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waiting for valid RSSI bugfix, minor cleanup

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This commit is contained in:
adamdunkels 2007-10-25 13:29:21 +00:00
parent dd8469ee4a
commit 127503e2a6
1 changed files with 8 additions and 14 deletions
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22
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 1.12 2007/10/25 09:38:15 adamdunkels Exp $
* @(#)$Id: simple-cc2420.c,v 1.13 2007/10/25 13:29:21 adamdunkels Exp $
*/
/*
* This code is almost device independent and should be easy to port.
@ -255,14 +255,11 @@ simple_cc2420_send(const u8_t *payload, u16_t payload_len)
/* Wait for previous transmission to finish and RSSI. */
do {
spiStatusByte = status();
if(!(spiStatusByte & BV(CC2420_RSSI_VALID))) { /* RSSI needed by CCA */
continue;
}
} while(spiStatusByte & BV(CC2420_TX_ACTIVE));
/* Write packet to TX FIFO, appending FCS if AUTOCRC is enabled. */
strobe(CC2420_SFLUSHTX); /* Cancel send that never started. */
} while(spiStatusByte & BV(CC2420_TX_ACTIVE) &&
!(spiStatusByte & BV(CC2420_RSSI_VALID)));
/* Write packet to TX FIFO. */
strobe(CC2420_SFLUSHTX);
{
u8_t total_len = /*2 +*/ payload_len + 2; /* 2 bytes time stamp,
@ -310,7 +307,7 @@ simple_cc2420_send(const u8_t *payload, u16_t payload_len)
ENERGEST_OFF(ENERGEST_TYPE_TRANSMIT);
ENERGEST_ON(ENERGEST_TYPE_LISTEN);
RELEASE_LOCK();
RELEASE_LOCK();
return 0; /* Transmission has started. */
}
}
@ -371,7 +368,7 @@ simple_cc2420_set_chan_pan_addr(unsigned channel, /* 11 - 26 */
u8_t spiStatusByte;
u16_t f = channel;
f = 5*(f - 11) + 357 + 0x4000;
f = 5 * (f - 11) + 357 + 0x4000;
/*
* Writing RAM requires crystal oscillator to be stable.
*/
@ -460,7 +457,7 @@ simple_cc2420_read(u8_t *buf, u16_t bufsize)
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);
// FASTSPI_READ_FIFO_GARBAGE(2);
FASTSPI_READ_FIFO_NO_WAIT(buf, bufsize);
FASTSPI_READ_FIFO_GARBAGE(len - bufsize - 2);
FASTSPI_READ_FIFO_NO_WAIT(footer, 2);
@ -477,9 +474,6 @@ simple_cc2420_read(u8_t *buf, u16_t bufsize)
if(footer[1] & FOOTER1_CRC_OK) {
simple_cc2420_last_rssi = footer[0];
simple_cc2420_last_correlation = footer[1] & FOOTER1_CORRELATION;
/* if((h.fc0 & FC0_TYPE_MASK) == FC0_TYPE_DATA) {
uip_len = len - 2;
}*/
RIMESTATS_ADD(llrx);
} else {
RIMESTATS_ADD(badcrc);