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bug fix: we need to explicitly turn off the cc2420 listen mode after a packet transmission

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This commit is contained in:
fros4943 2009-08-19 12:00:04 +00:00
parent 5e0d762e79
commit 18a98bb573
1 changed files with 30 additions and 26 deletions
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56
core/dev/cc2420.c
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@ -28,7 +28,7 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* @(#)$Id: cc2420.c,v 1.31 2009/07/28 22:24:53 joxe Exp $ * @(#)$Id: cc2420.c,v 1.32 2009/08/19 12:00:04 fros4943 Exp $
*/ */
/* /*
* This code is almost device independent and should be easy to port. * This code is almost device independent and should be easy to port.
@ -165,7 +165,7 @@ static void
flushrx(void) flushrx(void)
{ {
uint8_t dummy; uint8_t dummy;
FASTSPI_READ_FIFO_BYTE(dummy); FASTSPI_READ_FIFO_BYTE(dummy);
FASTSPI_STROBE(CC2420_SFLUSHRX); FASTSPI_STROBE(CC2420_SFLUSHRX);
FASTSPI_STROBE(CC2420_SFLUSHRX); FASTSPI_STROBE(CC2420_SFLUSHRX);
@ -204,10 +204,10 @@ off(void)
{ {
PRINTF("off\n"); PRINTF("off\n");
receive_on = 0; receive_on = 0;
/* Wait for transmission to end before turning radio off. */ /* Wait for transmission to end before turning radio off. */
while(status() & BV(CC2420_TX_ACTIVE)); while(status() & BV(CC2420_TX_ACTIVE));
strobe(CC2420_SRFOFF); strobe(CC2420_SRFOFF);
DISABLE_FIFOP_INT(); DISABLE_FIFOP_INT();
ENERGEST_OFF(ENERGEST_TYPE_LISTEN); ENERGEST_OFF(ENERGEST_TYPE_LISTEN);
@ -292,7 +292,7 @@ cc2420_init(void)
reg = getreg(CC2420_RXCTRL1); reg = getreg(CC2420_RXCTRL1);
reg |= RXBPF_LOCUR; reg |= RXBPF_LOCUR;
setreg(CC2420_RXCTRL1, reg); setreg(CC2420_RXCTRL1, reg);
/* Set the FIFOP threshold to maximum. */ /* Set the FIFOP threshold to maximum. */
setreg(CC2420_IOCFG0, FIFOP_THR(127)); setreg(CC2420_IOCFG0, FIFOP_THR(127));
@ -326,9 +326,9 @@ cc2420_send(const void *payload, unsigned short payload_len)
} else { } else {
cc2420_set_txpower(CC2420_TXPOWER_MAX); cc2420_set_txpower(CC2420_TXPOWER_MAX);
} }
PRINTF("cc2420: sending %d bytes\n", payload_len); PRINTF("cc2420: sending %d bytes\n", payload_len);
RIMESTATS_ADD(lltx); RIMESTATS_ADD(lltx);
/* Wait for any previous transmission to finish. */ /* Wait for any previous transmission to finish. */
@ -373,7 +373,7 @@ cc2420_send(const void *payload, unsigned short payload_len)
#else /* WITH_SEND_CCA */ #else /* WITH_SEND_CCA */
strobe(CC2420_STXON); strobe(CC2420_STXON);
#endif /* WITH_SEND_CCA */ #endif /* WITH_SEND_CCA */
for(i = LOOP_20_SYMBOLS; i > 0; i--) { for(i = LOOP_20_SYMBOLS; i > 0; i--) {
if(SFD_IS_1) { if(SFD_IS_1) {
#if CC2420_CONF_TIMESTAMPS #if CC2420_CONF_TIMESTAMPS
@ -406,13 +406,17 @@ cc2420_send(const void *payload, unsigned short payload_len)
ENERGEST_OFF(ENERGEST_TYPE_TRANSMIT); ENERGEST_OFF(ENERGEST_TYPE_TRANSMIT);
if(receive_on) { if(receive_on) {
ENERGEST_ON(ENERGEST_TYPE_LISTEN); ENERGEST_ON(ENERGEST_TYPE_LISTEN);
} else {
/* We need to explicitly turn off the radio,
* since STXON[CCA] -> TX_ACTIVE -> RX_ACTIVE */
off();
} }
RELEASE_LOCK(); RELEASE_LOCK();
return 0; return 0;
} }
} }
/* If we are using WITH_SEND_CCA, we get here if the packet wasn't /* If we are using WITH_SEND_CCA, we get here if the packet wasn't
transmitted because of other channel activity. */ transmitted because of other channel activity. */
RIMESTATS_ADD(contentiondrop); RIMESTATS_ADD(contentiondrop);
@ -444,7 +448,7 @@ cc2420_off(void)
lock_off = 1; lock_off = 1;
return 1; return 1;
} }
off(); off();
return 1; return 1;
} }
@ -480,7 +484,7 @@ cc2420_set_channel(int c)
*/ */
channel = c; channel = c;
f = 5 * (c - 11) + 357 + 0x4000; f = 5 * (c - 11) + 357 + 0x4000;
/* /*
* Writing RAM requires crystal oscillator to be stable. * Writing RAM requires crystal oscillator to be stable.
