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[Pager] Fixed inversion logic (#641)

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This commit is contained in:
jgromes 2022-12-22 16:19:10 +01:00
parent 81c5504260
commit 607ae1035c
1 changed files with 13 additions and 3 deletions
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16
src/protocols/Pager/Pager.cpp
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@ -235,11 +235,16 @@ int16_t PagerClient::startReceive(RADIOLIB_PIN_TYPE pin, uint32_t addr, uint32_t
// now set up the direct mode reception
Module* mod = _phy->getMod();
mod->pinMode(pin, INPUT);
if(inv) {
// set direct sync word to the frame sync word
// the logic here is inverted, because modules like SX1278
// assume high frequency to be logic 1, which is opposite to POCSAG
if(!inv) {
_phy->setDirectSyncWord(~RADIOLIB_PAGER_FRAME_SYNC_CODE_WORD, 32);
} else {
_phy->setDirectSyncWord(RADIOLIB_PAGER_FRAME_SYNC_CODE_WORD, 32);
}
_phy->setDirectAction(PagerClientReadBit);
_phy->receiveDirect();
@ -449,7 +454,7 @@ void PagerClient::write(uint32_t codeWord) {
}
// finally, check if inversion is enabled
if(!inv) {
if(inv) {
change = -change;
}
@ -474,10 +479,15 @@ uint32_t PagerClient::read() {
codeWord |= (uint32_t)_phy->read();
// check if we need to invert bits
if(inv) {
// the logic here is inverted, because modules like SX1278
// assume high frequency to be logic 1, which is opposite to POCSAG
if(!inv) {
codeWord = ~codeWord;
}
RADIOLIB_VERBOSE_PRINT("R\t");
RADIOLIB_VERBOSE_PRINTLN(codeWord, HEX);
// TODO BCH error correction here
return(codeWord);
}