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NesCat.ino
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//MEOW?
// ▄▄
// ▓▀██▄ ▄▓█▀▓▓
// ▐▌░ ▀███▄ ▄███▀ ░▓▒
// ▓▌ ░░░▒██████████████▓░▒░░░▓▌
// ▄▄▄██████▄▓▌ ░▒▒▒▒▀██████████████▄░░░▓▌
// ▄█████████████▌░▒▒▒▒▒▄████████████████▒▐▌
// ▄████████████████▌▄▄▄█████████▒░█████████▓▒
// ▐████████████████████████████▓ ▀████████░
// ▐███████▀▒▒▄▒ ▓██████████▓ ▀▓██████▒
// ▐▌ ▒▒ ░▓▒ ▓███████▀▀▀▓▓▄ ▄▓▓▀▀███▌
// ▐▓▌ ░▒▒▓▓▒░ ▀▀ ▀▀ ▐▓▌
// ▐██▌ ▒▒▒▓▓▓▒ ▒▒ ▄▓█▓▒
// ▐████▒ ▒▓▒ ░▓▓▓▓▒▒▒▒▒▒▒▓▓▓▄▓▓▓▓███▀░░░░░░
// ▐██████▓▄▄▄▄▄▄▄▄▄▄▓▓▄▄░ ░▓▒ ▒░░▓▓░░░░░
// ░▓█████████████████████▓▒▄▄▄▄▄▄▄▄▓▓▓▓▓▓▓▓▓█▓░░░
//▒▒▒░▒▒▓██████████████████▀▀▀▀▀▀▀▀▀▀▀▀▀▀▒▒▒ ░░ ▒▒
//▒▒▒▒▒▒▒▒▒▒▒▒▒░░░░░░░░░░░░░░░░░▄▄▒▒▒▒▒▒▒▒░ ░░░░ ▒▓▒
//▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒░░░░░░▄▓██████▓▒ ░ ░▓▓▀
//▓▓▓▓▓▓▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▓███████▀ ░ ▄▓▓▓
// ▓▓▓▓▓▓▓▓▓▓▓▓▓▓▄▒▒▒▒▒▒▒▒▒▒░▓██████▌▒▒▒▒░ ▒▓▒▒
// ▓▓▓▓▓▓▓█▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▒▒▓██████▌▒▒▒▒▒ ▒▓▒▒
// ▀▀▀▀▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓██████▌▒▒▒▒▒░ ▓▒▒░
// ▀▀▀▀▓▓▓▓▓▓▓▓▓▓▓███████▓▓▓▓▓▓▒▒
// ▀▀▀▓▓▓███████▓▓▓▓▓▒
// ▀▀▀▀▓▓▓▓▒
//********************************************************************************
//* *
//* NESCAT by Nathalis *
//* prototype version: 0.5 (c)2020 *
//* Enhanced version Nintendo Emulator for ESP32 *
//* *
//* Requirements: ESP32 WEMOS D1 MINI, SD7789 LCD, MICROSD CARD slot, *
//* PCM5102 I2S AUDIO MODULE, OTHER PARTS... *
//* *
//* Only for personal & educational use! *
//* (GPL-3.0 License) *
//* *
//********************************************************************************
//* *
//* features: *
//* - MicroSD card support *
//* - 240*240 1.3" LCD SD7789 display *
//* - Composite TV OUT Video PAL *
//* - I2S AUDIO support PCM5102 module *
//* - PS2 (USB) KEYBOARD support (wireless not work) *
//* - huge NES ROMs up to 512kB (read from FLASH) *
//* - PS4 DualShock BlueTooth Gamepad (experimental) *
//* *
//* to do: *
//* - ESP32-WROVER PSRAM module support *
//* - battery install *
//* - ESP32 MP3-Player support *
//* *
//* *
//********************************************************************************
#define NES_FOLDER ("/NES/")
#define BLUETOOTH_ENABLED
#define KEYBOARD_ENABLED
#define LCD_ENABLED true
#define SOUND_ENABLED true
#define COMPOSITE_VIDEO_ENABLED
#define DEBUG true //Serial debugging enable.
#define DEBUGEXTRA false //Extra Serial debugging enable.
