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esp32_loraprs
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@ -53,7 +53,8 @@ Install via libraries:
- cppQueue library: https://github.com/SMFSW/Queue - cppQueue library: https://github.com/SMFSW/Queue
# Software Setup # Software Setup
- **NB! select next partition scheme for esp32 in Arduino IDE Tools menu:** "Minimal SPIFFS (1.9 MB APP with OTA/190 KB SPIFFS)" - **nb! select next partition scheme for esp32 in Arduino IDE Tools menu:** "Minimal SPIFFS (1.9 MB APP with OTA/190 KB SPIFFS)"
- **use 80 MHz ESP32 frequency** in Arduino SDK, it will prolong battery life when operating portable, higher CPU speed is not required, there are no CPU intensive operations
- when setting up APRSDroid, use **"TNC (KISS)"** connection protocol in Connection Preferences -> Connection Protocol - when setting up APRSDroid, use **"TNC (KISS)"** connection protocol in Connection Preferences -> Connection Protocol
- go to esp32_loraprs.ino and make next changes based on your requirements in `initializeConfig()` - go to esp32_loraprs.ino and make next changes based on your requirements in `initializeConfig()`
- set `cfg.IsClientMode` to `false` if you are planning to run server mode for APRS-IS iGate / Digipeater - set `cfg.IsClientMode` to `false` if you are planning to run server mode for APRS-IS iGate / Digipeater
@ -72,7 +73,6 @@ Install via libraries:
- lora output power `cfg.LoraPower`, 20 (max 20 dBm ~ 100mW, change to lower value if needed) - lora output power `cfg.LoraPower`, 20 (max 20 dBm ~ 100mW, change to lower value if needed)
- sync word `cfg.LoraSync`, 0x34 - sync word `cfg.LoraSync`, 0x34
- consider minimum decode level based on on BW + SF and required throughput ![alt text](images/bandwidth_vs_sf.jpg) - consider minimum decode level based on on BW + SF and required throughput ![alt text](images/bandwidth_vs_sf.jpg)
- use 80 MHz ESP32 frequency in Arduino SDK, it will prolong battery life when operating portable, higher CPU speed is not required, there are no CPU intensive operations
- uses LoRa **built-in checksum** calculation to drop broken packets - uses LoRa **built-in checksum** calculation to drop broken packets
- note, that there a is **significant frequency drift** on temperature changes for different modules - note, that there a is **significant frequency drift** on temperature changes for different modules
- you need to use **external TCXO** if you are planning to use modules for narrow bandwidths less than 125 kHz - you need to use **external TCXO** if you are planning to use modules for narrow bandwidths less than 125 kHz