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tama fixes

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RogueMaster
2022-09-16 19:45:34 -04:00
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GNU GENERAL PUBLIC LICENSE
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# TamaLIB - A hardware agnostic Tamagotchi P1 emulation library
## Synopsis
TamaLib is a hardware agnostic Tamagotchi P1 emulation library built from scratch. It is self-contained and aims at running on any platform powerful enough, from microcontrollers (MCUs) to desktop computers, thus spreading virtual life across the digital world.
So far, it has been successfully implemented on different platforms:
- Desktop computers (check out [TamaTool](https://github.com/jcrona/tamatool/) for more information)
- STM32F072 MCU based board (check out [MCUGotchi](https://github.com/jcrona/mcugotchi/) for more information).
- OpenTama which is an STM32L072 MCU based board (check out [OpenTama](https://github.com/Sparkr-tech/opentama) and [MCUGotchi](https://github.com/jcrona/mcugotchi/) for more information).
- Arduino UNO (check out [ArduinoGotchi](https://github.com/GaryZ88/ArduinoGotchi/) for more information).
## Importing TamaLIB
TamaLIB cannot be used as is. In order to create life on a specific target, you need to import all TamaLIB related __.c__ and __.h__ files in your project (for instance in a __lib__ subfolder), to create a __hal_types.h__ file using the template provided and to implement the __hal_t__ structure, that will act as an abstraction layer between TamaLIB and your OS or SDK (detailed information can be found in __hal.h__). This abstraction layer basically connects TamaLIB to your target's buttons, clock, audio and screen, while also defining the C types that TamaLIB should use to represent 4-bit, 5-bit, 8-bit, 12-bit, 13-bit and 32-bit variables. Once done, you will be able to call the TamaLIB API from your project.
## Using the TamaLIB API
Basically:
```
/* ... */
/* Register the HAL */
tamalib_register_hal(&my_hal);
/* ... */
/* Initialize TamaLIB */
tamalib_init(my_program, my_breakpoints, 1000000); // my_breakpoints can be NULL, 1000000 means that timestamps will be expressed in us
/* ... */
/* Enter TamaLIB's loop */
tamalib_mainloop();
/* ... */
/* Release TamaLIB */
tamalib_release();
/* ... */
```
Your main project should then forward any button input to TamaLIB using the `tamalib_set_button()` function.
As an alternative to `tamalib_mainloop()`, you can call `tamalib_step()` directly if your execution flow requires something more complex than a simple mainloop. In that case, TamaLIB will neither call the HAL `handler()` function, nor the HAL `update_screen()` function by itslef.
## License
TamaLIB is distributed under the GPLv2 license. See the LICENSE file for more information.
## Hardware information
The Tamagotchi P1 is based on an
[E0C6S46 Epson MCU](https://download.epson-europe.com/pub/electronics-de/asmic/4bit/62family/technicalmanual/tm_6s46.pdf),
and runs at 32,768 kHz. Its LCD is 32x16 B/W pixels, with 8 icons.
To my knowledge, the ROM available online has been extracted from a high-res picture of a die. The ROM mask was clear enough to be optically read. The pictures can be seen [there](https://siliconpr0n.org/map/bandai/tamagotchi-v1/) (thx asterick for the link !).
I would love to see the same work done on a P2 and add support for it in TamaLIB/TamaTool !
__
Copyright (C) 2021 Jean-Christophe Rona

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/*
* TamaLIB - A hardware agnostic Tamagotchi P1 emulation library
*
* Copyright (C) 2021 Jean-Christophe Rona <jc@rona.fr>
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _CPU_H_
#define _CPU_H_
#include "hal.h"
#define MEMORY_SIZE 4096 // 4096 x 4 bits (640 x 4 bits of RAM)
#define MEM_RAM_ADDR 0x000
#define MEM_RAM_SIZE 0x280
#define MEM_DISPLAY1_ADDR 0xE00
#define MEM_DISPLAY1_SIZE 0x050
#define MEM_DISPLAY2_ADDR 0xE80
#define MEM_DISPLAY2_SIZE 0x050
#define MEM_IO_ADDR 0xF00
#define MEM_IO_SIZE 0x080
/* Define this if you want to reduce the footprint of the memory buffer from 4096 u4_t (most likely bytes)
* to 464 u8_t (bytes for sure), while increasing slightly the number of operations needed to read/write from/to it.
