added misc information

micropython/misc/test_devices.txt

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+26 01 16 5C
+26 01 18 52
+26 01 1E 4F
+26 01 17 83
+26 01 1B 5C
+26 01 1E B5
+26 01 13 DA
+26 01 1E 8F
+26 01 18 F1
+26 01 1A CE
+26 01 12 F1
+26 01 1B 18
+26 01 19 40
+26 01 19 96
+26 01 18 FF

micropython/misc/todo.txt

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+TODO: 
+
+1. Only certain frequencies are currently supported by the driver. The frequency can be specified by the 3-byte register FRF for the sx127x chip. For details see the datasheet.
+
+Example:
+ freq = 868.1E6
+ temp = int(freq * 2**19 / f_xosc)
+ lsb = temp & 0xFF
+ mid = temp >> 8 & 0xFF
+ msb = temp >> 16 & 0xFF 
+
+2. Spreading factors 11 and 12 do not work correctly with LoRaWAN. Possible reason: TTN mandates the use of 'Low datarate optimization' at these spreading factors. Maybe we can enable this in the driver?
+
+3. PBC for RFM95 module
+https://github.com/attexx/rfm9x_breakout_board

micropython/misc/upload_notes.txt

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+Upload a file:
+--------------
+ampy --port /dev/ttyUSB0 put main.py
+
+Run a file:
+-----------
+ampy --port /dev/ttyUSB0 run main.py
+
+REPL:
+-----
+picocom /dev/ttyUSB0 -b115200