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Re-added timestamp support for outbound packets that was removed when switching to the new radio API

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This commit is contained in:
adamdunkels 2010-12-16 22:40:52 +00:00
parent 417c7f8c70
commit d267b5ca94
1 changed files with 18 additions and 8 deletions
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26
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 1.61 2010/12/05 00:14:24 adamdunkels Exp $
* @(#)$Id: cc2420.c,v 1.62 2010/12/16 22:40:52 adamdunkels Exp $
*/
/*
* This code is almost device independent and should be easy to port.
@ -117,6 +117,11 @@ static uint8_t volatile pending;
while(!(cond) && RTIMER_CLOCK_LT(RTIMER_NOW(), t0 + (max_time))); \
} while(0)
volatile uint8_t cc2420_sfd_counter;
volatile uint16_t cc2420_sfd_start_time;
volatile uint16_t cc2420_sfd_end_time;
static volatile uint16_t last_packet_timestamp;
/*---------------------------------------------------------------------------*/
PROCESS(cc2420_process, "CC2420 driver");
/*---------------------------------------------------------------------------*/
@ -206,7 +211,6 @@ on(void)
BUSYWAIT_UNTIL(status() & (BV(CC2420_XOSC16M_STABLE)), RTIMER_SECOND / 100);
ENERGEST_ON(ENERGEST_TYPE_LISTEN);
LEDS_ON(LEDS_GREEN);
receive_on = 1;
}
static void
@ -221,7 +225,6 @@ off(void)
ENERGEST_OFF(ENERGEST_TYPE_LISTEN);
strobe(CC2420_SRFOFF);
CC2420_DISABLE_FIFOP_INT();
LEDS_OFF(LEDS_GREEN);
if(!CC2420_FIFOP_IS_1) {
flushrx();
@ -236,7 +239,6 @@ static void RELEASE_LOCK(void) {
lock_on = 0;
}
if(lock_off) {
LEDS_OFF(LEDS_BLUE);
off();
lock_off = 0;
}
@ -381,9 +383,18 @@ cc2420_transmit(unsigned short payload_len)
#else /* WITH_SEND_CCA */
strobe(CC2420_STXON);
#endif /* WITH_SEND_CCA */
for(i = LOOP_20_SYMBOLS; i > 0; i--) {
if(CC2420_SFD_IS_1) {
{
rtimer_clock_t sfd_timestamp;
sfd_timestamp = cc2420_sfd_start_time;
if(packetbuf_attr(PACKETBUF_ATTR_PACKET_TYPE) ==
PACKETBUF_ATTR_PACKET_TYPE_TIMESTAMP) {
/* Write timestamp to last two bytes of packet in TXFIFO. */
CC2420_WRITE_RAM(&sfd_timestamp, CC2420RAM_TXFIFO + payload_len - 1, 2);
}
}
if(!(status() & BV(CC2420_TX_ACTIVE))) {
/* SFD went high but we are not transmitting. This means that
we just started receiving a packet, so we drop the
@ -395,7 +406,6 @@ cc2420_transmit(unsigned short payload_len)
ENERGEST_OFF(ENERGEST_TYPE_LISTEN);
}
ENERGEST_ON(ENERGEST_TYPE_TRANSMIT);
/* We wait until transmission has ended so that we get an
accurate measurement of the transmission time.*/
BUSYWAIT_UNTIL(!(status() & BV(CC2420_TX_ACTIVE)), RTIMER_SECOND / 10);
@ -488,7 +498,6 @@ cc2420_off(void)
radio should be turned off when the lock is unlocked. */
if(locked) {
/* printf("Off when locked (%d)\n", locked);*/
LEDS_ON(LEDS_GREEN + LEDS_BLUE);
lock_off = 1;
return 1;
}
@ -514,7 +523,6 @@ cc2420_on(void)
return 1;
}
if(locked) {
LEDS_ON(LEDS_GREEN + LEDS_RED);
lock_on = 1;
return 1;
}
@ -615,6 +623,7 @@ cc2420_interrupt(void)
TIMETABLE_TIMESTAMP(cc2420_timetable, "interrupt");
#endif /* CC2420_TIMETABLE_PROFILING */
last_packet_timestamp = cc2420_sfd_start_time;
pending++;
cc2420_packets_seen++;
return 1;
@ -636,6 +645,7 @@ PROCESS_THREAD(cc2420_process, ev, data)
PRINTF("cc2420_process: calling receiver callback\n");
packetbuf_clear();
packetbuf_set_attr(PACKETBUF_ATTR_TIMESTAMP, last_packet_timestamp);
len = cc2420_read(packetbuf_dataptr(), PACKETBUF_SIZE);
if(len > 0) {
packetbuf_set_datalen(len);