*/
#define LOW_FOOTPRINT
#ifdef LOW_FOOTPRINT
/* Invalid memory areas are not buffered to reduce the footprint of the library in memory */
#define MEM_BUFFER_SIZE (MEM_RAM_SIZE + MEM_DISPLAY1_SIZE + MEM_DISPLAY2_SIZE + MEM_IO_SIZE)/2
/* Maps the CPU memory to the memory buffer */
#define RAM_TO_MEMORY(n) ((n - MEM_RAM_ADDR)/2)
#define DISP1_TO_MEMORY(n) ((n - MEM_DISPLAY1_ADDR + MEM_RAM_SIZE)/2)
#define DISP2_TO_MEMORY(n) ((n - MEM_DISPLAY2_ADDR + MEM_RAM_SIZE + MEM_DISPLAY1_SIZE)/2)
#define IO_TO_MEMORY(n) ((n - MEM_IO_ADDR + MEM_RAM_SIZE + MEM_DISPLAY1_SIZE + MEM_DISPLAY2_SIZE)/2)
#define SET_RAM_MEMORY(buffer, n, v) {buffer[RAM_TO_MEMORY(n)] = (buffer[RAM_TO_MEMORY(n)] & ~(0xF << (((n) % 2) << 2))) | ((v) & 0xF) << (((n) % 2) << 2);}
#define SET_DISP1_MEMORY(buffer, n, v) {buffer[DISP1_TO_MEMORY(n)] = (buffer[DISP1_TO_MEMORY(n)] & ~(0xF << (((n) % 2) << 2))) | ((v) & 0xF) << (((n) % 2) << 2);}
#define SET_DISP2_MEMORY(buffer, n, v) {buffer[DISP2_TO_MEMORY(n)] = (buffer[DISP2_TO_MEMORY(n)] & ~(0xF << (((n) % 2) << 2))) | ((v) & 0xF) << (((n) % 2) << 2);}
#define SET_IO_MEMORY(buffer, n, v) {buffer[IO_TO_MEMORY(n)] = (buffer[IO_TO_MEMORY(n)] & ~(0xF << (((n) % 2) << 2))) | ((v) & 0xF) << (((n) % 2) << 2);}
#define SET_MEMORY(buffer, n, v) {if ((n) < (MEM_RAM_ADDR + MEM_RAM_SIZE)) { \
SET_RAM_MEMORY(buffer, n, v); \
} else if ((n) < MEM_DISPLAY1_ADDR) { \
/* INVALID_MEMORY */ \
} else if ((n) < (MEM_DISPLAY1_ADDR + MEM_DISPLAY1_SIZE)) { \
SET_DISP1_MEMORY(buffer, n, v); \
} else if ((n) < MEM_DISPLAY2_ADDR) { \
/* INVALID_MEMORY */ \
} else if ((n) < (MEM_DISPLAY2_ADDR + MEM_DISPLAY2_SIZE)) { \
SET_DISP2_MEMORY(buffer, n, v); \
} else if ((n) < MEM_IO_ADDR) { \
/* INVALID_MEMORY */ \
} else if ((n) < (MEM_IO_ADDR + MEM_IO_SIZE)) { \
SET_IO_MEMORY(buffer, n, v); \
} else { \
/* INVALID_MEMORY */ \
}}
#define GET_RAM_MEMORY(buffer, n) ((buffer[RAM_TO_MEMORY(n)] >> (((n) % 2) << 2)) & 0xF)
#define GET_DISP1_MEMORY(buffer, n) ((buffer[DISP1_TO_MEMORY(n)] >> (((n) % 2) << 2)) & 0xF)
#define GET_DISP2_MEMORY(buffer, n) ((buffer[DISP2_TO_MEMORY(n)] >> (((n) % 2) << 2)) & 0xF)
#define GET_IO_MEMORY(buffer, n) ((buffer[IO_TO_MEMORY(n)] >> (((n) % 2) << 2)) & 0xF)
#define GET_MEMORY(buffer, n) ((buffer[ \
((n) < (MEM_RAM_ADDR + MEM_RAM_SIZE)) ? RAM_TO_MEMORY(n) : \
((n) < MEM_DISPLAY1_ADDR) ? 0 : \
((n) < (MEM_DISPLAY1_ADDR + MEM_DISPLAY1_SIZE)) ? DISP1_TO_MEMORY(n) : \
((n) < MEM_DISPLAY2_ADDR) ? 0 : \
((n) < (MEM_DISPLAY2_ADDR + MEM_DISPLAY2_SIZE)) ? DISP2_TO_MEMORY(n) : \
((n) < MEM_IO_ADDR) ? 0 : \
((n) < (MEM_IO_ADDR + MEM_IO_SIZE)) ? IO_TO_MEMORY(n) : 0 \
] >> (((n) % 2) << 2)) & 0xF)
#define MEM_BUFFER_TYPE u8_t
