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Atmel radio; Support for RADIO_PARAM_CCA_THRESHOLD added

contiki
Robert Olsson 2017-05-05 12:55:03 +02:00
parent ddf723f88d
commit c2560498b6
1 changed files with 31 additions and 2 deletions
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33
cpu/avr/radio/rf230bb/rf230bb.c
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@ -357,6 +357,35 @@ rf230_set_short_addr(uint16_t addr)
hal_register_write(RG_SHORT_ADDR_1, (addr >> 8));
}
#define RSSI_BASE_VAL (-90)
/* Returns the current CCA threshold in dBm */
static radio_value_t
rf230_get_cca_threshold()
{
radio_value_t cca_thresh = 0;
cca_thresh = hal_subregister_read(SR_CCA_ED_THRES);
cca_thresh = RSSI_BASE_VAL + 2 * cca_thresh;
return cca_thresh;
}
/* Sets the CCA threshold in dBm */
static radio_value_t
rf230_set_cca_threshold(radio_value_t cca_thresh)
{
if(cca_thresh > -60) /* RSSI_BASE_VAL - 2 * 0xF */
cca_thresh = -60;
cca_thresh = (RSSI_BASE_VAL - cca_thresh)/2;
if(cca_thresh < 0)
cca_thresh = - cca_thresh;
hal_subregister_write(SR_CCA_ED_THRES, cca_thresh);
return cca_thresh;
}
/*---------------------------------------------------------------------------*/
static radio_result_t
get_value(radio_param_t param, radio_value_t *value)
@ -399,7 +428,7 @@ get_value(radio_param_t param, radio_value_t *value)
*value = rf230_get_txpower();
return RADIO_RESULT_OK;
case RADIO_PARAM_CCA_THRESHOLD:
/* *value = get_cca_threshold(); */
*value = rf230_get_cca_threshold();
return RADIO_RESULT_OK;
case RADIO_PARAM_RSSI:
*value = rf230_get_raw_rssi();
@ -475,7 +504,7 @@ set_value(radio_param_t param, radio_value_t value)
return RADIO_RESULT_OK;
case RADIO_PARAM_CCA_THRESHOLD:
/* set_cca_threshold(value); */
rf230_set_cca_threshold(value);
return RADIO_RESULT_OK;
default:
return RADIO_RESULT_NOT_SUPPORTED;