LoRa
来自Jack's Lab
（版本间的差异）
(→Schematics) |
(→TX) |
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| 第30行： | 第30行： | ||
LoRa TX data FIFO filling: | LoRa TX data FIFO filling: | ||
| − | * Set | + | * Set Reg_FifoAddrPtr to FifoTxBaseAddr |
* Write PayloadLenght bytes to the FIFO (RegFifo) | * Write PayloadLenght bytes to the FIFO (RegFifo) | ||
2017年10月11日 (三) 14:59的版本
目录 |
1 Key Concepts
1.1 Spreading Factor
1.2 Coding Rate
1.3 Signal Bandwidth
2 TX
- Static configuration registers can only be accessed in Sleep, Standby or FSTX mode
- The LoRa FIFO can only be filled in Standby mode
- Data TX is initiated by sending TX mode request
- Upon completion the TxDone interrupt is issued and the radio returns to Standby mode
- Following transmission the radio can be manually placed in Sleep mode or the FIFO refilled for subsequent TX operation
LoRa TX data FIFO filling:
- Set Reg_FifoAddrPtr to FifoTxBaseAddr
- Write PayloadLenght bytes to the FIFO (RegFifo)
3 Schematics
http://modtronix.com/prod/imod/inair4/inair4_r1_sch.pdf
4 Chip
4.1 SX1278
- http://www.semtech.com/wireless-rf/rf-transceivers/sx1278/
- http://www.semtech.com/images/datasheet/LoraLowEnergyDesign_STD.pdf
- http://www.semtech.com/images/datasheet/LoraDesignGuide_STD.pdf
- http://www.semtech.com/images/datasheet/AN1200.19_SX127x_RefDesign_STD.pdf
- http://www.semtech.com/images/datasheet/an120014-xo-guidance-lora-modulation.pdf
5 Reference
- http://www.semtech.com/wireless-rf/rf-transceivers/
- http://cpham.perso.univ-pau.fr/LORA/RPIgateway.html
