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Fix setPowerLevel

This commit is contained in:
LowPowerLab 2015-04-01 16:26:47 -04:00
parent c01ae0bf4e
commit 5502c186db
1 changed files with 9 additions and 3 deletions
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12
RFM69.cpp
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@ -183,12 +183,18 @@ void RFM69::setNetwork(uint8_t networkID)
writeReg(REG_SYNCVALUE2, networkID);
}
// set output power: 0 = min, 31 = max
// set *transmit/TX* output power: 0=min, 31=max
// this results in a "weaker" transmitted signal, and directly results in a lower RSSI at the receiver
// the power configurations are explained in the SX1231H datasheet (Table 10 on p21; RegPaLevel p66): http://www.semtech.com/images/datasheet/sx1231h.pdf
// valid powerLevel parameter values are 0-31 and result in a directly proportional effect on the output/transmission power
// this function implements 2 modes as follows:
// - for RFM69W the range is from 0-31 [-18dBm to 13dBm] (PA0 only on RFIO pin)
// - for RFM69HW the range is from 0-31 [5dBm to 20dBm] (PA1 & PA2 on PA_BOOST pin & high Power PA settings - see section 3.3.7 in datasheet, p22)
void RFM69::setPowerLevel(uint8_t powerLevel)
{
_powerLevel = powerLevel;
writeReg(REG_PALEVEL, (readReg(REG_PALEVEL) & 0xE0) | (_powerLevel > 31 ? 31 : _powerLevel));
_powerLevel = (powerLevel > 31 ? 31 : powerLevel);
if (_isRFM69HW) _powerLevel /= 2;
writeReg(REG_PALEVEL, (readReg(REG_PALEVEL) & 0xE0) | _powerLevel);
}
bool RFM69::canSend()