1 | /* Name: usbportability.h
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2 | * Project: AVR USB driver
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3 | * Author: Christian Starkjohann
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4 | * Creation Date: 2008-06-17
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5 | * Tabsize: 4
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6 | * Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
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7 | * License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
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8 | * This Revision: $Id: usbportability.h 692 2008-11-07 15:07:40Z cs $
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9 | */
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10 |
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11 | /*
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12 | General Description:
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13 | This header is intended to contain all (or at least most of) the compiler
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14 | and library dependent stuff. The C code is written for avr-gcc and avr-libc.
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15 | The API of other development environments is converted to gcc's and avr-libc's
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16 | API by means of defines.
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17 |
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18 | This header also contains all system includes since they depend on the
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19 | development environment.
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20 |
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21 | Thanks to Oleg Semyonov for his help with the IAR tools port!
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22 | */
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23 |
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24 | #ifndef __usbportability_h_INCLUDED__
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25 | #define __usbportability_h_INCLUDED__
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26 |
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27 | /* We check explicitly for IAR and CodeVision. Default is avr-gcc/avr-libc. */
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28 |
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29 | /* ------------------------------------------------------------------------- */
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30 | #if defined __IAR_SYSTEMS_ICC__ || defined __IAR_SYSTEMS_ASM__ /* check for IAR */
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31 | /* ------------------------------------------------------------------------- */
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32 |
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33 | #ifndef ENABLE_BIT_DEFINITIONS
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34 | # define ENABLE_BIT_DEFINITIONS 1 /* Enable bit definitions */
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35 | #endif
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36 |
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37 | /* Include IAR headers */
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38 | #include <ioavr.h>
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39 | #ifndef __IAR_SYSTEMS_ASM__
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40 | # include <inavr.h>
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41 | #endif
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42 |
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43 | #define __attribute__(arg) /* not supported on IAR */
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44 |
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45 | #ifdef __IAR_SYSTEMS_ASM__
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46 | # define __ASSEMBLER__ /* IAR does not define standard macro for asm */
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47 | #endif
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48 |
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49 | #ifdef __HAS_ELPM__
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50 | # define PROGMEM __farflash
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51 | #else
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52 | # define PROGMEM __flash
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53 | #endif
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54 |
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55 | #define USB_READ_FLASH(addr) (*(PROGMEM char *)(addr))
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56 |
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57 | /* The following definitions are not needed by the driver, but may be of some
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58 | * help if you port a gcc based project to IAR.
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59 | */
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60 | #define cli() __disable_interrupt()
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61 | #define sei() __enable_interrupt()
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62 | #define wdt_reset() __watchdog_reset()
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63 | #define _BV(x) (1 << (x))
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64 |
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65 | /* assembler compatibility macros */
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66 | #define nop2 rjmp $+2 /* jump to next instruction */
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67 | #define XL r26
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68 | #define XH r27
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69 | #define YL r28
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70 | #define YH r29
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71 | #define ZL r30
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72 | #define ZH r31
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73 | #define lo8(x) LOW(x)
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74 | #define hi8(x) (((x)>>8) & 0xff) /* not HIGH to allow XLINK to make a proper range check */
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75 |
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76 | /* Depending on the device you use, you may get problems with the way usbdrv.h
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77 | * handles the differences between devices. Since IAR does not use #defines
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78 | * for MCU registers, we can't check for the existence of a particular
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79 | * register with an #ifdef. If the autodetection mechanism fails, include
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80 | * definitions for the required USB_INTR_* macros in your usbconfig.h. See
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81 | * usbconfig-prototype.h and usbdrv.h for details.
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82 | */
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83 |
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84 | /* ------------------------------------------------------------------------- */
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85 | #elif __CODEVISIONAVR__ /* check for CodeVision AVR */
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86 | /* ------------------------------------------------------------------------- */
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87 | /* This port is not working (yet) */
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88 |
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89 | /* #define F_CPU _MCU_CLOCK_FREQUENCY_ seems to be defined automatically */
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90 |
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91 | #include <io.h>
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92 | #include <delay.h>
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93 |
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94 | #define __attribute__(arg) /* not supported on IAR */
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95 |
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96 | #define PROGMEM __flash
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97 | #define USB_READ_FLASH(addr) (*(PROGMEM char *)(addr))
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98 |
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99 | #ifndef __ASSEMBLER__
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100 | static inline void cli(void)
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101 | {
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102 | #asm("cli");
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103 | }
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104 | static inline void sei(void)
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105 | {
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106 | #asm("sei");
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107 | }
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108 | #endif
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109 | #define _delay_ms(t) delay_ms(t)
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110 | #define _BV(x) (1 << (x))
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111 | #define USB_CFG_USE_SWITCH_STATEMENT 1 /* macro for if() cascase fails for unknown reason */
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112 |
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113 | #define macro .macro
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114 | #define endm .endmacro
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115 | #define nop2 rjmp .+0 /* jump to next instruction */
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116 |
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117 | /* ------------------------------------------------------------------------- */
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118 | #else /* default development environment is avr-gcc/avr-libc */
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119 | /* ------------------------------------------------------------------------- */
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120 |
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121 | #include <avr/io.h>
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122 | #ifdef __ASSEMBLER__
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123 | # define _VECTOR(N) __vector_ ## N /* io.h does not define this for asm */
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124 | #else
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125 | # include <avr/pgmspace.h>
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126 | #endif
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127 |
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128 | #define USB_READ_FLASH(addr) pgm_read_byte(addr)
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129 |
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130 | #define macro .macro
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131 | #define endm .endm
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132 | #define nop2 rjmp .+0 /* jump to next instruction */
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133 |
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134 | #endif /* development environment */
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135 |
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136 | /* for conveniecne, ensure that PRG_RDB exists */
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137 | #ifndef PRG_RDB
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138 | # define PRG_RDB(addr) USB_READ_FLASH(addr)
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139 | #endif
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140 | #endif /* __usbportability_h_INCLUDED__ */
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