#else
#define MEM_BUFFER_SIZE MEMORY_SIZE
#define SET_MEMORY(buffer, n, v) {buffer[n] = v;}
#define SET_RAM_MEMORY(buffer, n, v) SET_MEMORY(buffer, n, v)
#define SET_DISP1_MEMORY(buffer, n, v) SET_MEMORY(buffer, n, v)
#define SET_DISP2_MEMORY(buffer, n, v) SET_MEMORY(buffer, n, v)
#define SET_IO_MEMORY(buffer, n, v) SET_MEMORY(buffer, n, v)
#define GET_MEMORY(buffer, n) (buffer[n])
#define GET_RAM_MEMORY(buffer, n) GET_MEMORY(buffer, n)
#define GET_DISP1_MEMORY(buffer, n) GET_MEMORY(buffer, n)
#define GET_DISP2_MEMORY(buffer, n) GET_MEMORY(buffer, n)
#define GET_IO_MEMORY(buffer, n) GET_MEMORY(buffer, n)
#define MEM_BUFFER_TYPE u4_t
#endif
typedef struct breakpoint {
u13_t addr;
struct breakpoint *next;
} breakpoint_t;
/* Pins (TODO: add other pins) */
typedef enum {
PIN_K00 = 0x0,
PIN_K01 = 0x1,
PIN_K02 = 0x2,
PIN_K03 = 0x3,
PIN_K10 = 0X4,
PIN_K11 = 0X5,
PIN_K12 = 0X6,
PIN_K13 = 0X7,
} pin_t;
typedef enum {
PIN_STATE_LOW = 0,
PIN_STATE_HIGH = 1,
} pin_state_t;
typedef enum {
INT_PROG_TIMER_SLOT = 0,
INT_SERIAL_SLOT = 1,
INT_K10_K13_SLOT = 2,
INT_K00_K03_SLOT = 3,
INT_STOPWATCH_SLOT = 4,
INT_CLOCK_TIMER_SLOT = 5,
INT_SLOT_NUM,
} int_slot_t;
typedef struct {
u4_t factor_flag_reg;
u4_t mask_reg;
bool_t triggered; /* 1 if triggered, 0 otherwise */
u8_t vector;
} interrupt_t;
typedef struct {
u13_t *pc;
u12_t *x;
u12_t *y;
u4_t *a;
u4_t *b;
u5_t *np;
u8_t *sp;
u4_t *flags;
u32_t *tick_counter;
u32_t *clk_timer_timestamp;
u32_t *prog_timer_timestamp;
bool_t *prog_timer_enabled;
u8_t *prog_timer_data;
u8_t *prog_timer_rld;
u32_t *call_depth;
interrupt_t *interrupts;
MEM_BUFFER_TYPE *memory;
} state_t;
void cpu_add_bp(breakpoint_t **list, u13_t addr);
void cpu_free_bp(breakpoint_t **list);
void cpu_set_speed(u8_t speed);
state_t * cpu_get_state(void);
u32_t cpu_get_depth(void);
void cpu_set_input_pin(pin_t pin, pin_state_t state);
void cpu_sync_ref_timestamp(void);
void cpu_refresh_hw(void);
void cpu_reset(void);
bool_t cpu_init(const u12_t *program, breakpoint_t *breakpoints, u32_t freq);
void cpu_release(void);
int cpu_step(void);
#endif /* _CPU_H_ */

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/*
* TamaLIB - A hardware agnostic Tamagotchi P1 emulation library
*
* Copyright (C) 2021 Jean-Christophe Rona <jc@rona.fr>
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _HAL_H_
#define _HAL_H_
#include "../hal_types.h"
#ifndef NULL
#define NULL 0
#endif
typedef enum {
LOG_ERROR = 0x1,
LOG_INFO = (0x1 << 1),
LOG_MEMORY = (0x1 << 2),
LOG_CPU = (0x1 << 3),
} log_level_t;
/* The Hardware Abstraction Layer
* NOTE: This structure acts as an abstraction layer between TamaLIB and the OS/SDK.
