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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. 

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
View File

@ -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();
}
/*---------------------------------------------------------------------------*/