@ -558,13 +562,13 @@ PROCESS_THREAD(cc2420_process, ev, data)
PROCESS_BEGIN(); PROCESS_BEGIN();
PRINTF("cc2420_process: started\n"); PRINTF("cc2420_process: started\n");
while(1) { while(1) {
PROCESS_YIELD_UNTIL(ev == PROCESS_EVENT_POLL); PROCESS_YIELD_UNTIL(ev == PROCESS_EVENT_POLL);
#if CC2420_TIMETABLE_PROFILING #if CC2420_TIMETABLE_PROFILING
TIMETABLE_TIMESTAMP(cc2420_timetable, "poll"); TIMETABLE_TIMESTAMP(cc2420_timetable, "poll");
#endif /* CC2420_TIMETABLE_PROFILING */ #endif /* CC2420_TIMETABLE_PROFILING */
if(receiver_callback != NULL) { if(receiver_callback != NULL) {
PRINTF("cc2420_process: calling receiver callback\n"); PRINTF("cc2420_process: calling receiver callback\n");
receiver_callback(&cc2420_driver); receiver_callback(&cc2420_driver);
@ -594,12 +598,12 @@ cc2420_read(void *buf, unsigned short bufsize)
#if CC2420_CONF_TIMESTAMPS #if CC2420_CONF_TIMESTAMPS
struct timestamp t; struct timestamp t;
#endif /* CC2420_CONF_TIMESTAMPS */ #endif /* CC2420_CONF_TIMESTAMPS */
if(!FIFOP_IS_1) { if(!FIFOP_IS_1) {
/* If FIFOP is 0, there is no packet in the RXFIFO. */ /* If FIFOP is 0, there is no packet in the RXFIFO. */
return 0; return 0;
} }
#if CC2420_CONF_TIMESTAMPS #if CC2420_CONF_TIMESTAMPS
if(interrupt_time_set) { if(interrupt_time_set) {
cc2420_time_of_arrival = interrupt_time; cc2420_time_of_arrival = interrupt_time;
@ -627,7 +631,7 @@ cc2420_read(void *buf, unsigned short bufsize)
RELEASE_LOCK(); RELEASE_LOCK();
return 0; return 0;
} }
if(len - AUX_LEN > bufsize) { if(len - AUX_LEN > bufsize) {
flushrx(); flushrx();
RIMESTATS_ADD(toolong); RIMESTATS_ADD(toolong);
@ -643,13 +647,13 @@ cc2420_read(void *buf, unsigned short bufsize)
getrxdata(&t, TIMESTAMP_LEN); getrxdata(&t, TIMESTAMP_LEN);
#endif /* CC2420_CONF_TIMESTAMPS */ #endif /* CC2420_CONF_TIMESTAMPS */
getrxdata(footer, FOOTER_LEN); getrxdata(footer, FOOTER_LEN);
#if CC2420_CONF_CHECKSUM #if CC2420_CONF_CHECKSUM
if(checksum != crc16_data(buf, len - AUX_LEN, 0)) { if(checksum != crc16_data(buf, len - AUX_LEN, 0)) {
PRINTF("checksum failed 0x%04x != 0x%04x\n", PRINTF("checksum failed 0x%04x != 0x%04x\n",
checksum, crc16_data(buf, len - AUX_LEN, 0)); checksum, crc16_data(buf, len - AUX_LEN, 0));
} }
if(footer[1] & FOOTER1_CRC_OK && if(footer[1] & FOOTER1_CRC_OK &&
checksum == crc16_data(buf, len - AUX_LEN, 0)) { checksum == crc16_data(buf, len - AUX_LEN, 0)) {
#else #else
@ -661,25 +665,25 @@ cc2420_read(void *buf, unsigned short bufsize)
packetbuf_set_attr(PACKETBUF_ATTR_RSSI, cc2420_last_rssi); packetbuf_set_attr(PACKETBUF_ATTR_RSSI, cc2420_last_rssi);
packetbuf_set_attr(PACKETBUF_ATTR_LINK_QUALITY, cc2420_last_correlation); packetbuf_set_attr(PACKETBUF_ATTR_LINK_QUALITY, cc2420_last_correlation);
RIMESTATS_ADD(llrx); RIMESTATS_ADD(llrx);
#if CC2420_CONF_TIMESTAMPS #if CC2420_CONF_TIMESTAMPS
cc2420_time_of_departure = cc2420_time_of_departure =
t.time + t.time +
setup_time_for_transmission + setup_time_for_transmission +
(total_time_for_transmission * (len - 2)) / total_transmission_len; (total_time_for_transmission * (len - 2)) / total_transmission_len;
cc2420_authority_level_of_sender = t.authority_level; cc2420_authority_level_of_sender = t.authority_level;
packetbuf_set_attr(PACKETBUF_ATTR_TIMESTAMP, t.time); packetbuf_set_attr(PACKETBUF_ATTR_TIMESTAMP, t.time);
#endif /* CC2420_CONF_TIMESTAMPS */ #endif /* CC2420_CONF_TIMESTAMPS */
} else { } else {
RIMESTATS_ADD(badcrc); RIMESTATS_ADD(badcrc);
len = AUX_LEN; len = AUX_LEN;
} }
/* Clean up in case of FIFO overflow! This happens for every full /* Clean up in case of FIFO overflow! This happens for every full
* length frame and is signaled by FIFOP = 1 and FIFO = 0. * length frame and is signaled by FIFOP = 1 and FIFO = 0.
*/ */
@ -690,9 +694,9 @@ cc2420_read(void *buf, unsigned short bufsize)
/* Another packet has been received and needs attention. */ /* Another packet has been received and needs attention. */
process_poll(&cc2420_process); process_poll(&cc2420_process);
} }
RELEASE_LOCK(); RELEASE_LOCK();
if(len < AUX_LEN) { if(len < AUX_LEN) {
return 0; return 0;
} }
@ -723,7 +727,7 @@ cc2420_rssi(void)
{ {
int rssi; int rssi;
int radio_was_off = 0; int radio_was_off = 0;
if(!receive_on) { if(!receive_on) {
radio_was_off = 1; radio_was_off = 1;
cc2420_on(); cc2420_on();