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[CC1101] Solved enableSyncWordFiltering() ambiguity.

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This commit is contained in:
Andrea Guglielmini 2019-12-15 23:58:24 +01:00
parent 56cdbbdd7b
commit e1d8380c4e
1 changed files with 9 additions and 24 deletions
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33
src/modules/CC1101/CC1101.cpp
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@ -585,31 +585,16 @@ int16_t CC1101::variablePacketLengthMode(uint8_t maxLen) {
}
int16_t CC1101::enableSyncWordFiltering(uint8_t maxErrBits) {
if (maxErrBits > 1 || (_syncWordLength != 2 && _syncWordLength != 4)) {
return (ERR_INVALID_SYNC_WORD);
switch (maxErrBits){
case 0:
// in 16 bit sync word, expect all 16 bits.
return (SPIsetRegValue(CC1101_REG_MDMCFG2, CC1101_SYNC_MODE_16_16, 2, 0));
case 1:
// in 16 bit sync word, expect at least 15 bits.
return (SPIsetRegValue(CC1101_REG_MDMCFG2, CC1101_SYNC_MODE_15_16, 2, 0));
default:
return (ERR_INVALID_SYNC_WORD);
}
if (maxErrBits == 0) {
if (_syncWordLength == 2) {
// in 16 bit sync word, expect all 16 bits
return(SPIsetRegValue(CC1101_REG_MDMCFG2, CC1101_SYNC_MODE_16_16, 2, 0));
} else {
// there's no 32 of 32 case, so we resort to 30 of 32 bits required
return(SPIsetRegValue(CC1101_REG_MDMCFG2, CC1101_SYNC_MODE_30_32, 2, 0));
}
}
if (maxErrBits == 1) {
if (_syncWordLength == 2) {
// in 16 bit sync word, expect at least 15 bits
return(SPIsetRegValue(CC1101_REG_MDMCFG2, CC1101_SYNC_MODE_15_16, 2, 0));
} else {
// in 32 bits sync word (16 + 16), expect 30 of 32 to match
return(SPIsetRegValue(CC1101_REG_MDMCFG2, CC1101_SYNC_MODE_30_32, 2, 0));
}
}
return(ERR_UNKNOWN);
}
int16_t CC1101::disableSyncWordFiltering() {