Make SD-card work
This commit is contained in:
Tobias Gunkel
+73
-116
@@ -15,29 +15,32 @@
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#include "gb.h"
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/* C Headers */
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// C Headers
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/* RP2040 Headers */
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// RP2040 Headers
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#include <hardware/vreg.h>
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/* Project headers */
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// Project headers
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#include "hedley.h"
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#include "minigb_apu.h"
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// #include "sdcard.h"
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#include "common.h"
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#include "game_bin.h"
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#include "i2s-audio.h"
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#define GBCOLOR_HEADER_ONLY
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#include "gbcolors.h"
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#include "input.h"
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#if ENABLE_SDCARD
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#include "card_loader.h"
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#include "SdFat.h"
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#ifdef ENABLE_USB_STORAGE_DEVICE
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#include "msc.h"
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#endif
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#endif
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#if ENABLE_SOUND
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#include "i2s-audio.h"
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#include "minigb_apu.h"
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/**
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* Global variables for audio task
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* stream contains N=AUDIO_SAMPLES samples
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@@ -46,86 +49,24 @@
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* This is intended to be played at AUDIO_SAMPLE_RATE Hz
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*/
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uint16_t* stream;
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i2s_config_t i2s_config;
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#endif
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/** Definition of ROM data
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* We're going to erase and reprogram a region 1Mb from the start of the flash
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* Once done, we can access this at XIP_BASE + 1Mb.
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* Game Boy DMG ROM size ranges from 32768 bytes (e.g. Tetris) to 1,048,576 bytes (e.g. Pokemod Red)
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*/
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// #define FLASH_TARGET_OFFSET (1024 * 1024)
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// const uint8_t *rom = (const uint8_t *)(XIP_BASE + FLASH_TARGET_OFFSET);
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const uint8_t* rom = GAME_DATA;
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static unsigned char rom_bank0[65536];
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static uint8_t ram[32768];
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static uint8_t manual_palette_selected = 0;
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struct gb_s gb;
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palette_t palette; // Colour palette
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i2s_config_t i2s_config;
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uint_fast32_t frames = 0;
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#define putstdio(x) write(1, x, strlen(x))
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/**
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* Returns a byte from the ROM file at the given address.
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*/
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uint8_t gb_rom_read(struct gb_s* gb, const uint_fast32_t addr) {
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(void)gb;
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if (addr < sizeof(rom_bank0))
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return rom_bank0[addr];
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return rom[addr];
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}
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/**
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* Returns a byte from the cartridge RAM at the given address.
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*/
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uint8_t gb_cart_ram_read(struct gb_s* gb, const uint_fast32_t addr) {
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(void)gb;
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return ram[addr];
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}
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/**
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* Writes a given byte to the cartridge RAM at the given address.
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*/
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void gb_cart_ram_write(struct gb_s* gb, const uint_fast32_t addr,
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const uint8_t val) {
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ram[addr] = val;
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}
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/**
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* Ignore all errors.
