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/*! \file rprintf.h \brief printf routine and associated routines. *///****************************************************************************//// File Name : 'rprintf.h'// Title : printf routine and associated routines// Author : Pascal Stang - Copyright (C) 2000-2002// Created : 2000.12.26// Revised : 2003.5.1// Version : 1.0// Target MCU : Atmel AVR series and other targets// Editor Tabs : 4//// NOTE: This code is currently below version 1.0, and therefore is considered// to be lacking in some functionality or documentation, or may not be fully// tested. Nonetheless, you can expect most functions to work.//// This code is distributed under the GNU Public License// which can be found at http://www.gnu.org/licenses/gpl.txt///// \ingroup general/// \defgroup rprintf printf() Function Library (rprintf.c)/// \code #include "rprintf.h" \endcode/// \par Overview/// The rprintf function library provides a simplified (reduced) version of/// the common C printf() function. See the code files for details about/// which printf features are supported. Also in this library are a/// variety of functions for fast printing of certain common data types/// (variable types). Functions include print string from RAM, print/// string from ROM, print string snippet, print hex byte/short/long, and/// a custom-formatted number print, as well as an optional floating-point/// print routine.////// \note All output from the rprintf library can be directed to any device/// or software which accepts characters. This means that rprintf output/// can be sent to the UART (serial port) or can be used with the LCD/// display libraries to print formatted text on the screen.////****************************************************************************//@{#ifndef RPRINTF_H#define RPRINTF_H// needed for use of PSTR below#include <avr/pgmspace.h>// configuration// defining RPRINTF_SIMPLE will compile a smaller, simpler, and faster printf() function// defining RPRINTF_COMPLEX will compile a larger, more capable, and slower printf() function#ifndef RPRINTF_COMPLEX#define RPRINTF_SIMPLE#endif// Define RPRINTF_FLOAT to enable the floating-point printf function: rprintfFloat()// (adds +4600bytes or 2.2Kwords of code)// defines/constants#define STRING_IN_RAM 0#define STRING_IN_ROM 1// make a putchar for those that are used to using it//#define putchar(c) rprintfChar(c);// functions//! Initializes the rprintf library for an output stream./// You must call this initializer once before using any other rprintf function./// The argument must be a character stream output function.void rprintfInit(void (*putchar_func)(unsigned char c));//! prints a single character to the current output devicevoid rprintfChar(unsigned char c);//! prints a null-terminated string stored in RAMvoid rprintfStr(char str[]);//! Prints a section of a string stored in RAM./// Begins printing at position indicated by <start>,/// and prints number of characters indicated by <len>.void rprintfStrLen(char str[], unsigned int start, unsigned int len);//! prints a string stored in program rom/// \note This function does not actually store your string in/// program rom, but merely reads it assuming you stored it properly.void rprintfProgStr(const prog_char str[]);//! Using the function rprintfProgStrM(...) automatically causes/// your string to be stored in ROM, thereby not wasting precious RAM./// Example usage:/// \code/// rprintfProgStrM("Hello, this string is stored in program rom");/// \endcode#define rprintfProgStrM(string) (rprintfProgStr(PSTR(string)))//! Prints a carriage-return and line-feed./// Useful when printing to serial ports/terminals.void rprintfCRLF(void);// Prints the number contained in "data" in hex format// u04,u08,u16,and u32 functions handle 4,8,16,or 32 bits respectivelyvoid rprintfu04(unsigned char data); ///< Print 4-bit hex number. Outputs a single hex character.void rprintfu08(unsigned char data); ///< Print 8-bit hex number. Outputs two hex characters.void rprintfu16(unsigned short data); ///< Print 16-bit hex number. Outputs four hex characters.void rprintfu32(unsigned long data); ///< Print 32-bit hex number. Outputs eight hex characters.//! A flexible integer-number printing routine./// Print the number "n" in the given "base", using exactly "numDigits"./// Print +/- if signed flag "isSigned" is TRUE./// The character specified in "padchar" will be used to pad extra characters.////// Examples:/// \code/// uartPrintfNum(10, 6, TRUE, ' ', 1234); --> " +1234"/// uartPrintfNum(10, 6, FALSE, '0', 1234); --> "001234"/// uartPrintfNum(16, 6, FALSE, '.', 0x5AA5); --> "..5AA5"/// \endcodevoid rprintfNum(char base, char numDigits, char isSigned, char padchar, long n);#ifdef RPRINTF_FLOAT//! floating-point print routinevoid rprintfFloat(char numDigits, double x);#endif// NOTE: Below you'll see the function prototypes of rprintf1RamRom and// rprintf2RamRom. rprintf1RamRom and rprintf2RamRom are both reduced versions// of the regular C printf() command. However, they are modified to be able// to read their text/format strings from RAM or ROM in the Atmel microprocessors.// Unless you really intend to, do not use the "RamRom" versions of the functions// directly. Instead use the #defined function versions://// printfx("text/format",args) ...to keep your text/format string stored in RAM// - or -// printfxROM("text/format",args) ...to keep your text/format string stored in ROM//// where x is either 1 or 2 for the simple or more powerful version of printf()//// Since there is much more ROM than RAM available in the Atmel microprocessors,// and nearly all text/format strings are constant (never change in the course// of the program), you should try to use the ROM printf version exclusively.// This will ensure you leave as much RAM as possible for program variables and// data.//! \fn int rprintf(const char *format, ...);/// A reduced substitute for the usual C printf() function./// This function actually points to either rprintf1RamRom or rprintf2RamRom/// depending on the user's selection. Rprintf1 is a simple small fast print/// routine while rprintf2 is larger and slower but more capable. To choose/// the routine you would like to use, define either RPRINTF_SIMPLE or/// RPRINTF_COMPLEX in global.h.#ifdef RPRINTF_SIMPLE//! A simple printf routine./// Called by rprintf() - does a simple printf (supports %d, %x, %c)./// Supports:/// - %d - decimal/// - %x - hex/// - %c - characterint rprintf1RamRom(unsigned char stringInRom, const char *format, ...);// #defines for RAM or ROM operation#define rprintf1(format, args...) rprintf1RamRom(STRING_IN_ROM, PSTR(format), ## args)#define rprintf1RAM(format, args...) rprintf1RamRom(STRING_IN_RAM, format, ## args)// *** Default rprintf(...) ***// this next line determines what the the basic rprintf() defaults to:#define rprintf(format, args...) rprintf1RamRom(STRING_IN_ROM, PSTR(format), ## args)#endif#ifdef RPRINTF_COMPLEX//! A more powerful printf routine./// Called by rprintf() - does a more powerful printf (supports %d, %u, %o, %x, %c, %s)./// Supports:/// - %d - decimal/// - %u - unsigned decimal/// - %o - octal/// - %x - hex/// - %c - character/// - %s - strings/// - and the width,precision,padding modifiers/// \note This printf does not support floating point numbers.int rprintf2RamRom(unsigned char stringInRom, const char *sfmt, ...);// #defines for RAM or ROM operation#define rprintf2(format, args...) rprintf2RamRom(STRING_IN_ROM, format, ## args)#define rprintf2RAM(format, args...) rprintf2RamRom(STRING_IN_RAM, format, ## args)// *** Default rprintf(...) ***// this next line determines what the the basic rprintf() defaults to:#define rprintf(format, args...) rprintf2RamRom(STRING_IN_ROM, PSTR(format), ## args)#endif#endif//@}