giomba/nes-proj
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Make it possible to set and get the CC2420's CCA threshold through the extended radio API.

Browse Source
This commit is contained in:
Nicolas Tsiftes 2015-02-19 11:26:43 +01:00
parent 5e25ca9bf5
commit a785405b36
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
dev/cc2420/cc2420.c
View File

@ -152,6 +152,7 @@ static int cc2420_send(const void *data, unsigned short len);
static int cc2420_receiving_packet(void); static int cc2420_receiving_packet(void);
static int pending_packet(void); static int pending_packet(void);
static int get_cca_threshold(void);
static int cc2420_cca(void); static int cc2420_cca(void);
signed char cc2420_last_rssi; signed char cc2420_last_rssi;
@ -186,6 +187,9 @@ get_value(radio_param_t param, radio_value_t *value)
} }
} }
return RADIO_RESULT_OK; return RADIO_RESULT_OK;
case RADIO_PARAM_CCA_THRESHOLD:
*value = get_cca_threshold() + RSSI_OFFSET;
return RADIO_RESULT_OK;
case RADIO_PARAM_RSSI: case RADIO_PARAM_RSSI:
/* Return the RSSI value in dBm */ /* Return the RSSI value in dBm */
*value = cc2420_rssi(); *value = cc2420_rssi();
@ -241,6 +245,9 @@ set_value(radio_param_t param, radio_value_t value)
} }
cc2420_set_txpower(output_power[i - 1].config); cc2420_set_txpower(output_power[i - 1].config);
return RADIO_RESULT_OK; return RADIO_RESULT_OK;
case RADIO_PARAM_CCA_THRESHOLD:
cc2420_set_cca_threshold(value - RSSI_OFFSET);
return RADIO_RESULT_OK;
default: default:
return RADIO_RESULT_NOT_SUPPORTED; return RADIO_RESULT_NOT_SUPPORTED;
} }
@ -1033,6 +1040,17 @@ pending_packet(void)
return CC2420_FIFOP_IS_1; return CC2420_FIFOP_IS_1;
} }
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
static int
get_cca_threshold(void)
{
int value;
GET_LOCK();
value = (int8_t)(getreg(CC2420_RSSI) >> 8);
RELEASE_LOCK();
return value;
}
/*---------------------------------------------------------------------------*/
void void
cc2420_set_cca_threshold(int value) cc2420_set_cca_threshold(int value)
{ {