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Fixed problem with the radio driver changing transmission power to max when not specified at transmission. Also fixed bug where the lock was released when setting the transmission power.

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Thanks to Djamel Djenouri and Marcus Lundn for identifying the problem.
This commit is contained in:
nifi 2009-08-19 15:05:05 +00:00
parent 18a98bb573
commit c81dbb6c89
1 changed files with 29 additions and 11 deletions
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40
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 1.32 2009/08/19 12:00:04 fros4943 Exp $
* @(#)$Id: cc2420.c,v 1.33 2009/08/19 15:05:05 nifi Exp $
*/
/*
* This code is almost device independent and should be easy to port.
@ -240,6 +240,16 @@ setreg(enum cc2420_register regname, unsigned value)
FASTSPI_SETREG(regname, value);
}
/*---------------------------------------------------------------------------*/
static void
set_txpower(uint8_t power)
{
uint16_t reg;
reg = getreg(CC2420_TXCTRL);
reg = (reg & 0xffe0) | (power & 0x1f);
setreg(CC2420_TXCTRL, reg);
}
/*---------------------------------------------------------------------------*/
#define AUTOACK (1 << 4)
#define ADR_DECODE (1 << 11)
#define RXFIFO_PROTECTION (1 << 9)
@ -310,7 +320,7 @@ cc2420_init(void)
int
cc2420_send(const void *payload, unsigned short payload_len)
{
int i;
int i, txpower;
uint8_t total_len;
#if CC2420_CONF_TIMESTAMPS
struct timestamp timestamp;
@ -318,13 +328,14 @@ cc2420_send(const void *payload, unsigned short payload_len)
#if CC2420_CONF_CHECKSUM
uint16_t checksum;
#endif /* CC2420_CONF_CHECKSUM */
GET_LOCK();
txpower = 0;
if(packetbuf_attr(PACKETBUF_ATTR_RADIO_TXPOWER) > 0) {
cc2420_set_txpower(packetbuf_attr(PACKETBUF_ATTR_RADIO_TXPOWER) - 1);
} else {
cc2420_set_txpower(CC2420_TXPOWER_MAX);
/* Remember the current transmission power */
txpower = cc2420_get_txpower();
/* Set the specified transmission power */
set_txpower(packetbuf_attr(PACKETBUF_ATTR_RADIO_TXPOWER) - 1);
}
PRINTF("cc2420: sending %d bytes\n", payload_len);
@ -412,6 +423,11 @@ cc2420_send(const void *payload, unsigned short payload_len)
off();
}
if(packetbuf_attr(PACKETBUF_ATTR_RADIO_TXPOWER) > 0) {
/* Restore the transmission power */
set_txpower(txpower & 0xff);
}
RELEASE_LOCK();
return 0;
}
@ -421,6 +437,12 @@ cc2420_send(const void *payload, unsigned short payload_len)
transmitted because of other channel activity. */
RIMESTATS_ADD(contentiondrop);
PRINTF("cc2420: do_send() transmission never started\n");
if(packetbuf_attr(PACKETBUF_ATTR_RADIO_TXPOWER) > 0) {
/* Restore the transmission power */
set_txpower(txpower & 0xff);
}
RELEASE_LOCK();
return -3; /* Transmission never started! */
}
@ -707,12 +729,8 @@ cc2420_read(void *buf, unsigned short bufsize)
void
cc2420_set_txpower(uint8_t power)
{
uint16_t reg;
GET_LOCK();
reg = getreg(CC2420_TXCTRL);
reg = (reg & 0xffe0) | (power & 0x1f);
setreg(CC2420_TXCTRL, reg);
set_txpower(power);
RELEASE_LOCK();
}
/*---------------------------------------------------------------------------*/