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