Contiki-NG
cc2520-arch.c
1 /*
2  * Copyright (c) 2011, Swedish Institute of Computer Science
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29 
30 #include "contiki.h"
31 #include "contiki-net.h"
32 
33 #include "dev/spi-legacy.h"
34 #include "dev/cc2520/cc2520.h"
35 #include "isr_compat.h"
36 
37 #ifdef CC2520_CONF_SFD_TIMESTAMPS
38 #define CONF_SFD_TIMESTAMPS CC2520_CONF_SFD_TIMESTAMPS
39 #endif /* CC2520_CONF_SFD_TIMESTAMPS */
40 
41 #ifndef CONF_SFD_TIMESTAMPS
42 #define CONF_SFD_TIMESTAMPS 0
43 #endif /* CONF_SFD_TIMESTAMPS */
44 
45 #ifdef CONF_SFD_TIMESTAMPS
46 #include "cc2520-arch-sfd.h"
47 #endif
48 
49 /*---------------------------------------------------------------------------*/
50 ISR(CC2520_IRQ, cc2520_port1_interrupt)
51 {
52  if(cc2520_interrupt()) {
53  LPM4_EXIT;
54  }
55 }
56 /*---------------------------------------------------------------------------*/
57 void
58 cc2520_arch_init(void)
59 {
60  spi_init();
61 
62  /* all input by default, set these as output */
63  CC2520_CSN_PORT(DIR) |= BV(CC2520_CSN_PIN);
64  CC2520_VREG_PORT(DIR) |= BV(CC2520_VREG_PIN);
65  CC2520_RESET_PORT(DIR) |= BV(CC2520_RESET_PIN);
66 
67  CC2520_FIFOP_PORT(DIR) &= ~(BV(CC2520_FIFOP_PIN));
68  CC2520_FIFO_PORT(DIR) &= ~(BV(CC2520_FIFO_PIN));
69  CC2520_CCA_PORT(DIR) &= ~(BV(CC2520_CCA_PIN));
70  CC2520_SFD_PORT(DIR) &= ~(BV(CC2520_SFD_PIN));
71 
72 #if CONF_SFD_TIMESTAMPS
73  cc2520_arch_sfd_init();
74 #endif
75 
76  CC2520_SPI_DISABLE(); /* Unselect radio. */
77 }
78 /*---------------------------------------------------------------------------*/
Basic SPI macros