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avoid switching mode when tx or rx is active.

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based on suggestions from Frederik Hermans and some code from Jesper Karlsson.
This commit is contained in:
nvt-se 2009-03-30 14:07:34 +00:00
parent 13b6fe2cd5
commit e90149b7b4
1 changed files with 12 additions and 0 deletions
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12
platform/msb430/dev/cc1020.c
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@ -62,6 +62,8 @@
#define PRINTF(...)
#endif
#define SEND_TIMEOUT 10
static int cc1020_calibrate(void);
static int cc1020_setupTX(int);
static int cc1020_setupRX(int);
@ -122,6 +124,7 @@ reset_receiver(void)
cc1020_off();
} else {
CC1020_SET_OPSTATE(CC1020_RX | CC1020_RX_SEARCHING);
cc1020_set_rx();
ENABLE_RX_IRQ();
}
}
@ -233,6 +236,15 @@ cc1020_send(const void *buf, unsigned short len)
int normal_header = HDRSIZE + len;
int i;
uint16_t rxcrc = 0xFFFF; /* For checksum purposes */
rtimer_clock_t timeout_time;
timeout_time = RTIMER_NOW() + RTIMER_SECOND / 1000 * SEND_TIMEOUT;
while(cc1020_state & CC1020_RX_RECEIVING) {
if(RTIMER_CLOCK_LT(timeout_time, RTIMER_NOW())) {
PRINTF("cc1020: transmission blocked by reception in progress\n");
return -3;
}
}
if(cc1020_state == CC1020_OFF) {
return -2;