* All pointers MUST be implemented, but some implementations can be left empty.
*/
typedef struct {
/* Memory allocation functions
* NOTE: Needed only if breakpoints support is required.
*/
void * (*malloc)(u32_t size);
void (*free)(void *ptr);
/* What to do if the CPU has halted
*/
void (*halt)(void);
/* Log related function
* NOTE: Needed only if log messages are required.
*/
bool_t (*is_log_enabled)(log_level_t level);
void (*log)(log_level_t level, char *buff, ...);
/* Clock related functions
* NOTE: Timestamps granularity is configured with tamalib_init(), an accuracy
* of ~30 us (1/32768) is required for a cycle accurate emulation.
*/
void (*sleep_until)(timestamp_t ts);
timestamp_t (*get_timestamp)(void);
/* Screen related functions
* NOTE: In case of direct hardware access to pixels, the set_XXXX() functions
* (called for each pixel/icon update) can directly drive them, otherwise they
* should just store the data in a buffer and let update_screen() do the actual
* rendering (at 30 fps).
*/
void (*update_screen)(void);
void (*set_lcd_matrix)(u8_t x, u8_t y, bool_t val);
void (*set_lcd_icon)(u8_t icon, bool_t val);
/* Sound related functions
* NOTE: set_frequency() changes the output frequency of the sound, while
* play_frequency() decides whether the sound should be heard or not.
*/
void (*set_frequency)(u32_t freq);
void (*play_frequency)(bool_t en);
/* Event handler from the main app (if any)
* NOTE: This function usually handles button related events, states loading/saving ...
*/
int (*handler)(void);
} hal_t;
extern hal_t *g_hal;
#endif /* _HAL_H_ */

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/*
* TamaLIB - A hardware agnostic Tamagotchi P1 emulation library
*
* Copyright (C) 2021 Jean-Christophe Rona <jc@rona.fr>
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _HAL_TYPES_H_
#define _HAL_TYPES_H_
typedef unsigned char bool_t;
typedef unsigned char u4_t;
typedef unsigned char u5_t;
typedef unsigned char u8_t;
typedef unsigned short u12_t;
typedef unsigned short u13_t;
typedef unsigned int u32_t;
typedef unsigned int timestamp_t; // WARNING: Must be an unsigned type to properly handle wrapping (u32 wraps in around 1h11m when expressed in us)
#endif /* _HAL_TYPES_H_ */

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/*
* TamaLIB - A hardware agnostic Tamagotchi P1 emulation library
*
* Copyright (C) 2021 Jean-Christophe Rona <jc@rona.fr>
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "hw.h"
#include "cpu.h"
#include "hal.h"
/* SEG -> LCD mapping */
static u8_t seg_pos[40] = {0, 1, 2, 3, 4, 5, 6, 7, 32, 8, 9, 10, 11, 12 ,13 ,14, 15, 33, 34, 35, 31, 30, 29, 28, 27, 26, 25, 24, 36, 23, 22, 21, 20, 19, 18, 17, 16, 37, 38, 39};
bool_t hw_init(void)
{
/* Buttons are active LOW */
cpu_set_input_pin(PIN_K00, PIN_STATE_HIGH);
cpu_set_input_pin(PIN_K01, PIN_STATE_HIGH);
cpu_set_input_pin(PIN_K02, PIN_STATE_HIGH);
return 0;
}
void hw_release(void)
{
}
void hw_set_lcd_pin(u8_t seg, u8_t com, u8_t val)
{
if (seg_pos[seg] < LCD_WIDTH) {
g_hal->set_lcd_matrix(seg_pos[seg], com, val);
} else {
/*
* IC n -> seg-com|...
