AVR Z-LINK®

ftdi.c File Reference

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Detailed Description

This files contains the functions for initializing and sending data using the FTDI USB fifo on the STK541 board.

Application note:

AVR414: User's Guide - ATAVRRZ502 - Accessory Kit

Documentation

For comprehensive code documentation, supported compilers, compiler settings and supported devices see readme.html

Author:

Atmel Corporation: http://www.atmel.com
Support email: avr@atmel.com

Name

Revision

1.2

RCSfile

callbacks.c,v

Date

2006/09/15 17:02:19

Definition in file ftdi.c.

#include "ftdi.h"

Include dependency graph for ftdi.c:

Go to the source code of this file.

Functions
void	ftdiInitialization (void)
	Initialize the USB FIFO.
void	ftdiSendSymbol (const uint8_t symbol)
	Send one symbol to the USB FIFO.

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Function Documentation

void ftdiInitialization

(

void

)

Initialize the USB FIFO.

Note:

This function uses the external memory interface.

Definition at line 36 of file ftdi.c.

References FTDI_CONFIGURE_PIN_CHANGE_INTERRUPT, FTDI_ENABLE_RECEIVER, FTDI_ENABLE_TX, and XRAM_ENABLE.

Referenced by serialInterfaceInitialization().

                               {

        XRAM_ENABLE( ); 
        
        /* make sure USB_RXF and USB_TXE are inputs */
        FTDI_ENABLE_TX( );
        
        //Enable external interrupt on FTDI_RX pin.
        FTDI_CONFIGURE_PIN_CHANGE_INTERRUPT( );
        FTDI_ENABLE_RECEIVER( );
}

void ftdiSendSymbol

(

const uint8_t

symbol

)

Send one symbol to the USB FIFO.

This function passes one symbol (8 bits) to the FTDI USB FIFO chip.

Note:

ftdiInitialization() must be called first.

Parameters:

symbol

Symbol to be sent.

Definition at line 57 of file ftdi.c.

References FTDI_Fifo, FTDI_PIN, FTDI_TX_MASK, and LOW.

Referenced by sendSymbol().

                                           {

        //Wait until the fifo is ready.
        while( ( FTDI_TX_MASK & FTDI_PIN ) != LOW ){
                ;  
        }
        
        //Write symbol to memory address.
        *FTDI_Fifo = ( symbol );        
}