249 lines
7.1 KiB
C
249 lines
7.1 KiB
C
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/*
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* Copyright (c) 2011, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/**
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* \file
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* Slip-radio driver
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* \author
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* Niclas Finne <nfi@sics.se>
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* Joakim Eriksson <joakime@sics.se>
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* Andreas Reder
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*/
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#include "contiki.h"
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#include "net/uip.h"
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#include "net/uip-ds6.h"
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#include "dev/slip.h"
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#include <string.h>
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#include "net/netstack.h"
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#include "net/packetbuf.h"
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#define DEBUG DEBUG_FULL
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#include "net/uip-debug.h"
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#include "cmd.h"
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#include "slip-radio.h"
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#include "packetutils.h"
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#include <avr/eeprom.h>
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#include "watchdog.h"
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#include "params.h"
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extern uint16_t eemem_panid EEMEM;
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extern uint8_t eemem_channel[] EEMEM;
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#ifdef SLIP_RADIO_CONF_SENSORS
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extern const struct slip_radio_sensors SLIP_RADIO_CONF_SENSORS;
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#endif
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void slip_send_packet(const uint8_t *ptr, int len);
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/* max 16 packets at the same time??? */
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uint8_t packet_ids[16];
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int packet_pos;
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static int slip_radio_cmd_handler(const uint8_t *data, int len);
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int cmd_handler_cc2420(const uint8_t *data, int len);
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/*---------------------------------------------------------------------------*/
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#ifdef CMD_CONF_HANDLERS
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CMD_HANDLERS(CMD_CONF_HANDLERS);
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#else
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CMD_HANDLERS(slip_radio_cmd_handler);
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#endif
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/*---------------------------------------------------------------------------*/
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static void
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packet_sent(void *ptr, int status, int transmissions)
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{
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uint8_t buf[20];
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uint8_t sid;
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int pos;
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sid = *((uint8_t *)ptr);
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PRINTF("Slip-radio: packet sent! sid: %d, status: %d, tx: %d\n",
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sid, status, transmissions);
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/* packet callback from lower layers */
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/* neighbor_info_packet_sent(status, transmissions); */
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pos = 0;
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buf[pos++] = '!';
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buf[pos++] = 'R';
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buf[pos++] = sid;
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buf[pos++] = status; /* one byte ? */
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buf[pos++] = transmissions;
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cmd_send(buf, pos);
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}
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/*---------------------------------------------------------------------------*/
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static int
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slip_radio_cmd_handler(const uint8_t *data, int len)
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{
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int i;
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uint16_t panid;
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if(data[0] == '!') {
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/* should send out stuff to the radio - ignore it as IP */
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/* --- s e n d --- */
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if(data[1] == 'S') {
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int pos;
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packet_ids[packet_pos] = data[2];
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packetbuf_clear();
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pos = packetutils_deserialize_atts(&data[3], len - 3);
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if(pos < 0) {
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PRINTF("slip-radio: illegal packet attributes\n");
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return 1;
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}
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pos += 3;
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len -= pos;
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if(len > PACKETBUF_SIZE) {
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len = PACKETBUF_SIZE;
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}
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memcpy(packetbuf_dataptr(), &data[pos], len);
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packetbuf_set_datalen(len);
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PRINTF("slip-radio: sending %u (%d bytes)\n",
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data[2], packetbuf_datalen());
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/* parse frame before sending to get addresses, etc. */
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no_framer.parse();
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NETSTACK_MAC.send(packet_sent, &packet_ids[packet_pos]);
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packet_pos++;
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if(packet_pos >= sizeof(packet_ids)) {
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packet_pos = 0;
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}
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return 1;
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}
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} else if(uip_buf[0] == '?') {
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PRINTF("Got request message of type %c\n", uip_buf[1]);
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if(data[1] == 'M') {
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/* this is just a test so far... just to see if it works */
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uip_buf[0] = '!';
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uip_buf[1] = 'M';
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for(i = 0; i < 8; i++) {
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uip_buf[2 + i] = uip_lladdr.addr[i];
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}
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uip_len = 10;
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cmd_send(uip_buf, uip_len);
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return 1;
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} else if( data[1] == 'P'){
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panid = (data[2] << 8) + data[3];
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PRINTF("slip-radio: received change panid command, new panid %u\n", len);
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cli();
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eeprom_write_word(&eemem_panid, panid);
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sei();
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watchdog_reboot();
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}
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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void
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slip_radio_cmd_output(const uint8_t *data, int data_len)
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{
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slip_send_packet(data, data_len);
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}
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/*---------------------------------------------------------------------------*/
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static void
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slip_input_callback(void)
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{
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PRINTF("SR-SIN: %u '%c%c'\n", uip_len, uip_buf[0], uip_buf[1]);
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cmd_input(uip_buf, uip_len);
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uip_len = 0;
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}
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/*---------------------------------------------------------------------------*/
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static void
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init(void)
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{
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#ifndef BAUD2UBR
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#define BAUD2UBR(baud) baud
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#endif
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slip_arch_init(BAUD2UBR(115200));
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process_start(&slip_process, NULL);
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slip_set_input_callback(slip_input_callback);
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packet_pos = 0;
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}
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/*---------------------------------------------------------------------------*/
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#if !SLIP_RADIO_CONF_NO_PUTCHAR
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#undef putchar
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int
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putchar(int c)
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{
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#define SLIP_END 0300
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static char debug_frame = 0;
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if(!debug_frame) { /* Start of debug output */
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slip_arch_writeb(SLIP_END);
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slip_arch_writeb('\r'); /* Type debug line == '\r' */
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debug_frame = 1;
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}
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/* Need to also print '\n' because for example COOJA will not show
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any output before line end */
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slip_arch_writeb((char)c);
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/*
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* Line buffered output, a newline marks the end of debug output and
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* implicitly flushes debug output.
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*/
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if(c == '\n') {
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slip_arch_writeb(SLIP_END);
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debug_frame = 0;
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}
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return c;
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}
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#endif
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/*---------------------------------------------------------------------------*/
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PROCESS(slip_radio_process, "Slip radio process");
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AUTOSTART_PROCESSES(&slip_radio_process);
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(slip_radio_process, ev, data)
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{
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static struct etimer et;
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PROCESS_BEGIN();
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init();
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NETSTACK_RDC.off(1);
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#ifdef SLIP_RADIO_CONF_SENSORS
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SLIP_RADIO_CONF_SENSORS.init();
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#endif
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printf("Slip Radio started...\n");
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etimer_set(&et, CLOCK_SECOND * 3);
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while(1) {
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PROCESS_YIELD();
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if(etimer_expired(&et)) {
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etimer_reset(&et);
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#ifdef SLIP_RADIO_CONF_SENSORS
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SLIP_RADIO_CONF_SENSORS.send();
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#endif
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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