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Posted to commits@mynewt.apache.org by GitBox <gi...@apache.org> on 2020/08/16 18:27:43 UTC

[GitHub] [mynewt-core] danielkucera opened a new issue #2354: LoRa with RFM95

danielkucera opened a new issue #2354:
URL: https://github.com/apache/mynewt-core/issues/2354


   Hello,
   
   I'm unable to join with RFM95 radio module. I defined my own BSP, tried both sx1276 and sx1272 drivers but without luck. The result is always the following:
   ```
   400851 Attempting to join...
   compat> Join cb. status=7 attempts=1
   ```
   The same hardware works with mbed framework. 
   The signal seems to be very week in comparison with mbed, See attached gqrx screenshots:
   mynewt sx1272:
   ![Screenshot from 2020-08-16 20-10-16](https://user-images.githubusercontent.com/1734256/90341295-b2a3fc00-dffe-11ea-8138-7fc0e746c48e.png)
   
   mynewt sx1276:
   ![Screenshot from 2020-08-16 20-18-03](https://user-images.githubusercontent.com/1734256/90341302-c0f21800-dffe-11ea-9a35-7d0e97cbb5fd.png)
   
   mbed:
   ![Screenshot from 2020-08-16 20-20-20](https://user-images.githubusercontent.com/1734256/90341303-c6e7f900-dffe-11ea-8a67-0c2d6215de88.png)
   
   
   


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[GitHub] [mynewt-core] danielkucera commented on issue #2354: LoRa with RFM95

Posted by GitBox <gi...@apache.org>.

danielkucera commented on issue #2354:
URL: https://github.com/apache/mynewt-core/issues/2354#issuecomment-775518981


   Ok, the last missing value to correctly connect to TTN was:
   ```
       LORA_NODE_PUBLIC_NWK: 1
   ```
   so the final config is:
   ```
       SPI_0_MASTER: 1
       SPI_0_MASTER_PIN_SCK: 30
       SPI_0_MASTER_PIN_MOSI: 2
       SPI_0_MASTER_PIN_MISO: 3
   
       # repos/apache-mynewt-core/net/lora/node/include/node/lora_band.h
       LORA_NODE: 1
       LORA_NODE_REGION: 6
       LORA_MAC_TIMER_NUM: 0
       LORA_NODE_PUBLIC_NWK: 1
   
       # lora pins
       #SX1276
       SX1276_SPI_IDX: 0
       SX1276_SPI_CS_PIN: 29 # NSS?
       SX1276_HF_USE_PA_BOOST: 1
   ```
   and pins in `bsp.h`:
   ```
   #define SX1276_DIO0         (31)
   #define SX1276_DIO1         (4)
   #define SX1276_DIO2         (5)
   #define SX1276_DIO3         (26)
   #define SX1276_DIO4         (28)
   #define SX1276_DIO5         (25)
   #define SX1276_NRESET       (27)
   ```
   But I have to say that the documentation is very poor. :-1: 


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[GitHub] [mynewt-core] danielkucera commented on issue #2354: LoRa with RFM95

Posted by GitBox <gi...@apache.org>.

danielkucera commented on issue #2354:
URL: https://github.com/apache/mynewt-core/issues/2354#issuecomment-775482914


   I managed to fix the signal strength issue with:
   ```
   SX1276_HF_USE_PA_BOOST: 1
   ```
   ![Screenshot from 2021-02-08 22-31-05](https://user-images.githubusercontent.com/1734256/107284954-c6d12f00-6a5e-11eb-8436-c3ec8f75a923.png)
   
   But it is still not registering using `las_join 1`. I don't see any RX packets in my gateway. I'll keep investigating.


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