//================================================================================
#define PIN_UP 39 //SVN
#define PIN_DOWN 35 //IO35
#define PIN_LEFT 36 //SVP
#define PIN_RIGHT 34 //IO34
#define PIN_A 2 //IO2
#define PIN_B 14 //TMS
#define PIN_START 15 //TDO
#define PIN_SELECT 13 //TCK
///!!! do not forget 1KOHM resistors
#define KEYBOARD_DATA 4 /// ---[ 1K ]--- // -D
#define KEYBOARD_CLK 0 /// ---[ 1K ]--- // +D
//COMPOSITE_VIDEO: - //DAC_GPIO25_CHANNEL or DAC_GPIO26_CHANNEL
#define VIDEO_OUT (DAC_GPIO26_CHANNEL)
//AUDIO_i2S:
#define I2S_BCK_IO (GPIO_NUM_27) //BCK
#define I2S_WS_IO (GPIO_NUM_32) //LCK
#define I2S_DO_IO (GPIO_NUM_25) //DIN
#define I2S_DI_IO (-1)
//LCD_ST7789:
#define TFT_CS -1 // define chip select pin
#define TFT_DC 5 // define data/command pin
#define TFT_RST 19
#define TFT_MOSI 23 // Data out (SDA) //better not change
#define TFT_SCLK 18 // Clock out (SCL) //better not change
//micro_SD_Card:
#define SOFTSD_MOSI_PIN (GPIO_NUM_17)
#define SOFTSD_MISO_PIN (GPIO_NUM_16)
#define SOFTSD_SCK_PIN (GPIO_NUM_21)
#define SD_CS_PIN GPIO_NUM_22
//================================================================================
//********************************************************************************
//MAIN LIBRARIES:
#include <esp_task_wdt.h>
#include "esp_types.h"
#include "esp_heap_caps.h"
#include "esp_attr.h"
#include "esp_intr_alloc.h"
#include "esp_err.h"
#include "soc/gpio_reg.h"
#include "soc/rtc.h"
#include "soc/soc.h"
#include "soc/i2s_struct.h"
#include "soc/i2s_reg.h"
#include "soc/ledc_struct.h"
#include "soc/rtc_io_reg.h"
#include "soc/io_mux_reg.h"
#include "rom/gpio.h"
#include "rom/lldesc.h"
#include "driver/periph_ctrl.h"
#include "driver/dac.h"
#include "driver/gpio.h"
//********************************************************************************
//--------------------------------------------------------------------------------
//SPI FLASH MEMORY ACCESS:
#include "esp_spi_flash.h"
#define SPI_FLASH_ADDRESS 0x00300000 //0x00300000 working (empty flash area)
#define SPI_FLASH_SECTOR_SIZE 0x1000 //4kB = better not change
uint32_t FILE_ROM_SIZE = 0;
uint32_t FLASH_ROM_SIZE = 0;
//constant data pointer for direct access
const void *ROM;
spi_flash_mmap_handle_t handle1;
uint8_t flashdata[4096] = {0}; //4kB buffer
//--------------------------------------------------------------------------------
//DRAM MEMORY ACCESS:
//--------------------------------------------------------------------------------
char* ROMFILENAME; //NES load File name
unsigned char *rom = 0; //Actual ROM pointer
//********************************************************************************
//Allocated MEMORY variables:
uint8_t* SCREENMEMORY[256]; //256*256 bytes
uint16_t SCREENBUFFER[256]; //512 bytes
//********************************************************************************
//********************************************************************************
//PALETTES:
const uint32_t nes_32bit[64] = { //4colors Green-Yellow-Red-Blue
0x2D253469, 0x000000D9, 0x000000A1, 0x0F111CA1, 0x001F3F70, 0x0024491C, 0x06264900, 0x061F3B00,
0x12162300, 0x2D0B0000, 0x27090000, 0x21080000, 0x1806004D, 0x14141414, 0x14141414, 0x14141414,
0x453950A1, 0x2D0B00D9, 0x210800D9, 0x181C2DD9, 0x002F5EAF, 0x0031624D, 0x153B6C00, 0x2139620E,
0x2D304900, 0x45110000, 0x3F0F0000, 0x3F0F0038, 0x330C0077, 0x14141414, 0x14141414, 0x14141414,
0x5D4D6CD9, 0x451D18D9, 0x33232DD9, 0x2D2C42D9, 0x2D416CD9, 0x213E6C85, 0x2D416C4D, 0x3C456C38,
0x45476C00, 0x5D3F5015, 0x51272646, 0x5D2A2685, 0x571500BD, 0x2D253469, 0x14141414, 0x14141414,
0x5D4D6CD9, 0x543846D9, 0x453950D9, 0x45405ED9, 0x45476CD9, 0x3C456CA8, 0x4E48699A, 0x544B6C93,
0x514A6C69, 0x5D465E69, 0x5D3F50A1, 0x5D3F50BD, 0x5D1700D9, 0x514A6CD9, 0x14141414, 0x14141414,
};
const uint16_t nes_16bit[64] = {
0x7BEF, 0x001F, 0x0017, 0x4157, 0x9010, 0xA804, 0xA880, 0x88A0,
0x5180, 0x03C0, 0x0340, 0x02C0, 0x020B, 0x0000, 0x0000, 0x0000,
0xBDF7, 0x03DF, 0x02DF, 0x6A3F, 0xD819, 0xE00B, 0xF9C0, 0xE2E2,
0xABE0, 0x05C0, 0x0540, 0x0548, 0x0451, 0x0000, 0x0000, 0x0000,
0xFFDF, 0x3DFF, 0x6C5F, 0x9BDF, 0xFBDF, 0xFAD3, 0xFBCB, 0xFD08,
0xFDC0, 0xBFC3, 0x5ECA, 0x5FD3, 0x075B, 0x7BCF, 0x0000, 0x0000,
0xFFFF, 0xA73F, 0xBDDF, 0xDDDF, 0xFDDF, 0xFD38, 0xF696, 0xFF15,
0xFECF, 0xDFCF, 0xBFD7, 0xBFDB, 0x07FF, 0xFEDF, 0x0000, 0x0000,
};
//********************************************************************************
//********************************************************************************
#ifdef BLUETOOTH_ENABLED
//Bluetooth_PS4_DualShock_support_for_ESP32:
#include "src/hid_server/hid_server.h"
#endif
//COMPOSITE_VIDEO_OUT
#ifdef COMPOSITE_VIDEO_ENABLED
#include "src/compositevideo/video.h"
#endif
//********************************************************************************
//********************************************************************************
//LIBRARIES:
//LCD_ST7789:
#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
#include <SPI.h>
//micro_SD_Card:
#include <SdFat.h>
///#define ENABLE_SOFTWARE_SPI_CLASS 1 // Must be set in SdFat/SdFatConfig.h !!!
