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manuelbl / ttn-esp32

The Things Network device library for ESP32 (ESP-IDF) and SX127x based devices
MIT License
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ttn_hal LMIC failed and stopped error on ESP32S3 with RFM95W #69

Closed Gaurang-1402 closed 11 months ago

Gaurang-1402 commented 12 months ago

Hi, I am using a XIAO Sense ESP32S3 board with a RFM95W lora module. On running the hello_world example, I get the following error

I (346) ttn_prov: DevEUI, AppEUI/JoinEUI and AppKey saved in NVS storage
Joining...
I (346) gpio: GPIO[0]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 
I (356) gpio: GPIO[1]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 
I (366) gpio: GPIO[3]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 0| Pulldown: 1| Intr:1 
I (376) gpio: GPIO[4]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 0| Pulldown: 1| Intr:1 
I (386) ttn_hal: IO initialized
I (386) ttn_hal: SPI initialized
I (386) ttn_hal: Timer initialized
E (396) ttn_hal: LMIC failed and stopped: /home/esp/Desktop/examples/components/ttn-esp32/src/lmic/radio.c:1166

I am running the following pin configuration

// Pins and other resources
#define TTN_SPI_HOST      SPI2_HOST
#define TTN_SPI_DMA_CHAN  SPI_DMA_DISABLED
#define TTN_PIN_SPI_SCLK  7
#define TTN_PIN_SPI_MOSI  9
#define TTN_PIN_SPI_MISO  8
#define TTN_PIN_NSS       0
#define TTN_PIN_RXTX      TTN_NOT_CONNECTED
#define TTN_PIN_RST       1
#define TTN_PIN_DIO0      4
#define TTN_PIN_DIO1      3

I am pretty confident the pin configuration is not an issue because I used the same pinconfig for P2P lora communication with another library and it worked successfully.

I have also set my menuconfig according to your guidance here

I scanned similar issues #67 and #49 and used the latest version of ttn-esp32 from branch master but it doesn't fix my problem. I tried hello_world_in_c also as an example but it gave me the same error.

My esp-idf is v4.4

I'd greatly appreciate your help!

manuelbl commented 12 months ago

This error indicates that the SPI communication between the ESP32 and the RFM95W is not working correctly.

In the XIAO Sense ESP32S3 documentation, I don't see where the GPIO0 would be available. So the following line is suspicious:

#define TTN_PIN_NSS       0
Gaurang-1402 commented 11 months ago

Gosh such a silly mistake. I was looking at digital pin numbers instead of GPIOs. You were correct about my mistake. Thank you so much for this library and pointing out this mistake - highly appreciate it!