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CCA measurement was always returning busy

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This commit is contained in:
David Kopf 2011-08-06 13:48:52 -04:00
parent b70d2b3163
commit cdcb2c4744
1 changed files with 9 additions and 7 deletions
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16
cpu/avr/radio/rf230bb/rf230bb.c
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@ -566,7 +566,7 @@ set_txpower(uint8_t power)
void
calibrate_rc_osc_32k(void)
{
#if 1
#if 0
/* Calibrate RC Oscillator: The calibration routine is done by clocking TIMER2
* from the external 32kHz crystal while running an internal timer simultaneously.
@ -1473,8 +1473,8 @@ rf230_get_raw_rssi(void)
static int
rf230_cca(void)
{
int cca;
int radio_was_off = 0;
uint8_t cca=0;
uint8_t radio_was_off = 0;
/* If the radio is locked by an underlying thread (because we are
being invoked through an interrupt), we preted that the coast is
@ -1495,16 +1495,18 @@ rf230_cca(void)
//hal_subregister_write(SR_CCA_MODE,1);
/* Start the CCA, wait till done, return result */
/* Note reading the TRX_STATUS register clears both CCA_STATUS and CCA_DONE bits */
hal_subregister_write(SR_CCA_REQUEST,1);
delay_us(TIME_CCA);
//while ((hal_register_read(RG_TRX_STATUS) & 0x80) == 0 ) {continue;}
while (!hal_subregister_read(SR_CCA_DONE)) {continue;}
cca=hal_subregister_read(SR_CCA_STATUS);
while ((cca & 0x80) == 0 ) {
cca=hal_register_read(RG_TRX_STATUS);
}
if(radio_was_off) {
rf230_off();
}
return cca;
if (cca & 0x70) return 1; else return 0;
}
/*---------------------------------------------------------------------------*/
int