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Enabled dropping of packets with bad CRC. Added statistics gathering. Bugfix when packets where shorter than 2 bytes

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This commit is contained in:
adamdunkels 2007-05-22 20:51:30 +00:00
parent 0e4c30ccb4
commit b8d586b210
1 changed files with 19 additions and 5 deletions
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24
core/dev/simple-cc2420.c
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: simple-cc2420.c,v 1.6 2007/05/15 07:53:09 adamdunkels Exp $
* @(#)$Id: simple-cc2420.c,v 1.7 2007/05/22 20:51:30 adamdunkels Exp $
*/
/*
* This code is almost device independent and should be easy to port.
@ -49,6 +49,8 @@
#include "dev/simple-cc2420.h"
#include "dev/cc2420_const.h"
#include "net/rime/rimestats.h"
#define FOOTER1_CRC_OK 0x80
#define FOOTER1_CORRELATION 0x7f
@ -231,8 +233,12 @@ simple_cc2420_send(const u8_t *payload, u16_t payload_len)
return -2;
}
/* PRINTF("simple_cc2420_send: %d bytes\n", payload_len);*/
GET_LOCK();
RIMESTATS_ADD(lltx);
/* Wait for previous transmission to finish and RSSI. */
do {
spiStatusByte = status();
@ -247,18 +253,18 @@ simple_cc2420_send(const u8_t *payload, u16_t payload_len)
ENERGEST_ON(ENERGEST_TYPE_TRANSMIT);
{
u8_t total_len = 2 + payload_len + 2; /* 2 bytes time stamp,
u8_t total_len = /*2 +*/ payload_len + 2; /* 2 bytes time stamp,
2 bytes footer. */
FASTSPI_WRITE_FIFO(&total_len, 1);
}
FASTSPI_WRITE_FIFO(payload, payload_len);
{
/* {
rtimer_clock_t t;
t = rtimer_arch_now();
FASTSPI_WRITE_FIFO(&t, 2);
}
}*/
if(FIFOP_IS_1 && !FIFO_IS_1) {
/* RXFIFO overflow, send on retransmit. */
@ -427,6 +433,7 @@ simple_cc2420_read(u8_t *buf, u16_t bufsize)
FASTSPI_STROBE(CC2420_SFLUSHRX);
FASTSPI_STROBE(CC2420_SFLUSHRX);
packet_seen = 0;
RIMESTATS_ADD(badsynch);
RELEASE_LOCK();
return 0;
}
@ -436,6 +443,7 @@ simple_cc2420_read(u8_t *buf, u16_t bufsize)
PRINTF("simple_cc2420_read: len %d\n", len);
if(len < 2) {
FASTSPI_READ_FIFO_GARBAGE(len);
RIMESTATS_ADD(tooshort);
} else if(len - 2 > bufsize) {
PRINTF("simple_cc2420_read too big len=%d bufsize %d\n", len, bufsize);
// FASTSPI_READ_FIFO_GARBAGE(2);
@ -443,7 +451,8 @@ simple_cc2420_read(u8_t *buf, u16_t bufsize)
FASTSPI_READ_FIFO_GARBAGE(len - bufsize - 2);
FASTSPI_READ_FIFO_NO_WAIT(footer, 2);
// len = bufsize - 2; /* We eventually return len - 2 */
len = 4;
len = 2;
RIMESTATS_ADD(toolong);
} else {
rtimer_clock_t t;
// FASTSPI_READ_FIFO_NO_WAIT(&t, 2); /* Time stamp */
@ -457,8 +466,13 @@ simple_cc2420_read(u8_t *buf, u16_t bufsize)
/* if((h.fc0 & FC0_TYPE_MASK) == FC0_TYPE_DATA) {
uip_len = len - 2;
}*/
RIMESTATS_ADD(llrx);
} else {
RIMESTATS_ADD(badcrc);
len = 2;
}
// PRINTF("Time 0x%02x\n", t);
}
}