* IC 0 -> 8-0 |18-3 |19-2
* IC 1 -> 8-1 |17-0 |19-3
* IC 2 -> 8-2 |17-1 |37-12|38-13|39-14
* IC 3 -> 8-3 |17-2 |18-1 |19-0
* IC 4 -> 28-12|37-13|38-14|39-15
* IC 5 -> 28-13|37-14|38-15
* IC 6 -> 28-14|37-15|39-12
* IC 7 -> 28-15|38-12|39-13
*/
if (seg == 8 && com < 4) {
g_hal->set_lcd_icon(com, val);
} else if (seg == 28 && com >= 12) {
g_hal->set_lcd_icon(com - 8, val);
}
}
}
void hw_set_button(button_t btn, btn_state_t state)
{
pin_state_t pin_state = (state == BTN_STATE_PRESSED) ? PIN_STATE_LOW : PIN_STATE_HIGH;
switch (btn) {
case BTN_LEFT:
cpu_set_input_pin(PIN_K02, pin_state);
break;
case BTN_MIDDLE:
cpu_set_input_pin(PIN_K01, pin_state);
break;
case BTN_RIGHT:
cpu_set_input_pin(PIN_K00, pin_state);
break;
}
}
void hw_set_buzzer_freq(u4_t freq)
{
u32_t snd_freq = 0;
switch (freq) {
case 0:
/* 4096.0 Hz */
snd_freq = 40960;
break;
case 1:
/* 3276.8 Hz */
snd_freq = 32768;
break;
case 2:
/* 2730.7 Hz */
snd_freq = 27307;
break;
case 3:
/* 2340.6 Hz */
snd_freq = 23406;
break;
case 4:
/* 2048.0 Hz */
snd_freq = 20480;
break;
case 5:
/* 1638.4 Hz */
snd_freq = 16384;
break;
case 6:
/* 1365.3 Hz */
snd_freq = 13653;
break;
case 7:
/* 1170.3 Hz */
snd_freq = 11703;
break;
}
if (snd_freq != 0) {
g_hal->set_frequency(snd_freq);
}
}
void hw_enable_buzzer(bool_t en)
{
g_hal->play_frequency(en);
}

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/*
* TamaLIB - A hardware agnostic Tamagotchi P1 emulation library
*
* Copyright (C) 2021 Jean-Christophe Rona <jc@rona.fr>
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _HW_H_
#define _HW_H_
#include "hal.h"
#define LCD_WIDTH 32
#define LCD_HEIGHT 16
#define ICON_NUM 8
typedef enum {
BTN_STATE_RELEASED = 0,
BTN_STATE_PRESSED,
} btn_state_t;
typedef enum {
BTN_LEFT = 0,
BTN_MIDDLE,
BTN_RIGHT,
} button_t;
bool_t hw_init(void);
void hw_release(void);
void hw_set_lcd_pin(u8_t seg, u8_t com, u8_t val);
void hw_set_button(button_t btn, btn_state_t state);
void hw_set_buzzer_freq(u4_t freq);
void hw_enable_buzzer(bool_t en);
#endif /* _HW_H_ */

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/*
* TamaLIB - A hardware agnostic Tamagotchi P1 emulation library
*
* Copyright (C) 2021 Jean-Christophe Rona <jc@rona.fr>
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "tamalib.h"
#include "hw.h"
#include "cpu.h"
#include "hal.h"
#define DEFAULT_FRAMERATE 30 // fps
static exec_mode_t exec_mode = EXEC_MODE_RUN;
static u32_t step_depth = 0;
static timestamp_t screen_ts = 0;
static u32_t ts_freq;
static u8_t g_framerate = DEFAULT_FRAMERATE;
hal_t *g_hal;
bool_t tamalib_init(const u12_t *program, breakpoint_t *breakpoints, u32_t freq)
{
bool_t res = 0;
res |= cpu_init(program, breakpoints, freq);
