DEVICE_TYPE_CULFW:
  				pfd = culfw_poll(dev.culfw, 1000);
  				break;
  			case DEVICE_TYPE_HMCFGUSB:
  				pfd = hmcfgusb_poll(dev.hmcfgusb, 1000);
  				break;
  			case DEVICE_TYPE_HMUARTLGW:
  				pfd = hmuartlgw_poll(dev.hmuartlgw, 1000);
  				break;
  			default:
  				pfd = -1;
  				break;
  		}
  		if ((pfd < 0) && errno) {
  			if (errno != ETIMEDOUT) {
  				perror("\n\npoll");
  				exit(EXIT_FAILURE);
  			}
  		}
  		if (rdata.message_type == MESSAGE_TYPE_E) {
  			break;
  		}
  	} while(cnt--);
  
  	if (rdata.message_type == MESSAGE_TYPE_E) {
  		printf("Device rebooted\n");
  	}
  
  	switch(dev.type) {
  		case DEVICE_TYPE_HMCFGUSB:
  			hmcfgusb_close(dev.hmcfgusb);
  			hmcfgusb_exit();
  			break;
  		case DEVICE_TYPE_CULFW:
  			culfw_close(dev.culfw);
  			break;
  	}
  
  	return EXIT_SUCCESS;
  }
  