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* Set CC2420_RXCTRL1.RXBPF_LOCUR=1 as recommended in data sheet.

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* Use PRINTF to disable debug printfs.
This commit is contained in:
bg- 2006-11-17 12:27:23 +00:00
parent d6a2211918
commit 27e531baad
1 changed files with 29 additions and 9 deletions
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36
core/dev/cc2420.c
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: cc2420.c,v 1.4 2006/08/09 17:39:39 bg- Exp $
* @(#)$Id: cc2420.c,v 1.5 2006/11/17 12:27:23 bg- Exp $
*/
/*
* This code is almost device independent and should be possible to
@ -53,6 +53,12 @@
#include "dev/cc2420.h"
#include "dev/cc2420_const.h"
#if 0
#define PRINTF(...) printf(__VA_ARGS__)
#else
#define PRINTF(...) do {} while (0)
#endif
PROCESS(cc2420_process, "CC2420 driver");
PROCESS(cc2420_retransmit_process, "CC2420 retransmit process");
@ -112,6 +118,7 @@ cc2420_status(void)
#define RXFIFO_PROTECTION (1 << 9)
#define CORR_THR(n) (((n) & 0x1f) << 6)
#define FIFOP_THR(n) ((n) & 0x7f)
#define RXBPF_LOCUR (1 << 13);
void
cc2420_init(void)
@ -142,8 +149,12 @@ cc2420_init(void)
reg |= AUTOACK;
cc2420_setreg(CC2420_MDMCTRL0, reg);
/* Set the correlation threshold = 20. */
/* Change default values as recomended in the data sheet, */
/* correlation threshold = 20, RX bandpass filter = 1.3uA. */
cc2420_setreg(CC2420_MDMCTRL1, CORR_THR(20));
reg = cc2420_getreg(CC2420_RXCTRL1);
reg |= RXBPF_LOCUR;
cc2420_setreg(CC2420_RXCTRL1, reg);
/* Set the FIFOP threshold to maximum. */
cc2420_setreg(CC2420_IOCFG0, FIFOP_THR(127));
@ -239,6 +250,8 @@ cc2420_resend(void)
if (SFD_IS_1)
return 0; /* Transmission has started. */
PRINTF("REFOO\n");
return 0;
/*
* In the exceptional case that transmission never occurred we try
* again but never verify if the transmission ever starts. If a new
@ -338,7 +351,6 @@ __cc2420_intr(void)
FASTSPI_READ_FIFO_BYTE(length);
if (length > MAX_PACKET_LEN) {
/* Oops, we must be out of sync. */
//printf("__cc2420_intr out of sync\n");
FASTSPI_STROBE(CC2420_SFLUSHRX);
FASTSPI_STROBE(CC2420_SFLUSHRX);
return 0;
@ -400,7 +412,7 @@ PROCESS_THREAD(cc2420_process, ev, data)
if (len > 0) {
/* Read payload and two bytes of footer */
if ((len - 2) > (UIP_BUFSIZE - UIP_LLH_LEN) || len < 2) {
printf("cc2420_process too big len=%d\n", len);
PRINTF("cc2420_process too big len=%d\n", len);
s = splhigh();
FASTSPI_READ_FIFO_GARBAGE(len);
rx_fifo_remaining_bytes = 0; /* RX FIFO emptied! */
@ -468,6 +480,7 @@ PROCESS_THREAD(cc2420_retransmit_process, ev, data)
{
static u8_t seq, n;
static struct etimer etimer;
static unsigned taccr1;
PROCESS_BEGIN();
@ -477,7 +490,16 @@ PROCESS_THREAD(cc2420_retransmit_process, ev, data)
n = 0;
do {
taccr1 = TACCR1 - TAR;
#if 0
if(taccr1 <= 14)
etimer_set(&etimer, RETRANSMIT_TIMEOUT + 1);
else
etimer_set(&etimer, RETRANSMIT_TIMEOUT + 0);
#else
etimer_set(&etimer, RETRANSMIT_TIMEOUT);
#endif
PROCESS_WAIT_UNTIL(etimer_expired(&etimer) || ev == PROCESS_EVENT_POLL);
if (ev == PROCESS_EVENT_POLL) {
etimer_stop(&etimer);
@ -487,6 +509,7 @@ PROCESS_THREAD(cc2420_retransmit_process, ev, data)
else if (n < MAX_RETRANSMISSIONS) {
cc2420_resend();
n++;
PRINTF("RETRANS %d %u\n", n, taccr1);
} else {
break;
}
@ -494,7 +517,7 @@ PROCESS_THREAD(cc2420_retransmit_process, ev, data)
neigbour_update(last_correspondent, n);
#if 0
#define CORRELATION_2_X(c) (((c) < 48) ? 0 : ((c) - 48))
printf("%04x %2d %2d %2u %u\n",
PRINTF("%04x %2d %2d %2u %u\n",
last_correspondent, n,
RSSI_2_ED(cc2420_last_rssi),
CORRELATION_2_X(cc2420_last_correlation),
@ -578,7 +601,6 @@ neigbour_update(u16_t mac, int nretrans)
t->nretrans = (t->nretrans + nretrans)/2;
}
t->expire = MAX_EXPIRE;
//printf("+ %04x %d/4 %d\n", t->mac, t->nretrans, t->expire);
return;
}
@ -606,7 +628,6 @@ cc2420_check_remote(u16_t mac)
if (now >= AGE_INTERVAL) {
unsigned i;
//printf("aging\n");
for (i = 0; i < NNEIGBOURS; i++)
if (neigbours[i].expire >= now)
neigbours[i].expire -= now;
@ -616,7 +637,6 @@ cc2420_check_remote(u16_t mac)
}
t = lookup(mac);
//printf(" %04x %d/4 %d\n", t->mac, t->nretrans, t->expire);
if (t->mac != mac)
return -1; /* unknown */
else if (t->nretrans >= SCALE_RETRANS_THRESHOLD)