//AUDIO_i2S:
#ifdef SOUND_ENABLED
#include "driver/i2s.h"
#endif
//********************************************************************************
//CONFIGS:
//--------------------------------------------------------------------------------
//LCD_ST7789
#define ST7789_DRIVER // Configure all registers
#define TFT_WIDTH 240
#define TFT_HEIGHT 240
#define LOAD_GLCD // Font 1. Original Adafruit 8 pixel font needs ~1820 bytes in FLASH
#define LOAD_FONT2 // Font 2. Small 16 pixel high font, needs ~3534 bytes in FLASH, 96 characters
#define LOAD_FONT4 // Font 4. Medium 26 pixel high font, needs ~5848 bytes in FLASH, 96 characters
Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);
//micro_SD_Card
const uint8_t SOFT_MOSI_PIN = SOFTSD_MOSI_PIN;
const uint8_t SOFT_MISO_PIN = SOFTSD_MISO_PIN;
const uint8_t SOFT_SCK_PIN = SOFTSD_SCK_PIN;
SdFatSoftSpi<SOFT_MISO_PIN, SOFT_MOSI_PIN, SOFT_SCK_PIN> SD;
File fp;
SdFile dirFile; //for root directory file listing
SdFile file;
//********************************************************************************
//********************************************************************************
//********************************************************************************
//--------------------------------------------------------------------------------
///TYPEDEFS:
// Define this if running on little-endian (x86) systems
#define HOST_LITTLE_ENDIAN //!!! important for Arduino
#define ZERO_LENGTH 0
// quell stupid compiler warnings
#define UNUSED(x) ((x) = (x))
// 16Bit Color set
#define BLACK 0x0000
#define RED 0xF800
#define GREEN 0x07E0
#define BLUE 0x102E
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define WHITE 0xFFFF
//--------------------------------------------------------------------------------
//================================================================================
//AUDIO_SETUP
#define DEFAULT_SAMPLERATE 24000
#define DEFAULT_FRAGSIZE 60 //max.256, default 240
//VIDEO_SETUP
// Visible (NTSC) screen height
#ifndef NES_VISIBLE_HEIGHT
#define NES_VISIBLE_HEIGHT 240
#endif // !NES_VISIBLE_HEIGHT
#define NES_SCREEN_WIDTH 256
#define NES_SCREEN_HEIGHT 240
#define PAL
// NTSC = 60Hz, PAL = 50Hz
#ifdef PAL
#define NES_REFRESH_RATE 50
#else
#define NES_REFRESH_RATE 60
#endif
#define MAX_MEM_HANDLERS 32
#define DEFAULT_WIDTH NES_SCREEN_WIDTH
#define DEFAULT_HEIGHT NES_VISIBLE_HEIGHT
#define NES_CLOCK_DIVIDER 12 //default: 12
//#define NES_MASTER_CLOCK 21477272.727272727272
#define NES_MASTER_CLOCK (236250000 / 11)
#define NES_SCANLINE_CYCLES (1364.0 / NES_CLOCK_DIVIDER)
#define NES_FIQ_PERIOD (NES_MASTER_CLOCK / NES_CLOCK_DIVIDER / 60)
#define NES_RAMSIZE 0x800
#define NES6502_NUMBANKS 16
#define NES6502_BANKSHIFT 12
#define NES6502_BANKSIZE (0x10000 / NES6502_NUMBANKS)
#define NES6502_BANKMASK (NES6502_BANKSIZE - 1)
//********************************************************************************
//********************************************************************************
uint8_t NES_POWER = 1;
//********************************************************************************
QueueHandle_t vidQueue;
//********************************************************************************
//********************************************************************************
uint8_t JOY_UP = 0;
uint8_t JOY_DOWN = 0;
uint8_t JOY_LEFT = 0;
uint8_t JOY_RIGHT = 0;
uint8_t JOY_CROSS = 0;
uint8_t JOY_SQUARE = 0;
uint8_t JOY_CIRCLE = 0;
uint8_t JOY_TRIANGLE = 0;
uint8_t JOY_SHARE = 0; //(START)
