#STM32-Radio-SI4703 An STM32duino library to control radio chips SI4703-HW322.

Tested on Linux & 'Arduino IDE' v 1.8.9 (installed for STM32duino).

Hardware: SI4703 HW-322.

#DESCRIPTION This library is a fork of the original radio library by Matthias Hertel. You can find the original library here: http://www.mathertel.de/Arduino

#PROJECT This is an adaptation of the original STM32Duino library, with some corrections and additions. The code has also been simplified to allow the use of the SI4703 chip only. There is also a powerful example included in the source. Load the ZIP in the Arduino IDE and then load the example provided and save the sketch on your STM32Duino. Open the Serial console with 57600 baud to interact and see the current radio information.

This is the menù you will see in your serial console with the provided sketch example

================================================================================
Station: DEEJAY@95.90 Mhz
HasRDS, STEREO, RSSI: 45, Volume: 5, NOT MUTED
RDS-Text: radio deejay one nation one station                             
RDS-Time: 09:52
================================================================================

'+' Volume Up, '-' Volume Down, 'm' Mute Toggle
'u' Seek Up, 'd' Seek Down, 'fnnnnn' Set frequency to nnnnn
'0' Deejay
'1' RDS
'2' Virgin
'3' Radio24
STM32Duino board green led will be on if the tuned Station is Stereo. An external LED (with a 150-200 ohm series resistor) can be connected on PB3 to duplicate stereo indicator.

#Wiring The SI4703 board has to be connected by using the following connections:

| STM32Duino pin     | Radio chip signal  |
| -------------------| -------------------|
| 3.3V               | VCC                |
| GND                | GND                | 
| PB6                | SCLK               |
| PB7                | SDIO               |
| PB4                | RST                |
| PB3                | External STEREO LED|

author: Felice Murolo
copyright: Copyright (c) 2019 by Felice Murolo, Salerno, Italia.
email: linuxboyATgiove.tk
license: This work is licensed under a LGPL license.