mikroSDK library for USB UART 4 click

Author: KacaPerendic

README.md

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+![MikroE](http://www.mikroe.com/img/designs/beta/logo_small.png)
+
+---
+
+# USB_UART4 Click
+
+- **CIC Prefix**  : USB_UART4
+- **Author**      : Katarina Perendic
+- **Verison**     : 1.0.0
+- **Date**        : Jan 2018.
+
+---
+
+### Software Support
+
+We provide a library for the USB_UART4 Click on our [LibStock](https://libstock.mikroe.com/projects/view/2310/usb-uart-4-click) 
+page, as well as a demo application (example), developed using MikroElektronika 
+[compilers](http://shop.mikroe.com/compilers). The demo can run on all the main 
+MikroElektronika [development boards](http://shop.mikroe.com/development-boards).
+
+**Library Description**
+
+Initializes and defines UART bus driver, and defines driver's functions for comunication (reading and writing) between USB UART 4 clicks.
+
+Key functions :
+
+- ``` void usbuart4_writeByte(uint8_t input) ``` - Write Single Byte
+- ``` uint8_t usbuart4_readByte() ``` - Read Single Byte
+- ``` uint8_t usbuart4_byteReady() ``` - Check for new byte received
+
+**Examples Description**
+
+- System Initialization - Intializes UART module
+- Application Initialization - Driver intialization
+- Application Task - (code snippet) - Checks if new data byte have received in rx buffer (ready for reading),
+  and if ready than reads one byte from rx buffer. In second case aplication task writes
+  message data via UART.
+
+```.c
+void applicationTask()
+{
+    char tmp;
+    uint8_t rdyFlag;
+
+// RECEIVER - UART polling 
+
+    rdyFlag = usbuart4_byteReady();
+
+    if (1 == rdyFlag)
+    {
+        tmp = usbuart4_readByte();
+        mikrobus_logWrite( &tmp, _LOG_BYTE );
+    }
+
+// TRANSMITER - TX each 2 sec
+
+ /*   for (tmp = 0; tmp < 9; tmp++)
+    {
+        usbuart4_writeByte( MESSAGE_DATA[tmp] );
+        mikrobus_logWrite( "MESSAGE SENT", _LOG_LINE );
+    }
+    Delay_ms(2000);*/
+
+}
+```
+
+The full application code, and ready to use projects can be found on our 
+[LibStock](https://libstock.mikroe.com/projects/view/2310/usb-uart-4-click) page.
+
+Other mikroE Libraries used in the example:
+
+- UART
+
+**Additional notes and informations**
+
+Depending on the development board you are using, you may need 
+[USB UART click](http://shop.mikroe.com/usb-uart-click), 
+[USB UART 2 Click](http://shop.mikroe.com/usb-uart-2-click) or 
+[RS232 Click](http://shop.mikroe.com/rs232-click) to connect to your PC, for 
+development systems with no UART to USB interface available on the board. The 
+terminal available in all Mikroelektronika 
+[compilers](http://shop.mikroe.com/compilers), or any other terminal application 
+of your choice, can be used to read the message.
+
+---
+### Architectures Supported
+
+#### mikroC
+
+| STM | KIN | CEC | MSP | TIVA | PIC | PIC32 | DSPIC | AVR | FT90x |
+|:-:|:-:|:-:|:-:|:-:|:-:|:-:|:-:|:-:|:-:|
+| x | x | x | x | x | x | x | x | x | x |
+
+#### mikroBasic
+
+| STM | KIN | CEC | MSP | TIVA | PIC | PIC32 | DSPIC | AVR | FT90x |
+|:-:|:-:|:-:|:-:|:-:|:-:|:-:|:-:|:-:|:-:|
+| x | x | x | x | x | x | x | x | x | x |
+
+#### mikroPascal
+
+| STM | KIN | CEC | MSP | TIVA | PIC | PIC32 | DSPIC | AVR | FT90x |
+|:-:|:-:|:-:|:-:|:-:|:-:|:-:|:-:|:-:|:-:|
+| x | x | x | x | x | x | x | x | x | x |
+
+---
+---