uint8_t JOY_OPTIONS = 0; //(SELECT)
//********************************************************************************
//********************************************************************************
uint8_t scancode = 0;
boolean keyup = false;
byte keymap[256];
IRAM_ATTR void USB_KEYBOARD() {
#ifdef KEYBOARD_ENABLED
if (keymap[0x75] == 0) {
JOY_UP = 1;
}
else JOY_UP = 0;
if (keymap[0x72] == 0) {
JOY_DOWN = 1;
}
else JOY_DOWN = 0;
if (keymap[0x6B] == 0) {
JOY_LEFT = 1;
}
else JOY_LEFT = 0;
if (keymap[0x74] == 0) {
JOY_RIGHT = 1;
}
else JOY_RIGHT = 0;
if (keymap[0x11] == 0 || keymap[0x1A] == 0) JOY_CROSS = 1; //ALT or X
else JOY_CROSS = 0;
if (keymap[0x14] == 0 || keymap[0x22] == 0) JOY_SQUARE = 1; //CTRL or Z
else JOY_SQUARE = 0;
if (keymap[0x5A] == 0) JOY_SHARE = 1;
else JOY_SHARE = 0;
if (keymap[0x66] == 0) JOY_OPTIONS = 1;
else JOY_OPTIONS = 0;
if (keymap[0x76] == 0) {
JOY_SHARE = 1;
JOY_OPTIONS = 1;
} else if (JOY_SHARE == 1 && JOY_OPTIONS == 1 ) {
JOY_SHARE = 0;
JOY_OPTIONS = 0;
}
if (DEBUGEXTRA) {
if (JOY_UP) Serial.print("UP.");
if (JOY_DOWN) Serial.print("DOWN.");
if (JOY_LEFT) Serial.print("LEFT.");
if (JOY_RIGHT) Serial.print("RIGHT.");
if (JOY_SHARE) Serial.print("START.");
if (JOY_OPTIONS) Serial.print("SELECT.");
if (JOY_CROSS) Serial.print("A.");
if (JOY_SQUARE) Serial.print("B.");
Serial.println();
}
#endif
}
//********************************************************************************
void IRAM_ATTR kb_interruptHandler(void) {
#ifdef KEYBOARD_ENABLED
static uint8_t bitcount = 0;
uint8_t val;
int clock = digitalRead(KEYBOARD_CLK);
if (clock == 0) {
return;
}
val = digitalRead(KEYBOARD_DATA);
if (DEBUGEXTRA) Serial.print(".");
if (DEBUGEXTRA) Serial.print(val);
bitcount++;
if (bitcount > 1 && bitcount < 10) { //8bits
scancode |= ((val & 1) << (bitcount - 2));
}
if (bitcount > 10) {
if (keyup == true) {
keymap[scancode] = 1;
if (DEBUGEXTRA) {
Serial.print(" {");
Serial.print(scancode, HEX);
Serial.print("} ");
}
keyup = false;
} else {
keymap[scancode] = 0;
}
if (scancode == 0xF0 ) {
keyup = true;
} else {
keyup = false;
}
if (DEBUGEXTRA) {
Serial.print("[");
Serial.print(scancode, HEX);
Serial.println("]");
}
USB_KEYBOARD();
bitcount = 0;
scancode = 0;
}
#endif
}
void kb_begin() {
#ifdef KEYBOARD_ENABLED
pinMode(KEYBOARD_DATA, INPUT_PULLUP);
pinMode(KEYBOARD_CLK, INPUT_PULLUP);
digitalWrite(KEYBOARD_DATA, true);
digitalWrite(KEYBOARD_CLK, true);
attachInterrupt(digitalPinToInterrupt(KEYBOARD_CLK), kb_interruptHandler, RISING);
memset(keymap, 1, sizeof(keymap));
#endif
}
//********************************************************************************
//********************************************************************************
uint8_t buf[64] = {0}; //JoyRead buffer...
int num_get = 0;
IRAM_ATTR static void PS4_JOY() {
#ifdef BLUETOOTH_ENABLED
// update the bluetooth edr/hid stack
///hid_update();
//read data from JoyStick
num_get = hid_get(buf, sizeof(buf) - 1); // called from emulation loop
//********************************************************************************
if ((num_get != -1) && buf[0] == 161) { // If connected then read JoyStick
uint8_t JOYBUTTON = buf[6];
uint8_t JOYBUTTON2 = buf[7];
///Serial.println(JOYBUTTON);
if ( JOYBUTTON % 8 == 0) {
JOY_UP = 1;
}
else if ( JOYBUTTON % 8 == 1) {
JOY_UP = 1;
JOY_RIGHT = 1;
JOY_DOWN = 0;
JOY_LEFT = 0;
}
else if ( JOYBUTTON % 8 == 2) {
JOY_RIGHT = 1;
JOY_DOWN = 0;
JOY_LEFT = 0;
JOY_UP = 0;
}
else if ( JOYBUTTON % 8 == 3) {
JOY_RIGHT = 1;
JOY_DOWN = 1;
JOY_LEFT = 0;
JOY_UP = 0;
}
