/* sd2snes - SD card based universal cartridge for the SNES Copyright (C) 2009-2010 Maximilian Rehkopf AVR firmware portion Inspired by and based on code from sd2iec, written by Ingo Korb et al. See sdcard.c|h, config.h. FAT file system access based on code by ChaN, Jim Brain, Ingo Korb, see ff.c|h. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License only. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA fpga.h: FPGA (re)configuration */ #ifndef FPGA_H #define FPGA_H void fpga_init(void); uint8_t fpga_test(void); void fpga_postinit(void); void fpga_pgm(uint8_t* filename); void set_avr_read(uint8_t val); void set_avr_write(uint8_t val); void set_avr_ena(uint8_t val); void set_avr_nextaddr(uint8_t val); void set_avr_addr_reset(uint8_t val); void set_avr_data(uint8_t data); void set_avr_addr_en(uint8_t val); void set_avr_mapper(uint8_t val); void set_avr_bank(uint8_t val); uint8_t SPI_OFFLOAD; #define FPGA_TEST_TOKEN (0xa5) // some macros for bulk transfers (faster) #define FPGA_SEND_BYTE(data) do {SET_AVR_DATA(data); CCLK();} while (0) #define FPGA_SEND_BYTE_SERIAL(data) do {SET_AVR_DATA(data); CCLK();\ SET_AVR_DATA(data<<1); CCLK(); SET_AVR_DATA(data<<2); CCLK();\ SET_AVR_DATA(data<<3); CCLK(); SET_AVR_DATA(data<<4); CCLK();\ SET_AVR_DATA(data<<5); CCLK(); SET_AVR_DATA(data<<6); CCLK();\ SET_AVR_DATA(data<<7); CCLK();} while (0) #define SET_CCLK() do {PORTD |= _BV(PD4);} while (0) #define CLR_CCLK() do {PORTD &= ~_BV(PD4);} while (0) #define CCLK() do {SET_CCLK(); CLR_CCLK();} while (0) #define SET_AVR_READ() do {PORTB |= _BV(PB3);} while (0) #define CLR_AVR_READ() do {PORTB &= ~_BV(PB3);} while (0) #define SET_AVR_WRITE() do {PORTB |= _BV(PB2);} while (0) #define CLR_AVR_WRITE() do {PORTB &= ~_BV(PB2);} while (0) #define SET_AVR_EXCL() do {PORTD |= _BV(PD7);} while (0) #define CLR_AVR_EXCL() do {PORTD &= ~_BV(PD7);} while (0) #define SET_AVR_NEXTADDR() do {PORTA |= _BV(PA4);} while (0) #define CLR_AVR_NEXTADDR() do {PORTA &= ~_BV(PA4);} while (0) #define SET_AVR_ADDR_RESET() do {PORTA |= _BV(PA5);} while (0) #define CLR_AVR_ADDR_RESET() do {PORTA &= ~_BV(PA5);} while (0) #define SET_AVR_ADDR_EN() do {PORTA |= _BV(PA6);} while (0) #define CLR_AVR_ADDR_EN() do {PORTA &= ~_BV(PA6);} while (0) #define AVR_NEXTADDR() do {SET_AVR_NEXTADDR(); CLR_AVR_NEXTADDR();} while (0) #define AVR_ADDR_RESET() do {CLR_AVR_ADDR_RESET();\ AVR_NEXTADDR();SET_AVR_ADDR_RESET();} while (0) #define SET_AVR_DATA(data) do {PORTC = (uint8_t)data;} while (0) #define AVR_READ() do {CLR_AVR_READ(); SET_AVR_READ();} while (0) #define AVR_WRITE() do {CLR_AVR_WRITE(); SET_AVR_WRITE();} while (0) #define AVR_DATA (PINC) #endif