# HG changeset patch # User John Tsiombikas # Date 1331093511 -7200 # Node ID e3dc7705ad9ca5e1cc2f778244a3245006af998c # Parent c50064b181c2016db050f72012517b33ce9ee99d communications stuff diff -r c50064b181c2 -r e3dc7705ad9c COPYING --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/COPYING Wed Mar 07 06:11:51 2012 +0200 @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff -r c50064b181c2 -r e3dc7705ad9c src/comm.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/comm.c Wed Mar 07 06:11:51 2012 +0200 @@ -0,0 +1,187 @@ +/* +gbasys - a gameboy advance hardware abstraction library +Copyright (C) 2005-2012 John Tsiombikas + +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, either version 3 of the License, or +(at your option) any later version. + +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, see . +*/ + +#include "comm.h" +#include "error.h" +#include "signal.h" +#include "intr.h" + +#define REG_SIODATA32 *((volatile unsigned short*)0x4000120) +#define REG_SIOCNT *((volatile unsigned short*)0x4000128) +#define REG_SIODATA8 *((volatile unsigned short*)0x400012a) +#define REG_RCNT *((volatile unsigned short*)0x4000134) + +/* REG_SIOCNT bits */ +#define SIOCNT_CLK_INTERN (1 << 0) +#define SIOCNT_CLK_2MHZ (1 << 1) +#define SIOCNT_RECV_ENABLE (1 << 2) +#define SIOCNT_SEND_ENABLE (1 << 3) +#define SIOCNT_START (1 << 7) +#define SIOCNT_XFER_LEN (1 << 12) +#define SIOCNT_INT_ENABLE (1 << 14) + +/* only in 16bit multi player mode */ +#define SIOCNT_BAUD_38400 1 +#define SIOCNT_BAUD_57600 2 +#define SIOCNT_BAUD_115200 3 +#define SIOCNT_SI_STATUS (1 << 2) +#define SIOCNT_SD_STATUS (1 << 3) +#define SIOCNT_SLAVE1 (1 << 4) +#define SIOCNT_SLAVE2 (2 << 4) +#define SIOCNT_SLAVE3 (3 << 4) +#define SIOCNT_ERROR (1 << 6) + +/* REG_RCNT bits */ +#define RCNT_GPIO_DATA_MASK 0x000f +#define RCNT_GPIO_DIR_MASK 0x00f0 +#define RCNT_GPIO_INT_ENABLE (1 << 8) +#define RCNT_MODE_GPIO 0x8000 +#define RCNT_MODE_JOYBUS 0xc000 + + +static void setup_sio(int bits, int ms); +static void setup_gpio(void); +static void comm_intr(void); + +static int sio_bits, sio_master; +static void *sio_buf; + + +void comm_setup(int mode) +{ + int master = 0; + + mask(INTR_COMM); + interrupt(INTR_COMM, comm_intr); + unmask(INTR_COMM); + + switch(mode) { + case COMM_SIO8_MASTER: + master = 1; + case COMM_SIO8_SLAVE: + setup_sio(8, master); + break; + + case COMM_SIO32_MASTER: + master = 1; + case COMM_SIO32_SLAVE: + setup_sio(32, master); + break; + + case COMM_GPIO: + setup_gpio(); + break; + + default: + panic("unimplemented comm mode\n"); + } +} + +static void setup_sio(int bits, int ms) +{ + REG_RCNT = 0; /* serial mode */ + + sio_bits = bits; + sio_master = ms; +} + +void sio_transfer(void *in, const void *out) +{ + /* load outgoing data */ + if(sio_bits <= 8) { + REG_SIODATA8 = *(unsigned char*)out; + } else { + REG_SIODATA32 = *(unsigned long*)out; + } + sio_buf = in; + + /* IE=1, external clock, send enable */ + REG_SIOCNT = SIOCNT_INT_ENABLE | SIOCNT_SEND_ENABLE; + + /* start transfer */ + REG_SIOCNT |= SIOCNT_START; + + /* wait until the transfer is complete */ + while(REG_SIOCNT & SIOCNT_START); +} + +void sio_transfer_async(void *in, const void *out) +{ + /* load outgoing data */ + if(sio_bits <= 8) { + REG_SIODATA8 = *(unsigned char*)out; + } else { + REG_SIODATA32 = *(unsigned long*)out; + } + sio_buf = in; + + /* IE=1, external clock, send enable */ + REG_SIOCNT = SIOCNT_INT_ENABLE | SIOCNT_SEND_ENABLE; + + /* start transfer */ + REG_SIOCNT |= SIOCNT_START; +} + + +static void setup_gpio(void) +{ + REG_RCNT = RCNT_MODE_GPIO | RCNT_GPIO_INT_ENABLE; +} + +void gpio_dir(int dir_so, int dir_si, int dir_sd, int dir_sc) +{ + unsigned char mask; + + mask = ((dir_so & 1) << 7) | ((dir_si & 1) << 6) | ((dir_sd & 1) << 5) | + ((dir_sc & 1) << 4); + gpio_dir_mask(mask); +} + +void gpio_dir_mask(unsigned char dir) +{ + REG_RCNT = (REG_RCNT & 0xff0f) | ((dir & 0xf) << 4); +} + +void gpio_set(unsigned char val) +{ + REG_RCNT = (REG_RCNT & 0xfff0) | (val & 0xf); +} + +unsigned char gpio_get(void) +{ + return REG_RCNT & 0xf; +} + +static void comm_intr(void) +{ + if(sio_buf) { + if(REG_SIOCNT & SIOCNT_START) { + panic("asio: interrupt with start bit == 1"); + } + if(sio_bits <= 8) { + *(unsigned char*)sio_buf = REG_SIODATA8; + } else { + *(unsigned long*)sio_buf = REG_SIODATA32; + } + sio_buf = 0; + } + + if(signal_func(SIGIO)) { + raise(SIGIO); + } +} diff -r c50064b181c2 -r e3dc7705ad9c src/comm.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/comm.h Wed Mar 07 06:11:51 2012 +0200 @@ -0,0 +1,48 @@ +/* +gbasys - a gameboy advance hardware abstraction library +Copyright (C) 2005-2012 John Tsiombikas + +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, either version 3 of the License, or +(at your option) any later version. + +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, see . +*/ +#ifndef COMM_H_ +#define COMM_H_ + +enum { + COMM_SIO8_MASTER, + COMM_SIO8_SLAVE, + COMM_SIO32_MASTER, + COMM_SIO32_SLAVE, + COMM_UART, + COMM_GPIO +}; + +void comm_setup(int mode); + +/* synchronous transfer, blocks until complete */ +void sio_transfer(void *in, const void *out); + +/* async transfer, returns immediately, raises SIGIO when complete */ +void sio_transfer_async(void *in, const void *out); + + +/* GPIO functions */ +enum { GPIO_DIR_IN, GPIO_DIR_OUT }; + +void gpio_dir(int dir_so, int dir_si, int dir_sd, int dir_sc); +void gpio_dir_mask(unsigned char dir); + +void gpio_set(unsigned char val); +unsigned char gpio_get(void); + +#endif /* COMM_H_ */ diff -r c50064b181c2 -r e3dc7705ad9c src/error.c --- a/src/error.c Sun Mar 04 07:06:41 2012 +0200 +++ b/src/error.c Wed Mar 07 06:11:51 2012 +0200 @@ -1,7 +1,7 @@ /* -Copyright 2004 John Tsiombikas +Copyright 2004-2012 John Tsiombikas -This file is part of libgba, a library for GameBoy Advance development. +This file is part of gbasys, a library for GameBoy Advance development. 