else if ( JOYBUTTON % 8 == 4) {
JOY_DOWN = 1;
JOY_LEFT = 0;
JOY_RIGHT = 0;
JOY_UP = 0;
}
else if ( JOYBUTTON % 8 == 5) {
JOY_DOWN = 1;
JOY_LEFT = 1;
JOY_RIGHT = 0;
JOY_UP = 0;
}
else if ( JOYBUTTON % 8 == 6) {
JOY_LEFT = 1;
JOY_UP = 0;
JOY_DOWN = 0;
JOY_RIGHT = 0;
}
else if ( JOYBUTTON % 8 == 7) {
JOY_LEFT = 1;
JOY_UP = 1;
JOY_DOWN = 0;
JOY_RIGHT = 0;
}
if (((JOYBUTTON >> 3) & 1) != 0) {
JOY_UP = 0;
JOY_DOWN = 0;
JOY_LEFT = 0;
JOY_RIGHT = 0;
}
if ( JOYBUTTON > 8 && ((JOYBUTTON >> 4) & 1) != 0) {
JOY_SQUARE = 1;
}
else if (((JOYBUTTON >> 4) & 1) == 0) {
JOY_SQUARE = 0;
}
if ( JOYBUTTON > 8 && ((JOYBUTTON >> 4) & 2) != 0) {
JOY_CROSS = 1;
}
else if (((JOYBUTTON >> 4) & 2) == 0) {
JOY_CROSS = 0;
}
if ( JOYBUTTON > 8 && ((JOYBUTTON >> 4) & 4) != 0) {
JOY_CIRCLE = 1;
}
else if (((JOYBUTTON >> 4) & 4) == 0) {
JOY_CIRCLE = 0;
}
if ( JOYBUTTON > 8 && ((JOYBUTTON >> 4) & 8) != 0) {
JOY_TRIANGLE = 1;
}
else if (((JOYBUTTON >> 8) & 1) == 0) {
JOY_TRIANGLE = 0;
}
if (JOYBUTTON2 == 0) {
JOY_SHARE = 0;
JOY_OPTIONS = 0;
}
if ( JOYBUTTON2 > 8 && ((JOYBUTTON2 >> 4) & 1) != 0) {
JOY_SHARE = 1;
}
if ( JOYBUTTON2 > 8 && ((JOYBUTTON2 >> 4) & 2) != 0) {
JOY_OPTIONS = 1;
}
}
if (DEBUGEXTRA) {
if (JOY_UP) Serial.print("UP.");
if (JOY_DOWN) Serial.print("DOWN.");
if (JOY_LEFT) Serial.print("LEFT.");
if (JOY_RIGHT) Serial.print("RIGHT.");
if (JOY_SHARE) Serial.print("START.");
if (JOY_OPTIONS) Serial.print("SELECT.");
if (JOY_CROSS) Serial.print("A.");
if (JOY_SQUARE) Serial.print("B.");
Serial.println();
}
#endif
}
//********************************************************************************
/* read counters */
int pad0_readcount, pad1_readcount, ppad_readcount, ark_readcount;
void input_strobe(void) {
pad0_readcount = 0;
pad1_readcount = 0;
ppad_readcount = 0;
ark_readcount = 0;
}
uint8_t get_pad0(void) {
uint8_t value;
/// value = (uint8_t) retrieve_type(INP_JOYPAD0);
value = 0;
// 12, 33, 9, 10pin not usable
if (digitalRead(PIN_A) == 1) value |= 1; //A
if (digitalRead(PIN_B) == 1) value |= 2; //B
if (digitalRead(PIN_SELECT) == 1) value |= 4; //SELECT
if (digitalRead(PIN_START) == 1) value |= 8; //START
if (digitalRead(PIN_UP) == 1) value |= 16; //UP
if (digitalRead(PIN_DOWN) == 1) value |= 32; //DOWN
if (digitalRead(PIN_LEFT) == 1) value |= 64; //LEFT
if (digitalRead(PIN_RIGHT) == 1) value |= 128; //RIGHT
if (digitalRead(PIN_SELECT) == 1 && digitalRead(PIN_START) == 1) NES_POWER = 0; //EXIT
//EJECT EMULATOR
if (JOY_SHARE == 1 && JOY_OPTIONS == 1) {
JOY_SHARE = 0;
JOY_OPTIONS = 0;
NES_POWER = 0;
}
if (JOY_SHARE == 1) value |= 8; //START
if (JOY_OPTIONS == 1) value |= 4; //SELECT
if (JOY_UP == 1) value |= 16; //UP
if (JOY_DOWN == 1) value |= 32; //DOWN
if (JOY_LEFT == 1) value |= 64; //LEFT
if (JOY_RIGHT == 1) value |= 128; //RIGHT
if (JOY_CROSS == 1) value |= 1; //A
if (JOY_SQUARE == 1) value |= 2; //B
/// if (JOY_CIRCLE==1) Serial.println("JOY_CIRCLE");
/// if (JOY_TRIANGLE==1) Serial.println("JOY_TRIANGLE");
// mask out left/right simultaneous keypresses
if ((value & JOY_UP) && (value & JOY_DOWN)) value &= ~(JOY_UP | JOY_DOWN);
if ((value & JOY_LEFT) && (value & JOY_RIGHT)) value &= ~(JOY_LEFT | JOY_RIGHT);
// return (0x40 | value) due to bus conflicts
///return (0x40 | ((value >> pad0_readcount++) & 1));
return (((value >> pad0_readcount++) & 1));
}
//********************************************************************************
//********************************************************************************
//BUFFER TEXT DRAW FUNCTIONS
#include "Retro8x16.c" //used font...
