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Let ContikiMAC remember the state that the radio should have when duty cycling is turned off. This fixes a bug in which the radio was turned on after sending, even when NETSTACK_RDC.off(0) was enabled.

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This commit is contained in:
adamdunkels 2010-12-06 09:08:22 +00:00
parent e06dada659
commit 4c9793f428
1 changed files with 19 additions and 3 deletions
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22
core/net/mac/contikimac.c
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: contikimac.c,v 1.41 2010/11/02 11:00:08 adamdunkels Exp $
* $Id: contikimac.c,v 1.42 2010/12/06 09:08:22 adamdunkels Exp $
*/
/**
@ -153,6 +153,7 @@ static struct rtimer rt;
static struct pt pt;
static volatile uint8_t contikimac_is_on = 0;
static volatile uint8_t contikimac_keep_radio_on = 0;
static volatile unsigned char we_are_sending = 0;
static volatile unsigned char radio_is_on = 0;
@ -241,7 +242,9 @@ on(void)
static void
off(void)
{
if(contikimac_is_on && radio_is_on != 0 && is_streaming == 0/* && is_snooping == 0*/) {
if(contikimac_is_on && radio_is_on != 0 && is_streaming == 0 &&
contikimac_keep_radio_on == 0
/* && is_snooping == 0*/) {
radio_is_on = 0;
NETSTACK_RADIO.off();
}
@ -370,7 +373,8 @@ powercycle(struct rtimer *t, void *ptr)
periods = silence_periods = 0;
while(we_are_sending == 0 && radio_is_on &&
RTIMER_CLOCK_LT(RTIMER_NOW(), (start + LISTEN_TIME_AFTER_PACKET_DETECTED))) {
RTIMER_CLOCK_LT(RTIMER_NOW(),
(start + LISTEN_TIME_AFTER_PACKET_DETECTED))) {
/* Check for a number of consecutive periods of
non-activity. If we see two such periods, we turn the
@ -562,6 +566,7 @@ send_packet(mac_callback_t mac_callback, void *mac_callback_ptr)
int transmit_len;
int i;
int ret;
uint8_t contikimac_was_on;
#if WITH_CONTIKIMAC_HEADER
struct hdr *chdr;
#endif /* WITH_CONTIKIMAC_HEADER */
@ -737,6 +742,12 @@ send_packet(mac_callback_t mac_callback, void *mac_callback_ptr)
got_strobe_ack = 0;
/* Set contikimac_is_on to one to allow the on() and off() functions
to control the radio. We restore the old value of
contikimac_is_on when we are done. */
contikimac_was_on = contikimac_is_on;
contikimac_is_on = 1;
if(packetbuf_attr(PACKETBUF_ATTR_PACKET_TYPE) !=
PACKETBUF_ATTR_PACKET_TYPE_ACK && is_streaming == 0) {
/* Check if there are any transmissions by others. */
@ -767,6 +778,7 @@ send_packet(mac_callback_t mac_callback, void *mac_callback_ptr)
we_are_sending = 0;
off();
PRINTF("contikimac: collisions before sending\n");
contikimac_is_on = contikimac_was_on;
return MAC_TX_COLLISION;
}
@ -869,6 +881,7 @@ send_packet(mac_callback_t mac_callback, void *mac_callback_ptr)
compower_clear(&current_packet);
#endif /* CONTIKIMAC_CONF_COMPOWER */
contikimac_is_on = contikimac_was_on;
we_are_sending = 0;
/* Determine the return value that we will return from the
@ -1185,9 +1198,12 @@ static int
turn_off(int keep_radio_on)
{
contikimac_is_on = 0;
contikimac_keep_radio_on = keep_radio_on;
if(keep_radio_on) {
radio_is_on = 1;
return NETSTACK_RADIO.on();
} else {
radio_is_on = 0;
return NETSTACK_RADIO.off();
}
}