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// ====================================================================== |
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// Common definitions for the USB driver |
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// |
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// Copyright 2006-2010 Dick Streefland |
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// |
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// This is free software, licensed under the terms of the GNU General |
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// Public License as published by the Free Software Foundation. |
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// ====================================================================== |
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#ifdef __ASSEMBLER__ |
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#define __SFR_OFFSET 0 |
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#endif |
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#include <avr/io.h> |
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#include "usbtiny.h" |
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// Preprocessor magic |
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#define CAT2(a,b) CAT2EXP(a, b) |
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#define CAT2EXP(a,b) a ## b |
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#define CAT3(a,b,c) CAT3EXP(a, b, c) |
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#define CAT3EXP(a,b,c) a ## b ## c |
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// I/O Ports for USB |
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#define USB_IN CAT2(PIN, USBTINY_PORT) |
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#define USB_OUT CAT2(PORT, USBTINY_PORT) |
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#define USB_DDR CAT2(DDR, USBTINY_PORT) |
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// I/O bit masks for USB |
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#define USB_MASK_DMINUS (1 << (USBTINY_DMINUS)) |
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#define USB_MASK_DPLUS (1 << (USBTINY_DPLUS)) |
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#define USB_MASK (USB_MASK_DMINUS | USB_MASK_DPLUS) |
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// Interrupt configuration |
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#if defined EICRA |
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# define USB_INT_CONFIG EICRA |
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#else |
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# define USB_INT_CONFIG MCUCR |
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#endif |
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#define USB_INT_CONFIG_SET ((1 << CAT3(ISC,USBTINY_INT,1)) | (1 << CAT3(ISC,USBTINY_INT,0))) |
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#define USB_INT_VECTOR CAT3(INT, USBTINY_INT, _vect) |
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// Interrupt enable |
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#if defined GIMSK |
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# define USB_INT_ENABLE GIMSK |
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#elif defined EIMSK |
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# define USB_INT_ENABLE EIMSK |
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#else |
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# define USB_INT_ENABLE GICR |
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#endif |
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#define USB_INT_ENABLE_BIT CAT2(INT,USBTINY_INT) |
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// Interrupt pending bit |
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#if defined EIFR |
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# define USB_INT_PENDING EIFR |
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#else |
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# define USB_INT_PENDING GIFR |
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#endif |
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#define USB_INT_PENDING_BIT CAT2(INTF,USBTINY_INT) |
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#if defined INF0 && ! defined INTF0 |
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# define INTF0 INF0 // fix for incorrect definition in iotn13.h |
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#endif |
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// USB PID values |
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#define USB_PID_SETUP 0x2d |
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#define USB_PID_OUT 0xe1 |
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#define USB_PID_IN 0x69 |
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#define USB_PID_DATA0 0xc3 |
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#define USB_PID_DATA1 0x4b |
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#define USB_PID_ACK 0xd2 |
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#define USB_PID_NAK 0x5a |
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#define USB_PID_STALL 0x1e |
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// Various constants |
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#define USB_BUFSIZE 11 // PID + data + CRC |
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// Bit manipulation macros |
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#define BIT_CLR(reg,bit) { (reg) &= ~ _BV(bit); } |
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#define BIT_SET(reg,bit) { (reg) |= _BV(bit); } |
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#define BIT_TST(reg,bit) (((reg) & _BV(bit)) != 0) |
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// I/O port manipulation macros |
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#define DDR_CLR(p,b) BIT_CLR(DDR ## p, b) |
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#define DDR_SET(p,b) BIT_SET(DDR ## p, b) |
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#define PORT_CLR(p,b) BIT_CLR(PORT ## p, b) |
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#define PORT_SET(p,b) BIT_SET(PORT ## p, b) |
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#define PORT_TST(p,b) BIT_TST(PORT ## p, b) |
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#define PIN_TST(p,b) BIT_TST(PIN ## p, b) |
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#define PIN_SET(p,b) BIT_SET(PIN ## p, b) |
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// Macros that can be used with an argument of the form (port,bit) |
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#define INPUT(bit) DDR_CLR bit |
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#define OUTPUT(bit) DDR_SET bit |
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#define CLR(bit) PORT_CLR bit |
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#define SET(bit) PORT_SET bit |
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#define ISSET(bit) PORT_TST bit |
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#define TST(bit) PIN_TST bit |
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#define TOGGLE(bit) PIN_SET bit |