LoRa with RFM95

[danielkucera]

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:

mynewt sx1276:

mbed:

[danielkucera]

I managed to fix the signal strength issue with:

SX1276_HF_USE_PA_BOOST: 1

But it is still not registering using las_join 1. I don't see any RX packets in my gateway. I'll keep investigating.

[danielkucera]

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:

[tcpipchip]

i am having the same ISSUE :( Is working for you ?

[danielkucera]

As I wrote, it is.

[tcpipchip]

i am getting a progresss here... i was using SPI0...and software was on SPI1

[tcpipchip]

are you using wich processor? And do you created the bootloader and app ?