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Merge pull request #2279 from meshtastic/preamble-halving

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Preamble change
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Ben Meadors 2023-02-16 20:42:05 -06:00 committed by GitHub
commit c39645419a
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2 changed files with 2 additions and 9 deletions
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9
src/mesh/RF95Interface.cpp
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@ -67,19 +67,12 @@ bool RF95Interface::init()
#endif
setTransmitEnable(false);
int res = lora->begin(getFreq(), bw, sf, cr, syncWord, power, currentLimit, preambleLength);
int res = lora->begin(getFreq(), bw, sf, cr, syncWord, power, preambleLength);
LOG_INFO("RF95 init result %d\n", res);
LOG_INFO("Frequency set to %f\n", getFreq());
LOG_INFO("Bandwidth set to %f\n", bw);
LOG_INFO("Power output set to %d\n", power);
// current limit was removed from module' ctor
// override default value (60 mA)
res = lora->setCurrentLimit(currentLimit);
LOG_DEBUG("Current limit set to %f\n", currentLimit);
LOG_DEBUG("Current limit set result %d\n", res);
if (res == RADIOLIB_ERR_NONE)
res = lora->setCRC(RADIOLIB_SX126X_LORA_CRC_ON);

2
src/mesh/RadioInterface.h
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@ -63,7 +63,7 @@ class RadioInterface
- Tx/Rx turnaround time (maximum of SX126x and SX127x);
- MAC processing time (measured on T-beam) */
uint32_t slotTimeMsec = 8.5 * pow(2, sf) / bw + 0.2 + 0.4 + 7;
uint16_t preambleLength = 32; // 8 is default, but we use longer to increase the amount of sleep time when receiving
uint16_t preambleLength = 16; // 8 is default, but we use longer to increase the amount of sleep time when receiving
const uint32_t PROCESSING_TIME_MSEC =
4500; // time to construct, process and construct a packet again (empirically determined)
const uint8_t CWmin = 2; // minimum CWsize