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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 740 2009-04-13 18:23:31Z cs $
- */
-
- /*
- 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!
- */
-
- #ifndef __usbportability_h_INCLUDED__
- #define __usbportability_h_INCLUDED__
-
- /* We check explicitly for IAR and CodeVision. Default is avr-gcc/avr-libc. */
-
- /* ------------------------------------------------------------------------- */
- #if defined __IAR_SYSTEMS_ICC__ || defined __IAR_SYSTEMS_ASM__ /* check for IAR */
- /* ------------------------------------------------------------------------- */
-
- #ifndef ENABLE_BIT_DEFINITIONS
- # define ENABLE_BIT_DEFINITIONS 1 /* Enable bit definitions */
- #endif
-
- /* Include IAR headers */
- #include <ioavr.h>
- #ifndef __IAR_SYSTEMS_ASM__
- # include <inavr.h>
- #endif
-
- #define __attribute__(arg) /* not supported on IAR */
-
- #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
-
- #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 */
-
- /* 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 */
-
- #include <io.h>
- #include <delay.h>
-
- #define __attribute__(arg) /* not supported on IAR */
-
- #define PROGMEM __flash
- #define USB_READ_FLASH(addr) (*(PROGMEM char *)(addr))
-
- #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 */
-
- #define macro .macro
- #define endm .endmacro
- #define nop2 rjmp .+0 /* jump to next instruction */
-
- /* ------------------------------------------------------------------------- */
- #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
-
- #define USB_READ_FLASH(addr) pgm_read_byte(addr)
-
- #define macro .macro
- #define endm .endm
- #define nop2 rjmp .+0 /* jump to next instruction */
-
- #endif /* development environment */
-
- /* for conveniecne, ensure that PRG_RDB exists */
- #ifndef PRG_RDB
- # define PRG_RDB(addr) USB_READ_FLASH(addr)
- #endif
- #endif /* __usbportability_h_INCLUDED__ */
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