/* Paging LAB RDS Encoder V1.01

• Version List:

• • V1 - Start version
• • V1.01 - Fix bug with long text messages more than 24 symbols; fix bug with Tone Only Messsges *

• Protocol description: https://en.wikipedia.org/wiki/Radio_Data_System

• Datasheet: https://web.archive.org/web/20161020015638/http://www.nrscstandards.org/SG/nrsc-4-B.pdf

• Transmitter chip: SI4713 (f.e. Adafruit SI4713 PCB)

• Source for chip library: https://github.com/PE5PVB/si4713 Library updated for send 1A, 4A and 7A groups

• Datasheet for chip: https://www.skyworksinc.com/-/media/Skyworks/SL/documents/public/application-notes/AN332.pdf

• Description:

• • Tone Only Messages
• • 10 digits Numeric Messages - use ":" for space symbol
• • 18 digits Numeric Messages - use ":" for space symbol
• • Aplphanimeric - up to 80 symbols
• • Data and Time - Fixed. You can upgrade encdoder with any RTC module if you want. F.e. https://github.com/PaulStoffregen/DS1307RTC
• • Monitor: turn ON for monitoring RDS packet sending
• • Test message: ON/OFF; periodicaly send Numeric 10 digits format message
• • Warnings: there is no validation of input data values, please enter the data correctly
• • IMPORTANT: serial port baudrate = 57600; Terminal settings: No line Ending
• • National/International Mode: Work only in National mode, you need read Country code from EEPROM or try all countries from 1 to F
• • Pager`s Adrress: The pager address can be found on the back cover. If it is missing, you will have to read it from EEPROM I2C 24C02.

• FaceBook group about paging: https://www.facebook.com/groups/116072934759380
  */