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at86rf2xx: correct rssi

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AT86RF231 MAN. p.89 8.3.2 Reading RSSI
AT86RF232 MAN. p.88 8.3.2 Reading RSSI
AT86RF233 MAN. p.99 8.4.2 Reading RSSI

"It is not recommended reading the RSSI value when using the Extended  Operating Modes, use ED instead"
This commit is contained in:
Josarn 2018-07-06 14:15:44 +02:00
parent 38a292add9
commit 4482c9851a
1 changed files with 25 additions and 4 deletions
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29
drivers/at86rf2xx/at86rf2xx_netdev.c
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@ -166,18 +166,39 @@ static int _recv(netdev_t *netdev, void *buf, size_t len, void *info)
at86rf2xx_fb_read(dev, tmp, 2); at86rf2xx_fb_read(dev, tmp, 2);
(void)tmp; (void)tmp;
/* at86rf212 RSSI_BASE_VAL +3.1*RSSI, base varies for diff. modulation and datarates
* at86RF232 RSSI_BASE_VAL +3.0*RSSI, base -91dBm
* at86RF233 RSSI_BASE_VAL +3.0*RSSI, base -94dBm
* at86RF231 RSSI_BASE_VAL +3.0*(RSSI-1), base -91dBm
* at***RFR2 RSSI_BASE_VAL +3.0*(RSSI-1), base -90dBm
*
* AT86RF231 MAN. p.89 8.3.2 Reading RSSI
* AT86RF232 MAN. p.88 8.3.2 Reading RSSI
* AT86RF233 MAN. p.99 8.4.2 Reading RSSI
* "It is not recommended reading the RSSI value when using the Extended
* Operating Modes, use ED instead"
* at86RF231 RSSI_BASE_VAL +ED, base -90dBm
* at86RF232 RSSI_BASE_VAL +ED, base -91dBm
* at86RF233 RSSI_BASE_VAL +ED, base -94dBm
* at***RFR2 RSSI_BASE_VAL +ED, base -90dBm
*/
if (info != NULL) { if (info != NULL) {
uint8_t rssi = 0; uint8_t rssi = 0;
netdev_ieee802154_rx_info_t *radio_info = info; netdev_ieee802154_rx_info_t *radio_info = info;
#if defined(MODULE_AT86RF231) || defined(MODULE_AT86RF232) || defined(MODULE_AT86RF233)
at86rf2xx_fb_read(dev, &(radio_info->lqi), 1); at86rf2xx_fb_read(dev, &(radio_info->lqi), 1);
#ifndef MODULE_AT86RF231
at86rf2xx_fb_read(dev, &(rssi), 1);
at86rf2xx_fb_stop(dev);
#else
at86rf2xx_fb_stop(dev); at86rf2xx_fb_stop(dev);
rssi = at86rf2xx_reg_read(dev, AT86RF2XX_REG__PHY_ED_LEVEL); rssi = at86rf2xx_reg_read(dev, AT86RF2XX_REG__PHY_ED_LEVEL);
#else
at86rf2xx_fb_read(dev, &(radio_info->lqi), 1);
at86rf2xx_fb_read(dev, &(rssi), 1);
at86rf2xx_fb_stop(dev);
rssi = 3 * rssi;
#endif #endif
radio_info->rssi = RSSI_BASE_VAL + rssi; radio_info->rssi = RSSI_BASE_VAL + rssi;
DEBUG("[at86rf2xx] LQI:%d high is good, RSSI:%d high is either good or"
"too much interference.\n", radio_info->lqi, radio_info->rssi);
} }
else { else {
at86rf2xx_fb_stop(dev); at86rf2xx_fb_stop(dev);