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　/****************************************************************************** * DISCLAIMER * This software is supplied by Renesas Electronics Corporation and is only * intended for use with Renesas products. No other uses are authorized. This * software is owned by Renesas Electronics Corporation and is protected under * all applicable laws, including copyright laws. * THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING * THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT * LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE * AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED. * TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS * ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE * FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR * ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * Renesas reserves the right, without notice, to make changes to this software * and to discontinue the availability of this software. By using this software, * you agree to the additional terms and conditions found by accessing the * following link: * http://www.renesas.com/disclaimer ******************************************************************************* * Copyright (C) 2010 Renesas Electronics Corporation. All rights reserved. ******************************************************************************* * File Name : serial_printf.c * Version : 1.00 * Device : RX600 Series * Tool-Chain : RX Family C Compiler * OS : None * H/W Platform : RSKRX62N & RSKRX610 * Description : Implements charget & charput for printf and scanf ******************************************************************************* * History : MM.DD.YYYY Version Description * : 10.05.2010 1.00 First Release ******************************************************************************/ /****************************************************************************** Includes <System Includes> , "Project Includes" *****************************************************************************/ /* Device specific SFR definitions */ #include "iodefine.h" /* Used for standard types (e.g. uint8_t) */ #include "stdint.h" /****************************************************************************** Global variables and functions ******************************************************************************/ /****************************************************************************** * Function Name: charput * Description : Outputs a character on a serial port * Arguments : character to output * Return Value : none ******************************************************************************/ void charput(uint8_t output_char) { /* Wait for transmit buffer to be empty */ while(IR(SCI1, TXI1) == 0); /* Clear TXI IR bit */ IR(SCI1, TXI1) = 0; /* Write the character out */ SCI1.TDR = output_char; } /****************************************************************************** End of function charput ******************************************************************************/ /****************************************************************************** * Function Name: charget * Description : Gets a character on a serial port * Arguments : character to output * Return Value : none ******************************************************************************/ uint8_t charget(void) { uint8_t temp; /* Read any 'junk' out of receive buffer */ temp = SCI1.RDR; /* Clear flag to receive next byte */ IR(SCI1, RXI1) = 0; /* Wait for next receive data */ while(IR(SCI1, RXI1) == 0); /* Read data */ temp = SCI1.RDR; /* Echo data back out */ if(temp == 0x0d) { /* Enter was pressed, output newline */ charput('\r'); charput('\n'); } else { /* Echo back character */ charput(temp); } /* Receive data acquired, send back up */ return temp; } /****************************************************************************** End of function charget ******************************************************************************/ int _write(int file,char *ptr,int len) { int i; for(i=0;i<len;i++) { charput(*ptr++); } return len; } int _read (int file, char *ptr, int len) { *ptr=charget(); return (1); }