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Diffstat (limited to 'usbdrv/usbportability.h')
| -rw-r--r-- | usbdrv/usbportability.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/usbdrv/usbportability.h b/usbdrv/usbportability.h new file mode 100644 index 0000000..0a861d0 --- /dev/null +++ b/usbdrv/usbportability.h @@ -0,0 +1,143 @@ +/* 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) + */ + +/* +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 + +#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 */ + +#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__ */ |