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*/
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void gb_error(struct gb_s* gb, const enum gb_error_e gb_err, const uint16_t addr) {
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#if 1
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const char* gb_err_str[4] = {
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"UNKNOWN",
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"INVALID OPCODE",
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"INVALID READ",
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"INVALID WRITE"};
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Serial.printf("Error %d occurred: %s at %04X\n.\n", gb_err, gb_err_str[gb_err], addr);
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// abort();
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#endif
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}
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void startEmulator() {
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#if ENABLE_LCD
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#if ENABLE_SDCARD
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/* ROM File selector */
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lcd_init();
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tft.fillScreen(TFT_BLACK);
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Serial.println("Starting ROM file selector ...");
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rom_file_selector();
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#endif
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#endif
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/* Initialise GB context. */
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memcpy(rom_bank0, rom, sizeof(rom_bank0));
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auto ret = gb_init(&gb, &gb_rom_read, &gb_cart_ram_read,
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&gb_cart_ram_write, &gb_error, NULL);
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Serial.println("GB ");
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Serial.println("Init GB context ...");
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auto ret = initGbContext();
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if (ret != GB_INIT_NO_ERROR) {
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Serial.printf("Error: %d\n", ret);
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reset();
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@@ -139,32 +80,36 @@ void startEmulator() {
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gb_init_lcd(&gb, &lcd_draw_line);
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/* Start Core1, which processes requests to the LCD. */
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Serial.println("CORE1 ");
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Serial.println("Starting Core1 ...");
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multicore_launch_core1(core1_init);
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Serial.println("LCD ");
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#endif
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#if ENABLE_SOUND
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// Initialize audio emulation
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Serial.println("Starting audio ...");
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audio_init();
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Serial.println("AUDIO ");
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#endif
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#if ENABLE_SDCARD
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/* Load Save File. */
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read_cart_ram_file(&gb);
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//Serial.println("Load save file ...");
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//read_cart_ram_file(&gb);
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#endif
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Serial.print("\n> ");
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}
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void reset() {
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void reset(uint32_t sleepMs) {
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Serial.println("\nEmulation Ended");
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sleep_ms(sleepMs);
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/* stop lcd task running on core 1 */
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multicore_reset_core1();
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watchdog_reboot(0,0,0);
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watchdog_reboot(0, 0, 0);
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}
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void halt() {
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while (true) {}
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}
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void overclock() {
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@@ -177,33 +122,10 @@ void overclock() {
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sleep_ms(2);
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}
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void setup() {
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overclock();
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/* Initialise USB serial connection for debugging. */
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Serial.begin(115200);
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//while (!Serial) ;
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//delay(2000);
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#if ENABLE_SDCARD
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time_init();
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#endif
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// sleep_ms(5000);
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Serial.println("INIT: ");
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/* Initialise joypad. */
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initJoypad();
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/* Set SPI clock to use high frequency. */
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#if 0
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clock_configure(clk_peri, 0,
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CLOCKS_CLK_PERI_CTRL_AUXSRC_VALUE_CLK_SYS,
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125 * 1000 * 1000, 125 * 1000 * 1000);
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spi_init(spi0, 30*1000*1000);
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spi_set_format(spi0, 16, SPI_CPOL_0, SPI_CPHA_0, SPI_MSB_FIRST);
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#endif
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void initSound() {
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#if ENABLE_SOUND
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Serial.println("Initialize Sound ...");
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// Allocate memory for the stream buffer
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stream = (uint16_t*) malloc(AUDIO_BUFFER_SIZE_BYTES);
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assert(stream != NULL);
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@@ -213,11 +135,37 @@ void setup() {
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i2s_config = i2s_get_default_config();
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i2s_config.sample_freq = AUDIO_SAMPLE_RATE;
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i2s_config.dma_trans_count = AUDIO_SAMPLES;
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i2s_config.data_pin = 26, // DIN
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i2s_config.clock_pin_base = 27, // BCLK + LRC
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i2s_config.data_pin = I2S_DIN_PIN,
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i2s_config.clock_pin_base = I2S_BCLK_LRC_PIN_BASE,
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i2s_volume(&i2s_config, 2);
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i2s_init(&i2s_config);
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Serial.println("Sound initialized");
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#endif
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}
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void setup() {
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#if ENABLE_LCD
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lcd_init(false);
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#endif
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overclock();
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// Initialise USB serial connection for debugging.
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Serial.begin(115200);
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//while (!Serial) ;
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//delay(2000);
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#if ENABLE_SDCARD
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init_sdcard();
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#if ENABLE_USB_STORAGE_DEVICE
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initUsbStorageDevice();
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#endif
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#endif
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initJoypad();
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initSound();
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startEmulator();
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}
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@@ -248,6 +196,15 @@ void loop() {
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}
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#endif
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handlePad();
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handleJoypad();
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handleSerial();
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}
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void error(String message) {
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tft.fillScreen(TFT_BLACK);
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tft.setTextColor(TFT_RED);
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tft.drawString(message, 0, ERROR_TEXT_OFFSET, FONT_ID);
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Serial.printf("E %s\n", message.c_str());
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Serial.flush();
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reset(5000);
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}
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