void screenmemory_fillscreen(uint8_t COLOR) {
for (uint16_t Ypos = 0; Ypos < DEFAULT_HEIGHT; Ypos++)
for (uint16_t Xpos = 0; Xpos < DEFAULT_WIDTH; Xpos++) {
SCREENMEMORY[Ypos][Xpos] = COLOR;
}
if (LCD_ENABLED) xQueueSend(vidQueue, &SCREENMEMORY, 0); //refresh LCD
}
void screenmemory_drawpixel(uint16_t X, uint16_t Y, uint8_t COLOR) {
if (Y < DEFAULT_HEIGHT && X < DEFAULT_WIDTH) SCREENMEMORY[Y][X] = COLOR;
}
void screenmemory_drawfillrectangle(uint16_t X, uint16_t Y, uint16_t Width, uint16_t Height, uint8_t COLOR) {
for (uint16_t Ypos = Y; Ypos < Y + Height; Ypos++)
for (uint16_t Xpos = X; Xpos < X + Width; Xpos++) {
screenmemory_drawpixel(Xpos, Ypos, COLOR);
}
if (LCD_ENABLED) xQueueSend(vidQueue, &SCREENMEMORY, 0); //refresh LCD
}
uint8_t draw_char_xy(uint16_t Main_x, uint16_t Main_y, char Main_char, const char* font) {
uint8_t XcharSize = font[0]; //x char size
uint8_t YcharSize = font[1]; //y char size
uint8_t CHAROFFSET = font[2]; //char start offset
font[3]; //char count
if (Main_char != '\n' && Main_char != '\r') for (uint16_t Ypos = 0; Ypos < YcharSize; Ypos++)
for (uint16_t Xpos = 0; Xpos < XcharSize; Xpos += 8) {
uint8_t CHARLINE = font[(Main_char - CHAROFFSET) * (YcharSize * (XcharSize / 8)) + (Ypos) * (XcharSize / 8) + Xpos / 8 + 4];
if ((Xpos + 0 < XcharSize) && (CHARLINE & 0b10000000) != 0) screenmemory_drawpixel(Main_x + Xpos + 0, Main_y + Ypos, 48);
else screenmemory_drawpixel(Main_x + Xpos + 0, Main_y + Ypos, 63);
if ((Xpos + 1 < XcharSize) && (CHARLINE & 0b01000000) != 0) screenmemory_drawpixel(Main_x + Xpos + 1, Main_y + Ypos, 48);
else screenmemory_drawpixel(Main_x + Xpos + 1, Main_y + Ypos, 63);
if ((Xpos + 2 < XcharSize) && (CHARLINE & 0b00100000) != 0) screenmemory_drawpixel(Main_x + Xpos + 2, Main_y + Ypos, 48);
else screenmemory_drawpixel(Main_x + Xpos + 2, Main_y + Ypos, 63);
if ((Xpos + 3 < XcharSize) && (CHARLINE & 0b00010000) != 0) screenmemory_drawpixel(Main_x + Xpos + 3, Main_y + Ypos, 48);
else screenmemory_drawpixel(Main_x + Xpos + 3, Main_y + Ypos, 63);
if ((Xpos + 4 < XcharSize) && (CHARLINE & 0b00001000) != 0) screenmemory_drawpixel(Main_x + Xpos + 4, Main_y + Ypos, 48);
else screenmemory_drawpixel(Main_x + Xpos + 4, Main_y + Ypos, 63);
if ((Xpos + 5 < XcharSize) && (CHARLINE & 0b00000100) != 0) screenmemory_drawpixel(Main_x + Xpos + 5, Main_y + Ypos, 48);
else screenmemory_drawpixel(Main_x + Xpos + 5, Main_y + Ypos, 63);
if ((Xpos + 6 < XcharSize) && (CHARLINE & 0b00000010) != 0) screenmemory_drawpixel(Main_x + Xpos + 6, Main_y + Ypos, 48);
else screenmemory_drawpixel(Main_x + Xpos + 6, Main_y + Ypos, 63);
if ((Xpos + 7 < XcharSize) && (CHARLINE & 0b00000001) != 0) screenmemory_drawpixel(Main_x + Xpos + 7, Main_y + Ypos, 48);
else screenmemory_drawpixel(Main_x + Xpos + 7, Main_y + Ypos, 63);
}
return XcharSize;
}
//*******************************************************************************//
uint16_t draw_string_xy(uint16_t x, uint16_t y, char *c, const char* font)
{
uint8_t width;
uint8_t XcharSize = font[0]; //x char size
uint8_t YcharSize = font[1]; //y char size
uint16_t textwidth = 0;
while (*c) {
width = draw_char_xy(x, y, *c, font);
textwidth += (width);
x += (width);
c++;
}
if (LCD_ENABLED) xQueueSend(vidQueue, &SCREENMEMORY, 0);
return textwidth;
}
//*******************************************************************************
const char* DisplayFontSet = NULL;
uint16_t XPOS_CHAR = 0;
uint16_t YPOS_CHAR = 0;
void set_font(const char* font) {
DisplayFontSet = font;
}
void set_font_XY(uint16_t x, uint16_t y) {
XPOS_CHAR = x;
YPOS_CHAR = y;
}
void draw_string(char *c) {
if (c[strlen(c) - 1] == '\n') {
draw_string_xy(XPOS_CHAR, YPOS_CHAR, c, DisplayFontSet);
YPOS_CHAR += (uint8_t)(DisplayFontSet[1]);
XPOS_CHAR = 0;
} else {
XPOS_CHAR += draw_string_xy(XPOS_CHAR, YPOS_CHAR, c, DisplayFontSet);
}
}
//================================================================================
void (*audio_callback)(void *buffer, int length) = NULL;
//********************************************************************************