res |= hw_init();
ts_freq = freq;
return res;
}
void tamalib_release(void)
{
hw_release();
cpu_release();
}
void tamalib_set_framerate(u8_t framerate)
{
g_framerate = framerate;
}
u8_t tamalib_get_framerate(void)
{
return g_framerate;
}
void tamalib_register_hal(hal_t *hal)
{
g_hal = hal;
}
void tamalib_set_exec_mode(exec_mode_t mode)
{
exec_mode = mode;
step_depth = cpu_get_depth();
cpu_sync_ref_timestamp();
}
void tamalib_step(void)
{
if (exec_mode == EXEC_MODE_PAUSE) {
return;
}
if (cpu_step()) {
exec_mode = EXEC_MODE_PAUSE;
step_depth = cpu_get_depth();
} else {
switch (exec_mode) {
case EXEC_MODE_PAUSE:
case EXEC_MODE_RUN:
break;
case EXEC_MODE_STEP:
exec_mode = EXEC_MODE_PAUSE;
break;
case EXEC_MODE_NEXT:
if (cpu_get_depth() <= step_depth) {
exec_mode = EXEC_MODE_PAUSE;
step_depth = cpu_get_depth();
}
break;
case EXEC_MODE_TO_CALL:
if (cpu_get_depth() > step_depth) {
exec_mode = EXEC_MODE_PAUSE;
step_depth = cpu_get_depth();
}
break;
case EXEC_MODE_TO_RET:
if (cpu_get_depth() < step_depth) {
exec_mode = EXEC_MODE_PAUSE;
step_depth = cpu_get_depth();
}
break;
}
}
}
void tamalib_mainloop(void)
{
timestamp_t ts;
while (!g_hal->handler()) {
tamalib_step();
/* Update the screen @ g_framerate fps */
ts = g_hal->get_timestamp();
if (ts - screen_ts >= ts_freq/g_framerate) {
screen_ts = ts;
g_hal->update_screen();
}
}
}

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/*
* TamaLIB - A hardware agnostic Tamagotchi P1 emulation library
*
* Copyright (C) 2021 Jean-Christophe Rona <jc@rona.fr>
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _TAMALIB_H_
#define _TAMALIB_H_
#include "cpu.h"
#include "hw.h"
#include "hal.h"
#define tamalib_set_button(btn, state) hw_set_button(btn, state)
#define tamalib_set_speed(speed) cpu_set_speed(speed)
#define tamalib_get_state() cpu_get_state()
#define tamalib_refresh_hw() cpu_refresh_hw()
#define tamalib_reset() cpu_reset()
#define tamalib_add_bp(list, addr) cpu_add_bp(list, addr)
#define tamalib_free_bp(list) cpu_free_bp(list)
typedef enum {
EXEC_MODE_PAUSE,
EXEC_MODE_RUN,
EXEC_MODE_STEP,
EXEC_MODE_NEXT,
EXEC_MODE_TO_CALL,
EXEC_MODE_TO_RET,
} exec_mode_t;
void tamalib_release(void);
bool_t tamalib_init(const u12_t *program, breakpoint_t *breakpoints, u32_t freq);
void tamalib_set_framerate(u8_t framerate);
u8_t tamalib_get_framerate(void);
void tamalib_register_hal(hal_t *hal);
void tamalib_set_exec_mode(exec_mode_t mode);
/* NOTE: Only one of these two functions must be used in the main application
* (tamalib_step() should be used only if tamalib_mainloop() does not fit the
* main application execution flow).
*/
void tamalib_step(void);
void tamalib_mainloop(void);
#endif /* _TAMALIB_H_ */