From 43ea822860127f953834c2bdf26d1a3f1eb69aed Mon Sep 17 00:00:00 2001 From: sh123 Date: Fri, 12 Jun 2020 17:47:21 +0300 Subject: [PATCH] Update README.md --- README.md | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/README.md b/README.md index 042301d..85836fa 100644 --- a/README.md +++ b/README.md @@ -38,8 +38,13 @@ All work was done on ESP32-WROOM with custom made LoRa shield, if your ESP32 boa - uses LoRa **built-in checksum** calculation to drop broken packets - 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 - - or calibrate clients based on server frequency drift report by changing **LORAPRS_FREQ**, for example, let client and server run for an 30-60 minutes and if server reports err: -1500, then set client frequency to about 1000 kHz less, e.g. instead of 433.775 set it to 433.774, this will give couple of additional dB + - or calibrate clients based on server frequency drift report by changing `cfg.LoraFreq`, for example, let client and server run for an 30-60 minutes and if server reports err: -1500, then set client frequency to about 1000 kHz less, e.g. instead of 433.775 set it to 433.774, this will give couple of additional dB - alternatively automatic calibration could be done on server side by enabling automatic frequency correction by setting `cfg.EnableAutoFreqCorrection` to **true**, might be suitable for experiments where only one client is operating + - other useful options are + - `cfg.EnableSignalReport` set to `true` to enable signal report, it will be added as a comment to APRS-IS submitted location + - `cfg.EnablePersistentAprsConnection` set to `false` to avoid keeping connection open to APRS-IS + - **[INACTIVE YET]** `cfg.EnableIsToRf` set to `true` to forward APRS-IS traffic to RF + - **[INACTIVE YET]** `cfg.EnableRepeater` set to `true` to enable packet repeater # Test Results ![alt text](images/setup.png)