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Lora-net / lora_gateway

Driver/HAL to build a gateway using a concentrator board based on Semtech SX1301 multi-channel modem and SX1257/SX1255 RF transceivers.
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Where can i get the Schematic diagram of SX125x+SX1301 demo board ? #68

Closed szhansen closed 7 years ago

szhansen commented 7 years ago

anybody could tell me ?

how can i get the demo board or the Schematic diagram ?

Thank you so much...

nestorayuso commented 7 years ago

the reference design is under NDA from semtech, but you cand find schematic at http://ww1.microchip.com/downloads/en/DeviceDoc/40001827A.pdf or you can look at the pico gateway reference design, it is almost the same adding a STM32 MCU http://www.semtech.com/apps/filedown/down.php?file=sx1308p868gw_picocell_gtw_e381v02b_eu_folder.zip

szhansen commented 7 years ago

@nestorayuso thank you so much. I noticed that the pico gateway use SX1308 not SX1301, there is some question about this:

  1. what's the difference between SX1308 and SX1301 ?
  2. what's the function of STM32 ? I think that in SX1301 GW, we can access SX1301 by SPI bus directly from such as raspberry pi ? but how about SX1308 ? Raspberyy pi SPI ---> STM32 SPI ---> SX1308 SPI ?

Thanks again for your help ,I am the fresh ...

nestorayuso commented 7 years ago

  1. both are basically the same, only changes in operational temperature range and power requirements.

  2. in gateway reference design, both software modules lora-gateway and packet_forwarder run on linux platform (raspberry-pi for example), and a low-latency/high speed SPI is needed (USB was avoided). in pico-gateway reference design, the lora-gateway software module runs on a STM32 and packet_forwarder run on linux platform (raspberry-pi for example), in this case, low-latency/high speed SPI is used between SX130x and STM32, and UART/USB CDC between STM32 and raspberry-pi because latency is not critical now.

szhansen commented 7 years ago

@nestorayuso thank you so much~~~ It seems that pico-gw have better performance than SX1301.

szhansen commented 7 years ago

@nestorayuso the packet_forwarder need server, if i just install the server on my raspberry-pi for test, which server software can i use ?

thank you.

szhansen commented 7 years ago

@nestorayuso I have review the picoGW-mcu code, and find the mcu can use UART or USB to connect with RPi: `#ifdef USE_UART CMDMANAGER::CMDMANAGER(PinName Tx, PinName Rx) { kill = false; ActiveInterface = (INTERFACE *) new COMUART (Tx, Rx); ActiveCom = ISUARTINTERFACE; }

else

CMDMANAGER::CMDMANAGER(PinName Tx, PinName Rx) { kill = false; ActiveInterface = (INTERFACE *) new COMUSB (); ActiveCom = ISUSBINTERFACE; }

endif`

But in the code of picoGW_packet_forwarder, only UART (/dev/ttyACM0) can be used,no USB, Why ??? #define COM_PATH_DEFAULT "/dev/ttyACM0"

mcoracin commented 7 years ago

If the picoGW_mcu is compiled in USB mode, when inserted on the USB port it will be mounted on /dev/ttyACM0 on the RPi. Even though it is USB, it is a serial device.

Anyway, you can indicate to the packet forwarder which device to be used with -d option. Use dmesg to get the device asssociated to the picoGW.

DxrMorgan commented 6 years ago

the reference design is under NDA from semtech, but you cand find schematic at http://ww1.microchip.com/downloads/en/DeviceDoc/40001827A.pdf or you can look at the pico gateway reference design, it is almost the same adding a STM32 MCU http://www.semtech.com/apps/filedown/down.php?file=sx1308p868gw_picocell_gtw_e381v02b_eu_folder.zip

Link broken. Anybody, can send me?

nestorayuso commented 6 years ago

https://www.semtech.com/products/wireless-rf/lora-gateways/SX1308