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Bugs
Bugs¶
- PA channels
- TX timer overflow
PA channels¶
After carefully compare the schematics between official dev boards from Semtech and RF module manufacturers, we found out:
- Semtech SX1276 use 14dBm RFO_LF/HF as RF output
- SX1278 RF modules usually use 20dBm PA_BOOST pin as RF output
Therefore, if we reuse SX1276Lib, the receiver will get very weak signal around -120dBm, since it has no matching antenna at all.
TX timer overflow¶
If system timer to used to trigger TX mode, the system time must be reset, and keep it running after that reset. Otherwise the system timer will overflow about 30 minutes.