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 @@ -23,11 +23,11 @@ void panic(const char *str) { set_video_mode(VMODE_LFB_240x160_16, 0); clear_buffer(front_buffer, RGB(140, 30, 20)); - + set_text_color(0xffff, RGB(140, 30, 20)); draw_string(" Don't Panic! ", 0, 0, front_buffer); draw_string("_________________________", 0, 8, front_buffer); if(str) draw_string(str, 0, 32, front_buffer); - for(;;); + for(;;); } diff -r c50064b181c2 -r e3dc7705ad9c src/error.h --- a/src/error.h Sun Mar 04 07:06:41 2012 +0200 +++ b/src/error.h Wed Mar 07 06:11:51 2012 +0200 @@ -1,5 +1,5 @@ /* -Copyright 2004 John Tsiombikas +Copyright 2004-2012 John Tsiombikas This file is part of libgba, a library for GameBoy Advance development. diff -r c50064b181c2 -r e3dc7705ad9c src/gfx.h --- a/src/gfx.h Sun Mar 04 07:06:41 2012 +0200 +++ b/src/gfx.h Wed Mar 07 06:11:51 2012 +0200 @@ -23,7 +23,7 @@ struct pixel_buffer { int x, y, bpp; void *pixels; -}; +}; enum { VMODE_LFB_240x160_16 = 3, @@ -52,7 +52,7 @@ void copy_buffer(const struct pixel_buffer *src, struct pixel_buffer *dst); -#define wait_vsync() while(*reg_vcount < front_buffer->yres) +#define wait_vsync() while(*((volatile unsigned short*)0x4000006) < front_buffer->y) #define put_pixel(px, py, col, pbuf) ((unsigned short*)(pbuf)->pixels)[(py) * (pbuf)->x + (px)] = col void draw_line(int x1, int y1, int x2, int y2, unsigned short col, struct pixel_buffer *pbuf); diff -r c50064b181c2 -r e3dc7705ad9c src/intr.h --- a/src/intr.h Sun Mar 04 07:06:41 2012 +0200 +++ b/src/intr.h Wed Mar 07 06:11:51 2012 +0200 @@ -1,7 +1,7 @@ /* -Copyright 2004 John Tsiombikas +Copyright 2004-2012 John Tsiombikas -This file is part of libgba, a library for GameBoy Advance development. +This file is part of gbasys, a library for GameBoy Advance development. 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 diff -r c50064b181c2 -r e3dc7705ad9c src/signal.c --- a/src/signal.c Sun Mar 04 07:06:41 2012 +0200 +++ b/src/signal.c Wed Mar 07 06:11:51 2012 +0200 @@ -32,11 +32,11 @@ void sig_init(void) { int i; - + for(i=0; i +Copyright 2004-2012 John Tsiombikas -This file is part of libgba, a library for GameBoy Advance development. +This file is part of gbasys, a library for GameBoy Advance development. 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 diff -r c50064b181c2 -r e3dc7705ad9c src/term.c --- a/src/term.c Sun Mar 04 07:06:41 2012 +0200 +++ b/src/term.c Wed Mar 07 06:11:51 2012 +0200 @@ -1,7 +1,7 @@ /* -Copyright 2004 John Tsiombikas +Copyright 2004-2012 John Tsiombikas -This file is part of libgba, a library for GameBoy Advance development. +This file is part of gbasys, a library for GameBoy Advance development. 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 @@ -45,7 +45,7 @@ int c; if(fp != stdin) panic("getc: only stdin valid"); - + save_signal(SIGIO); signal(SIGIO, noop); while(!key_queue->next) pause(); diff -r c50064b181c2 -r e3dc7705ad9c src/term.h --- a/src/term.h Sun Mar 04 07:06:41 2012 +0200 +++ b/src/term.h Wed Mar 07 06:11:51 2012 +0200 @@ -1,7 +1,7 @@ /* -Copyright 2004 John Tsiombikas +Copyright 2004-2012 John Tsiombikas -This file is part of libgba, a library for GameBoy Advance development. +This file is part of gbasys, a library for GameBoy Advance development. 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 @@ -32,6 +32,8 @@ int gba_getc(FILE *fp); int gba_putc(int c, FILE *fp); +int gba_printf(const char *fmt, ...); + #ifdef getc #undef getc #endif @@ -42,4 +44,9 @@ #endif #define putc(c, fp) gba_putc(c, fp) +#ifdef printf +#undef printf +#endif +#define printf gba_printf + #endif /* _TERM_H_ */