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[CC1101] Fixed RSSI/LQI always returning incorrect values (#504)

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This commit is contained in:
jgromes 2022-04-02 19:20:28 +02:00
parent 84dc43d1e1
commit 3a55ad92e1
1 changed files with 8 additions and 10 deletions
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18
src/modules/CC1101/CC1101.cpp
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@ -375,12 +375,6 @@ int16_t CC1101::readData(uint8_t* data, size_t len) {
RADIOLIB_DEBUG_PRINTLN(F("No data for more than 5mS. Stop here."));
break;
} else {
/*
* Does this work for all rates? If 1 ms is longer than the 1ms delay
* then the entire FIFO will be transmitted during that delay.
*
* TODO: drop this delay(1) or come up with a better solution:
*/
delay(1);
bytesInFIFO = SPIgetRegValue(RADIOLIB_CC1101_REG_RXBYTES, 6, 0);
continue;
@ -400,17 +394,21 @@ int16_t CC1101::readData(uint8_t* data, size_t len) {
// check if status bytes are enabled (default: RADIOLIB_CC1101_APPEND_STATUS_ON)
bool isAppendStatus = SPIgetRegValue(RADIOLIB_CC1101_REG_PKTCTRL1, 2, 2) == RADIOLIB_CC1101_APPEND_STATUS_ON;
// for some reason, we need this delay here to get the correct status bytes
delay(3);
// If status byte is enabled at least 2 bytes (2 status bytes + any following packet) will remain in FIFO.
if (bytesInFIFO >= 2 && isAppendStatus) {
if (isAppendStatus) {
// read RSSI byte
_rawRSSI = SPIgetRegValue(RADIOLIB_CC1101_REG_FIFO);
// read LQI and CRC byte
uint8_t val = SPIgetRegValue(RADIOLIB_CC1101_REG_FIFO);
_rawLQI = val & 0x7F;
// read LQI and CRC byte
uint8_t val = SPIgetRegValue(RADIOLIB_CC1101_REG_FIFO);
_rawLQI = val & 0x7F;
// check CRC
if (_crcOn && (val & RADIOLIB_CC1101_CRC_OK) == RADIOLIB_CC1101_CRC_ERROR) {
_packetLengthQueried = false;
return (RADIOLIB_ERR_CRC_MISMATCH);
}
}