README: patch arduino-lmic to use SF10

README.md

@@ -31,5 +31,24 @@ Das sind die verwendeten Libraries [1]:
 | https://github.com/mcci-catena/SHT1x.git  | be7042c | Tue, 20 Sep 2011 13:56:23 +1000  |
 
 
+Patch arduino-lmic, so initial SF10 is used initially:
+
+`
+[joerg@cinnamon src]$ git diff
+diff --git a/src/lmic/lmic_bandplan_eu868.h b/src/lmic/lmic_bandplan_eu868.h
+index efff7d5..74efb37 100644
+--- a/src/lmic/lmic_bandplan_eu868.h
++++ b/src/lmic/lmic_bandplan_eu868.h
+@@ -61,7 +61,7 @@ LMICeu868_isValidBeacon1(const uint8_t *d) {
+ #undef LMICbandplan_isFSK
+ #define LMICbandplan_isFSK()    (/* RX datarate */LMIC.dndr == EU868_DR_FSK)
+ 
+-#define LMICbandplan_getInitialDrJoin() (EU868_DR_SF7)
++#define LMICbandplan_getInitialDrJoin() (EU868_DR_SF10)
+ 
+ void LMICeu868_setBcnRxParams(void);
+ #define LMICbandplan_setBcnRxParams()   LMICeu868_setBcnRxParams()
+`
+
 `[1]:
 [joerg@cinnamon libraries]$ for i in Adafruit_BME280_Library Adafruit_Sensor arduino-lmic arduino-lorawan Catena-Arduino-Platform Catena-mcciadk MCCI_FRAM_I2C Q2-HX711-Arduino-Library SparkFun_Qwiic_Scale_NAU7802_Arduino_Library OneWire SHT1x ; do cd $i; echo "| $(git remote -v |grep fetch |awk '{print $2}' |tr '\n' ' ') | $(git log --pretty=format:'%h | %cD ' -n 1) |" ; cd ..; done`