FC_IO_UART_RX Class Reference

UART Receiver. More...

Inheritance diagram for FC_IO_UART_RX:

Public Member Functions
	FC_IO_UART_RX (int baudrate, int fifo_depth=16)
int	Read (char *pD, int nData)
int	ReadString (char *pD, int pD_size)
bool	ReadString (char *buff, int buff_size, char eop)
	operator char ()
char	GetByte ()
int	NumValid ()

Detailed Description

UART Receiver.

Adds to interface:
<name> : in std_logic
where <name> is c++ object name.
Any number of instances are allowed.

// This example shows how to use the FC_IO_UART_RX, FC_IO_UART_TX and FC_IO_SegmentDisplay classes.
// When started the application sends a hello world message on the tx uart.
// When receiving a char the char is scrolled on the the segment display
// The received bytes are sent on tx (echoed).
 
#include "fc_io.h"
#include "fc_system.h"
 
U32 ToSeg(char c);  // Translates char to active segments
 
int main()
{
    //% hw_begin
    FC_IO_Clk clk(100);
    FC_IO_UART_RX rx(115200);
    FC_IO_UART_TX tx(115200);
    FC_IO_SegmentDisplay sd(7,4);
    //% hw_end
 
    tx << "Hello world!!\r\n";
    U32 seg[4] = {0,0,0,0};             // Init all segments
    for (;;)
    {   
        if( rx.NumValid() > 0 ) {
            char b = rx.GetByte();      // Read one byte
            for(int i=3;i>=0;i--) {     // Shift the segments
                if(i==0)
                    seg[i] = ToSeg(b);
                else
                    seg[i] = seg[i-1];
                sd.SetDisplay( seg[i], i );
            }
            tx << b;                    // Echo the received byte    
        }
    }
}