//********************************************************************************
//********************************************************************************
TimerHandle_t timer_1;
//Seemingly, this will be called only once. Should call func with a freq of frequency,
IRAM_ATTR int osd_installtimer_1(int frequency, void *func, int funcsize, void *counter, int countersize)
{
if (DEBUG) Serial.print("Timer install, freq=");
if (DEBUG) Serial.println(frequency);
delay(1000);
timer_1 = xTimerCreate("nes_hid", configTICK_RATE_HZ / frequency, pdTRUE, NULL, (TimerCallbackFunction_t)func);
xTimerStart(timer_1, 0);
return 0;
}
//********************************************************************************
//--------------------------------------------------------------------------------
// HID timer ISR
volatile int time_ticks = 0;
IRAM_ATTR static void timer_isr(void)
{
/*#ifdef BLUETOOTH_ENABLED
/// hid_update();
///PS4_JOY();
#endif*/ //this causes crashing
if (audio_callback && NES_POWER == 1) do_audio_frame();
time_ticks++;
}
IRAM_ATTR static void timer_isr_end(void) {}
IRAM_ATTR int install_timer(int hertz) {
return osd_installtimer_1(hertz, (void *) timer_isr, (int) timer_isr_end - (int) timer_isr, (void *) &time_ticks, sizeof(time_ticks));
}
//--------------------------------------------------------------------------------
IRAM_ATTR void MEMORY_STATUS() {
if (DEBUG) {
Serial.println();
Serial.println("--------------------------------");
Serial.print("TOTAL HEAP: ");
Serial.println(ESP.getHeapSize());
Serial.print("FREE HEAP: ");
Serial.println(ESP.getFreeHeap());
Serial.print("heap_caps_get_free_size: ");
Serial.println(heap_caps_get_free_size(MALLOC_CAP_8BIT));
Serial.println("--------------------------------");
}
}
//********************************************************************************
//................................................................................
//AUDIO SETUP
typedef struct sndinfo_s
{
int sample_rate;
int bps;
} sndinfo_t;
#ifdef SOUND_ENABLED
intr_handle_t i2s_interrupt;
i2s_pin_config_t pin_config = {
.bck_io_num = I2S_BCK_IO,
.ws_io_num = I2S_WS_IO,
.data_out_num = I2S_DO_IO,
.data_in_num = I2S_DI_IO //Not used
};
i2s_config_t audio_cfg = {
.mode = static_cast<i2s_mode_t>(I2S_MODE_MASTER | I2S_MODE_TX /*| I2S_MODE_DAC_BUILT_IN*/),
.sample_rate = DEFAULT_SAMPLERATE,
.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT,
///.channel_format = I2S_CHANNEL_FMT_ONLY_RIGHT,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = static_cast<i2s_comm_format_t>(I2S_COMM_FORMAT_PCM | I2S_COMM_FORMAT_I2S_MSB),
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1 /*| ESP_INTR_FLAG_IRAM /* | ESP_INTR_FLAG_SHARED*/, ///(DO NOT USE: ESP_INTR_FLAG_IRAM = BLUETOOTH PROBLEM)
.dma_buf_count = 6,
// .dma_buf_len = 2 * DEFAULT_FRAGSIZE,
.dma_buf_len = 4 * DEFAULT_FRAGSIZE,
.use_apll = false
};
#endif
int init_sound(void)
{
#ifdef SOUND_ENABLED
i2s_driver_install(I2S_NUM_1, &audio_cfg, 0, NULL);
i2s_set_pin(I2S_NUM_1, &pin_config);
#endif
audio_callback = NULL;
return 0;
}
void osd_setsound(void (*playfunc)(void *buffer, int length))
{
//Indicates we should call playfunc() to get more data.
audio_callback = playfunc;
}
void osd_stopsound(void)
{
audio_callback = NULL;
}
void osd_getsoundinfo(sndinfo_t *info);
void osd_getsoundinfo(sndinfo_t *info)
{
info->sample_rate = DEFAULT_SAMPLERATE;
info->bps = 16;
}
//--------------------------------------------------------------------------------
//--------------------------------------------------------------------------------
#if SOUND_ENABLED
QueueHandle_t queue;
// uint16_t audio_frame[DEFAULT_FRAGSIZE];
uint16_t audio_frame[2 * DEFAULT_FRAGSIZE];
#endif
void do_audio_frame()
{
///printf("do_audio_frame\n");
#if SOUND_ENABLED
int left = DEFAULT_SAMPLERATE / NES_REFRESH_RATE;
while (left)
{
int n = DEFAULT_FRAGSIZE;
if (n > left)
n = left;
audio_callback(audio_frame, n); //get more data
//16 bit mono -> 32-bit (16 bit r+l)
for (int i = n - 1; i >= 0; i--)
{
// audio_frame[i] = audio_frame[i] + 0x8000;
/// uint16_t a = (audio_frame[i] >> 3); //VEEERY BAD!
