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/* Name: usbportability.h |
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers |
* Author: Christian Starkjohann |
* Creation Date: 2008-06-17 |
* Tabsize: 4 |
* Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH |
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt) |
* This Revision: $Id: usbportability.h 785 2010-05-30 17:57:07Z cs $ |
*/ |
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/* |
General Description: |
This header is intended to contain all (or at least most of) the compiler |
and library dependent stuff. The C code is written for avr-gcc and avr-libc. |
The API of other development environments is converted to gcc's and avr-libc's |
API by means of defines. |
|
This header also contains all system includes since they depend on the |
development environment. |
|
Thanks to Oleg Semyonov for his help with the IAR tools port! |
*/ |
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#ifndef __usbportability_h_INCLUDED__ |
#define __usbportability_h_INCLUDED__ |
|
/* We check explicitly for IAR and CodeVision. Default is avr-gcc/avr-libc. */ |
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/* ------------------------------------------------------------------------- */ |
#if defined __IAR_SYSTEMS_ICC__ || defined __IAR_SYSTEMS_ASM__ /* check for IAR */ |
/* ------------------------------------------------------------------------- */ |
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#ifndef ENABLE_BIT_DEFINITIONS |
# define ENABLE_BIT_DEFINITIONS 1 /* Enable bit definitions */ |
#endif |
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/* Include IAR headers */ |
#include <ioavr.h> |
#ifndef __IAR_SYSTEMS_ASM__ |
# include <inavr.h> |
#endif |
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#define __attribute__(arg) /* not supported on IAR */ |
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#ifdef __IAR_SYSTEMS_ASM__ |
# define __ASSEMBLER__ /* IAR does not define standard macro for asm */ |
#endif |
|
#ifdef __HAS_ELPM__ |
# define PROGMEM __farflash |
#else |
# define PROGMEM __flash |
#endif |
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#define USB_READ_FLASH(addr) (*(PROGMEM char *)(addr)) |
|
/* The following definitions are not needed by the driver, but may be of some |
* help if you port a gcc based project to IAR. |
*/ |
#define cli() __disable_interrupt() |
#define sei() __enable_interrupt() |
#define wdt_reset() __watchdog_reset() |
#define _BV(x) (1 << (x)) |
|
/* assembler compatibility macros */ |
#define nop2 rjmp $+2 /* jump to next instruction */ |
#define XL r26 |
#define XH r27 |
#define YL r28 |
#define YH r29 |
#define ZL r30 |
#define ZH r31 |
#define lo8(x) LOW(x) |
#define hi8(x) (((x)>>8) & 0xff) /* not HIGH to allow XLINK to make a proper range check */ |
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/* Depending on the device you use, you may get problems with the way usbdrv.h |
* handles the differences between devices. Since IAR does not use #defines |
* for MCU registers, we can't check for the existence of a particular |
* register with an #ifdef. If the autodetection mechanism fails, include |
* definitions for the required USB_INTR_* macros in your usbconfig.h. See |
* usbconfig-prototype.h and usbdrv.h for details. |
*/ |
|
/* ------------------------------------------------------------------------- */ |
#elif __CODEVISIONAVR__ /* check for CodeVision AVR */ |
/* ------------------------------------------------------------------------- */ |
/* This port is not working (yet) */ |
|
/* #define F_CPU _MCU_CLOCK_FREQUENCY_ seems to be defined automatically */ |
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#include <io.h> |
#include <delay.h> |
|
#define __attribute__(arg) /* not supported on IAR */ |
|
#define PROGMEM __flash |
#define USB_READ_FLASH(addr) (*(PROGMEM char *)(addr)) |
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#ifndef __ASSEMBLER__ |
static inline void cli(void) |
{ |
#asm("cli"); |
} |
static inline void sei(void) |
{ |
#asm("sei"); |
} |
#endif |
#define _delay_ms(t) delay_ms(t) |
#define _BV(x) (1 << (x)) |
#define USB_CFG_USE_SWITCH_STATEMENT 1 /* macro for if() cascase fails for unknown reason */ |
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#define macro .macro |
#define endm .endmacro |
#define nop2 rjmp .+0 /* jump to next instruction */ |
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/* ------------------------------------------------------------------------- */ |
#else /* default development environment is avr-gcc/avr-libc */ |
/* ------------------------------------------------------------------------- */ |
|
#include <avr/io.h> |
#ifdef __ASSEMBLER__ |
# define _VECTOR(N) __vector_ ## N /* io.h does not define this for asm */ |
#else |
# include <avr/pgmspace.h> |
#endif |
|
#if USB_CFG_DRIVER_FLASH_PAGE |
# define USB_READ_FLASH(addr) pgm_read_byte_far(((long)USB_CFG_DRIVER_FLASH_PAGE << 16) | (long)(addr)) |
#else |
# define USB_READ_FLASH(addr) pgm_read_byte(addr) |
#endif |
|
#define macro .macro |
#define endm .endm |
#define nop2 rjmp .+0 /* jump to next instruction */ |
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#endif /* development environment */ |
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/* for conveniecne, ensure that PRG_RDB exists */ |
#ifndef PRG_RDB |
# define PRG_RDB(addr) USB_READ_FLASH(addr) |
#endif |
#endif /* __usbportability_h_INCLUDED__ */ |