FC_IO_SegmentDisplay Class Reference

Segment Display controller. More...

Inheritance diagram for FC_IO_SegmentDisplay:

Public Member Functions
	FC_IO_SegmentDisplay (U32 numSegments, U32 numMDisplay, U32 select_polarity=1)
void	SetDisplay (U32 segments, U32 display)

Detailed Description

Segment Display controller.

Adds to interface:
<name>_seg : out std_logic_vector(numSegments-1 downto 0) <name>_sel : out std_logic_vector(numDisplay-1 downto 0) 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    
        }
    }
}