uint16_t a = (audio_frame[i] >> 0);
audio_frame[i * 2 + 1] = 0x8000 + a;
audio_frame[i * 2] = 0x8000 - a;
///Serial.print(audio_frame[i]);
}
size_t i2s_bytes_write;
// i2s_write(I2S_NUM_0, (const char *)audio_frame, 2 * n, &i2s_bytes_write, portMAX_DELAY);
// left -= i2s_bytes_write / 2;
i2s_write(I2S_NUM_1, (const char *)audio_frame, 4 * n, &i2s_bytes_write, portMAX_DELAY);
left -= i2s_bytes_write / 4;
}
#endif
}
//--------------------------------------------------------------------------------
//================================================================================
static void lcd_write_frame(const uint16_t x, const uint16_t y, const uint16_t width, const uint16_t height)
{
uint8_t n, l;
uint16_t i, len;
uint16_t w = TFT_WIDTH;
uint16_t h = TFT_HEIGHT;
uint16_t X_ = 0;
for (i = 0; i < height; i++) {
uint16_t horizontal_offset = 8;
for (X_ = 0; X_ < 256; X_++) {
SCREENBUFFER[X_] = nes_16bit[(0x3F & ((uint8_t *)SCREENMEMORY[i])[X_])];
}
///PAL optimalisation in this case:
tft.drawRGBBitmap(0, i, (uint16_t *)(SCREENBUFFER), 48, 1);
tft.drawRGBBitmap(48, i, (uint16_t *)(SCREENBUFFER + 48), 48, 1);
tft.drawRGBBitmap(96, i, (uint16_t *)(SCREENBUFFER + 96), 48, 1);
tft.drawRGBBitmap(144, i, (uint16_t *)(SCREENBUFFER + 144), 48, 1);
tft.drawRGBBitmap(192, i, (uint16_t *)(SCREENBUFFER + 192), 48, 1);
}
}
//================================================================================
//--------------------------------------------------------------------------------
///QueueHandle_t vidQueue;
static void videoTask(void *arg)
{
int x = (320 - DEFAULT_WIDTH) / 2;
int y = ((240 - DEFAULT_HEIGHT) / 2);
while (1)
{
xQueueReceive(vidQueue, &SCREENMEMORY, portMAX_DELAY);
lcd_write_frame(x, y, DEFAULT_WIDTH, DEFAULT_HEIGHT);
///delay(1); //1ms (prevent crash???)
}
}
//--------------------------------------------------------------------------------
int audiovideo_init() ///osd_init()
{
// disable Core 0 WDT
TaskHandle_t idle_0 = xTaskGetIdleTaskHandleForCPU(0);
esp_task_wdt_delete(idle_0);
init_sound(); //START AUDIO
vidQueue = xQueueCreate( 1, sizeof( unsigned int* ));
///lcd_write_frame(0, 0, 320, 240);
xTaskCreatePinnedToCore(&videoTask, "videoTask", 3072, NULL, 0, NULL, 0);
if (DEBUG) Serial.println("videoTask Pinned To Core 0...");
return 0;
}
//--------------------------------------------------------------------------------
//--------------------------------------------------------------------------------
#define MAXFILES 256
#define MAXFILENAME_LENGTH 255
void sortStrings(char arr[][MAXFILENAME_LENGTH], int n)
{
char temp[MAXFILENAME_LENGTH];
// Sorting strings using bubble sort
for (int j = 0; j < n - 1; j++)
{
for (int i = j + 1; i < n; i++)
{
if (strcmp(arr[j], arr[i]) > 0)
{
strcpy(temp, arr[j]);
strcpy(arr[j], arr[i]);
strcpy(arr[i], temp);
}
}
}
}
//================================================================================
// Max of ten files since files are selected with a single digit.
const uint16_t nMaxfiles = MAXFILES; //max. 256 NES roms
char filename[nMaxfiles][MAXFILENAME_LENGTH] = {0};
char fileext[nMaxfiles][4] = {0};
char* NESMENU() {
uint8_t num = 0;
uint8_t loadedFileNames = 0;
screenmemory_fillscreen(63); //black color
set_font_XY(0, 10);
//--------------------------------------------------------------------------------
//LOAD FILENAMES INTO MEMORY...
num = 0;
//Load List files in root directory.
///if (!dirFile.open("/", O_READ)) {
if (!dirFile.open(NES_FOLDER, O_READ)) {
SD.errorHalt("open root failed");
while (1) {};
}
while (num < nMaxfiles && file.openNext(&dirFile, O_READ)) {
// Skip directories and hidden files.
if (!file.isSubDir() && !file.isHidden()) {
for (uint8_t i = sizeof(filename[num]); i > 3; i--) filename[num][i] = 0;
file.getName(filename[num], MAXFILENAME_LENGTH);
for (uint8_t i = sizeof(filename[num]); i > 3; i--) {
if (filename[num][i] != 0) {
fileext[num][3] = '\0';
fileext[num][2] = filename[num][i];
fileext[num][1] = filename[num][i - 1];
fileext[num][0] = filename[num][i - 2];