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cpu/cc2538/radio/cc2538_rf_radio_ops: fix rssi reporting

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Francisco Molina 2020-12-11 13:56:15 +01:00
parent 4736a881fc
commit f8bc934785
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GPG Key ID: 3E94EAC3DBDEEDA8
1 changed files with 7 additions and 2 deletions
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9
cpu/cc2538/radio/cc2538_rf_radio_ops.c
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@ -185,10 +185,15 @@ static int _read(ieee802154_dev_t *dev, void *buf, size_t size, ieee802154_rx_in
/* The number of dB above maximum sensitivity detected for the
* received packet */
info->rssi = -CC2538_RSSI_OFFSET + rssi_val + IEEE802154_RADIO_RSSI_OFFSET;
/* Make sure there is no overflow even if no signal with such
low sensitivity should be detected */
const int hw_rssi_min = IEEE802154_RADIO_RSSI_OFFSET -
CC2538_RSSI_OFFSET;
int8_t hw_rssi = rssi_val > hw_rssi_min ?
(CC2538_RSSI_OFFSET + rssi_val) : IEEE802154_RADIO_RSSI_OFFSET;
info->rssi = hw_rssi - IEEE802154_RADIO_RSSI_OFFSET;
corr_val = rfcore_read_byte() & CC2538_CORR_VAL_MASK;
if (corr_val < CC2538_CORR_VAL_MIN) {
corr_val = CC2538_CORR_VAL_MIN;
}