sandeepmistry / sandeepmistry

👋🏽 Hi there, I'm Sandeep 👨🏽‍💻

👨🏽‍🔬 Personal Projects

Current

• Arduino Libraries: 📡 LoRa | ⚙️ nRF5 | 🥫 CAN | 🚘 OBD2 |

Past

• Node.js
  • BLE: 🔵 noble | 🔵 bleno | 🔵 bluetooth-hci-socket | 🔵 noble-device | 🟥 sensortag | 🏮bleacon | 🌸 flower-power |
  • Johnny-Five IO Plugins: 🤖 chip-io | 🤖 bbc-microbit-io |
  • Other: 📷raspberry-pi-camera-native | 🚨 node-blink1 | 📡sx127x | 🎛node-powermate |
• Arduino Libraries: 🔵 BLE Peripheral
• JavaScript Libraries: 📡 rtlsdr.js

👨🏽‍🔧 Past work for @arduino

• 📚 Libraries: 🧠 Arduino_KNN | 🔵 ArduinoBLE | 📷 Arduino_OV767X | 🤖 ArduinoMqttClient | 🐻 ArduinoBearSSL | 🔐 ArduinoECCX08 | 📄 Arduino_JSON | 👤 Arduino_OAuth | 🚌 ArduinoModbus | 📡 WiFiNINA | 📍 Arduino_MKRGPS | 🚀 MKRIMU | 📡 WiFi101 | 🥣 ArduinoRS485 | 🚨 Arduino_MKRRGB | 📱 MKRGSM | 🚀 Arduino_LSM9DS1 | 📡 MKRNB | 🚀 Arduino_LSM6DS3 | 📊 ArduinoGraphics | 🔈 ArduinoSound | 🌡 Arduino_MKRENV | 🚨 ArduinoDMX |
• ⚙️ Cores / Firmware: ⬛️ SAMD | 📡 nina-fw |
• 💭 Tutorials / Examples: 🧠 TensorFlow Lite Tutorials | 👊🏽💪🏽Arm AIoT Dev Summit Workshop | ☁️ Cloud Provider Examples |

sandeepmistry's Issues

LoRa library - Receiver stopping at random times

Hi,

I am sure you get lots of questions about various contributions you have made but I hope you will have time to help me :)
Using the Lora lib on an ESP32 Wroom 32U, VS Code/Platform IO, own HW. Lora board is RFM95W.
It was painless to get the library running and everything seemed to work perfectly. I am using LORA in remote control application where the remote control is the Master and the Motorboard acts as a slave.
Half duplex communication.
Transmitting works flawlessly.
Receiving works flawlessly for a while. Then it suddenly stops and it looks like the RFM95W modules has fallen asleep or died. I have a LED connected via transistor to DIO1. When the receiver works that LED blinks happily.
The DIO0 is connected to my ESP.
When looking at the signals (Oscilloscope) on this line I would normally see a short hi-level when the board receives a package. I am polling the receiver - not using interrupts on this.
However - when the board stops receiving that signal is no longer there.
But plenty of activity on the chips select line.
I have successfully had 50k+ transmissions with a miss rate of less than 0.5 %. Both the transmitting board and the receiving board is a few feet apart on my lab. I have tested range a bit and 4 km+ is easy.
I seem to be unable to figure out why the receiver keeps stopping. I understand that I am not alone -judging from Google - but I cant find a solution.
In order to isolate the problem - is there a way to check if the receiver is Ok ?
I have tried to read out the RSSI when receiver is not working and that goes fine. But it doesn't give me any error message :)
If the module transmits something I have a feeling that the problem occurs more seldom. But when Motorboard is waiting for a command the receiver just stops at one unpredictable point.
Is there anything I can do in the sw to check if receiver works and maybe reset it ?
Or do you have any ideas on how I should approach this ?
Best regards,
Per Inge Kvindesland