Joachim Lusiardi
a8a1aedc5a
downloaded from https://www.obdev.at/downloads/vusb/vusb-20121206.tar.gz
144 lines
4.5 KiB
C
144 lines
4.5 KiB
C
/* Name: usbportability.h
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* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
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* Author: Christian Starkjohann
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* Creation Date: 2008-06-17
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* Tabsize: 4
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* Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
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* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
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*/
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/*
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General Description:
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This header is intended to contain all (or at least most of) the compiler
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and library dependent stuff. The C code is written for avr-gcc and avr-libc.
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The API of other development environments is converted to gcc's and avr-libc's
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API by means of defines.
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This header also contains all system includes since they depend on the
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development environment.
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Thanks to Oleg Semyonov for his help with the IAR tools port!
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*/
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#ifndef __usbportability_h_INCLUDED__
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#define __usbportability_h_INCLUDED__
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/* We check explicitly for IAR and CodeVision. Default is avr-gcc/avr-libc. */
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/* ------------------------------------------------------------------------- */
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#if defined __IAR_SYSTEMS_ICC__ || defined __IAR_SYSTEMS_ASM__ /* check for IAR */
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/* ------------------------------------------------------------------------- */
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#ifndef ENABLE_BIT_DEFINITIONS
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# define ENABLE_BIT_DEFINITIONS 1 /* Enable bit definitions */
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#endif
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/* Include IAR headers */
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#include <ioavr.h>
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#ifndef __IAR_SYSTEMS_ASM__
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# include <inavr.h>
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#endif
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#define __attribute__(arg) /* not supported on IAR */
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#ifdef __IAR_SYSTEMS_ASM__
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# define __ASSEMBLER__ /* IAR does not define standard macro for asm */
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#endif
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#ifdef __HAS_ELPM__
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# define PROGMEM __farflash
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#else
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# define PROGMEM __flash
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#endif
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#define USB_READ_FLASH(addr) (*(PROGMEM char *)(addr))
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/* The following definitions are not needed by the driver, but may be of some
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* help if you port a gcc based project to IAR.
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*/
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#define cli() __disable_interrupt()
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#define sei() __enable_interrupt()
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#define wdt_reset() __watchdog_reset()
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#define _BV(x) (1 << (x))
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/* assembler compatibility macros */
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#define nop2 rjmp $+2 /* jump to next instruction */
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#define XL r26
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#define XH r27
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#define YL r28
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#define YH r29
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#define ZL r30
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#define ZH r31
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#define lo8(x) LOW(x)
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#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
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* handles the differences between devices. Since IAR does not use #defines
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* for MCU registers, we can't check for the existence of a particular
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* register with an #ifdef. If the autodetection mechanism fails, include
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* definitions for the required USB_INTR_* macros in your usbconfig.h. See
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* usbconfig-prototype.h and usbdrv.h for details.
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*/
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/* ------------------------------------------------------------------------- */
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#elif __CODEVISIONAVR__ /* check for CodeVision AVR */
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/* ------------------------------------------------------------------------- */
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/* This port is not working (yet) */
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/* #define F_CPU _MCU_CLOCK_FREQUENCY_ seems to be defined automatically */
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#include <io.h>
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#include <delay.h>
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#define __attribute__(arg) /* not supported on IAR */
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#define PROGMEM __flash
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#define USB_READ_FLASH(addr) (*(PROGMEM char *)(addr))
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#ifndef __ASSEMBLER__
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static inline void cli(void)
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{
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#asm("cli");
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}
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static inline void sei(void)
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{
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#asm("sei");
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}
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#endif
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#define _delay_ms(t) delay_ms(t)
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#define _BV(x) (1 << (x))
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#define USB_CFG_USE_SWITCH_STATEMENT 1 /* macro for if() cascase fails for unknown reason */
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#define macro .macro
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#define endm .endmacro
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#define nop2 rjmp .+0 /* jump to next instruction */
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/* ------------------------------------------------------------------------- */
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#else /* default development environment is avr-gcc/avr-libc */
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/* ------------------------------------------------------------------------- */
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#include <avr/io.h>
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#ifdef __ASSEMBLER__
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# define _VECTOR(N) __vector_ ## N /* io.h does not define this for asm */
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#else
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# include <avr/pgmspace.h>
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#endif
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#if USB_CFG_DRIVER_FLASH_PAGE
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# define USB_READ_FLASH(addr) pgm_read_byte_far(((long)USB_CFG_DRIVER_FLASH_PAGE << 16) | (long)(addr))
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#else
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# define USB_READ_FLASH(addr) pgm_read_byte(addr)
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#endif
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#define macro .macro
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#define endm .endm
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#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 */
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#ifndef PRG_RDB
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# define PRG_RDB(addr) USB_READ_FLASH(addr)
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#endif
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#endif /* __usbportability_h_INCLUDED__ */
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